diff --git a/apps/node-vless/src/main.ts b/apps/node-vless/src/main.ts
index 78f4544..0fe001c 100644
--- a/apps/node-vless/src/main.ts
+++ b/apps/node-vless/src/main.ts
@@ -21,6 +21,7 @@ import {
   WritableStream,
 } from 'node:stream/web';
 const port = process.env.PORT;
+const smallRAM = process.env.SMALLRAM || false;
 const userID = process.env.UUID || '';
 //'ipv4first' or 'verbatim'
 const dnOder = process.env.DNSORDER || 'verbatim';
@@ -196,7 +197,7 @@ vlessWServer.on('connection', async function connection(ws, request) {
       responseStream = Readable.toWeb(remoteConnection, {
         strategy: {
           // due to nodejs issue https://github.com/nodejs/node/issues/46347
-          highWaterMark: 1000, // 1000 * tcp mtu(64kb) = 64mb
+          highWaterMark: smallRAM ? 100 : 1000, // 1000 * tcp mtu(64kb) = 64mb
         },
       });
     }
@@ -279,7 +280,8 @@ server.on('upgrade', function upgrade(request, socket, head) {
 server.listen(
   {
     port: port,
-    host: '0.0.0.0',
+    host: '::',
+    // host: '0.0.0.0',
   },
   () => {
     console.log(`server listen in http://127.0.0.1:${port}`);
diff --git a/dist/apps/node-vless/main.js b/dist/apps/node-vless/main.js
index fbea470..7eeadea 100644
--- a/dist/apps/node-vless/main.js
+++ b/dist/apps/node-vless/main.js
@@ -5169,11 +5169,7 @@ function initAsClient(websocket, address, protocols, options) {
     });
   });
 
-  if (opts.finishRequest) {
-    opts.finishRequest(req, websocket);
-  } else {
-    req.end();
-  }
+  req.end();
 }
 
 /**
@@ -5497,65 +5493,65 @@ function socketOnError() {
 /***/ ((__unused_webpack_module, exports, __webpack_require__) => {
 
 "use strict";
-
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.serverIndexPage = exports.index401 = exports.serverStaticFile = void 0;
-const node_fs_1 = __webpack_require__("node:fs");
-const node_path_1 = __webpack_require__("node:path");
-const pretty_cache_header_1 = __webpack_require__("../../node_modules/pretty-cache-header/dist/index.cjs");
-const mimeLookup = {
-    '.js': 'application/javascript,charset=UTF-8',
-    '.html': 'text/html,charset=UTF-8',
-    '.css': 'text/css; charset=UTF-8',
-};
-const staticPath = 'dist/apps/cf-page/';
-const file401 = 'dist/apps/node-vless/assets/401.html';
-let filepath = null;
-function serverStaticFile(req, resp) {
-    const url = new URL(req.url, `http://${req.headers['host']}`);
-    let fileurl = url.pathname;
-    fileurl = (0, node_path_1.join)(staticPath, fileurl);
-    console.log('....', fileurl);
-    filepath = (0, node_path_1.resolve)(fileurl);
-    console.log(filepath);
-    if ((0, node_fs_1.existsSync)(filepath)) {
-        let fileExt = (0, node_path_1.extname)(filepath);
-        console.log('fileExt', fileExt);
-        let mimeType = mimeLookup[fileExt];
-        resp.writeHead(200, {
-            'Content-Type': mimeType,
-            'Cache-Control': (0, pretty_cache_header_1.cacheHeader)({
-                public: true,
-                maxAge: '1year',
-                staleWhileRevalidate: '1year',
-            }),
-        });
-        return (0, node_fs_1.createReadStream)(filepath).pipe(resp);
-    }
-    else {
-        resp.writeHead(404);
-        resp.write('not found');
-        resp.end();
-        return resp;
-    }
-}
-exports.serverStaticFile = serverStaticFile;
-function index401(req, resp) {
-    const file401Path = (0, node_path_1.resolve)(file401);
-    if ((0, node_fs_1.existsSync)(file401Path)) {
-        (0, node_fs_1.createReadStream)(file401Path).pipe(resp);
-    }
-    else {
-        resp.writeHead(401);
-        resp.write('UUID env not set');
-        resp.end();
-    }
-}
-exports.index401 = index401;
-function serverIndexPage(req, resp, uuid) {
-    // if()
-}
-exports.serverIndexPage = serverIndexPage;
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.serverIndexPage = exports.index401 = exports.serverStaticFile = void 0;
+const node_fs_1 = __webpack_require__("node:fs");
+const node_path_1 = __webpack_require__("node:path");
+const pretty_cache_header_1 = __webpack_require__("../../node_modules/pretty-cache-header/dist/index.cjs");
+const mimeLookup = {
+    '.js': 'application/javascript,charset=UTF-8',
+    '.html': 'text/html,charset=UTF-8',
+    '.css': 'text/css; charset=UTF-8',
+};
+const staticPath = 'dist/apps/cf-page/';
+const file401 = 'dist/apps/node-vless/assets/401.html';
+let filepath = null;
+function serverStaticFile(req, resp) {
+    const url = new URL(req.url, `http://${req.headers['host']}`);
+    let fileurl = url.pathname;
+    fileurl = (0, node_path_1.join)(staticPath, fileurl);
+    console.log('....', fileurl);
+    filepath = (0, node_path_1.resolve)(fileurl);
+    console.log(filepath);
+    if ((0, node_fs_1.existsSync)(filepath)) {
+        let fileExt = (0, node_path_1.extname)(filepath);
+        console.log('fileExt', fileExt);
+        let mimeType = mimeLookup[fileExt];
+        resp.writeHead(200, {
+            'Content-Type': mimeType,
+            'Cache-Control': (0, pretty_cache_header_1.cacheHeader)({
+                public: true,
+                maxAge: '1year',
+                staleWhileRevalidate: '1year',
+            }),
+        });
+        return (0, node_fs_1.createReadStream)(filepath).pipe(resp);
+    }
+    else {
+        resp.writeHead(404);
+        resp.write('not found');
+        resp.end();
+        return resp;
+    }
+}
+exports.serverStaticFile = serverStaticFile;
+function index401(req, resp) {
+    const file401Path = (0, node_path_1.resolve)(file401);
+    if ((0, node_fs_1.existsSync)(file401Path)) {
+        (0, node_fs_1.createReadStream)(file401Path).pipe(resp);
+    }
+    else {
+        resp.writeHead(401);
+        resp.write('UUID env not set');
+        resp.end();
+    }
+}
+exports.index401 = index401;
+function serverIndexPage(req, resp, uuid) {
+    // if()
+}
+exports.serverIndexPage = serverIndexPage;
 
 
 /***/ }),
@@ -5564,15 +5560,15 @@ exports.serverIndexPage = serverIndexPage;
 /***/ ((__unused_webpack_module, exports, __webpack_require__) => {
 
 "use strict";
-
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.vlessJs = exports.processVlessHeader = exports.closeWebSocket = exports.makeReadableWebSocketStream = exports.delay = void 0;
-var vless_js_1 = __webpack_require__("../../libs/vless-js/src/lib/vless-js.ts");
-Object.defineProperty(exports, "delay", ({ enumerable: true, get: function () { return vless_js_1.delay; } }));
-Object.defineProperty(exports, "makeReadableWebSocketStream", ({ enumerable: true, get: function () { return vless_js_1.makeReadableWebSocketStream; } }));
-Object.defineProperty(exports, "closeWebSocket", ({ enumerable: true, get: function () { return vless_js_1.safeCloseWebSocket; } }));
-Object.defineProperty(exports, "processVlessHeader", ({ enumerable: true, get: function () { return vless_js_1.processVlessHeader; } }));
-Object.defineProperty(exports, "vlessJs", ({ enumerable: true, get: function () { return vless_js_1.vlessJs; } }));
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.vlessJs = exports.processVlessHeader = exports.closeWebSocket = exports.makeReadableWebSocketStream = exports.delay = void 0;
+var vless_js_1 = __webpack_require__("../../libs/vless-js/src/lib/vless-js.ts");
+Object.defineProperty(exports, "delay", ({ enumerable: true, get: function () { return vless_js_1.delay; } }));
+Object.defineProperty(exports, "makeReadableWebSocketStream", ({ enumerable: true, get: function () { return vless_js_1.makeReadableWebSocketStream; } }));
+Object.defineProperty(exports, "closeWebSocket", ({ enumerable: true, get: function () { return vless_js_1.safeCloseWebSocket; } }));
+Object.defineProperty(exports, "processVlessHeader", ({ enumerable: true, get: function () { return vless_js_1.processVlessHeader; } }));
+Object.defineProperty(exports, "vlessJs", ({ enumerable: true, get: function () { return vless_js_1.vlessJs; } }));
 
 
 /***/ }),
@@ -5581,216 +5577,216 @@ Object.defineProperty(exports, "vlessJs", ({ enumerable: true, get: function ()
 /***/ ((__unused_webpack_module, exports, __webpack_require__) => {
 
 "use strict";
-
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.processVlessHeader = exports.safeCloseWebSocket = exports.makeReadableWebSocketStream = exports.delay = exports.vlessJs = void 0;
-const tslib_1 = __webpack_require__("../../node_modules/tslib/tslib.es6.js");
-const uuid_1 = __webpack_require__("../../node_modules/uuid/dist/esm-node/index.js");
-function vlessJs() {
-    return 'vless-js';
-}
-exports.vlessJs = vlessJs;
-function delay(ms) {
-    return new Promise((resolve, rej) => {
-        setTimeout(resolve, ms);
-    });
-}
-exports.delay = delay;
-function makeReadableWebSocketStream(ws, earlyDataHeader, log) {
-    let readableStreamCancel = false;
-    return new ReadableStream({
-        start(controller) {
-            ws.addEventListener('message', (e) => tslib_1.__awaiter(this, void 0, void 0, function* () {
-                // is stream is cancel, skip controller.enqueue
-                if (readableStreamCancel) {
-                    return;
-                }
-                const vlessBuffer = e.data;
-                // console.log('MESSAGE', vlessBuffer);
-                // console.log(`message is ${vlessBuffer.byteLength}`);
-                // this is not backpressure, but backpressure is depends on underying websocket can pasue
-                // https://streams.spec.whatwg.org/#example-rs-push-backpressure
-                controller.enqueue(vlessBuffer);
-            }));
-            ws.addEventListener('error', (e) => {
-                log('socket has error');
-                readableStreamCancel = true;
-                controller.error(e);
-            });
-            ws.addEventListener('close', () => {
-                try {
-                    log('webSocket is close');
-                    // is stream is cancel, skip controller.close
-                    if (readableStreamCancel) {
-                        return;
-                    }
-                    controller.close();
-                }
-                catch (error) {
-                    log(`websocketStream can't close DUE to `, error);
-                }
-            });
-            // header ws 0rtt
-            const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader);
-            if (error) {
-                log(`earlyDataHeader has invaild base64`);
-                safeCloseWebSocket(ws);
-                return;
-            }
-            if (earlyData) {
-                controller.enqueue(earlyData);
-            }
-        },
-        pull(controller) {
-            // if ws can stop read if stream is full, we can implement backpressure
-            // https://streams.spec.whatwg.org/#example-rs-push-backpressure
-        },
-        cancel(reason) {
-            // TODO: log can be remove, if writestream has error, write stream will has log
-            log(`websocketStream is cancel DUE to `, reason);
-            if (readableStreamCancel) {
-                return;
-            }
-            readableStreamCancel = true;
-            safeCloseWebSocket(ws);
-        },
-    });
-}
-exports.makeReadableWebSocketStream = makeReadableWebSocketStream;
-function base64ToArrayBuffer(base64Str) {
-    if (!base64Str) {
-        return { error: null };
-    }
-    try {
-        // go use modified Base64 for URL rfc4648 which js atob not support
-        base64Str = base64Str.replace(/-/g, '+').replace(/_/g, '/');
-        const decode = atob(base64Str);
-        const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0));
-        return { earlyData: arryBuffer.buffer, error: null };
-    }
-    catch (error) {
-        return { error };
-    }
-}
-function safeCloseWebSocket(socket) {
-    try {
-        if (socket.readyState === socket.OPEN) {
-            socket.close();
-        }
-    }
-    catch (error) {
-        console.error('safeCloseWebSocket error', error);
-    }
-}
-exports.safeCloseWebSocket = safeCloseWebSocket;
-//https://github.com/v2ray/v2ray-core/issues/2636
-// 1 字节	  16 字节       1 字节	       M 字节	              1 字节            2 字节      1 字节	      S 字节	      X 字节
-// 协议版本	  等价 UUID	  附加信息长度 M	(附加信息 ProtoBuf)  指令(udp/tcp)	    端口	      地址类型      地址	        请求数据
-// 00                   00                                  01                 01bb(443)   02(ip/host)
-// 1 字节	              1 字节	      N 字节	         Y 字节
-// 协议版本，与请求的一致	附加信息长度 N	附加信息 ProtoBuf	响应数据
-function processVlessHeader(vlessBuffer, userID
-// uuidLib: any,
-// lodash: any
-) {
-    if (vlessBuffer.byteLength < 24) {
-        // console.log('invalid data');
-        // controller.error('invalid data');
-        return {
-            hasError: true,
-            message: 'invalid data',
-        };
-    }
-    const version = new Uint8Array(vlessBuffer.slice(0, 1));
-    let isValidUser = false;
-    let isUDP = false;
-    if ((0, uuid_1.stringify)(new Uint8Array(vlessBuffer.slice(1, 17))) === userID) {
-        isValidUser = true;
-    }
-    if (!isValidUser) {
-        // console.log('in valid user');
-        // controller.error('in valid user');
-        return {
-            hasError: true,
-            message: 'invalid user',
-        };
-    }
-    const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0];
-    //skip opt for now
-    const command = new Uint8Array(vlessBuffer.slice(18 + optLength, 18 + optLength + 1))[0];
-    // 0x01 TCP
-    // 0x02 UDP
-    // 0x03 MUX
-    if (command === 1) {
-    }
-    else if (command === 2) {
-        isUDP = true;
-    }
-    else {
-        return {
-            hasError: true,
-            message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`,
-        };
-    }
-    const portIndex = 18 + optLength + 1;
-    const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2);
-    // port is big-Endian in raw data etc 80 == 0x005d
-    const portRemote = new DataView(portBuffer).getInt16(0);
-    let addressIndex = portIndex + 2;
-    const addressBuffer = new Uint8Array(vlessBuffer.slice(addressIndex, addressIndex + 1));
-    // 1--> ipv4  addressLength =4
-    // 2--> domain name addressLength=addressBuffer[1]
-    // 3--> ipv6  addressLength =16
-    const addressType = addressBuffer[0];
-    let addressLength = 0;
-    let addressValueIndex = addressIndex + 1;
-    let addressValue = '';
-    switch (addressType) {
-        case 1:
-            addressLength = 4;
-            addressValue = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)).join('.');
-            break;
-        case 2:
-            addressLength = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + 1))[0];
-            addressValueIndex += 1;
-            addressValue = new TextDecoder().decode(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
-            break;
-        case 3:
-            addressLength = 16;
-            const dataView = new DataView(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
-            // 2001:0db8:85a3:0000:0000:8a2e:0370:7334
-            const ipv6 = [];
-            for (let i = 0; i < 8; i++) {
-                ipv6.push(dataView.getUint16(i * 2).toString(16));
-            }
-            addressValue = ipv6.join(':');
-            // console.log('---------', addressValue)
-            // seems no need add [] for ipv6
-            // if (addressValue) {
-            //   addressValue = `[${addressValue}]`;
-            // }
-            break;
-        default:
-            console.log(`invild  addressType is ${addressType}`);
-    }
-    if (!addressValue) {
-        // console.log(`[${address}:${port}] addressValue is empty`);
-        // controller.error(`[${address}:${portWithRandomLog}] addressValue is empty`);
-        return {
-            hasError: true,
-            message: `addressValue is empty, addressType is ${addressType}`,
-        };
-    }
-    return {
-        hasError: false,
-        addressRemote: addressValue,
-        portRemote,
-        rawDataIndex: addressValueIndex + addressLength,
-        vlessVersion: version,
-        isUDP,
-    };
-}
-exports.processVlessHeader = processVlessHeader;
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.processVlessHeader = exports.safeCloseWebSocket = exports.makeReadableWebSocketStream = exports.delay = exports.vlessJs = void 0;
+const tslib_1 = __webpack_require__("../../node_modules/tslib/tslib.es6.js");
+const uuid_1 = __webpack_require__("../../node_modules/uuid/dist/esm-node/index.js");
+function vlessJs() {
+    return 'vless-js';
+}
+exports.vlessJs = vlessJs;
+function delay(ms) {
+    return new Promise((resolve, rej) => {
+        setTimeout(resolve, ms);
+    });
+}
+exports.delay = delay;
+function makeReadableWebSocketStream(ws, earlyDataHeader, log) {
+    let readableStreamCancel = false;
+    return new ReadableStream({
+        start(controller) {
+            ws.addEventListener('message', (e) => tslib_1.__awaiter(this, void 0, void 0, function* () {
+                // is stream is cancel, skip controller.enqueue
+                if (readableStreamCancel) {
+                    return;
+                }
+                const vlessBuffer = e.data;
+                // console.log('MESSAGE', vlessBuffer);
+                // console.log(`message is ${vlessBuffer.byteLength}`);
+                // this is not backpressure, but backpressure is depends on underying websocket can pasue
+                // https://streams.spec.whatwg.org/#example-rs-push-backpressure
+                controller.enqueue(vlessBuffer);
+            }));
+            ws.addEventListener('error', (e) => {
+                log('socket has error');
+                readableStreamCancel = true;
+                controller.error(e);
+            });
+            ws.addEventListener('close', () => {
+                try {
+                    log('webSocket is close');
+                    // is stream is cancel, skip controller.close
+                    if (readableStreamCancel) {
+                        return;
+                    }
+                    controller.close();
+                }
+                catch (error) {
+                    log(`websocketStream can't close DUE to `, error);
+                }
+            });
+            // header ws 0rtt
+            const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader);
+            if (error) {
+                log(`earlyDataHeader has invaild base64`);
+                safeCloseWebSocket(ws);
+                return;
+            }
+            if (earlyData) {
+                controller.enqueue(earlyData);
+            }
+        },
+        pull(controller) {
+            // if ws can stop read if stream is full, we can implement backpressure
+            // https://streams.spec.whatwg.org/#example-rs-push-backpressure
+        },
+        cancel(reason) {
+            // TODO: log can be remove, if writestream has error, write stream will has log
+            log(`websocketStream is cancel DUE to `, reason);
+            if (readableStreamCancel) {
+                return;
+            }
+            readableStreamCancel = true;
+            safeCloseWebSocket(ws);
+        },
+    });
+}
+exports.makeReadableWebSocketStream = makeReadableWebSocketStream;
+function base64ToArrayBuffer(base64Str) {
+    if (!base64Str) {
+        return { error: null };
+    }
+    try {
+        // go use modified Base64 for URL rfc4648 which js atob not support
+        base64Str = base64Str.replace(/-/g, '+').replace(/_/g, '/');
+        const decode = atob(base64Str);
+        const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0));
+        return { earlyData: arryBuffer.buffer, error: null };
+    }
+    catch (error) {
+        return { error };
+    }
+}
+function safeCloseWebSocket(socket) {
+    try {
+        if (socket.readyState === socket.OPEN) {
+            socket.close();
+        }
+    }
+    catch (error) {
+        console.error('safeCloseWebSocket error', error);
+    }
+}
+exports.safeCloseWebSocket = safeCloseWebSocket;
+//https://github.com/v2ray/v2ray-core/issues/2636
+// 1 字节	  16 字节       1 字节	       M 字节	              1 字节            2 字节      1 字节	      S 字节	      X 字节
+// 协议版本	  等价 UUID	  附加信息长度 M	(附加信息 ProtoBuf)  指令(udp/tcp)	    端口	      地址类型      地址	        请求数据
+// 00                   00                                  01                 01bb(443)   02(ip/host)
+// 1 字节	              1 字节	      N 字节	         Y 字节
+// 协议版本，与请求的一致	附加信息长度 N	附加信息 ProtoBuf	响应数据
+function processVlessHeader(vlessBuffer, userID
+// uuidLib: any,
+// lodash: any
+) {
+    if (vlessBuffer.byteLength < 24) {
+        // console.log('invalid data');
+        // controller.error('invalid data');
+        return {
+            hasError: true,
+            message: 'invalid data',
+        };
+    }
+    const version = new Uint8Array(vlessBuffer.slice(0, 1));
+    let isValidUser = false;
+    let isUDP = false;
+    if ((0, uuid_1.stringify)(new Uint8Array(vlessBuffer.slice(1, 17))) === userID) {
+        isValidUser = true;
+    }
+    if (!isValidUser) {
+        // console.log('in valid user');
+        // controller.error('in valid user');
+        return {
+            hasError: true,
+            message: 'invalid user',
+        };
+    }
+    const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0];
+    //skip opt for now
+    const command = new Uint8Array(vlessBuffer.slice(18 + optLength, 18 + optLength + 1))[0];
+    // 0x01 TCP
+    // 0x02 UDP
+    // 0x03 MUX
+    if (command === 1) {
+    }
+    else if (command === 2) {
+        isUDP = true;
+    }
+    else {
+        return {
+            hasError: true,
+            message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`,
+        };
+    }
+    const portIndex = 18 + optLength + 1;
+    const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2);
+    // port is big-Endian in raw data etc 80 == 0x005d
+    const portRemote = new DataView(portBuffer).getInt16(0);
+    let addressIndex = portIndex + 2;
+    const addressBuffer = new Uint8Array(vlessBuffer.slice(addressIndex, addressIndex + 1));
+    // 1--> ipv4  addressLength =4
+    // 2--> domain name addressLength=addressBuffer[1]
+    // 3--> ipv6  addressLength =16
+    const addressType = addressBuffer[0];
+    let addressLength = 0;
+    let addressValueIndex = addressIndex + 1;
+    let addressValue = '';
+    switch (addressType) {
+        case 1:
+            addressLength = 4;
+            addressValue = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)).join('.');
+            break;
+        case 2:
+            addressLength = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + 1))[0];
+            addressValueIndex += 1;
+            addressValue = new TextDecoder().decode(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
+            break;
+        case 3:
+            addressLength = 16;
+            const dataView = new DataView(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
+            // 2001:0db8:85a3:0000:0000:8a2e:0370:7334
+            const ipv6 = [];
+            for (let i = 0; i < 8; i++) {
+                ipv6.push(dataView.getUint16(i * 2).toString(16));
+            }
+            addressValue = ipv6.join(':');
+            // console.log('---------', addressValue)
+            // seems no need add [] for ipv6
+            // if (addressValue) {
+            //   addressValue = `[${addressValue}]`;
+            // }
+            break;
+        default:
+            console.log(`invild  addressType is ${addressType}`);
+    }
+    if (!addressValue) {
+        // console.log(`[${address}:${port}] addressValue is empty`);
+        // controller.error(`[${address}:${portWithRandomLog}] addressValue is empty`);
+        return {
+            hasError: true,
+            message: `addressValue is empty, addressType is ${addressType}`,
+        };
+    }
+    return {
+        hasError: false,
+        addressRemote: addressValue,
+        portRemote,
+        rawDataIndex: addressValueIndex + addressLength,
+        vlessVersion: version,
+        isUDP,
+    };
+}
+exports.processVlessHeader = processVlessHeader;
 
 
 /***/ }),
@@ -6047,341 +6043,343 @@ var __webpack_exports__ = {};
 (() => {
 "use strict";
 var exports = __webpack_exports__;
-
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-const tslib_1 = __webpack_require__("../../node_modules/tslib/tslib.es6.js");
-const http_1 = __webpack_require__("http");
-const url_1 = __webpack_require__("url");
-const ws_1 = __webpack_require__("../../node_modules/ws/index.js");
-const utils_1 = __webpack_require__("./src/app/utils.ts");
-const uuid_1 = __webpack_require__("../../node_modules/uuid/dist/esm-node/index.js");
-const node_fs_1 = __webpack_require__("node:fs");
-const node_dns_1 = __webpack_require__("node:dns");
-const node_dgram_1 = __webpack_require__("node:dgram");
-const vless_js_1 = __webpack_require__("../../libs/vless-js/src/index.ts");
-const node_net_1 = __webpack_require__("node:net");
-const stream_1 = __webpack_require__("stream");
-const web_1 = __webpack_require__("node:stream/web");
-const port = process.env.PORT;
-const userID = process.env.UUID || '';
-//'ipv4first' or 'verbatim'
-const dnOder = process.env.DNSORDER || 'verbatim';
-if (dnOder === 'ipv4first') {
-    (0, node_dns_1.setDefaultResultOrder)(dnOder);
-}
-let isVaildUser = (0, uuid_1.validate)(userID);
-if (!isVaildUser) {
-    console.log('not set valid UUID');
-}
-const server = (0, http_1.createServer)((req, resp) => {
-    var _a;
-    if (!isVaildUser) {
-        return (0, utils_1.index401)(req, resp);
-    }
-    const url = new URL(req.url, `http://${req.headers['host']}`);
-    // health check
-    if (req.method === 'GET' && url.pathname.startsWith('/health')) {
-        resp.writeHead(200);
-        resp.write('health 200');
-        resp.end();
-        return;
-    }
-    // index page
-    if (url.pathname.includes(userID)) {
-        const index = 'dist/apps/cf-page/index.html';
-        resp.writeHead(200, {
-            'Content-Type': 'text/html,charset=UTF-8',
-        });
-        return (0, node_fs_1.createReadStream)(index).pipe(resp);
-    }
-    if (req.method === 'GET' && url.pathname.startsWith('/assets')) {
-        return (0, utils_1.serverStaticFile)(req, resp);
-    }
-    const basicAuth = req.headers.authorization || '';
-    const authStringBase64 = ((_a = basicAuth.split(' ')) === null || _a === void 0 ? void 0 : _a[1]) || '';
-    const authString = Buffer.from(authStringBase64, 'base64').toString('ascii');
-    if (authString && authString.includes(userID)) {
-        resp.writeHead(302, {
-            'content-type': 'text/html; charset=utf-8',
-            Location: `./${userID}`,
-        });
-        resp.end();
-    }
-    else {
-        resp.writeHead(401, {
-            'content-type': 'text/html; charset=utf-8',
-            'WWW-Authenticate': 'Basic',
-        });
-        resp.end();
-    }
-});
-const vlessWServer = new ws_1.WebSocketServer({ noServer: true });
-vlessWServer.on('connection', function connection(ws, request) {
-    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-        let address = '';
-        let portWithRandomLog = '';
-        try {
-            const log = (info, event) => {
-                console.log(`[${address}:${portWithRandomLog}] ${info}`, event || '');
-            };
-            let remoteConnection = null;
-            let udpClientStream = null;
-            let remoteConnectionReadyResolve;
-            const earlyDataHeader = request.headers['sec-websocket-protocol'];
-            const readableWebSocketStream = (0, vless_js_1.makeReadableWebSocketStream)(ws, earlyDataHeader, log);
-            let vlessResponseHeader = null;
-            // ws  --> remote
-            readableWebSocketStream
-                .pipeTo(new web_1.WritableStream({
-                write(chunk, controller) {
-                    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-                        if (!Buffer.isBuffer(chunk)) {
-                            chunk = Buffer.from(chunk);
-                        }
-                        if (udpClientStream) {
-                            const writer = udpClientStream.writable.getWriter();
-                            // nodejs buffer to ArrayBuffer issue
-                            // https://nodejs.org/dist/latest-v18.x/docs/api/buffer.html#bufbuffer
-                            yield writer.write(chunk.buffer.slice(chunk.byteOffset, chunk.byteOffset + chunk.length));
-                            writer.releaseLock();
-                            return;
-                        }
-                        if (remoteConnection) {
-                            yield socketAsyncWrite(remoteConnection, chunk);
-                            // remoteConnection.write(chunk);
-                            return;
-                        }
-                        const vlessBuffer = chunk.buffer.slice(chunk.byteOffset, chunk.byteOffset + chunk.length);
-                        const { hasError, message, portRemote, addressRemote, rawDataIndex, vlessVersion, isUDP, } = (0, vless_js_1.processVlessHeader)(vlessBuffer, userID);
-                        address = addressRemote || '';
-                        portWithRandomLog = `${portRemote}--${Math.random()} ${isUDP ? 'udp ' : 'tcp '} `;
-                        if (hasError) {
-                            controller.error(`[${address}:${portWithRandomLog}] ${message} `);
-                        }
-                        // const addressType = requestAddr >> 42
-                        // const addressLength = requestAddr & 0x0f;
-                        console.log(`[${address}:${portWithRandomLog}] connecting`);
-                        vlessResponseHeader = new Uint8Array([vlessVersion[0], 0]);
-                        const rawClientData = vlessBuffer.slice(rawDataIndex);
-                        if (isUDP) {
-                            udpClientStream = makeUDPSocketStream(portRemote, address);
-                            const writer = udpClientStream.writable.getWriter();
-                            writer.write(rawClientData).catch((error) => console.log);
-                            writer.releaseLock();
-                            remoteConnectionReadyResolve(udpClientStream);
-                        }
-                        else {
-                            remoteConnection = yield connect2Remote(portRemote, address, log);
-                            remoteConnection.write(new Uint8Array(rawClientData));
-                            remoteConnectionReadyResolve(remoteConnection);
-                        }
-                    });
-                },
-                close() {
-                    // if (udpClientStream ) {
-                    //   udpClientStream.writable.close();
-                    // }
-                    // (remoteConnection as Socket).end();
-                    console.log(`[${address}:${portWithRandomLog}] readableWebSocketStream is close`);
-                },
-                abort(reason) {
-                    // TODO: log can be remove, abort will catch by catch block
-                    console.log(`[${address}:${portWithRandomLog}] readableWebSocketStream is abort`, JSON.stringify(reason));
-                },
-            }))
-                .catch((error) => {
-                console.error(`[${address}:${portWithRandomLog}] readableWebSocketStream pipeto has exception`, error.stack || error);
-                // error is cancel readable stream anyway, no need close websocket in here
-                // closeWebSocket(webSocket);
-                // close remote conn
-                // remoteConnection?.close();
-            });
-            yield new Promise((resolve) => (remoteConnectionReadyResolve = resolve));
-            // remote --> ws
-            let responseStream = udpClientStream === null || udpClientStream === void 0 ? void 0 : udpClientStream.readable;
-            if (remoteConnection) {
-                // ignore type error
-                // @ts-ignore
-                responseStream = stream_1.Readable.toWeb(remoteConnection, {
-                    strategy: {
-                        // due to nodejs issue https://github.com/nodejs/node/issues/46347
-                        highWaterMark: 1000, // 1000 * tcp mtu(64kb) = 64mb
-                    },
-                });
-            }
-            let count = 0;
-            // ws.send(vlessResponseHeader!);
-            // remoteConnection.pipe(
-            //   new Writable({
-            //     async write(chunk: Uint8Array, encoding, callback) {
-            //       count += chunk.byteLength;
-            //       console.log('ws write', count / (1024 * 1024));
-            //       console.log(
-            //         '-----++++',
-            //         (remoteConnection as Socket).bytesRead / (1024 * 1024)
-            //       );
-            //       if (ws.readyState === ws.OPEN) {
-            //         await wsAsyncWrite(ws, chunk);
-            //         callback();
-            //       }
-            //     },
-            //   })
-            // );
-            // if readable not pipe can't wait fro writeable write method
-            yield responseStream.pipeTo(new web_1.WritableStream({
-                start() {
-                    if (ws.readyState === ws.OPEN) {
-                        ws.send(vlessResponseHeader);
-                    }
-                },
-                write(chunk, controller) {
-                    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-                        // count += chunk.byteLength;
-                        // console.log('ws write', count / (1024 * 1024));
-                        // console.log(
-                        //   '-----++++',
-                        //   (remoteConnection as Socket).bytesRead / (1024 * 1024),
-                        //   (remoteConnection as Socket).readableHighWaterMark
-                        // );
-                        // we have issue there, maybe beacsue nodejs web stream has bug.
-                        // socket web stream will read more data from socket
-                        if (ws.readyState === ws.OPEN) {
-                            yield wsAsyncWrite(ws, chunk);
-                        }
-                        else {
-                            if (!remoteConnection.destroyed) {
-                                remoteConnection.destroy();
-                            }
-                        }
-                    });
-                },
-                close() {
-                    console.log(`[${address}:${portWithRandomLog}] remoteConnection!.readable is close`);
-                },
-                abort(reason) {
-                    (0, vless_js_1.closeWebSocket)(ws);
-                    console.error(`[${address}:${portWithRandomLog}] remoteConnection!.readable abort`, reason);
-                },
-            }));
-        }
-        catch (error) {
-            console.error(`[${address}:${portWithRandomLog}] processWebSocket has exception `, error.stack || error);
-            (0, vless_js_1.closeWebSocket)(ws);
-        }
-    });
-});
-server.on('upgrade', function upgrade(request, socket, head) {
-    const { pathname } = (0, url_1.parse)(request.url);
-    vlessWServer.handleUpgrade(request, socket, head, function done(ws) {
-        vlessWServer.emit('connection', ws, request);
-    });
-});
-server.listen({
-    port: port,
-    host: '0.0.0.0',
-}, () => {
-    console.log(`server listen in http://127.0.0.1:${port}`);
-});
-function connect2Remote(port, host, log) {
-    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-        return new Promise((resole, reject) => {
-            const remoteSocket = (0, node_net_1.connect)({
-                port: port,
-                host: host,
-                // https://github.com/nodejs/node/pull/46587
-                // autoSelectFamily: true,
-            }, () => {
-                log(`connected`);
-                resole(remoteSocket);
-            });
-            remoteSocket.addListener('error', () => {
-                reject('remoteSocket has error');
-            });
-        });
-    });
-}
-function socketAsyncWrite(ws, chunk) {
-    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-        return new Promise((resolve, reject) => {
-            ws.write(chunk, (error) => {
-                if (error) {
-                    reject(error);
-                }
-                else {
-                    resolve('');
-                }
-            });
-        });
-    });
-}
-function wsAsyncWrite(ws, chunk) {
-    return tslib_1.__awaiter(this, void 0, void 0, function* () {
-        return new Promise((resolve, reject) => {
-            ws.send(chunk, (error) => {
-                if (error) {
-                    reject(error);
-                }
-                else {
-                    resolve('');
-                }
-            });
-        });
-    });
-}
-function makeUDPSocketStream(portRemote, address) {
-    const udpClient = (0, node_dgram_1.createSocket)('udp4');
-    const transformStream = new web_1.TransformStream({
-        start(controller) {
-            /* … */
-            udpClient.on('message', (message, info) => {
-                controller.enqueue(Buffer.concat([new Uint8Array([0, info.size]), message]));
-            });
-            udpClient.on('error', (error) => {
-                console.log('udpClient error event', error);
-                controller.error(error);
-            });
-        },
-        transform(chunk, controller) {
-            return tslib_1.__awaiter(this, void 0, void 0, function* () {
-                //seems v2ray will use same web socket for dns query..
-                //And v2ray will combine A record and AAAA record into one ws message and use 2 btye for dns query length
-                for (let index = 0; index < chunk.byteLength;) {
-                    const lengthBuffer = chunk.slice(index, index + 2);
-                    const udpPakcetLength = new DataView(lengthBuffer).getInt16(0);
-                    const udpData = new Uint8Array(chunk.slice(index + 2, index + 2 + udpPakcetLength));
-                    index = index + 2 + udpPakcetLength;
-                    yield new Promise((resolve, reject) => {
-                        udpClient.send(udpData, portRemote, address, (err) => {
-                            if (err) {
-                                console.log('udps send error', err);
-                                controller.error(`Failed to send UDP packet !! ${err}`);
-                                safeCloseUDP(udpClient);
-                            }
-                            resolve(true);
-                        });
-                    });
-                    index = index;
-                }
-                // console.log('dns chunk', chunk);
-                // console.log(portRemote, address);
-                // port is big-Endian in raw data etc 80 == 0x005d
-            });
-        },
-        flush(controller) {
-            safeCloseUDP(udpClient);
-            controller.terminate();
-        },
-    });
-    return transformStream;
-}
-function safeCloseUDP(client) {
-    try {
-        client.close();
-    }
-    catch (error) {
-        console.log('error close udp', error);
-    }
-}
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+const tslib_1 = __webpack_require__("../../node_modules/tslib/tslib.es6.js");
+const http_1 = __webpack_require__("http");
+const url_1 = __webpack_require__("url");
+const ws_1 = __webpack_require__("../../node_modules/ws/index.js");
+const utils_1 = __webpack_require__("./src/app/utils.ts");
+const uuid_1 = __webpack_require__("../../node_modules/uuid/dist/esm-node/index.js");
+const node_fs_1 = __webpack_require__("node:fs");
+const node_dns_1 = __webpack_require__("node:dns");
+const node_dgram_1 = __webpack_require__("node:dgram");
+const vless_js_1 = __webpack_require__("../../libs/vless-js/src/index.ts");
+const node_net_1 = __webpack_require__("node:net");
+const stream_1 = __webpack_require__("stream");
+const web_1 = __webpack_require__("node:stream/web");
+const port = process.env.PORT;
+const smallRAM = process.env.SMALLRAM || false;
+const userID = process.env.UUID || '';
+//'ipv4first' or 'verbatim'
+const dnOder = process.env.DNSORDER || 'verbatim';
+if (dnOder === 'ipv4first') {
+    (0, node_dns_1.setDefaultResultOrder)(dnOder);
+}
+let isVaildUser = (0, uuid_1.validate)(userID);
+if (!isVaildUser) {
+    console.log('not set valid UUID');
+}
+const server = (0, http_1.createServer)((req, resp) => {
+    var _a;
+    if (!isVaildUser) {
+        return (0, utils_1.index401)(req, resp);
+    }
+    const url = new URL(req.url, `http://${req.headers['host']}`);
+    // health check
+    if (req.method === 'GET' && url.pathname.startsWith('/health')) {
+        resp.writeHead(200);
+        resp.write('health 200');
+        resp.end();
+        return;
+    }
+    // index page
+    if (url.pathname.includes(userID)) {
+        const index = 'dist/apps/cf-page/index.html';
+        resp.writeHead(200, {
+            'Content-Type': 'text/html,charset=UTF-8',
+        });
+        return (0, node_fs_1.createReadStream)(index).pipe(resp);
+    }
+    if (req.method === 'GET' && url.pathname.startsWith('/assets')) {
+        return (0, utils_1.serverStaticFile)(req, resp);
+    }
+    const basicAuth = req.headers.authorization || '';
+    const authStringBase64 = ((_a = basicAuth.split(' ')) === null || _a === void 0 ? void 0 : _a[1]) || '';
+    const authString = Buffer.from(authStringBase64, 'base64').toString('ascii');
+    if (authString && authString.includes(userID)) {
+        resp.writeHead(302, {
+            'content-type': 'text/html; charset=utf-8',
+            Location: `./${userID}`,
+        });
+        resp.end();
+    }
+    else {
+        resp.writeHead(401, {
+            'content-type': 'text/html; charset=utf-8',
+            'WWW-Authenticate': 'Basic',
+        });
+        resp.end();
+    }
+});
+const vlessWServer = new ws_1.WebSocketServer({ noServer: true });
+vlessWServer.on('connection', function connection(ws, request) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        let address = '';
+        let portWithRandomLog = '';
+        try {
+            const log = (info, event) => {
+                console.log(`[${address}:${portWithRandomLog}] ${info}`, event || '');
+            };
+            let remoteConnection = null;
+            let udpClientStream = null;
+            let remoteConnectionReadyResolve;
+            const earlyDataHeader = request.headers['sec-websocket-protocol'];
+            const readableWebSocketStream = (0, vless_js_1.makeReadableWebSocketStream)(ws, earlyDataHeader, log);
+            let vlessResponseHeader = null;
+            // ws  --> remote
+            readableWebSocketStream
+                .pipeTo(new web_1.WritableStream({
+                write(chunk, controller) {
+                    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+                        if (!Buffer.isBuffer(chunk)) {
+                            chunk = Buffer.from(chunk);
+                        }
+                        if (udpClientStream) {
+                            const writer = udpClientStream.writable.getWriter();
+                            // nodejs buffer to ArrayBuffer issue
+                            // https://nodejs.org/dist/latest-v18.x/docs/api/buffer.html#bufbuffer
+                            yield writer.write(chunk.buffer.slice(chunk.byteOffset, chunk.byteOffset + chunk.length));
+                            writer.releaseLock();
+                            return;
+                        }
+                        if (remoteConnection) {
+                            yield socketAsyncWrite(remoteConnection, chunk);
+                            // remoteConnection.write(chunk);
+                            return;
+                        }
+                        const vlessBuffer = chunk.buffer.slice(chunk.byteOffset, chunk.byteOffset + chunk.length);
+                        const { hasError, message, portRemote, addressRemote, rawDataIndex, vlessVersion, isUDP, } = (0, vless_js_1.processVlessHeader)(vlessBuffer, userID);
+                        address = addressRemote || '';
+                        portWithRandomLog = `${portRemote}--${Math.random()} ${isUDP ? 'udp ' : 'tcp '} `;
+                        if (hasError) {
+                            controller.error(`[${address}:${portWithRandomLog}] ${message} `);
+                        }
+                        // const addressType = requestAddr >> 42
+                        // const addressLength = requestAddr & 0x0f;
+                        console.log(`[${address}:${portWithRandomLog}] connecting`);
+                        vlessResponseHeader = new Uint8Array([vlessVersion[0], 0]);
+                        const rawClientData = vlessBuffer.slice(rawDataIndex);
+                        if (isUDP) {
+                            udpClientStream = makeUDPSocketStream(portRemote, address);
+                            const writer = udpClientStream.writable.getWriter();
+                            writer.write(rawClientData).catch((error) => console.log);
+                            writer.releaseLock();
+                            remoteConnectionReadyResolve(udpClientStream);
+                        }
+                        else {
+                            remoteConnection = yield connect2Remote(portRemote, address, log);
+                            remoteConnection.write(new Uint8Array(rawClientData));
+                            remoteConnectionReadyResolve(remoteConnection);
+                        }
+                    });
+                },
+                close() {
+                    // if (udpClientStream ) {
+                    //   udpClientStream.writable.close();
+                    // }
+                    // (remoteConnection as Socket).end();
+                    console.log(`[${address}:${portWithRandomLog}] readableWebSocketStream is close`);
+                },
+                abort(reason) {
+                    // TODO: log can be remove, abort will catch by catch block
+                    console.log(`[${address}:${portWithRandomLog}] readableWebSocketStream is abort`, JSON.stringify(reason));
+                },
+            }))
+                .catch((error) => {
+                console.error(`[${address}:${portWithRandomLog}] readableWebSocketStream pipeto has exception`, error.stack || error);
+                // error is cancel readable stream anyway, no need close websocket in here
+                // closeWebSocket(webSocket);
+                // close remote conn
+                // remoteConnection?.close();
+            });
+            yield new Promise((resolve) => (remoteConnectionReadyResolve = resolve));
+            // remote --> ws
+            let responseStream = udpClientStream === null || udpClientStream === void 0 ? void 0 : udpClientStream.readable;
+            if (remoteConnection) {
+                // ignore type error
+                // @ts-ignore
+                responseStream = stream_1.Readable.toWeb(remoteConnection, {
+                    strategy: {
+                        // due to nodejs issue https://github.com/nodejs/node/issues/46347
+                        highWaterMark: smallRAM ? 100 : 1000, // 1000 * tcp mtu(64kb) = 64mb
+                    },
+                });
+            }
+            let count = 0;
+            // ws.send(vlessResponseHeader!);
+            // remoteConnection.pipe(
+            //   new Writable({
+            //     async write(chunk: Uint8Array, encoding, callback) {
+            //       count += chunk.byteLength;
+            //       console.log('ws write', count / (1024 * 1024));
+            //       console.log(
+            //         '-----++++',
+            //         (remoteConnection as Socket).bytesRead / (1024 * 1024)
+            //       );
+            //       if (ws.readyState === ws.OPEN) {
+            //         await wsAsyncWrite(ws, chunk);
+            //         callback();
+            //       }
+            //     },
+            //   })
+            // );
+            // if readable not pipe can't wait fro writeable write method
+            yield responseStream.pipeTo(new web_1.WritableStream({
+                start() {
+                    if (ws.readyState === ws.OPEN) {
+                        ws.send(vlessResponseHeader);
+                    }
+                },
+                write(chunk, controller) {
+                    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+                        // count += chunk.byteLength;
+                        // console.log('ws write', count / (1024 * 1024));
+                        // console.log(
+                        //   '-----++++',
+                        //   (remoteConnection as Socket).bytesRead / (1024 * 1024),
+                        //   (remoteConnection as Socket).readableHighWaterMark
+                        // );
+                        // we have issue there, maybe beacsue nodejs web stream has bug.
+                        // socket web stream will read more data from socket
+                        if (ws.readyState === ws.OPEN) {
+                            yield wsAsyncWrite(ws, chunk);
+                        }
+                        else {
+                            if (!remoteConnection.destroyed) {
+                                remoteConnection.destroy();
+                            }
+                        }
+                    });
+                },
+                close() {
+                    console.log(`[${address}:${portWithRandomLog}] remoteConnection!.readable is close`);
+                },
+                abort(reason) {
+                    (0, vless_js_1.closeWebSocket)(ws);
+                    console.error(`[${address}:${portWithRandomLog}] remoteConnection!.readable abort`, reason);
+                },
+            }));
+        }
+        catch (error) {
+            console.error(`[${address}:${portWithRandomLog}] processWebSocket has exception `, error.stack || error);
+            (0, vless_js_1.closeWebSocket)(ws);
+        }
+    });
+});
+server.on('upgrade', function upgrade(request, socket, head) {
+    const { pathname } = (0, url_1.parse)(request.url);
+    vlessWServer.handleUpgrade(request, socket, head, function done(ws) {
+        vlessWServer.emit('connection', ws, request);
+    });
+});
+server.listen({
+    port: port,
+    host: '::',
+    // host: '0.0.0.0',
+}, () => {
+    console.log(`server listen in http://127.0.0.1:${port}`);
+});
+function connect2Remote(port, host, log) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        return new Promise((resole, reject) => {
+            const remoteSocket = (0, node_net_1.connect)({
+                port: port,
+                host: host,
+                // https://github.com/nodejs/node/pull/46587
+                // autoSelectFamily: true,
+            }, () => {
+                log(`connected`);
+                resole(remoteSocket);
+            });
+            remoteSocket.addListener('error', () => {
+                reject('remoteSocket has error');
+            });
+        });
+    });
+}
+function socketAsyncWrite(ws, chunk) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        return new Promise((resolve, reject) => {
+            ws.write(chunk, (error) => {
+                if (error) {
+                    reject(error);
+                }
+                else {
+                    resolve('');
+                }
+            });
+        });
+    });
+}
+function wsAsyncWrite(ws, chunk) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        return new Promise((resolve, reject) => {
+            ws.send(chunk, (error) => {
+                if (error) {
+                    reject(error);
+                }
+                else {
+                    resolve('');
+                }
+            });
+        });
+    });
+}
+function makeUDPSocketStream(portRemote, address) {
+    const udpClient = (0, node_dgram_1.createSocket)('udp4');
+    const transformStream = new web_1.TransformStream({
+        start(controller) {
+            /* … */
+            udpClient.on('message', (message, info) => {
+                controller.enqueue(Buffer.concat([new Uint8Array([0, info.size]), message]));
+            });
+            udpClient.on('error', (error) => {
+                console.log('udpClient error event', error);
+                controller.error(error);
+            });
+        },
+        transform(chunk, controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () {
+                //seems v2ray will use same web socket for dns query..
+                //And v2ray will combine A record and AAAA record into one ws message and use 2 btye for dns query length
+                for (let index = 0; index < chunk.byteLength;) {
+                    const lengthBuffer = chunk.slice(index, index + 2);
+                    const udpPakcetLength = new DataView(lengthBuffer).getInt16(0);
+                    const udpData = new Uint8Array(chunk.slice(index + 2, index + 2 + udpPakcetLength));
+                    index = index + 2 + udpPakcetLength;
+                    yield new Promise((resolve, reject) => {
+                        udpClient.send(udpData, portRemote, address, (err) => {
+                            if (err) {
+                                console.log('udps send error', err);
+                                controller.error(`Failed to send UDP packet !! ${err}`);
+                                safeCloseUDP(udpClient);
+                            }
+                            resolve(true);
+                        });
+                    });
+                    index = index;
+                }
+                // console.log('dns chunk', chunk);
+                // console.log(portRemote, address);
+                // port is big-Endian in raw data etc 80 == 0x005d
+            });
+        },
+        flush(controller) {
+            safeCloseUDP(udpClient);
+            controller.terminate();
+        },
+    });
+    return transformStream;
+}
+function safeCloseUDP(client) {
+    try {
+        client.close();
+    }
+    catch (error) {
+        console.log('error close udp', error);
+    }
+}
 
 })();
 
diff --git a/dist/apps/node-vless/main.js.map b/dist/apps/node-vless/main.js.map
index 29417d7..154f553 100644
--- a/dist/apps/node-vless/main.js.map
+++ b/dist/apps/node-vless/main.js.map
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parseTimestring (string, returnUnit, opts) {\n  opts = Object.assign({}, DEFAULT_OPTS, opts || {})\n\n  let totalSeconds = 0\n  let unitValues = getUnitValues(opts)\n  let groups = string\n    .toLowerCase()\n    .replace(/[^.\\w+-]+/g, '')\n    .match(/[-+]?[0-9.]+[a-z]+/g)\n\n  if (groups === null) {\n    throw new Error(`The string [${string}] could not be parsed by timestring`)\n  }\n\n  groups.forEach(group => {\n    let value = group.match(/[0-9.]+/g)[0]\n    let unit = group.match(/[a-z]+/g)[0]\n\n    totalSeconds += getSeconds(value, unit, unitValues)\n  })\n\n  if (returnUnit) {\n    return convert(totalSeconds, returnUnit, unitValues)\n  }\n\n  return totalSeconds\n}\n\n/**\n * Get unit values based on the passed options\n *\n * @param   {Object} opts\n * @returns {Object}\n */\n\nfunction getUnitValues (opts) {\n  let unitValues = {\n    ms: 0.001,\n    s: 1,\n    m: 60,\n    h: 3600\n  }\n\n  unitValues.d = opts.hoursPerDay * unitValues.h\n  unitValues.w = opts.daysPerWeek 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unitValues) {\n  return value / unitValues[getUnitKey(unit)]\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n    extendStatics = Object.setPrototypeOf ||\r\n        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    if (typeof b !== \"function\" && b !== null)\r\n        throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    }\r\n    return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n    function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n    var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n    var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n    var _, done = false;\r\n    for (var i = decorators.length - 1; i >= 0; i--) {\r\n        var context = {};\r\n        for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n        for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n        context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n        var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n        if (kind === \"accessor\") {\r\n            if (result === void 0) continue;\r\n            if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n            if (_ = accept(result.get)) descriptor.get = _;\r\n            if (_ = accept(result.set)) descriptor.set = _;\r\n            if (_ = accept(result.init)) initializers.push(_);\r\n        }\r\n        else if (_ = accept(result)) {\r\n            if (kind === \"field\") initializers.push(_);\r\n            else descriptor[key] = _;\r\n        }\r\n    }\r\n    if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n    done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n    var useValue = arguments.length > 2;\r\n    for (var i = 0; i < initializers.length; i++) {\r\n        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n    }\r\n    return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n    return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n    if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n    return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    var desc = Object.getOwnPropertyDescriptor(m, k);\r\n    if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n        desc = { enumerable: true, get: function() { return m[k]; } };\r\n    }\r\n    Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n    for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n        if (ar || !(i in from)) {\r\n            if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n            ar[i] = from[i];\r\n        }\r\n    }\r\n    return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n    o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n    __setModuleDefault(result, mod);\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n    return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n    if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n    return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n    if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n    return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n","import crypto from 'crypto';\nconst rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate\n\nlet poolPtr = rnds8Pool.length;\nexport default function rng() {\n  if (poolPtr > rnds8Pool.length - 16) {\n    crypto.randomFillSync(rnds8Pool);\n    poolPtr = 0;\n  }\n\n  return rnds8Pool.slice(poolPtr, poolPtr += 16);\n}","export default /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;","import REGEX from './regex.js';\n\nfunction validate(uuid) {\n  return typeof uuid === 'string' && REGEX.test(uuid);\n}\n\nexport default validate;","import validate from './validate.js';\n/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\n\nconst byteToHex = [];\n\nfor (let i = 0; i < 256; ++i) {\n  byteToHex.push((i + 0x100).toString(16).slice(1));\n}\n\nexport function unsafeStringify(arr, offset = 0) {\n  // Note: Be careful editing this code!  It's been tuned for performance\n  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434\n  return (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase();\n}\n\nfunction stringify(arr, offset = 0) {\n  const uuid = unsafeStringify(arr, offset); // Consistency check for valid UUID.  If this throws, it's likely due to one\n  // of the following:\n  // - One or more input array values don't map to a hex octet (leading to\n  // \"undefined\" in the uuid)\n  // - Invalid input values for the RFC `version` or `variant` fields\n\n  if (!validate(uuid)) {\n    throw TypeError('Stringified UUID is invalid');\n  }\n\n  return uuid;\n}\n\nexport default stringify;","import rng from './rng.js';\nimport { unsafeStringify } from './stringify.js'; // **`v1()` - Generate time-based UUID**\n//\n// Inspired by https://github.com/LiosK/UUID.js\n// and http://docs.python.org/library/uuid.html\n\nlet _nodeId;\n\nlet _clockseq; // Previous uuid creation time\n\n\nlet _lastMSecs = 0;\nlet _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details\n\nfunction v1(options, buf, offset) {\n  let i = buf && offset || 0;\n  const b = buf || new Array(16);\n  options = options || {};\n  let node = options.node || _nodeId;\n  let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not\n  // specified.  We do this lazily to minimize issues related to insufficient\n  // system entropy.  See #189\n\n  if (node == null || clockseq == null) {\n    const seedBytes = options.random || (options.rng || rng)();\n\n    if (node == null) {\n      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)\n      node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];\n    }\n\n    if (clockseq == null) {\n      // Per 4.2.2, randomize (14 bit) clockseq\n      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;\n    }\n  } // UUID timestamps are 100 nano-second units since the Gregorian epoch,\n  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so\n  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'\n  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.\n\n\n  let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock\n  // cycle to simulate higher resolution clock\n\n  let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)\n\n  const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression\n\n  if (dt < 0 && options.clockseq === undefined) {\n    clockseq = clockseq + 1 & 0x3fff;\n  } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new\n  // time interval\n\n\n  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {\n    nsecs = 0;\n  } // Per 4.2.1.2 Throw error if too many uuids are requested\n\n\n  if (nsecs >= 10000) {\n    throw new Error(\"uuid.v1(): Can't create more than 10M uuids/sec\");\n  }\n\n  _lastMSecs = msecs;\n  _lastNSecs = nsecs;\n  _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch\n\n  msecs += 12219292800000; // `time_low`\n\n  const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;\n  b[i++] = tl >>> 24 & 0xff;\n  b[i++] = tl >>> 16 & 0xff;\n  b[i++] = tl >>> 8 & 0xff;\n  b[i++] = tl & 0xff; // `time_mid`\n\n  const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;\n  b[i++] = tmh >>> 8 & 0xff;\n  b[i++] = tmh & 0xff; // `time_high_and_version`\n\n  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version\n\n  b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)\n\n  b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`\n\n  b[i++] = clockseq & 0xff; // `node`\n\n  for (let n = 0; n < 6; ++n) {\n    b[i + n] = node[n];\n  }\n\n  return buf || unsafeStringify(b);\n}\n\nexport default v1;","import validate from './validate.js';\n\nfunction parse(uuid) {\n  if (!validate(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  let v;\n  const arr = new Uint8Array(16); // Parse ########-....-....-....-............\n\n  arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;\n  arr[1] = v >>> 16 & 0xff;\n  arr[2] = v >>> 8 & 0xff;\n  arr[3] = v & 0xff; // Parse ........-####-....-....-............\n\n  arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;\n  arr[5] = v & 0xff; // Parse ........-....-####-....-............\n\n  arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;\n  arr[7] = v & 0xff; // Parse ........-....-....-####-............\n\n  arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;\n  arr[9] = v & 0xff; // Parse ........-....-....-....-############\n  // (Use \"/\" to avoid 32-bit truncation when bit-shifting high-order bytes)\n\n  arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;\n  arr[11] = v / 0x100000000 & 0xff;\n  arr[12] = v >>> 24 & 0xff;\n  arr[13] = v >>> 16 & 0xff;\n  arr[14] = v >>> 8 & 0xff;\n  arr[15] = v & 0xff;\n  return arr;\n}\n\nexport default parse;","import { unsafeStringify } from './stringify.js';\nimport parse from './parse.js';\n\nfunction stringToBytes(str) {\n  str = unescape(encodeURIComponent(str)); // UTF8 escape\n\n  const bytes = [];\n\n  for (let i = 0; i < str.length; ++i) {\n    bytes.push(str.charCodeAt(i));\n  }\n\n  return bytes;\n}\n\nexport const DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';\nexport const URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';\nexport default function v35(name, version, hashfunc) {\n  function generateUUID(value, namespace, buf, offset) {\n    var _namespace;\n\n    if (typeof value === 'string') {\n      value = stringToBytes(value);\n    }\n\n    if (typeof namespace === 'string') {\n      namespace = parse(namespace);\n    }\n\n    if (((_namespace = namespace) === null || _namespace === void 0 ? void 0 : _namespace.length) !== 16) {\n      throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');\n    } // Compute hash of namespace and value, Per 4.3\n    // Future: Use spread syntax when supported on all platforms, e.g. `bytes =\n    // hashfunc([...namespace, ... value])`\n\n\n    let bytes = new Uint8Array(16 + value.length);\n    bytes.set(namespace);\n    bytes.set(value, namespace.length);\n    bytes = hashfunc(bytes);\n    bytes[6] = bytes[6] & 0x0f | version;\n    bytes[8] = bytes[8] & 0x3f | 0x80;\n\n    if (buf) {\n      offset = offset || 0;\n\n      for (let i = 0; i < 16; ++i) {\n        buf[offset + i] = bytes[i];\n      }\n\n      return buf;\n    }\n\n    return unsafeStringify(bytes);\n  } // Function#name is not settable on some platforms (#270)\n\n\n  try {\n    generateUUID.name = name; // eslint-disable-next-line no-empty\n  } catch (err) {} // For CommonJS default export support\n\n\n  generateUUID.DNS = DNS;\n  generateUUID.URL = URL;\n  return generateUUID;\n}","import crypto from 'crypto';\n\nfunction md5(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return crypto.createHash('md5').update(bytes).digest();\n}\n\nexport default md5;","import v35 from './v35.js';\nimport md5 from './md5.js';\nconst v3 = v35('v3', 0x30, md5);\nexport default v3;","import crypto from 'crypto';\nexport default {\n  randomUUID: crypto.randomUUID\n};","import native from './native.js';\nimport rng from './rng.js';\nimport { unsafeStringify } from './stringify.js';\n\nfunction v4(options, buf, offset) {\n  if (native.randomUUID && !buf && !options) {\n    return native.randomUUID();\n  }\n\n  options = options || {};\n  const rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n\n  rnds[6] = rnds[6] & 0x0f | 0x40;\n  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided\n\n  if (buf) {\n    offset = offset || 0;\n\n    for (let i = 0; i < 16; ++i) {\n      buf[offset + i] = rnds[i];\n    }\n\n    return buf;\n  }\n\n  return unsafeStringify(rnds);\n}\n\nexport default v4;","import crypto from 'crypto';\n\nfunction sha1(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return crypto.createHash('sha1').update(bytes).digest();\n}\n\nexport default sha1;","import v35 from './v35.js';\nimport sha1 from './sha1.js';\nconst v5 = v35('v5', 0x50, sha1);\nexport default v5;","export default '00000000-0000-0000-0000-000000000000';","import validate from './validate.js';\n\nfunction version(uuid) {\n  if (!validate(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  return parseInt(uuid.slice(14, 15), 16);\n}\n\nexport default version;","export { default as v1 } from './v1.js';\nexport { default as v3 } from './v3.js';\nexport { default as v4 } from './v4.js';\nexport { default as v5 } from './v5.js';\nexport { default as NIL } from './nil.js';\nexport { default as version } from './version.js';\nexport { default as validate } from './validate.js';\nexport { default as stringify } from './stringify.js';\nexport { default as parse } from './parse.js';","'use strict';\n\nconst WebSocket = require('./lib/websocket');\n\nWebSocket.createWebSocketStream = require('./lib/stream');\nWebSocket.Server = require('./lib/websocket-server');\nWebSocket.Receiver = require('./lib/receiver');\nWebSocket.Sender = require('./lib/sender');\n\nWebSocket.WebSocket = WebSocket;\nWebSocket.WebSocketServer = WebSocket.Server;\n\nmodule.exports = WebSocket;\n","'use strict';\n\nconst { EMPTY_BUFFER } = require('./constants');\n\nconst FastBuffer = Buffer[Symbol.species];\n\n/**\n * Merges an array of buffers into a new buffer.\n *\n * @param {Buffer[]} list The array of buffers to concat\n * @param {Number} totalLength The total length of buffers in the list\n * @return {Buffer} The resulting buffer\n * @public\n */\nfunction concat(list, totalLength) {\n  if (list.length === 0) return EMPTY_BUFFER;\n  if (list.length === 1) return list[0];\n\n  const target = Buffer.allocUnsafe(totalLength);\n  let offset = 0;\n\n  for (let i = 0; i < list.length; i++) {\n    const buf = list[i];\n    target.set(buf, offset);\n    offset += buf.length;\n  }\n\n  if (offset < totalLength) {\n    return new FastBuffer(target.buffer, target.byteOffset, offset);\n  }\n\n  return target;\n}\n\n/**\n * Masks a buffer using the given mask.\n *\n * @param {Buffer} source The buffer to mask\n * @param {Buffer} mask The mask to use\n * @param {Buffer} output The buffer where to store the result\n * @param {Number} offset The offset at which to start writing\n * @param {Number} length The number of bytes to mask.\n * @public\n */\nfunction _mask(source, mask, output, offset, length) {\n  for (let i = 0; i < length; i++) {\n    output[offset + i] = source[i] ^ mask[i & 3];\n  }\n}\n\n/**\n * Unmasks a buffer using the given mask.\n *\n * @param {Buffer} buffer The buffer to unmask\n * @param {Buffer} mask The mask to use\n * @public\n */\nfunction _unmask(buffer, mask) {\n  for (let i = 0; i < buffer.length; i++) {\n    buffer[i] ^= mask[i & 3];\n  }\n}\n\n/**\n * Converts a buffer to an `ArrayBuffer`.\n *\n * @param {Buffer} buf The buffer to convert\n * @return {ArrayBuffer} Converted buffer\n * @public\n */\nfunction toArrayBuffer(buf) {\n  if (buf.length === buf.buffer.byteLength) {\n    return buf.buffer;\n  }\n\n  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.length);\n}\n\n/**\n * Converts `data` to a `Buffer`.\n *\n * @param {*} data The data to convert\n * @return {Buffer} The buffer\n * @throws {TypeError}\n * @public\n */\nfunction toBuffer(data) {\n  toBuffer.readOnly = true;\n\n  if (Buffer.isBuffer(data)) return data;\n\n  let buf;\n\n  if (data instanceof ArrayBuffer) {\n    buf = new FastBuffer(data);\n  } else if (ArrayBuffer.isView(data)) {\n    buf = new FastBuffer(data.buffer, data.byteOffset, data.byteLength);\n  } else {\n    buf = Buffer.from(data);\n    toBuffer.readOnly = false;\n  }\n\n  return buf;\n}\n\nmodule.exports = {\n  concat,\n  mask: _mask,\n  toArrayBuffer,\n  toBuffer,\n  unmask: _unmask\n};\n\n/* istanbul ignore else  */\nif (!process.env.WS_NO_BUFFER_UTIL) {\n  try {\n    const bufferUtil = require('bufferutil');\n\n    module.exports.mask = function (source, mask, output, offset, length) {\n      if (length < 48) _mask(source, mask, output, offset, length);\n      else bufferUtil.mask(source, mask, output, offset, length);\n    };\n\n    module.exports.unmask = function (buffer, mask) {\n      if (buffer.length < 32) _unmask(buffer, mask);\n      else bufferUtil.unmask(buffer, mask);\n    };\n  } catch (e) {\n    // Continue regardless of the error.\n  }\n}\n","'use strict';\n\nmodule.exports = {\n  BINARY_TYPES: ['nodebuffer', 'arraybuffer', 'fragments'],\n  EMPTY_BUFFER: Buffer.alloc(0),\n  GUID: '258EAFA5-E914-47DA-95CA-C5AB0DC85B11',\n  kForOnEventAttribute: Symbol('kIsForOnEventAttribute'),\n  kListener: Symbol('kListener'),\n  kStatusCode: Symbol('status-code'),\n  kWebSocket: Symbol('websocket'),\n  NOOP: () => {}\n};\n","'use strict';\n\nconst { kForOnEventAttribute, kListener } = require('./constants');\n\nconst kCode = Symbol('kCode');\nconst kData = Symbol('kData');\nconst kError = Symbol('kError');\nconst kMessage = Symbol('kMessage');\nconst kReason = Symbol('kReason');\nconst kTarget = Symbol('kTarget');\nconst kType = Symbol('kType');\nconst kWasClean = Symbol('kWasClean');\n\n/**\n * Class representing an event.\n */\nclass Event {\n  /**\n   * Create a new `Event`.\n   *\n   * @param {String} type The name of the event\n   * @throws {TypeError} If the `type` argument is not specified\n   */\n  constructor(type) {\n    this[kTarget] = null;\n    this[kType] = type;\n  }\n\n  /**\n   * @type {*}\n   */\n  get target() {\n    return this[kTarget];\n  }\n\n  /**\n   * @type {String}\n   */\n  get type() {\n    return this[kType];\n  }\n}\n\nObject.defineProperty(Event.prototype, 'target', { enumerable: true });\nObject.defineProperty(Event.prototype, 'type', { enumerable: true });\n\n/**\n * Class representing a close event.\n *\n * @extends Event\n */\nclass CloseEvent extends Event {\n  /**\n   * Create a new `CloseEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {Number} [options.code=0] The status code explaining why the\n   *     connection was closed\n   * @param {String} [options.reason=''] A human-readable string explaining why\n   *     the connection was closed\n   * @param {Boolean} [options.wasClean=false] Indicates whether or not the\n   *     connection was cleanly closed\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kCode] = options.code === undefined ? 0 : options.code;\n    this[kReason] = options.reason === undefined ? '' : options.reason;\n    this[kWasClean] = options.wasClean === undefined ? false : options.wasClean;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get code() {\n    return this[kCode];\n  }\n\n  /**\n   * @type {String}\n   */\n  get reason() {\n    return this[kReason];\n  }\n\n  /**\n   * @type {Boolean}\n   */\n  get wasClean() {\n    return this[kWasClean];\n  }\n}\n\nObject.defineProperty(CloseEvent.prototype, 'code', { enumerable: true });\nObject.defineProperty(CloseEvent.prototype, 'reason', { enumerable: true });\nObject.defineProperty(CloseEvent.prototype, 'wasClean', { enumerable: true });\n\n/**\n * Class representing an error event.\n *\n * @extends Event\n */\nclass ErrorEvent extends Event {\n  /**\n   * Create a new `ErrorEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {*} [options.error=null] The error that generated this event\n   * @param {String} [options.message=''] The error message\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kError] = options.error === undefined ? null : options.error;\n    this[kMessage] = options.message === undefined ? '' : options.message;\n  }\n\n  /**\n   * @type {*}\n   */\n  get error() {\n    return this[kError];\n  }\n\n  /**\n   * @type {String}\n   */\n  get message() {\n    return this[kMessage];\n  }\n}\n\nObject.defineProperty(ErrorEvent.prototype, 'error', { enumerable: true });\nObject.defineProperty(ErrorEvent.prototype, 'message', { enumerable: true });\n\n/**\n * Class representing a message event.\n *\n * @extends Event\n */\nclass MessageEvent extends Event {\n  /**\n   * Create a new `MessageEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {*} [options.data=null] The message content\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kData] = options.data === undefined ? null : options.data;\n  }\n\n  /**\n   * @type {*}\n   */\n  get data() {\n    return this[kData];\n  }\n}\n\nObject.defineProperty(MessageEvent.prototype, 'data', { enumerable: true });\n\n/**\n * This provides methods for emulating the `EventTarget` interface. It's not\n * meant to be used directly.\n *\n * @mixin\n */\nconst EventTarget = {\n  /**\n   * Register an event listener.\n   *\n   * @param {String} type A string representing the event type to listen for\n   * @param {(Function|Object)} handler The listener to add\n   * @param {Object} [options] An options object specifies characteristics about\n   *     the event listener\n   * @param {Boolean} [options.once=false] A `Boolean` indicating that the\n   *     listener should be invoked at most once after being added. If `true`,\n   *     the listener would be automatically removed when invoked.\n   * @public\n   */\n  addEventListener(type, handler, options = {}) {\n    for (const listener of this.listeners(type)) {\n      if (\n        !options[kForOnEventAttribute] &&\n        listener[kListener] === handler &&\n        !listener[kForOnEventAttribute]\n      ) {\n        return;\n      }\n    }\n\n    let wrapper;\n\n    if (type === 'message') {\n      wrapper = function onMessage(data, isBinary) {\n        const event = new MessageEvent('message', {\n          data: isBinary ? data : data.toString()\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'close') {\n      wrapper = function onClose(code, message) {\n        const event = new CloseEvent('close', {\n          code,\n          reason: message.toString(),\n          wasClean: this._closeFrameReceived && this._closeFrameSent\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'error') {\n      wrapper = function onError(error) {\n        const event = new ErrorEvent('error', {\n          error,\n          message: error.message\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'open') {\n      wrapper = function onOpen() {\n        const event = new Event('open');\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else {\n      return;\n    }\n\n    wrapper[kForOnEventAttribute] = !!options[kForOnEventAttribute];\n    wrapper[kListener] = handler;\n\n    if (options.once) {\n      this.once(type, wrapper);\n    } else {\n      this.on(type, wrapper);\n    }\n  },\n\n  /**\n   * Remove an event listener.\n   *\n   * @param {String} type A string representing the event type to remove\n   * @param {(Function|Object)} handler The listener to remove\n   * @public\n   */\n  removeEventListener(type, handler) {\n    for (const listener of this.listeners(type)) {\n      if (listener[kListener] === handler && !listener[kForOnEventAttribute]) {\n        this.removeListener(type, listener);\n        break;\n      }\n    }\n  }\n};\n\nmodule.exports = {\n  CloseEvent,\n  ErrorEvent,\n  Event,\n  EventTarget,\n  MessageEvent\n};\n\n/**\n * Call an event listener\n *\n * @param {(Function|Object)} listener The listener to call\n * @param {*} thisArg The value to use as `this`` when calling the listener\n * @param {Event} event The event to pass to the listener\n * @private\n */\nfunction callListener(listener, thisArg, event) {\n  if (typeof listener === 'object' && listener.handleEvent) {\n    listener.handleEvent.call(listener, event);\n  } else {\n    listener.call(thisArg, event);\n  }\n}\n","'use strict';\n\nconst { tokenChars } = require('./validation');\n\n/**\n * Adds an offer to the map of extension offers or a parameter to the map of\n * parameters.\n *\n * @param {Object} dest The map of extension offers or parameters\n * @param {String} name The extension or parameter name\n * @param {(Object|Boolean|String)} elem The extension parameters or the\n *     parameter value\n * @private\n */\nfunction push(dest, name, elem) {\n  if (dest[name] === undefined) dest[name] = [elem];\n  else dest[name].push(elem);\n}\n\n/**\n * Parses the `Sec-WebSocket-Extensions` header into an object.\n *\n * @param {String} header The field value of the header\n * @return {Object} The parsed object\n * @public\n */\nfunction parse(header) {\n  const offers = Object.create(null);\n  let params = Object.create(null);\n  let mustUnescape = false;\n  let isEscaping = false;\n  let inQuotes = false;\n  let extensionName;\n  let paramName;\n  let start = -1;\n  let code = -1;\n  let end = -1;\n  let i = 0;\n\n  for (; i < header.length; i++) {\n    code = header.charCodeAt(i);\n\n    if (extensionName === undefined) {\n      if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (\n        i !== 0 &&\n        (code === 0x20 /* ' ' */ || code === 0x09) /* '\\t' */\n      ) {\n        if (end === -1 && start !== -1) end = i;\n      } else if (code === 0x3b /* ';' */ || code === 0x2c /* ',' */) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        const name = header.slice(start, end);\n        if (code === 0x2c) {\n          push(offers, name, params);\n          params = Object.create(null);\n        } else {\n          extensionName = name;\n        }\n\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    } else if (paramName === undefined) {\n      if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (code === 0x20 || code === 0x09) {\n        if (end === -1 && start !== -1) end = i;\n      } else if (code === 0x3b || code === 0x2c) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        push(params, header.slice(start, end), true);\n        if (code === 0x2c) {\n          push(offers, extensionName, params);\n          params = Object.create(null);\n          extensionName = undefined;\n        }\n\n        start = end = -1;\n      } else if (code === 0x3d /* '=' */ && start !== -1 && end === -1) {\n        paramName = header.slice(start, i);\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    } else {\n      //\n      // The value of a quoted-string after unescaping must conform to the\n      // token ABNF, so only token characters are valid.\n      // Ref: https://tools.ietf.org/html/rfc6455#section-9.1\n      //\n      if (isEscaping) {\n        if (tokenChars[code] !== 1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n        if (start === -1) start = i;\n        else if (!mustUnescape) mustUnescape = true;\n        isEscaping = false;\n      } else if (inQuotes) {\n        if (tokenChars[code] === 1) {\n          if (start === -1) start = i;\n        } else if (code === 0x22 /* '\"' */ && start !== -1) {\n          inQuotes = false;\n          end = i;\n        } else if (code === 0x5c /* '\\' */) {\n          isEscaping = true;\n        } else {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n      } else if (code === 0x22 && header.charCodeAt(i - 1) === 0x3d) {\n        inQuotes = true;\n      } else if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (start !== -1 && (code === 0x20 || code === 0x09)) {\n        if (end === -1) end = i;\n      } else if (code === 0x3b || code === 0x2c) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        let value = header.slice(start, end);\n        if (mustUnescape) {\n          value = value.replace(/\\\\/g, '');\n          mustUnescape = false;\n        }\n        push(params, paramName, value);\n        if (code === 0x2c) {\n          push(offers, extensionName, params);\n          params = Object.create(null);\n          extensionName = undefined;\n        }\n\n        paramName = undefined;\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    }\n  }\n\n  if (start === -1 || inQuotes || code === 0x20 || code === 0x09) {\n    throw new SyntaxError('Unexpected end of input');\n  }\n\n  if (end === -1) end = i;\n  const token = header.slice(start, end);\n  if (extensionName === undefined) {\n    push(offers, token, params);\n  } else {\n    if (paramName === undefined) {\n      push(params, token, true);\n    } else if (mustUnescape) {\n      push(params, paramName, token.replace(/\\\\/g, ''));\n    } else {\n      push(params, paramName, token);\n    }\n    push(offers, extensionName, params);\n  }\n\n  return offers;\n}\n\n/**\n * Builds the `Sec-WebSocket-Extensions` header field value.\n *\n * @param {Object} extensions The map of extensions and parameters to format\n * @return {String} A string representing the given object\n * @public\n */\nfunction format(extensions) {\n  return Object.keys(extensions)\n    .map((extension) => {\n      let configurations = extensions[extension];\n      if (!Array.isArray(configurations)) configurations = [configurations];\n      return configurations\n        .map((params) => {\n          return [extension]\n            .concat(\n              Object.keys(params).map((k) => {\n                let values = params[k];\n                if (!Array.isArray(values)) values = [values];\n                return values\n                  .map((v) => (v === true ? k : `${k}=${v}`))\n                  .join('; ');\n              })\n            )\n            .join('; ');\n        })\n        .join(', ');\n    })\n    .join(', ');\n}\n\nmodule.exports = { format, parse };\n","'use strict';\n\nconst kDone = Symbol('kDone');\nconst kRun = Symbol('kRun');\n\n/**\n * A very simple job queue with adjustable concurrency. Adapted from\n * https://github.com/STRML/async-limiter\n */\nclass Limiter {\n  /**\n   * Creates a new `Limiter`.\n   *\n   * @param {Number} [concurrency=Infinity] The maximum number of jobs allowed\n   *     to run concurrently\n   */\n  constructor(concurrency) {\n    this[kDone] = () => {\n      this.pending--;\n      this[kRun]();\n    };\n    this.concurrency = concurrency || Infinity;\n    this.jobs = [];\n    this.pending = 0;\n  }\n\n  /**\n   * Adds a job to the queue.\n   *\n   * @param {Function} job The job to run\n   * @public\n   */\n  add(job) {\n    this.jobs.push(job);\n    this[kRun]();\n  }\n\n  /**\n   * Removes a job from the queue and runs it if possible.\n   *\n   * @private\n   */\n  [kRun]() {\n    if (this.pending === this.concurrency) return;\n\n    if (this.jobs.length) {\n      const job = this.jobs.shift();\n\n      this.pending++;\n      job(this[kDone]);\n    }\n  }\n}\n\nmodule.exports = Limiter;\n","'use strict';\n\nconst zlib = require('zlib');\n\nconst bufferUtil = require('./buffer-util');\nconst Limiter = require('./limiter');\nconst { kStatusCode } = require('./constants');\n\nconst FastBuffer = Buffer[Symbol.species];\nconst TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);\nconst kPerMessageDeflate = Symbol('permessage-deflate');\nconst kTotalLength = Symbol('total-length');\nconst kCallback = Symbol('callback');\nconst kBuffers = Symbol('buffers');\nconst kError = Symbol('error');\n\n//\n// We limit zlib concurrency, which prevents severe memory fragmentation\n// as documented in https://github.com/nodejs/node/issues/8871#issuecomment-250915913\n// and https://github.com/websockets/ws/issues/1202\n//\n// Intentionally global; it's the global thread pool that's an issue.\n//\nlet zlibLimiter;\n\n/**\n * permessage-deflate implementation.\n */\nclass PerMessageDeflate {\n  /**\n   * Creates a PerMessageDeflate instance.\n   *\n   * @param {Object} [options] Configuration options\n   * @param {(Boolean|Number)} [options.clientMaxWindowBits] Advertise support\n   *     for, or request, a custom client window size\n   * @param {Boolean} [options.clientNoContextTakeover=false] Advertise/\n   *     acknowledge disabling of client context takeover\n   * @param {Number} [options.concurrencyLimit=10] The number of concurrent\n   *     calls to zlib\n   * @param {(Boolean|Number)} [options.serverMaxWindowBits] Request/confirm the\n   *     use of a custom server window size\n   * @param {Boolean} [options.serverNoContextTakeover=false] Request/accept\n   *     disabling of server context takeover\n   * @param {Number} [options.threshold=1024] Size (in bytes) below which\n   *     messages should not be compressed if context takeover is disabled\n   * @param {Object} [options.zlibDeflateOptions] Options to pass to zlib on\n   *     deflate\n   * @param {Object} [options.zlibInflateOptions] Options to pass to zlib on\n   *     inflate\n   * @param {Boolean} [isServer=false] Create the instance in either server or\n   *     client mode\n   * @param {Number} [maxPayload=0] The maximum allowed message length\n   */\n  constructor(options, isServer, maxPayload) {\n    this._maxPayload = maxPayload | 0;\n    this._options = options || {};\n    this._threshold =\n      this._options.threshold !== undefined ? this._options.threshold : 1024;\n    this._isServer = !!isServer;\n    this._deflate = null;\n    this._inflate = null;\n\n    this.params = null;\n\n    if (!zlibLimiter) {\n      const concurrency =\n        this._options.concurrencyLimit !== undefined\n          ? this._options.concurrencyLimit\n          : 10;\n      zlibLimiter = new Limiter(concurrency);\n    }\n  }\n\n  /**\n   * @type {String}\n   */\n  static get extensionName() {\n    return 'permessage-deflate';\n  }\n\n  /**\n   * Create an extension negotiation offer.\n   *\n   * @return {Object} Extension parameters\n   * @public\n   */\n  offer() {\n    const params = {};\n\n    if (this._options.serverNoContextTakeover) {\n      params.server_no_context_takeover = true;\n    }\n    if (this._options.clientNoContextTakeover) {\n      params.client_no_context_takeover = true;\n    }\n    if (this._options.serverMaxWindowBits) {\n      params.server_max_window_bits = this._options.serverMaxWindowBits;\n    }\n    if (this._options.clientMaxWindowBits) {\n      params.client_max_window_bits = this._options.clientMaxWindowBits;\n    } else if (this._options.clientMaxWindowBits == null) {\n      params.client_max_window_bits = true;\n    }\n\n    return params;\n  }\n\n  /**\n   * Accept an extension negotiation offer/response.\n   *\n   * @param {Array} configurations The extension negotiation offers/reponse\n   * @return {Object} Accepted configuration\n   * @public\n   */\n  accept(configurations) {\n    configurations = this.normalizeParams(configurations);\n\n    this.params = this._isServer\n      ? this.acceptAsServer(configurations)\n      : this.acceptAsClient(configurations);\n\n    return this.params;\n  }\n\n  /**\n   * Releases all resources used by the extension.\n   *\n   * @public\n   */\n  cleanup() {\n    if (this._inflate) {\n      this._inflate.close();\n      this._inflate = null;\n    }\n\n    if (this._deflate) {\n      const callback = this._deflate[kCallback];\n\n      this._deflate.close();\n      this._deflate = null;\n\n      if (callback) {\n        callback(\n          new Error(\n            'The deflate stream was closed while data was being processed'\n          )\n        );\n      }\n    }\n  }\n\n  /**\n   *  Accept an extension negotiation offer.\n   *\n   * @param {Array} offers The extension negotiation offers\n   * @return {Object} Accepted configuration\n   * @private\n   */\n  acceptAsServer(offers) {\n    const opts = this._options;\n    const accepted = offers.find((params) => {\n      if (\n        (opts.serverNoContextTakeover === false &&\n          params.server_no_context_takeover) ||\n        (params.server_max_window_bits &&\n          (opts.serverMaxWindowBits === false ||\n            (typeof opts.serverMaxWindowBits === 'number' &&\n              opts.serverMaxWindowBits > params.server_max_window_bits))) ||\n        (typeof opts.clientMaxWindowBits === 'number' &&\n          !params.client_max_window_bits)\n      ) {\n        return false;\n      }\n\n      return true;\n    });\n\n    if (!accepted) {\n      throw new Error('None of the extension offers can be accepted');\n    }\n\n    if (opts.serverNoContextTakeover) {\n      accepted.server_no_context_takeover = true;\n    }\n    if (opts.clientNoContextTakeover) {\n      accepted.client_no_context_takeover = true;\n    }\n    if (typeof opts.serverMaxWindowBits === 'number') {\n      accepted.server_max_window_bits = opts.serverMaxWindowBits;\n    }\n    if (typeof opts.clientMaxWindowBits === 'number') {\n      accepted.client_max_window_bits = opts.clientMaxWindowBits;\n    } else if (\n      accepted.client_max_window_bits === true ||\n      opts.clientMaxWindowBits === false\n    ) {\n      delete accepted.client_max_window_bits;\n    }\n\n    return accepted;\n  }\n\n  /**\n   * Accept the extension negotiation response.\n   *\n   * @param {Array} response The extension negotiation response\n   * @return {Object} Accepted configuration\n   * @private\n   */\n  acceptAsClient(response) {\n    const params = response[0];\n\n    if (\n      this._options.clientNoContextTakeover === false &&\n      params.client_no_context_takeover\n    ) {\n      throw new Error('Unexpected parameter \"client_no_context_takeover\"');\n    }\n\n    if (!params.client_max_window_bits) {\n      if (typeof this._options.clientMaxWindowBits === 'number') {\n        params.client_max_window_bits = this._options.clientMaxWindowBits;\n      }\n    } else if (\n      this._options.clientMaxWindowBits === false ||\n      (typeof this._options.clientMaxWindowBits === 'number' &&\n        params.client_max_window_bits > this._options.clientMaxWindowBits)\n    ) {\n      throw new Error(\n        'Unexpected or invalid parameter \"client_max_window_bits\"'\n      );\n    }\n\n    return params;\n  }\n\n  /**\n   * Normalize parameters.\n   *\n   * @param {Array} configurations The extension negotiation offers/reponse\n   * @return {Array} The offers/response with normalized parameters\n   * @private\n   */\n  normalizeParams(configurations) {\n    configurations.forEach((params) => {\n      Object.keys(params).forEach((key) => {\n        let value = params[key];\n\n        if (value.length > 1) {\n          throw new Error(`Parameter \"${key}\" must have only a single value`);\n        }\n\n        value = value[0];\n\n        if (key === 'client_max_window_bits') {\n          if (value !== true) {\n            const num = +value;\n            if (!Number.isInteger(num) || num < 8 || num > 15) {\n              throw new TypeError(\n                `Invalid value for parameter \"${key}\": ${value}`\n              );\n            }\n            value = num;\n          } else if (!this._isServer) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n        } else if (key === 'server_max_window_bits') {\n          const num = +value;\n          if (!Number.isInteger(num) || num < 8 || num > 15) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n          value = num;\n        } else if (\n          key === 'client_no_context_takeover' ||\n          key === 'server_no_context_takeover'\n        ) {\n          if (value !== true) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n        } else {\n          throw new Error(`Unknown parameter \"${key}\"`);\n        }\n\n        params[key] = value;\n      });\n    });\n\n    return configurations;\n  }\n\n  /**\n   * Decompress data. Concurrency limited.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @public\n   */\n  decompress(data, fin, callback) {\n    zlibLimiter.add((done) => {\n      this._decompress(data, fin, (err, result) => {\n        done();\n        callback(err, result);\n      });\n    });\n  }\n\n  /**\n   * Compress data. Concurrency limited.\n   *\n   * @param {(Buffer|String)} data Data to compress\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @public\n   */\n  compress(data, fin, callback) {\n    zlibLimiter.add((done) => {\n      this._compress(data, fin, (err, result) => {\n        done();\n        callback(err, result);\n      });\n    });\n  }\n\n  /**\n   * Decompress data.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @private\n   */\n  _decompress(data, fin, callback) {\n    const endpoint = this._isServer ? 'client' : 'server';\n\n    if (!this._inflate) {\n      const key = `${endpoint}_max_window_bits`;\n      const windowBits =\n        typeof this.params[key] !== 'number'\n          ? zlib.Z_DEFAULT_WINDOWBITS\n          : this.params[key];\n\n      this._inflate = zlib.createInflateRaw({\n        ...this._options.zlibInflateOptions,\n        windowBits\n      });\n      this._inflate[kPerMessageDeflate] = this;\n      this._inflate[kTotalLength] = 0;\n      this._inflate[kBuffers] = [];\n      this._inflate.on('error', inflateOnError);\n      this._inflate.on('data', inflateOnData);\n    }\n\n    this._inflate[kCallback] = callback;\n\n    this._inflate.write(data);\n    if (fin) this._inflate.write(TRAILER);\n\n    this._inflate.flush(() => {\n      const err = this._inflate[kError];\n\n      if (err) {\n        this._inflate.close();\n        this._inflate = null;\n        callback(err);\n        return;\n      }\n\n      const data = bufferUtil.concat(\n        this._inflate[kBuffers],\n        this._inflate[kTotalLength]\n      );\n\n      if (this._inflate._readableState.endEmitted) {\n        this._inflate.close();\n        this._inflate = null;\n      } else {\n        this._inflate[kTotalLength] = 0;\n        this._inflate[kBuffers] = [];\n\n        if (fin && this.params[`${endpoint}_no_context_takeover`]) {\n          this._inflate.reset();\n        }\n      }\n\n      callback(null, data);\n    });\n  }\n\n  /**\n   * Compress data.\n   *\n   * @param {(Buffer|String)} data Data to compress\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @private\n   */\n  _compress(data, fin, callback) {\n    const endpoint = this._isServer ? 'server' : 'client';\n\n    if (!this._deflate) {\n      const key = `${endpoint}_max_window_bits`;\n      const windowBits =\n        typeof this.params[key] !== 'number'\n          ? zlib.Z_DEFAULT_WINDOWBITS\n          : this.params[key];\n\n      this._deflate = zlib.createDeflateRaw({\n        ...this._options.zlibDeflateOptions,\n        windowBits\n      });\n\n      this._deflate[kTotalLength] = 0;\n      this._deflate[kBuffers] = [];\n\n      this._deflate.on('data', deflateOnData);\n    }\n\n    this._deflate[kCallback] = callback;\n\n    this._deflate.write(data);\n    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {\n      if (!this._deflate) {\n        //\n        // The deflate stream was closed while data was being processed.\n        //\n        return;\n      }\n\n      let data = bufferUtil.concat(\n        this._deflate[kBuffers],\n        this._deflate[kTotalLength]\n      );\n\n      if (fin) {\n        data = new FastBuffer(data.buffer, data.byteOffset, data.length - 4);\n      }\n\n      //\n      // Ensure that the callback will not be called again in\n      // `PerMessageDeflate#cleanup()`.\n      //\n      this._deflate[kCallback] = null;\n\n      this._deflate[kTotalLength] = 0;\n      this._deflate[kBuffers] = [];\n\n      if (fin && this.params[`${endpoint}_no_context_takeover`]) {\n        this._deflate.reset();\n      }\n\n      callback(null, data);\n    });\n  }\n}\n\nmodule.exports = PerMessageDeflate;\n\n/**\n * The listener of the `zlib.DeflateRaw` stream `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction deflateOnData(chunk) {\n  this[kBuffers].push(chunk);\n  this[kTotalLength] += chunk.length;\n}\n\n/**\n * The listener of the `zlib.InflateRaw` stream `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction inflateOnData(chunk) {\n  this[kTotalLength] += chunk.length;\n\n  if (\n    this[kPerMessageDeflate]._maxPayload < 1 ||\n    this[kTotalLength] <= this[kPerMessageDeflate]._maxPayload\n  ) {\n    this[kBuffers].push(chunk);\n    return;\n  }\n\n  this[kError] = new RangeError('Max payload size exceeded');\n  this[kError].code = 'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH';\n  this[kError][kStatusCode] = 1009;\n  this.removeListener('data', inflateOnData);\n  this.reset();\n}\n\n/**\n * The listener of the `zlib.InflateRaw` stream `'error'` event.\n *\n * @param {Error} err The emitted error\n * @private\n */\nfunction inflateOnError(err) {\n  //\n  // There is no need to call `Zlib#close()` as the handle is automatically\n  // closed when an error is emitted.\n  //\n  this[kPerMessageDeflate]._inflate = null;\n  err[kStatusCode] = 1007;\n  this[kCallback](err);\n}\n","'use strict';\n\nconst { Writable } = require('stream');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst {\n  BINARY_TYPES,\n  EMPTY_BUFFER,\n  kStatusCode,\n  kWebSocket\n} = require('./constants');\nconst { concat, toArrayBuffer, unmask } = require('./buffer-util');\nconst { isValidStatusCode, isValidUTF8 } = require('./validation');\n\nconst FastBuffer = Buffer[Symbol.species];\nconst GET_INFO = 0;\nconst GET_PAYLOAD_LENGTH_16 = 1;\nconst GET_PAYLOAD_LENGTH_64 = 2;\nconst GET_MASK = 3;\nconst GET_DATA = 4;\nconst INFLATING = 5;\n\n/**\n * HyBi Receiver implementation.\n *\n * @extends Writable\n */\nclass Receiver extends Writable {\n  /**\n   * Creates a Receiver instance.\n   *\n   * @param {Object} [options] Options object\n   * @param {String} [options.binaryType=nodebuffer] The type for binary data\n   * @param {Object} [options.extensions] An object containing the negotiated\n   *     extensions\n   * @param {Boolean} [options.isServer=false] Specifies whether to operate in\n   *     client or server mode\n   * @param {Number} [options.maxPayload=0] The maximum allowed message length\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   */\n  constructor(options = {}) {\n    super();\n\n    this._binaryType = options.binaryType || BINARY_TYPES[0];\n    this._extensions = options.extensions || {};\n    this._isServer = !!options.isServer;\n    this._maxPayload = options.maxPayload | 0;\n    this._skipUTF8Validation = !!options.skipUTF8Validation;\n    this[kWebSocket] = undefined;\n\n    this._bufferedBytes = 0;\n    this._buffers = [];\n\n    this._compressed = false;\n    this._payloadLength = 0;\n    this._mask = undefined;\n    this._fragmented = 0;\n    this._masked = false;\n    this._fin = false;\n    this._opcode = 0;\n\n    this._totalPayloadLength = 0;\n    this._messageLength = 0;\n    this._fragments = [];\n\n    this._state = GET_INFO;\n    this._loop = false;\n  }\n\n  /**\n   * Implements `Writable.prototype._write()`.\n   *\n   * @param {Buffer} chunk The chunk of data to write\n   * @param {String} encoding The character encoding of `chunk`\n   * @param {Function} cb Callback\n   * @private\n   */\n  _write(chunk, encoding, cb) {\n    if (this._opcode === 0x08 && this._state == GET_INFO) return cb();\n\n    this._bufferedBytes += chunk.length;\n    this._buffers.push(chunk);\n    this.startLoop(cb);\n  }\n\n  /**\n   * Consumes `n` bytes from the buffered data.\n   *\n   * @param {Number} n The number of bytes to consume\n   * @return {Buffer} The consumed bytes\n   * @private\n   */\n  consume(n) {\n    this._bufferedBytes -= n;\n\n    if (n === this._buffers[0].length) return this._buffers.shift();\n\n    if (n < this._buffers[0].length) {\n      const buf = this._buffers[0];\n      this._buffers[0] = new FastBuffer(\n        buf.buffer,\n        buf.byteOffset + n,\n        buf.length - n\n      );\n\n      return new FastBuffer(buf.buffer, buf.byteOffset, n);\n    }\n\n    const dst = Buffer.allocUnsafe(n);\n\n    do {\n      const buf = this._buffers[0];\n      const offset = dst.length - n;\n\n      if (n >= buf.length) {\n        dst.set(this._buffers.shift(), offset);\n      } else {\n        dst.set(new Uint8Array(buf.buffer, buf.byteOffset, n), offset);\n        this._buffers[0] = new FastBuffer(\n          buf.buffer,\n          buf.byteOffset + n,\n          buf.length - n\n        );\n      }\n\n      n -= buf.length;\n    } while (n > 0);\n\n    return dst;\n  }\n\n  /**\n   * Starts the parsing loop.\n   *\n   * @param {Function} cb Callback\n   * @private\n   */\n  startLoop(cb) {\n    let err;\n    this._loop = true;\n\n    do {\n      switch (this._state) {\n        case GET_INFO:\n          err = this.getInfo();\n          break;\n        case GET_PAYLOAD_LENGTH_16:\n          err = this.getPayloadLength16();\n          break;\n        case GET_PAYLOAD_LENGTH_64:\n          err = this.getPayloadLength64();\n          break;\n        case GET_MASK:\n          this.getMask();\n          break;\n        case GET_DATA:\n          err = this.getData(cb);\n          break;\n        default:\n          // `INFLATING`\n          this._loop = false;\n          return;\n      }\n    } while (this._loop);\n\n    cb(err);\n  }\n\n  /**\n   * Reads the first two bytes of a frame.\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getInfo() {\n    if (this._bufferedBytes < 2) {\n      this._loop = false;\n      return;\n    }\n\n    const buf = this.consume(2);\n\n    if ((buf[0] & 0x30) !== 0x00) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'RSV2 and RSV3 must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_RSV_2_3'\n      );\n    }\n\n    const compressed = (buf[0] & 0x40) === 0x40;\n\n    if (compressed && !this._extensions[PerMessageDeflate.extensionName]) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'RSV1 must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_RSV_1'\n      );\n    }\n\n    this._fin = (buf[0] & 0x80) === 0x80;\n    this._opcode = buf[0] & 0x0f;\n    this._payloadLength = buf[1] & 0x7f;\n\n    if (this._opcode === 0x00) {\n      if (compressed) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'RSV1 must be clear',\n          true,\n          1002,\n          'WS_ERR_UNEXPECTED_RSV_1'\n        );\n      }\n\n      if (!this._fragmented) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'invalid opcode 0',\n          true,\n          1002,\n          'WS_ERR_INVALID_OPCODE'\n        );\n      }\n\n      this._opcode = this._fragmented;\n    } else if (this._opcode === 0x01 || this._opcode === 0x02) {\n      if (this._fragmented) {\n        this._loop = false;\n        return error(\n          RangeError,\n          `invalid opcode ${this._opcode}`,\n          true,\n          1002,\n          'WS_ERR_INVALID_OPCODE'\n        );\n      }\n\n      this._compressed = compressed;\n    } else if (this._opcode > 0x07 && this._opcode < 0x0b) {\n      if (!this._fin) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'FIN must be set',\n          true,\n          1002,\n          'WS_ERR_EXPECTED_FIN'\n        );\n      }\n\n      if (compressed) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'RSV1 must be clear',\n          true,\n          1002,\n          'WS_ERR_UNEXPECTED_RSV_1'\n        );\n      }\n\n      if (\n        this._payloadLength > 0x7d ||\n        (this._opcode === 0x08 && this._payloadLength === 1)\n      ) {\n        this._loop = false;\n        return error(\n          RangeError,\n          `invalid payload length ${this._payloadLength}`,\n          true,\n          1002,\n          'WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH'\n        );\n      }\n    } else {\n      this._loop = false;\n      return error(\n        RangeError,\n        `invalid opcode ${this._opcode}`,\n        true,\n        1002,\n        'WS_ERR_INVALID_OPCODE'\n      );\n    }\n\n    if (!this._fin && !this._fragmented) this._fragmented = this._opcode;\n    this._masked = (buf[1] & 0x80) === 0x80;\n\n    if (this._isServer) {\n      if (!this._masked) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'MASK must be set',\n          true,\n          1002,\n          'WS_ERR_EXPECTED_MASK'\n        );\n      }\n    } else if (this._masked) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'MASK must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_MASK'\n      );\n    }\n\n    if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;\n    else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;\n    else return this.haveLength();\n  }\n\n  /**\n   * Gets extended payload length (7+16).\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getPayloadLength16() {\n    if (this._bufferedBytes < 2) {\n      this._loop = false;\n      return;\n    }\n\n    this._payloadLength = this.consume(2).readUInt16BE(0);\n    return this.haveLength();\n  }\n\n  /**\n   * Gets extended payload length (7+64).\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getPayloadLength64() {\n    if (this._bufferedBytes < 8) {\n      this._loop = false;\n      return;\n    }\n\n    const buf = this.consume(8);\n    const num = buf.readUInt32BE(0);\n\n    //\n    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned\n    // if payload length is greater than this number.\n    //\n    if (num > Math.pow(2, 53 - 32) - 1) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'Unsupported WebSocket frame: payload length > 2^53 - 1',\n        false,\n        1009,\n        'WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH'\n      );\n    }\n\n    this._payloadLength = num * Math.pow(2, 32) + buf.readUInt32BE(4);\n    return this.haveLength();\n  }\n\n  /**\n   * Payload length has been read.\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  haveLength() {\n    if (this._payloadLength && this._opcode < 0x08) {\n      this._totalPayloadLength += this._payloadLength;\n      if (this._totalPayloadLength > this._maxPayload && this._maxPayload > 0) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'Max payload size exceeded',\n          false,\n          1009,\n          'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH'\n        );\n      }\n    }\n\n    if (this._masked) this._state = GET_MASK;\n    else this._state = GET_DATA;\n  }\n\n  /**\n   * Reads mask bytes.\n   *\n   * @private\n   */\n  getMask() {\n    if (this._bufferedBytes < 4) {\n      this._loop = false;\n      return;\n    }\n\n    this._mask = this.consume(4);\n    this._state = GET_DATA;\n  }\n\n  /**\n   * Reads data bytes.\n   *\n   * @param {Function} cb Callback\n   * @return {(Error|RangeError|undefined)} A possible error\n   * @private\n   */\n  getData(cb) {\n    let data = EMPTY_BUFFER;\n\n    if (this._payloadLength) {\n      if (this._bufferedBytes < this._payloadLength) {\n        this._loop = false;\n        return;\n      }\n\n      data = this.consume(this._payloadLength);\n\n      if (\n        this._masked &&\n        (this._mask[0] | this._mask[1] | this._mask[2] | this._mask[3]) !== 0\n      ) {\n        unmask(data, this._mask);\n      }\n    }\n\n    if (this._opcode > 0x07) return this.controlMessage(data);\n\n    if (this._compressed) {\n      this._state = INFLATING;\n      this.decompress(data, cb);\n      return;\n    }\n\n    if (data.length) {\n      //\n      // This message is not compressed so its length is the sum of the payload\n      // length of all fragments.\n      //\n      this._messageLength = this._totalPayloadLength;\n      this._fragments.push(data);\n    }\n\n    return this.dataMessage();\n  }\n\n  /**\n   * Decompresses data.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Function} cb Callback\n   * @private\n   */\n  decompress(data, cb) {\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n\n    perMessageDeflate.decompress(data, this._fin, (err, buf) => {\n      if (err) return cb(err);\n\n      if (buf.length) {\n        this._messageLength += buf.length;\n        if (this._messageLength > this._maxPayload && this._maxPayload > 0) {\n          return cb(\n            error(\n              RangeError,\n              'Max payload size exceeded',\n              false,\n              1009,\n              'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH'\n            )\n          );\n        }\n\n        this._fragments.push(buf);\n      }\n\n      const er = this.dataMessage();\n      if (er) return cb(er);\n\n      this.startLoop(cb);\n    });\n  }\n\n  /**\n   * Handles a data message.\n   *\n   * @return {(Error|undefined)} A possible error\n   * @private\n   */\n  dataMessage() {\n    if (this._fin) {\n      const messageLength = this._messageLength;\n      const fragments = this._fragments;\n\n      this._totalPayloadLength = 0;\n      this._messageLength = 0;\n      this._fragmented = 0;\n      this._fragments = [];\n\n      if (this._opcode === 2) {\n        let data;\n\n        if (this._binaryType === 'nodebuffer') {\n          data = concat(fragments, messageLength);\n        } else if (this._binaryType === 'arraybuffer') {\n          data = toArrayBuffer(concat(fragments, messageLength));\n        } else {\n          data = fragments;\n        }\n\n        this.emit('message', data, true);\n      } else {\n        const buf = concat(fragments, messageLength);\n\n        if (!this._skipUTF8Validation && !isValidUTF8(buf)) {\n          this._loop = false;\n          return error(\n            Error,\n            'invalid UTF-8 sequence',\n            true,\n            1007,\n            'WS_ERR_INVALID_UTF8'\n          );\n        }\n\n        this.emit('message', buf, false);\n      }\n    }\n\n    this._state = GET_INFO;\n  }\n\n  /**\n   * Handles a control message.\n   *\n   * @param {Buffer} data Data to handle\n   * @return {(Error|RangeError|undefined)} A possible error\n   * @private\n   */\n  controlMessage(data) {\n    if (this._opcode === 0x08) {\n      this._loop = false;\n\n      if (data.length === 0) {\n        this.emit('conclude', 1005, EMPTY_BUFFER);\n        this.end();\n      } else {\n        const code = data.readUInt16BE(0);\n\n        if (!isValidStatusCode(code)) {\n          return error(\n            RangeError,\n            `invalid status code ${code}`,\n            true,\n            1002,\n            'WS_ERR_INVALID_CLOSE_CODE'\n          );\n        }\n\n        const buf = new FastBuffer(\n          data.buffer,\n          data.byteOffset + 2,\n          data.length - 2\n        );\n\n        if (!this._skipUTF8Validation && !isValidUTF8(buf)) {\n          return error(\n            Error,\n            'invalid UTF-8 sequence',\n            true,\n            1007,\n            'WS_ERR_INVALID_UTF8'\n          );\n        }\n\n        this.emit('conclude', code, buf);\n        this.end();\n      }\n    } else if (this._opcode === 0x09) {\n      this.emit('ping', data);\n    } else {\n      this.emit('pong', data);\n    }\n\n    this._state = GET_INFO;\n  }\n}\n\nmodule.exports = Receiver;\n\n/**\n * Builds an error object.\n *\n * @param {function(new:Error|RangeError)} ErrorCtor The error constructor\n * @param {String} message The error message\n * @param {Boolean} prefix Specifies whether or not to add a default prefix to\n *     `message`\n * @param {Number} statusCode The status code\n * @param {String} errorCode The exposed error code\n * @return {(Error|RangeError)} The error\n * @private\n */\nfunction error(ErrorCtor, message, prefix, statusCode, errorCode) {\n  const err = new ErrorCtor(\n    prefix ? `Invalid WebSocket frame: ${message}` : message\n  );\n\n  Error.captureStackTrace(err, error);\n  err.code = errorCode;\n  err[kStatusCode] = statusCode;\n  return err;\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^net|tls$\" }] */\n\n'use strict';\n\nconst net = require('net');\nconst tls = require('tls');\nconst { randomFillSync } = require('crypto');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst { EMPTY_BUFFER } = require('./constants');\nconst { isValidStatusCode } = require('./validation');\nconst { mask: applyMask, toBuffer } = require('./buffer-util');\n\nconst kByteLength = Symbol('kByteLength');\nconst maskBuffer = Buffer.alloc(4);\n\n/**\n * HyBi Sender implementation.\n */\nclass Sender {\n  /**\n   * Creates a Sender instance.\n   *\n   * @param {(net.Socket|tls.Socket)} socket The connection socket\n   * @param {Object} [extensions] An object containing the negotiated extensions\n   * @param {Function} [generateMask] The function used to generate the masking\n   *     key\n   */\n  constructor(socket, extensions, generateMask) {\n    this._extensions = extensions || {};\n\n    if (generateMask) {\n      this._generateMask = generateMask;\n      this._maskBuffer = Buffer.alloc(4);\n    }\n\n    this._socket = socket;\n\n    this._firstFragment = true;\n    this._compress = false;\n\n    this._bufferedBytes = 0;\n    this._deflating = false;\n    this._queue = [];\n  }\n\n  /**\n   * Frames a piece of data according to the HyBi WebSocket protocol.\n   *\n   * @param {(Buffer|String)} data The data to frame\n   * @param {Object} options Options object\n   * @param {Boolean} [options.fin=false] Specifies whether or not to set the\n   *     FIN bit\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Buffer} [options.maskBuffer] The buffer used to store the masking\n   *     key\n   * @param {Number} options.opcode The opcode\n   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be\n   *     modified\n   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the\n   *     RSV1 bit\n   * @return {(Buffer|String)[]} The framed data\n   * @public\n   */\n  static frame(data, options) {\n    let mask;\n    let merge = false;\n    let offset = 2;\n    let skipMasking = false;\n\n    if (options.mask) {\n      mask = options.maskBuffer || maskBuffer;\n\n      if (options.generateMask) {\n        options.generateMask(mask);\n      } else {\n        randomFillSync(mask, 0, 4);\n      }\n\n      skipMasking = (mask[0] | mask[1] | mask[2] | mask[3]) === 0;\n      offset = 6;\n    }\n\n    let dataLength;\n\n    if (typeof data === 'string') {\n      if (\n        (!options.mask || skipMasking) &&\n        options[kByteLength] !== undefined\n      ) {\n        dataLength = options[kByteLength];\n      } else {\n        data = Buffer.from(data);\n        dataLength = data.length;\n      }\n    } else {\n      dataLength = data.length;\n      merge = options.mask && options.readOnly && !skipMasking;\n    }\n\n    let payloadLength = dataLength;\n\n    if (dataLength >= 65536) {\n      offset += 8;\n      payloadLength = 127;\n    } else if (dataLength > 125) {\n      offset += 2;\n      payloadLength = 126;\n    }\n\n    const target = Buffer.allocUnsafe(merge ? dataLength + offset : offset);\n\n    target[0] = options.fin ? options.opcode | 0x80 : options.opcode;\n    if (options.rsv1) target[0] |= 0x40;\n\n    target[1] = payloadLength;\n\n    if (payloadLength === 126) {\n      target.writeUInt16BE(dataLength, 2);\n    } else if (payloadLength === 127) {\n      target[2] = target[3] = 0;\n      target.writeUIntBE(dataLength, 4, 6);\n    }\n\n    if (!options.mask) return [target, data];\n\n    target[1] |= 0x80;\n    target[offset - 4] = mask[0];\n    target[offset - 3] = mask[1];\n    target[offset - 2] = mask[2];\n    target[offset - 1] = mask[3];\n\n    if (skipMasking) return [target, data];\n\n    if (merge) {\n      applyMask(data, mask, target, offset, dataLength);\n      return [target];\n    }\n\n    applyMask(data, mask, data, 0, dataLength);\n    return [target, data];\n  }\n\n  /**\n   * Sends a close message to the other peer.\n   *\n   * @param {Number} [code] The status code component of the body\n   * @param {(String|Buffer)} [data] The message component of the body\n   * @param {Boolean} [mask=false] Specifies whether or not to mask the message\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  close(code, data, mask, cb) {\n    let buf;\n\n    if (code === undefined) {\n      buf = EMPTY_BUFFER;\n    } else if (typeof code !== 'number' || !isValidStatusCode(code)) {\n      throw new TypeError('First argument must be a valid error code number');\n    } else if (data === undefined || !data.length) {\n      buf = Buffer.allocUnsafe(2);\n      buf.writeUInt16BE(code, 0);\n    } else {\n      const length = Buffer.byteLength(data);\n\n      if (length > 123) {\n        throw new RangeError('The message must not be greater than 123 bytes');\n      }\n\n      buf = Buffer.allocUnsafe(2 + length);\n      buf.writeUInt16BE(code, 0);\n\n      if (typeof data === 'string') {\n        buf.write(data, 2);\n      } else {\n        buf.set(data, 2);\n      }\n    }\n\n    const options = {\n      [kByteLength]: buf.length,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x08,\n      readOnly: false,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, buf, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(buf, options), cb);\n    }\n  }\n\n  /**\n   * Sends a ping message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  ping(data, mask, cb) {\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (byteLength > 125) {\n      throw new RangeError('The data size must not be greater than 125 bytes');\n    }\n\n    const options = {\n      [kByteLength]: byteLength,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x09,\n      readOnly,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, data, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(data, options), cb);\n    }\n  }\n\n  /**\n   * Sends a pong message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  pong(data, mask, cb) {\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (byteLength > 125) {\n      throw new RangeError('The data size must not be greater than 125 bytes');\n    }\n\n    const options = {\n      [kByteLength]: byteLength,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x0a,\n      readOnly,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, data, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(data, options), cb);\n    }\n  }\n\n  /**\n   * Sends a data message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Object} options Options object\n   * @param {Boolean} [options.binary=false] Specifies whether `data` is binary\n   *     or text\n   * @param {Boolean} [options.compress=false] Specifies whether or not to\n   *     compress `data`\n   * @param {Boolean} [options.fin=false] Specifies whether the fragment is the\n   *     last one\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  send(data, options, cb) {\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n    let opcode = options.binary ? 2 : 1;\n    let rsv1 = options.compress;\n\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (this._firstFragment) {\n      this._firstFragment = false;\n      if (\n        rsv1 &&\n        perMessageDeflate &&\n        perMessageDeflate.params[\n          perMessageDeflate._isServer\n            ? 'server_no_context_takeover'\n            : 'client_no_context_takeover'\n        ]\n      ) {\n        rsv1 = byteLength >= perMessageDeflate._threshold;\n      }\n      this._compress = rsv1;\n    } else {\n      rsv1 = false;\n      opcode = 0;\n    }\n\n    if (options.fin) this._firstFragment = true;\n\n    if (perMessageDeflate) {\n      const opts = {\n        [kByteLength]: byteLength,\n        fin: options.fin,\n        generateMask: this._generateMask,\n        mask: options.mask,\n        maskBuffer: this._maskBuffer,\n        opcode,\n        readOnly,\n        rsv1\n      };\n\n      if (this._deflating) {\n        this.enqueue([this.dispatch, data, this._compress, opts, cb]);\n      } else {\n        this.dispatch(data, this._compress, opts, cb);\n      }\n    } else {\n      this.sendFrame(\n        Sender.frame(data, {\n          [kByteLength]: byteLength,\n          fin: options.fin,\n          generateMask: this._generateMask,\n          mask: options.mask,\n          maskBuffer: this._maskBuffer,\n          opcode,\n          readOnly,\n          rsv1: false\n        }),\n        cb\n      );\n    }\n  }\n\n  /**\n   * Dispatches a message.\n   *\n   * @param {(Buffer|String)} data The message to send\n   * @param {Boolean} [compress=false] Specifies whether or not to compress\n   *     `data`\n   * @param {Object} options Options object\n   * @param {Boolean} [options.fin=false] Specifies whether or not to set the\n   *     FIN bit\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Buffer} [options.maskBuffer] The buffer used to store the masking\n   *     key\n   * @param {Number} options.opcode The opcode\n   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be\n   *     modified\n   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the\n   *     RSV1 bit\n   * @param {Function} [cb] Callback\n   * @private\n   */\n  dispatch(data, compress, options, cb) {\n    if (!compress) {\n      this.sendFrame(Sender.frame(data, options), cb);\n      return;\n    }\n\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n\n    this._bufferedBytes += options[kByteLength];\n    this._deflating = true;\n    perMessageDeflate.compress(data, options.fin, (_, buf) => {\n      if (this._socket.destroyed) {\n        const err = new Error(\n          'The socket was closed while data was being compressed'\n        );\n\n        if (typeof cb === 'function') cb(err);\n\n        for (let i = 0; i < this._queue.length; i++) {\n          const params = this._queue[i];\n          const callback = params[params.length - 1];\n\n          if (typeof callback === 'function') callback(err);\n        }\n\n        return;\n      }\n\n      this._bufferedBytes -= options[kByteLength];\n      this._deflating = false;\n      options.readOnly = false;\n      this.sendFrame(Sender.frame(buf, options), cb);\n      this.dequeue();\n    });\n  }\n\n  /**\n   * Executes queued send operations.\n   *\n   * @private\n   */\n  dequeue() {\n    while (!this._deflating && this._queue.length) {\n      const params = this._queue.shift();\n\n      this._bufferedBytes -= params[3][kByteLength];\n      Reflect.apply(params[0], this, params.slice(1));\n    }\n  }\n\n  /**\n   * Enqueues a send operation.\n   *\n   * @param {Array} params Send operation parameters.\n   * @private\n   */\n  enqueue(params) {\n    this._bufferedBytes += params[3][kByteLength];\n    this._queue.push(params);\n  }\n\n  /**\n   * Sends a frame.\n   *\n   * @param {Buffer[]} list The frame to send\n   * @param {Function} [cb] Callback\n   * @private\n   */\n  sendFrame(list, cb) {\n    if (list.length === 2) {\n      this._socket.cork();\n      this._socket.write(list[0]);\n      this._socket.write(list[1], cb);\n      this._socket.uncork();\n    } else {\n      this._socket.write(list[0], cb);\n    }\n  }\n}\n\nmodule.exports = Sender;\n","'use strict';\n\nconst { Duplex } = require('stream');\n\n/**\n * Emits the `'close'` event on a stream.\n *\n * @param {Duplex} stream The stream.\n * @private\n */\nfunction emitClose(stream) {\n  stream.emit('close');\n}\n\n/**\n * The listener of the `'end'` event.\n *\n * @private\n */\nfunction duplexOnEnd() {\n  if (!this.destroyed && this._writableState.finished) {\n    this.destroy();\n  }\n}\n\n/**\n * The listener of the `'error'` event.\n *\n * @param {Error} err The error\n * @private\n */\nfunction duplexOnError(err) {\n  this.removeListener('error', duplexOnError);\n  this.destroy();\n  if (this.listenerCount('error') === 0) {\n    // Do not suppress the throwing behavior.\n    this.emit('error', err);\n  }\n}\n\n/**\n * Wraps a `WebSocket` in a duplex stream.\n *\n * @param {WebSocket} ws The `WebSocket` to wrap\n * @param {Object} [options] The options for the `Duplex` constructor\n * @return {Duplex} The duplex stream\n * @public\n */\nfunction createWebSocketStream(ws, options) {\n  let terminateOnDestroy = true;\n\n  const duplex = new Duplex({\n    ...options,\n    autoDestroy: false,\n    emitClose: false,\n    objectMode: false,\n    writableObjectMode: false\n  });\n\n  ws.on('message', function message(msg, isBinary) {\n    const data =\n      !isBinary && duplex._readableState.objectMode ? msg.toString() : msg;\n\n    if (!duplex.push(data)) ws.pause();\n  });\n\n  ws.once('error', function error(err) {\n    if (duplex.destroyed) return;\n\n    // Prevent `ws.terminate()` from being called by `duplex._destroy()`.\n    //\n    // - If the `'error'` event is emitted before the `'open'` event, then\n    //   `ws.terminate()` is a noop as no socket is assigned.\n    // - Otherwise, the error is re-emitted by the listener of the `'error'`\n    //   event of the `Receiver` object. The listener already closes the\n    //   connection by calling `ws.close()`. This allows a close frame to be\n    //   sent to the other peer. If `ws.terminate()` is called right after this,\n    //   then the close frame might not be sent.\n    terminateOnDestroy = false;\n    duplex.destroy(err);\n  });\n\n  ws.once('close', function close() {\n    if (duplex.destroyed) return;\n\n    duplex.push(null);\n  });\n\n  duplex._destroy = function (err, callback) {\n    if (ws.readyState === ws.CLOSED) {\n      callback(err);\n      process.nextTick(emitClose, duplex);\n      return;\n    }\n\n    let called = false;\n\n    ws.once('error', function error(err) {\n      called = true;\n      callback(err);\n    });\n\n    ws.once('close', function close() {\n      if (!called) callback(err);\n      process.nextTick(emitClose, duplex);\n    });\n\n    if (terminateOnDestroy) ws.terminate();\n  };\n\n  duplex._final = function (callback) {\n    if (ws.readyState === ws.CONNECTING) {\n      ws.once('open', function open() {\n        duplex._final(callback);\n      });\n      return;\n    }\n\n    // If the value of the `_socket` property is `null` it means that `ws` is a\n    // client websocket and the handshake failed. In fact, when this happens, a\n    // socket is never assigned to the websocket. Wait for the `'error'` event\n    // that will be emitted by the websocket.\n    if (ws._socket === null) return;\n\n    if (ws._socket._writableState.finished) {\n      callback();\n      if (duplex._readableState.endEmitted) duplex.destroy();\n    } else {\n      ws._socket.once('finish', function finish() {\n        // `duplex` is not destroyed here because the `'end'` event will be\n        // emitted on `duplex` after this `'finish'` event. The EOF signaling\n        // `null` chunk is, in fact, pushed when the websocket emits `'close'`.\n        callback();\n      });\n      ws.close();\n    }\n  };\n\n  duplex._read = function () {\n    if (ws.isPaused) ws.resume();\n  };\n\n  duplex._write = function (chunk, encoding, callback) {\n    if (ws.readyState === ws.CONNECTING) {\n      ws.once('open', function open() {\n        duplex._write(chunk, encoding, callback);\n      });\n      return;\n    }\n\n    ws.send(chunk, callback);\n  };\n\n  duplex.on('end', duplexOnEnd);\n  duplex.on('error', duplexOnError);\n  return duplex;\n}\n\nmodule.exports = createWebSocketStream;\n","'use strict';\n\nconst { tokenChars } = require('./validation');\n\n/**\n * Parses the `Sec-WebSocket-Protocol` header into a set of subprotocol names.\n *\n * @param {String} header The field value of the header\n * @return {Set} The subprotocol names\n * @public\n */\nfunction parse(header) {\n  const protocols = new Set();\n  let start = -1;\n  let end = -1;\n  let i = 0;\n\n  for (i; i < header.length; i++) {\n    const code = header.charCodeAt(i);\n\n    if (end === -1 && tokenChars[code] === 1) {\n      if (start === -1) start = i;\n    } else if (\n      i !== 0 &&\n      (code === 0x20 /* ' ' */ || code === 0x09) /* '\\t' */\n    ) {\n      if (end === -1 && start !== -1) end = i;\n    } else if (code === 0x2c /* ',' */) {\n      if (start === -1) {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n\n      if (end === -1) end = i;\n\n      const protocol = header.slice(start, end);\n\n      if (protocols.has(protocol)) {\n        throw new SyntaxError(`The \"${protocol}\" subprotocol is duplicated`);\n      }\n\n      protocols.add(protocol);\n      start = end = -1;\n    } else {\n      throw new SyntaxError(`Unexpected character at index ${i}`);\n    }\n  }\n\n  if (start === -1 || end !== -1) {\n    throw new SyntaxError('Unexpected end of input');\n  }\n\n  const protocol = header.slice(start, i);\n\n  if (protocols.has(protocol)) {\n    throw new SyntaxError(`The \"${protocol}\" subprotocol is duplicated`);\n  }\n\n  protocols.add(protocol);\n  return protocols;\n}\n\nmodule.exports = { parse };\n","'use strict';\n\nconst { isUtf8 } = require('buffer');\n\n//\n// Allowed token characters:\n//\n// '!', '#', '$', '%', '&', ''', '*', '+', '-',\n// '.', 0-9, A-Z, '^', '_', '`', a-z, '|', '~'\n//\n// tokenChars[32] === 0 // ' '\n// tokenChars[33] === 1 // '!'\n// tokenChars[34] === 0 // '\"'\n// ...\n//\n// prettier-ignore\nconst tokenChars = [\n  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15\n  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31\n  0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, // 32 - 47\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, // 48 - 63\n  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 64 - 79\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, // 80 - 95\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 96 - 111\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0 // 112 - 127\n];\n\n/**\n * Checks if a status code is allowed in a close frame.\n *\n * @param {Number} code The status code\n * @return {Boolean} `true` if the status code is valid, else `false`\n * @public\n */\nfunction isValidStatusCode(code) {\n  return (\n    (code >= 1000 &&\n      code <= 1014 &&\n      code !== 1004 &&\n      code !== 1005 &&\n      code !== 1006) ||\n    (code >= 3000 && code <= 4999)\n  );\n}\n\n/**\n * Checks if a given buffer contains only correct UTF-8.\n * Ported from https://www.cl.cam.ac.uk/%7Emgk25/ucs/utf8_check.c by\n * Markus Kuhn.\n *\n * @param {Buffer} buf The buffer to check\n * @return {Boolean} `true` if `buf` contains only correct UTF-8, else `false`\n * @public\n */\nfunction _isValidUTF8(buf) {\n  const len = buf.length;\n  let i = 0;\n\n  while (i < len) {\n    if ((buf[i] & 0x80) === 0) {\n      // 0xxxxxxx\n      i++;\n    } else if ((buf[i] & 0xe0) === 0xc0) {\n      // 110xxxxx 10xxxxxx\n      if (\n        i + 1 === len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i] & 0xfe) === 0xc0 // Overlong\n      ) {\n        return false;\n      }\n\n      i += 2;\n    } else if ((buf[i] & 0xf0) === 0xe0) {\n      // 1110xxxx 10xxxxxx 10xxxxxx\n      if (\n        i + 2 >= len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i + 2] & 0xc0) !== 0x80 ||\n        (buf[i] === 0xe0 && (buf[i + 1] & 0xe0) === 0x80) || // Overlong\n        (buf[i] === 0xed && (buf[i + 1] & 0xe0) === 0xa0) // Surrogate (U+D800 - U+DFFF)\n      ) {\n        return false;\n      }\n\n      i += 3;\n    } else if ((buf[i] & 0xf8) === 0xf0) {\n      // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx\n      if (\n        i + 3 >= len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i + 2] & 0xc0) !== 0x80 ||\n        (buf[i + 3] & 0xc0) !== 0x80 ||\n        (buf[i] === 0xf0 && (buf[i + 1] & 0xf0) === 0x80) || // Overlong\n        (buf[i] === 0xf4 && buf[i + 1] > 0x8f) ||\n        buf[i] > 0xf4 // > U+10FFFF\n      ) {\n        return false;\n      }\n\n      i += 4;\n    } else {\n      return false;\n    }\n  }\n\n  return true;\n}\n\nmodule.exports = {\n  isValidStatusCode,\n  isValidUTF8: _isValidUTF8,\n  tokenChars\n};\n\nif (isUtf8) {\n  module.exports.isValidUTF8 = function (buf) {\n    return buf.length < 24 ? _isValidUTF8(buf) : isUtf8(buf);\n  };\n} /* istanbul ignore else  */ else if (!process.env.WS_NO_UTF_8_VALIDATE) {\n  try {\n    const isValidUTF8 = require('utf-8-validate');\n\n    module.exports.isValidUTF8 = function (buf) {\n      return buf.length < 32 ? _isValidUTF8(buf) : isValidUTF8(buf);\n    };\n  } catch (e) {\n    // Continue regardless of the error.\n  }\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^net|tls|https$\" }] */\n\n'use strict';\n\nconst EventEmitter = require('events');\nconst http = require('http');\nconst https = require('https');\nconst net = require('net');\nconst tls = require('tls');\nconst { createHash } = require('crypto');\n\nconst extension = require('./extension');\nconst PerMessageDeflate = require('./permessage-deflate');\nconst subprotocol = require('./subprotocol');\nconst WebSocket = require('./websocket');\nconst { GUID, kWebSocket } = require('./constants');\n\nconst keyRegex = /^[+/0-9A-Za-z]{22}==$/;\n\nconst RUNNING = 0;\nconst CLOSING = 1;\nconst CLOSED = 2;\n\n/**\n * Class representing a WebSocket server.\n *\n * @extends EventEmitter\n */\nclass WebSocketServer extends EventEmitter {\n  /**\n   * Create a `WebSocketServer` instance.\n   *\n   * @param {Object} options Configuration options\n   * @param {Number} [options.backlog=511] The maximum length of the queue of\n   *     pending connections\n   * @param {Boolean} [options.clientTracking=true] Specifies whether or not to\n   *     track clients\n   * @param {Function} [options.handleProtocols] A hook to handle protocols\n   * @param {String} [options.host] The hostname where to bind the server\n   * @param {Number} [options.maxPayload=104857600] The maximum allowed message\n   *     size\n   * @param {Boolean} [options.noServer=false] Enable no server mode\n   * @param {String} [options.path] Accept only connections matching this path\n   * @param {(Boolean|Object)} [options.perMessageDeflate=false] Enable/disable\n   *     permessage-deflate\n   * @param {Number} [options.port] The port where to bind the server\n   * @param {(http.Server|https.Server)} [options.server] A pre-created HTTP/S\n   *     server to use\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   * @param {Function} [options.verifyClient] A hook to reject connections\n   * @param {Function} [options.WebSocket=WebSocket] Specifies the `WebSocket`\n   *     class to use. It must be the `WebSocket` class or class that extends it\n   * @param {Function} [callback] A listener for the `listening` event\n   */\n  constructor(options, callback) {\n    super();\n\n    options = {\n      maxPayload: 100 * 1024 * 1024,\n      skipUTF8Validation: false,\n      perMessageDeflate: false,\n      handleProtocols: null,\n      clientTracking: true,\n      verifyClient: null,\n      noServer: false,\n      backlog: null, // use default (511 as implemented in net.js)\n      server: null,\n      host: null,\n      path: null,\n      port: null,\n      WebSocket,\n      ...options\n    };\n\n    if (\n      (options.port == null && !options.server && !options.noServer) ||\n      (options.port != null && (options.server || options.noServer)) ||\n      (options.server && options.noServer)\n    ) {\n      throw new TypeError(\n        'One and only one of the \"port\", \"server\", or \"noServer\" options ' +\n          'must be specified'\n      );\n    }\n\n    if (options.port != null) {\n      this._server = http.createServer((req, res) => {\n        const body = http.STATUS_CODES[426];\n\n        res.writeHead(426, {\n          'Content-Length': body.length,\n          'Content-Type': 'text/plain'\n        });\n        res.end(body);\n      });\n      this._server.listen(\n        options.port,\n        options.host,\n        options.backlog,\n        callback\n      );\n    } else if (options.server) {\n      this._server = options.server;\n    }\n\n    if (this._server) {\n      const emitConnection = this.emit.bind(this, 'connection');\n\n      this._removeListeners = addListeners(this._server, {\n        listening: this.emit.bind(this, 'listening'),\n        error: this.emit.bind(this, 'error'),\n        upgrade: (req, socket, head) => {\n          this.handleUpgrade(req, socket, head, emitConnection);\n        }\n      });\n    }\n\n    if (options.perMessageDeflate === true) options.perMessageDeflate = {};\n    if (options.clientTracking) {\n      this.clients = new Set();\n      this._shouldEmitClose = false;\n    }\n\n    this.options = options;\n    this._state = RUNNING;\n  }\n\n  /**\n   * Returns the bound address, the address family name, and port of the server\n   * as reported by the operating system if listening on an IP socket.\n   * If the server is listening on a pipe or UNIX domain socket, the name is\n   * returned as a string.\n   *\n   * @return {(Object|String|null)} The address of the server\n   * @public\n   */\n  address() {\n    if (this.options.noServer) {\n      throw new Error('The server is operating in \"noServer\" mode');\n    }\n\n    if (!this._server) return null;\n    return this._server.address();\n  }\n\n  /**\n   * Stop the server from accepting new connections and emit the `'close'` event\n   * when all existing connections are closed.\n   *\n   * @param {Function} [cb] A one-time listener for the `'close'` event\n   * @public\n   */\n  close(cb) {\n    if (this._state === CLOSED) {\n      if (cb) {\n        this.once('close', () => {\n          cb(new Error('The server is not running'));\n        });\n      }\n\n      process.nextTick(emitClose, this);\n      return;\n    }\n\n    if (cb) this.once('close', cb);\n\n    if (this._state === CLOSING) return;\n    this._state = CLOSING;\n\n    if (this.options.noServer || this.options.server) {\n      if (this._server) {\n        this._removeListeners();\n        this._removeListeners = this._server = null;\n      }\n\n      if (this.clients) {\n        if (!this.clients.size) {\n          process.nextTick(emitClose, this);\n        } else {\n          this._shouldEmitClose = true;\n        }\n      } else {\n        process.nextTick(emitClose, this);\n      }\n    } else {\n      const server = this._server;\n\n      this._removeListeners();\n      this._removeListeners = this._server = null;\n\n      //\n      // The HTTP/S server was created internally. Close it, and rely on its\n      // `'close'` event.\n      //\n      server.close(() => {\n        emitClose(this);\n      });\n    }\n  }\n\n  /**\n   * See if a given request should be handled by this server instance.\n   *\n   * @param {http.IncomingMessage} req Request object to inspect\n   * @return {Boolean} `true` if the request is valid, else `false`\n   * @public\n   */\n  shouldHandle(req) {\n    if (this.options.path) {\n      const index = req.url.indexOf('?');\n      const pathname = index !== -1 ? req.url.slice(0, index) : req.url;\n\n      if (pathname !== this.options.path) return false;\n    }\n\n    return true;\n  }\n\n  /**\n   * Handle a HTTP Upgrade request.\n   *\n   * @param {http.IncomingMessage} req The request object\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Function} cb Callback\n   * @public\n   */\n  handleUpgrade(req, socket, head, cb) {\n    socket.on('error', socketOnError);\n\n    const key = req.headers['sec-websocket-key'];\n    const version = +req.headers['sec-websocket-version'];\n\n    if (req.method !== 'GET') {\n      const message = 'Invalid HTTP method';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 405, message);\n      return;\n    }\n\n    if (req.headers.upgrade.toLowerCase() !== 'websocket') {\n      const message = 'Invalid Upgrade header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (!key || !keyRegex.test(key)) {\n      const message = 'Missing or invalid Sec-WebSocket-Key header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (version !== 8 && version !== 13) {\n      const message = 'Missing or invalid Sec-WebSocket-Version header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (!this.shouldHandle(req)) {\n      abortHandshake(socket, 400);\n      return;\n    }\n\n    const secWebSocketProtocol = req.headers['sec-websocket-protocol'];\n    let protocols = new Set();\n\n    if (secWebSocketProtocol !== undefined) {\n      try {\n        protocols = subprotocol.parse(secWebSocketProtocol);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Protocol header';\n        abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n        return;\n      }\n    }\n\n    const secWebSocketExtensions = req.headers['sec-websocket-extensions'];\n    const extensions = {};\n\n    if (\n      this.options.perMessageDeflate &&\n      secWebSocketExtensions !== undefined\n    ) {\n      const perMessageDeflate = new PerMessageDeflate(\n        this.options.perMessageDeflate,\n        true,\n        this.options.maxPayload\n      );\n\n      try {\n        const offers = extension.parse(secWebSocketExtensions);\n\n        if (offers[PerMessageDeflate.extensionName]) {\n          perMessageDeflate.accept(offers[PerMessageDeflate.extensionName]);\n          extensions[PerMessageDeflate.extensionName] = perMessageDeflate;\n        }\n      } catch (err) {\n        const message =\n          'Invalid or unacceptable Sec-WebSocket-Extensions header';\n        abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n        return;\n      }\n    }\n\n    //\n    // Optionally call external client verification handler.\n    //\n    if (this.options.verifyClient) {\n      const info = {\n        origin:\n          req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],\n        secure: !!(req.socket.authorized || req.socket.encrypted),\n        req\n      };\n\n      if (this.options.verifyClient.length === 2) {\n        this.options.verifyClient(info, (verified, code, message, headers) => {\n          if (!verified) {\n            return abortHandshake(socket, code || 401, message, headers);\n          }\n\n          this.completeUpgrade(\n            extensions,\n            key,\n            protocols,\n            req,\n            socket,\n            head,\n            cb\n          );\n        });\n        return;\n      }\n\n      if (!this.options.verifyClient(info)) return abortHandshake(socket, 401);\n    }\n\n    this.completeUpgrade(extensions, key, protocols, req, socket, head, cb);\n  }\n\n  /**\n   * Upgrade the connection to WebSocket.\n   *\n   * @param {Object} extensions The accepted extensions\n   * @param {String} key The value of the `Sec-WebSocket-Key` header\n   * @param {Set} protocols The subprotocols\n   * @param {http.IncomingMessage} req The request object\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Function} cb Callback\n   * @throws {Error} If called more than once with the same socket\n   * @private\n   */\n  completeUpgrade(extensions, key, protocols, req, socket, head, cb) {\n    //\n    // Destroy the socket if the client has already sent a FIN packet.\n    //\n    if (!socket.readable || !socket.writable) return socket.destroy();\n\n    if (socket[kWebSocket]) {\n      throw new Error(\n        'server.handleUpgrade() was called more than once with the same ' +\n          'socket, possibly due to a misconfiguration'\n      );\n    }\n\n    if (this._state > RUNNING) return abortHandshake(socket, 503);\n\n    const digest = createHash('sha1')\n      .update(key + GUID)\n      .digest('base64');\n\n    const headers = [\n      'HTTP/1.1 101 Switching Protocols',\n      'Upgrade: websocket',\n      'Connection: Upgrade',\n      `Sec-WebSocket-Accept: ${digest}`\n    ];\n\n    const ws = new this.options.WebSocket(null);\n\n    if (protocols.size) {\n      //\n      // Optionally call external protocol selection handler.\n      //\n      const protocol = this.options.handleProtocols\n        ? this.options.handleProtocols(protocols, req)\n        : protocols.values().next().value;\n\n      if (protocol) {\n        headers.push(`Sec-WebSocket-Protocol: ${protocol}`);\n        ws._protocol = protocol;\n      }\n    }\n\n    if (extensions[PerMessageDeflate.extensionName]) {\n      const params = extensions[PerMessageDeflate.extensionName].params;\n      const value = extension.format({\n        [PerMessageDeflate.extensionName]: [params]\n      });\n      headers.push(`Sec-WebSocket-Extensions: ${value}`);\n      ws._extensions = extensions;\n    }\n\n    //\n    // Allow external modification/inspection of handshake headers.\n    //\n    this.emit('headers', headers, req);\n\n    socket.write(headers.concat('\\r\\n').join('\\r\\n'));\n    socket.removeListener('error', socketOnError);\n\n    ws.setSocket(socket, head, {\n      maxPayload: this.options.maxPayload,\n      skipUTF8Validation: this.options.skipUTF8Validation\n    });\n\n    if (this.clients) {\n      this.clients.add(ws);\n      ws.on('close', () => {\n        this.clients.delete(ws);\n\n        if (this._shouldEmitClose && !this.clients.size) {\n          process.nextTick(emitClose, this);\n        }\n      });\n    }\n\n    cb(ws, req);\n  }\n}\n\nmodule.exports = WebSocketServer;\n\n/**\n * Add event listeners on an `EventEmitter` using a map of <event, listener>\n * pairs.\n *\n * @param {EventEmitter} server The event emitter\n * @param {Object.<String, Function>} map The listeners to add\n * @return {Function} A function that will remove the added listeners when\n *     called\n * @private\n */\nfunction addListeners(server, map) {\n  for (const event of Object.keys(map)) server.on(event, map[event]);\n\n  return function removeListeners() {\n    for (const event of Object.keys(map)) {\n      server.removeListener(event, map[event]);\n    }\n  };\n}\n\n/**\n * Emit a `'close'` event on an `EventEmitter`.\n *\n * @param {EventEmitter} server The event emitter\n * @private\n */\nfunction emitClose(server) {\n  server._state = CLOSED;\n  server.emit('close');\n}\n\n/**\n * Handle socket errors.\n *\n * @private\n */\nfunction socketOnError() {\n  this.destroy();\n}\n\n/**\n * Close the connection when preconditions are not fulfilled.\n *\n * @param {(net.Socket|tls.Socket)} socket The socket of the upgrade request\n * @param {Number} code The HTTP response status code\n * @param {String} [message] The HTTP response body\n * @param {Object} [headers] Additional HTTP response headers\n * @private\n */\nfunction abortHandshake(socket, code, message, headers) {\n  //\n  // The socket is writable unless the user destroyed or ended it before calling\n  // `server.handleUpgrade()` or in the `verifyClient` function, which is a user\n  // error. Handling this does not make much sense as the worst that can happen\n  // is that some of the data written by the user might be discarded due to the\n  // call to `socket.end()` below, which triggers an `'error'` event that in\n  // turn causes the socket to be destroyed.\n  //\n  message = message || http.STATUS_CODES[code];\n  headers = {\n    Connection: 'close',\n    'Content-Type': 'text/html',\n    'Content-Length': Buffer.byteLength(message),\n    ...headers\n  };\n\n  socket.once('finish', socket.destroy);\n\n  socket.end(\n    `HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\\r\\n` +\n      Object.keys(headers)\n        .map((h) => `${h}: ${headers[h]}`)\n        .join('\\r\\n') +\n      '\\r\\n\\r\\n' +\n      message\n  );\n}\n\n/**\n * Emit a `'wsClientError'` event on a `WebSocketServer` if there is at least\n * one listener for it, otherwise call `abortHandshake()`.\n *\n * @param {WebSocketServer} server The WebSocket server\n * @param {http.IncomingMessage} req The request object\n * @param {(net.Socket|tls.Socket)} socket The socket of the upgrade request\n * @param {Number} code The HTTP response status code\n * @param {String} message The HTTP response body\n * @private\n */\nfunction abortHandshakeOrEmitwsClientError(server, req, socket, code, message) {\n  if (server.listenerCount('wsClientError')) {\n    const err = new Error(message);\n    Error.captureStackTrace(err, abortHandshakeOrEmitwsClientError);\n\n    server.emit('wsClientError', err, socket, req);\n  } else {\n    abortHandshake(socket, code, message);\n  }\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^Readable$\" }] */\n\n'use strict';\n\nconst EventEmitter = require('events');\nconst https = require('https');\nconst http = require('http');\nconst net = require('net');\nconst tls = require('tls');\nconst { randomBytes, createHash } = require('crypto');\nconst { Readable } = require('stream');\nconst { URL } = require('url');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst Receiver = require('./receiver');\nconst Sender = require('./sender');\nconst {\n  BINARY_TYPES,\n  EMPTY_BUFFER,\n  GUID,\n  kForOnEventAttribute,\n  kListener,\n  kStatusCode,\n  kWebSocket,\n  NOOP\n} = require('./constants');\nconst {\n  EventTarget: { addEventListener, removeEventListener }\n} = require('./event-target');\nconst { format, parse } = require('./extension');\nconst { toBuffer } = require('./buffer-util');\n\nconst closeTimeout = 30 * 1000;\nconst kAborted = Symbol('kAborted');\nconst protocolVersions = [8, 13];\nconst readyStates = ['CONNECTING', 'OPEN', 'CLOSING', 'CLOSED'];\nconst subprotocolRegex = /^[!#$%&'*+\\-.0-9A-Z^_`|a-z~]+$/;\n\n/**\n * Class representing a WebSocket.\n *\n * @extends EventEmitter\n */\nclass WebSocket extends EventEmitter {\n  /**\n   * Create a new `WebSocket`.\n   *\n   * @param {(String|URL)} address The URL to which to connect\n   * @param {(String|String[])} [protocols] The subprotocols\n   * @param {Object} [options] Connection options\n   */\n  constructor(address, protocols, options) {\n    super();\n\n    this._binaryType = BINARY_TYPES[0];\n    this._closeCode = 1006;\n    this._closeFrameReceived = false;\n    this._closeFrameSent = false;\n    this._closeMessage = EMPTY_BUFFER;\n    this._closeTimer = null;\n    this._extensions = {};\n    this._paused = false;\n    this._protocol = '';\n    this._readyState = WebSocket.CONNECTING;\n    this._receiver = null;\n    this._sender = null;\n    this._socket = null;\n\n    if (address !== null) {\n      this._bufferedAmount = 0;\n      this._isServer = false;\n      this._redirects = 0;\n\n      if (protocols === undefined) {\n        protocols = [];\n      } else if (!Array.isArray(protocols)) {\n        if (typeof protocols === 'object' && protocols !== null) {\n          options = protocols;\n          protocols = [];\n        } else {\n          protocols = [protocols];\n        }\n      }\n\n      initAsClient(this, address, protocols, options);\n    } else {\n      this._isServer = true;\n    }\n  }\n\n  /**\n   * This deviates from the WHATWG interface since ws doesn't support the\n   * required default \"blob\" type (instead we define a custom \"nodebuffer\"\n   * type).\n   *\n   * @type {String}\n   */\n  get binaryType() {\n    return this._binaryType;\n  }\n\n  set binaryType(type) {\n    if (!BINARY_TYPES.includes(type)) return;\n\n    this._binaryType = type;\n\n    //\n    // Allow to change `binaryType` on the fly.\n    //\n    if (this._receiver) this._receiver._binaryType = type;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get bufferedAmount() {\n    if (!this._socket) return this._bufferedAmount;\n\n    return this._socket._writableState.length + this._sender._bufferedBytes;\n  }\n\n  /**\n   * @type {String}\n   */\n  get extensions() {\n    return Object.keys(this._extensions).join();\n  }\n\n  /**\n   * @type {Boolean}\n   */\n  get isPaused() {\n    return this._paused;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onclose() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onerror() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onopen() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onmessage() {\n    return null;\n  }\n\n  /**\n   * @type {String}\n   */\n  get protocol() {\n    return this._protocol;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get readyState() {\n    return this._readyState;\n  }\n\n  /**\n   * @type {String}\n   */\n  get url() {\n    return this._url;\n  }\n\n  /**\n   * Set up the socket and the internal resources.\n   *\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Object} options Options object\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Number} [options.maxPayload=0] The maximum allowed message size\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   * @private\n   */\n  setSocket(socket, head, options) {\n    const receiver = new Receiver({\n      binaryType: this.binaryType,\n      extensions: this._extensions,\n      isServer: this._isServer,\n      maxPayload: options.maxPayload,\n      skipUTF8Validation: options.skipUTF8Validation\n    });\n\n    this._sender = new Sender(socket, this._extensions, options.generateMask);\n    this._receiver = receiver;\n    this._socket = socket;\n\n    receiver[kWebSocket] = this;\n    socket[kWebSocket] = this;\n\n    receiver.on('conclude', receiverOnConclude);\n    receiver.on('drain', receiverOnDrain);\n    receiver.on('error', receiverOnError);\n    receiver.on('message', receiverOnMessage);\n    receiver.on('ping', receiverOnPing);\n    receiver.on('pong', receiverOnPong);\n\n    socket.setTimeout(0);\n    socket.setNoDelay();\n\n    if (head.length > 0) socket.unshift(head);\n\n    socket.on('close', socketOnClose);\n    socket.on('data', socketOnData);\n    socket.on('end', socketOnEnd);\n    socket.on('error', socketOnError);\n\n    this._readyState = WebSocket.OPEN;\n    this.emit('open');\n  }\n\n  /**\n   * Emit the `'close'` event.\n   *\n   * @private\n   */\n  emitClose() {\n    if (!this._socket) {\n      this._readyState = WebSocket.CLOSED;\n      this.emit('close', this._closeCode, this._closeMessage);\n      return;\n    }\n\n    if (this._extensions[PerMessageDeflate.extensionName]) {\n      this._extensions[PerMessageDeflate.extensionName].cleanup();\n    }\n\n    this._receiver.removeAllListeners();\n    this._readyState = WebSocket.CLOSED;\n    this.emit('close', this._closeCode, this._closeMessage);\n  }\n\n  /**\n   * Start a closing handshake.\n   *\n   *          +----------+   +-----------+   +----------+\n   *     - - -|ws.close()|-->|close frame|-->|ws.close()|- - -\n   *    |     +----------+   +-----------+   +----------+     |\n   *          +----------+   +-----------+         |\n   * CLOSING  |ws.close()|<--|close frame|<--+-----+       CLOSING\n   *          +----------+   +-----------+   |\n   *    |           |                        |   +---+        |\n   *                +------------------------+-->|fin| - - - -\n   *    |         +---+                      |   +---+\n   *     - - - - -|fin|<---------------------+\n   *              +---+\n   *\n   * @param {Number} [code] Status code explaining why the connection is closing\n   * @param {(String|Buffer)} [data] The reason why the connection is\n   *     closing\n   * @public\n   */\n  close(code, data) {\n    if (this.readyState === WebSocket.CLOSED) return;\n    if (this.readyState === WebSocket.CONNECTING) {\n      const msg = 'WebSocket was closed before the connection was established';\n      abortHandshake(this, this._req, msg);\n      return;\n    }\n\n    if (this.readyState === WebSocket.CLOSING) {\n      if (\n        this._closeFrameSent &&\n        (this._closeFrameReceived || this._receiver._writableState.errorEmitted)\n      ) {\n        this._socket.end();\n      }\n\n      return;\n    }\n\n    this._readyState = WebSocket.CLOSING;\n    this._sender.close(code, data, !this._isServer, (err) => {\n      //\n      // This error is handled by the `'error'` listener on the socket. We only\n      // want to know if the close frame has been sent here.\n      //\n      if (err) return;\n\n      this._closeFrameSent = true;\n\n      if (\n        this._closeFrameReceived ||\n        this._receiver._writableState.errorEmitted\n      ) {\n        this._socket.end();\n      }\n    });\n\n    //\n    // Specify a timeout for the closing handshake to complete.\n    //\n    this._closeTimer = setTimeout(\n      this._socket.destroy.bind(this._socket),\n      closeTimeout\n    );\n  }\n\n  /**\n   * Pause the socket.\n   *\n   * @public\n   */\n  pause() {\n    if (\n      this.readyState === WebSocket.CONNECTING ||\n      this.readyState === WebSocket.CLOSED\n    ) {\n      return;\n    }\n\n    this._paused = true;\n    this._socket.pause();\n  }\n\n  /**\n   * Send a ping.\n   *\n   * @param {*} [data] The data to send\n   * @param {Boolean} [mask] Indicates whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when the ping is sent\n   * @public\n   */\n  ping(data, mask, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof data === 'function') {\n      cb = data;\n      data = mask = undefined;\n    } else if (typeof mask === 'function') {\n      cb = mask;\n      mask = undefined;\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    if (mask === undefined) mask = !this._isServer;\n    this._sender.ping(data || EMPTY_BUFFER, mask, cb);\n  }\n\n  /**\n   * Send a pong.\n   *\n   * @param {*} [data] The data to send\n   * @param {Boolean} [mask] Indicates whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when the pong is sent\n   * @public\n   */\n  pong(data, mask, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof data === 'function') {\n      cb = data;\n      data = mask = undefined;\n    } else if (typeof mask === 'function') {\n      cb = mask;\n      mask = undefined;\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    if (mask === undefined) mask = !this._isServer;\n    this._sender.pong(data || EMPTY_BUFFER, mask, cb);\n  }\n\n  /**\n   * Resume the socket.\n   *\n   * @public\n   */\n  resume() {\n    if (\n      this.readyState === WebSocket.CONNECTING ||\n      this.readyState === WebSocket.CLOSED\n    ) {\n      return;\n    }\n\n    this._paused = false;\n    if (!this._receiver._writableState.needDrain) this._socket.resume();\n  }\n\n  /**\n   * Send a data message.\n   *\n   * @param {*} data The message to send\n   * @param {Object} [options] Options object\n   * @param {Boolean} [options.binary] Specifies whether `data` is binary or\n   *     text\n   * @param {Boolean} [options.compress] Specifies whether or not to compress\n   *     `data`\n   * @param {Boolean} [options.fin=true] Specifies whether the fragment is the\n   *     last one\n   * @param {Boolean} [options.mask] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when data is written out\n   * @public\n   */\n  send(data, options, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof options === 'function') {\n      cb = options;\n      options = {};\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    const opts = {\n      binary: typeof data !== 'string',\n      mask: !this._isServer,\n      compress: true,\n      fin: true,\n      ...options\n    };\n\n    if (!this._extensions[PerMessageDeflate.extensionName]) {\n      opts.compress = false;\n    }\n\n    this._sender.send(data || EMPTY_BUFFER, opts, cb);\n  }\n\n  /**\n   * Forcibly close the connection.\n   *\n   * @public\n   */\n  terminate() {\n    if (this.readyState === WebSocket.CLOSED) return;\n    if (this.readyState === WebSocket.CONNECTING) {\n      const msg = 'WebSocket was closed before the connection was established';\n      abortHandshake(this, this._req, msg);\n      return;\n    }\n\n    if (this._socket) {\n      this._readyState = WebSocket.CLOSING;\n      this._socket.destroy();\n    }\n  }\n}\n\n/**\n * @constant {Number} CONNECTING\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CONNECTING', {\n  enumerable: true,\n  value: readyStates.indexOf('CONNECTING')\n});\n\n/**\n * @constant {Number} CONNECTING\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CONNECTING', {\n  enumerable: true,\n  value: readyStates.indexOf('CONNECTING')\n});\n\n/**\n * @constant {Number} OPEN\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'OPEN', {\n  enumerable: true,\n  value: readyStates.indexOf('OPEN')\n});\n\n/**\n * @constant {Number} OPEN\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'OPEN', {\n  enumerable: true,\n  value: readyStates.indexOf('OPEN')\n});\n\n/**\n * @constant {Number} CLOSING\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CLOSING', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSING')\n});\n\n/**\n * @constant {Number} CLOSING\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CLOSING', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSING')\n});\n\n/**\n * @constant {Number} CLOSED\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CLOSED', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSED')\n});\n\n/**\n * @constant {Number} CLOSED\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CLOSED', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSED')\n});\n\n[\n  'binaryType',\n  'bufferedAmount',\n  'extensions',\n  'isPaused',\n  'protocol',\n  'readyState',\n  'url'\n].forEach((property) => {\n  Object.defineProperty(WebSocket.prototype, property, { enumerable: true });\n});\n\n//\n// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.\n// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface\n//\n['open', 'error', 'close', 'message'].forEach((method) => {\n  Object.defineProperty(WebSocket.prototype, `on${method}`, {\n    enumerable: true,\n    get() {\n      for (const listener of this.listeners(method)) {\n        if (listener[kForOnEventAttribute]) return listener[kListener];\n      }\n\n      return null;\n    },\n    set(handler) {\n      for (const listener of this.listeners(method)) {\n        if (listener[kForOnEventAttribute]) {\n          this.removeListener(method, listener);\n          break;\n        }\n      }\n\n      if (typeof handler !== 'function') return;\n\n      this.addEventListener(method, handler, {\n        [kForOnEventAttribute]: true\n      });\n    }\n  });\n});\n\nWebSocket.prototype.addEventListener = addEventListener;\nWebSocket.prototype.removeEventListener = removeEventListener;\n\nmodule.exports = WebSocket;\n\n/**\n * Initialize a WebSocket client.\n *\n * @param {WebSocket} websocket The client to initialize\n * @param {(String|URL)} address The URL to which to connect\n * @param {Array} protocols The subprotocols\n * @param {Object} [options] Connection options\n * @param {Boolean} [options.followRedirects=false] Whether or not to follow\n *     redirects\n * @param {Function} [options.generateMask] The function used to generate the\n *     masking key\n * @param {Number} [options.handshakeTimeout] Timeout in milliseconds for the\n *     handshake request\n * @param {Number} [options.maxPayload=104857600] The maximum allowed message\n *     size\n * @param {Number} [options.maxRedirects=10] The maximum number of redirects\n *     allowed\n * @param {String} [options.origin] Value of the `Origin` or\n *     `Sec-WebSocket-Origin` header\n * @param {(Boolean|Object)} [options.perMessageDeflate=true] Enable/disable\n *     permessage-deflate\n * @param {Number} [options.protocolVersion=13] Value of the\n *     `Sec-WebSocket-Version` header\n * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n *     not to skip UTF-8 validation for text and close messages\n * @private\n */\nfunction initAsClient(websocket, address, protocols, options) {\n  const opts = {\n    protocolVersion: protocolVersions[1],\n    maxPayload: 100 * 1024 * 1024,\n    skipUTF8Validation: false,\n    perMessageDeflate: true,\n    followRedirects: false,\n    maxRedirects: 10,\n    ...options,\n    createConnection: undefined,\n    socketPath: undefined,\n    hostname: undefined,\n    protocol: undefined,\n    timeout: undefined,\n    method: 'GET',\n    host: undefined,\n    path: undefined,\n    port: undefined\n  };\n\n  if (!protocolVersions.includes(opts.protocolVersion)) {\n    throw new RangeError(\n      `Unsupported protocol version: ${opts.protocolVersion} ` +\n        `(supported versions: ${protocolVersions.join(', ')})`\n    );\n  }\n\n  let parsedUrl;\n\n  if (address instanceof URL) {\n    parsedUrl = address;\n    websocket._url = address.href;\n  } else {\n    try {\n      parsedUrl = new URL(address);\n    } catch (e) {\n      throw new SyntaxError(`Invalid URL: ${address}`);\n    }\n\n    websocket._url = address;\n  }\n\n  const isSecure = parsedUrl.protocol === 'wss:';\n  const isIpcUrl = parsedUrl.protocol === 'ws+unix:';\n  let invalidUrlMessage;\n\n  if (parsedUrl.protocol !== 'ws:' && !isSecure && !isIpcUrl) {\n    invalidUrlMessage =\n      'The URL\\'s protocol must be one of \"ws:\", \"wss:\", or \"ws+unix:\"';\n  } else if (isIpcUrl && !parsedUrl.pathname) {\n    invalidUrlMessage = \"The URL's pathname is empty\";\n  } else if (parsedUrl.hash) {\n    invalidUrlMessage = 'The URL contains a fragment identifier';\n  }\n\n  if (invalidUrlMessage) {\n    const err = new SyntaxError(invalidUrlMessage);\n\n    if (websocket._redirects === 0) {\n      throw err;\n    } else {\n      emitErrorAndClose(websocket, err);\n      return;\n    }\n  }\n\n  const defaultPort = isSecure ? 443 : 80;\n  const key = randomBytes(16).toString('base64');\n  const request = isSecure ? https.request : http.request;\n  const protocolSet = new Set();\n  let perMessageDeflate;\n\n  opts.createConnection = isSecure ? tlsConnect : netConnect;\n  opts.defaultPort = opts.defaultPort || defaultPort;\n  opts.port = parsedUrl.port || defaultPort;\n  opts.host = parsedUrl.hostname.startsWith('[')\n    ? parsedUrl.hostname.slice(1, -1)\n    : parsedUrl.hostname;\n  opts.headers = {\n    ...opts.headers,\n    'Sec-WebSocket-Version': opts.protocolVersion,\n    'Sec-WebSocket-Key': key,\n    Connection: 'Upgrade',\n    Upgrade: 'websocket'\n  };\n  opts.path = parsedUrl.pathname + parsedUrl.search;\n  opts.timeout = opts.handshakeTimeout;\n\n  if (opts.perMessageDeflate) {\n    perMessageDeflate = new PerMessageDeflate(\n      opts.perMessageDeflate !== true ? opts.perMessageDeflate : {},\n      false,\n      opts.maxPayload\n    );\n    opts.headers['Sec-WebSocket-Extensions'] = format({\n      [PerMessageDeflate.extensionName]: perMessageDeflate.offer()\n    });\n  }\n  if (protocols.length) {\n    for (const protocol of protocols) {\n      if (\n        typeof protocol !== 'string' ||\n        !subprotocolRegex.test(protocol) ||\n        protocolSet.has(protocol)\n      ) {\n        throw new SyntaxError(\n          'An invalid or duplicated subprotocol was specified'\n        );\n      }\n\n      protocolSet.add(protocol);\n    }\n\n    opts.headers['Sec-WebSocket-Protocol'] = protocols.join(',');\n  }\n  if (opts.origin) {\n    if (opts.protocolVersion < 13) {\n      opts.headers['Sec-WebSocket-Origin'] = opts.origin;\n    } else {\n      opts.headers.Origin = opts.origin;\n    }\n  }\n  if (parsedUrl.username || parsedUrl.password) {\n    opts.auth = `${parsedUrl.username}:${parsedUrl.password}`;\n  }\n\n  if (isIpcUrl) {\n    const parts = opts.path.split(':');\n\n    opts.socketPath = parts[0];\n    opts.path = parts[1];\n  }\n\n  let req;\n\n  if (opts.followRedirects) {\n    if (websocket._redirects === 0) {\n      websocket._originalIpc = isIpcUrl;\n      websocket._originalSecure = isSecure;\n      websocket._originalHostOrSocketPath = isIpcUrl\n        ? opts.socketPath\n        : parsedUrl.host;\n\n      const headers = options && options.headers;\n\n      //\n      // Shallow copy the user provided options so that headers can be changed\n      // without mutating the original object.\n      //\n      options = { ...options, headers: {} };\n\n      if (headers) {\n        for (const [key, value] of Object.entries(headers)) {\n          options.headers[key.toLowerCase()] = value;\n        }\n      }\n    } else if (websocket.listenerCount('redirect') === 0) {\n      const isSameHost = isIpcUrl\n        ? websocket._originalIpc\n          ? opts.socketPath === websocket._originalHostOrSocketPath\n          : false\n        : websocket._originalIpc\n        ? false\n        : parsedUrl.host === websocket._originalHostOrSocketPath;\n\n      if (!isSameHost || (websocket._originalSecure && !isSecure)) {\n        //\n        // Match curl 7.77.0 behavior and drop the following headers. These\n        // headers are also dropped when following a redirect to a subdomain.\n        //\n        delete opts.headers.authorization;\n        delete opts.headers.cookie;\n\n        if (!isSameHost) delete opts.headers.host;\n\n        opts.auth = undefined;\n      }\n    }\n\n    //\n    // Match curl 7.77.0 behavior and make the first `Authorization` header win.\n    // If the `Authorization` header is set, then there is nothing to do as it\n    // will take precedence.\n    //\n    if (opts.auth && !options.headers.authorization) {\n      options.headers.authorization =\n        'Basic ' + Buffer.from(opts.auth).toString('base64');\n    }\n\n    req = websocket._req = request(opts);\n\n    if (websocket._redirects) {\n      //\n      // Unlike what is done for the `'upgrade'` event, no early exit is\n      // triggered here if the user calls `websocket.close()` or\n      // `websocket.terminate()` from a listener of the `'redirect'` event. This\n      // is because the user can also call `request.destroy()` with an error\n      // before calling `websocket.close()` or `websocket.terminate()` and this\n      // would result in an error being emitted on the `request` object with no\n      // `'error'` event listeners attached.\n      //\n      websocket.emit('redirect', websocket.url, req);\n    }\n  } else {\n    req = websocket._req = request(opts);\n  }\n\n  if (opts.timeout) {\n    req.on('timeout', () => {\n      abortHandshake(websocket, req, 'Opening handshake has timed out');\n    });\n  }\n\n  req.on('error', (err) => {\n    if (req === null || req[kAborted]) return;\n\n    req = websocket._req = null;\n    emitErrorAndClose(websocket, err);\n  });\n\n  req.on('response', (res) => {\n    const location = res.headers.location;\n    const statusCode = res.statusCode;\n\n    if (\n      location &&\n      opts.followRedirects &&\n      statusCode >= 300 &&\n      statusCode < 400\n    ) {\n      if (++websocket._redirects > opts.maxRedirects) {\n        abortHandshake(websocket, req, 'Maximum redirects exceeded');\n        return;\n      }\n\n      req.abort();\n\n      let addr;\n\n      try {\n        addr = new URL(location, address);\n      } catch (e) {\n        const err = new SyntaxError(`Invalid URL: ${location}`);\n        emitErrorAndClose(websocket, err);\n        return;\n      }\n\n      initAsClient(websocket, addr, protocols, options);\n    } else if (!websocket.emit('unexpected-response', req, res)) {\n      abortHandshake(\n        websocket,\n        req,\n        `Unexpected server response: ${res.statusCode}`\n      );\n    }\n  });\n\n  req.on('upgrade', (res, socket, head) => {\n    websocket.emit('upgrade', res);\n\n    //\n    // The user may have closed the connection from a listener of the\n    // `'upgrade'` event.\n    //\n    if (websocket.readyState !== WebSocket.CONNECTING) return;\n\n    req = websocket._req = null;\n\n    if (res.headers.upgrade.toLowerCase() !== 'websocket') {\n      abortHandshake(websocket, socket, 'Invalid Upgrade header');\n      return;\n    }\n\n    const digest = createHash('sha1')\n      .update(key + GUID)\n      .digest('base64');\n\n    if (res.headers['sec-websocket-accept'] !== digest) {\n      abortHandshake(websocket, socket, 'Invalid Sec-WebSocket-Accept header');\n      return;\n    }\n\n    const serverProt = res.headers['sec-websocket-protocol'];\n    let protError;\n\n    if (serverProt !== undefined) {\n      if (!protocolSet.size) {\n        protError = 'Server sent a subprotocol but none was requested';\n      } else if (!protocolSet.has(serverProt)) {\n        protError = 'Server sent an invalid subprotocol';\n      }\n    } else if (protocolSet.size) {\n      protError = 'Server sent no subprotocol';\n    }\n\n    if (protError) {\n      abortHandshake(websocket, socket, protError);\n      return;\n    }\n\n    if (serverProt) websocket._protocol = serverProt;\n\n    const secWebSocketExtensions = res.headers['sec-websocket-extensions'];\n\n    if (secWebSocketExtensions !== undefined) {\n      if (!perMessageDeflate) {\n        const message =\n          'Server sent a Sec-WebSocket-Extensions header but no extension ' +\n          'was requested';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      let extensions;\n\n      try {\n        extensions = parse(secWebSocketExtensions);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Extensions header';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      const extensionNames = Object.keys(extensions);\n\n      if (\n        extensionNames.length !== 1 ||\n        extensionNames[0] !== PerMessageDeflate.extensionName\n      ) {\n        const message = 'Server indicated an extension that was not requested';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      try {\n        perMessageDeflate.accept(extensions[PerMessageDeflate.extensionName]);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Extensions header';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      websocket._extensions[PerMessageDeflate.extensionName] =\n        perMessageDeflate;\n    }\n\n    websocket.setSocket(socket, head, {\n      generateMask: opts.generateMask,\n      maxPayload: opts.maxPayload,\n      skipUTF8Validation: opts.skipUTF8Validation\n    });\n  });\n\n  if (opts.finishRequest) {\n    opts.finishRequest(req, websocket);\n  } else {\n    req.end();\n  }\n}\n\n/**\n * Emit the `'error'` and `'close'` events.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {Error} The error to emit\n * @private\n */\nfunction emitErrorAndClose(websocket, err) {\n  websocket._readyState = WebSocket.CLOSING;\n  websocket.emit('error', err);\n  websocket.emitClose();\n}\n\n/**\n * Create a `net.Socket` and initiate a connection.\n *\n * @param {Object} options Connection options\n * @return {net.Socket} The newly created socket used to start the connection\n * @private\n */\nfunction netConnect(options) {\n  options.path = options.socketPath;\n  return net.connect(options);\n}\n\n/**\n * Create a `tls.TLSSocket` and initiate a connection.\n *\n * @param {Object} options Connection options\n * @return {tls.TLSSocket} The newly created socket used to start the connection\n * @private\n */\nfunction tlsConnect(options) {\n  options.path = undefined;\n\n  if (!options.servername && options.servername !== '') {\n    options.servername = net.isIP(options.host) ? '' : options.host;\n  }\n\n  return tls.connect(options);\n}\n\n/**\n * Abort the handshake and emit an error.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {(http.ClientRequest|net.Socket|tls.Socket)} stream The request to\n *     abort or the socket to destroy\n * @param {String} message The error message\n * @private\n */\nfunction abortHandshake(websocket, stream, message) {\n  websocket._readyState = WebSocket.CLOSING;\n\n  const err = new Error(message);\n  Error.captureStackTrace(err, abortHandshake);\n\n  if (stream.setHeader) {\n    stream[kAborted] = true;\n    stream.abort();\n\n    if (stream.socket && !stream.socket.destroyed) {\n      //\n      // On Node.js >= 14.3.0 `request.abort()` does not destroy the socket if\n      // called after the request completed. See\n      // https://github.com/websockets/ws/issues/1869.\n      //\n      stream.socket.destroy();\n    }\n\n    process.nextTick(emitErrorAndClose, websocket, err);\n  } else {\n    stream.destroy(err);\n    stream.once('error', websocket.emit.bind(websocket, 'error'));\n    stream.once('close', websocket.emitClose.bind(websocket));\n  }\n}\n\n/**\n * Handle cases where the `ping()`, `pong()`, or `send()` methods are called\n * when the `readyState` attribute is `CLOSING` or `CLOSED`.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {*} [data] The data to send\n * @param {Function} [cb] Callback\n * @private\n */\nfunction sendAfterClose(websocket, data, cb) {\n  if (data) {\n    const length = toBuffer(data).length;\n\n    //\n    // The `_bufferedAmount` property is used only when the peer is a client and\n    // the opening handshake fails. Under these circumstances, in fact, the\n    // `setSocket()` method is not called, so the `_socket` and `_sender`\n    // properties are set to `null`.\n    //\n    if (websocket._socket) websocket._sender._bufferedBytes += length;\n    else websocket._bufferedAmount += length;\n  }\n\n  if (cb) {\n    const err = new Error(\n      `WebSocket is not open: readyState ${websocket.readyState} ` +\n        `(${readyStates[websocket.readyState]})`\n    );\n    process.nextTick(cb, err);\n  }\n}\n\n/**\n * The listener of the `Receiver` `'conclude'` event.\n *\n * @param {Number} code The status code\n * @param {Buffer} reason The reason for closing\n * @private\n */\nfunction receiverOnConclude(code, reason) {\n  const websocket = this[kWebSocket];\n\n  websocket._closeFrameReceived = true;\n  websocket._closeMessage = reason;\n  websocket._closeCode = code;\n\n  if (websocket._socket[kWebSocket] === undefined) return;\n\n  websocket._socket.removeListener('data', socketOnData);\n  process.nextTick(resume, websocket._socket);\n\n  if (code === 1005) websocket.close();\n  else websocket.close(code, reason);\n}\n\n/**\n * The listener of the `Receiver` `'drain'` event.\n *\n * @private\n */\nfunction receiverOnDrain() {\n  const websocket = this[kWebSocket];\n\n  if (!websocket.isPaused) websocket._socket.resume();\n}\n\n/**\n * The listener of the `Receiver` `'error'` event.\n *\n * @param {(RangeError|Error)} err The emitted error\n * @private\n */\nfunction receiverOnError(err) {\n  const websocket = this[kWebSocket];\n\n  if (websocket._socket[kWebSocket] !== undefined) {\n    websocket._socket.removeListener('data', socketOnData);\n\n    //\n    // On Node.js < 14.0.0 the `'error'` event is emitted synchronously. See\n    // https://github.com/websockets/ws/issues/1940.\n    //\n    process.nextTick(resume, websocket._socket);\n\n    websocket.close(err[kStatusCode]);\n  }\n\n  websocket.emit('error', err);\n}\n\n/**\n * The listener of the `Receiver` `'finish'` event.\n *\n * @private\n */\nfunction receiverOnFinish() {\n  this[kWebSocket].emitClose();\n}\n\n/**\n * The listener of the `Receiver` `'message'` event.\n *\n * @param {Buffer|ArrayBuffer|Buffer[])} data The message\n * @param {Boolean} isBinary Specifies whether the message is binary or not\n * @private\n */\nfunction receiverOnMessage(data, isBinary) {\n  this[kWebSocket].emit('message', data, isBinary);\n}\n\n/**\n * The listener of the `Receiver` `'ping'` event.\n *\n * @param {Buffer} data The data included in the ping frame\n * @private\n */\nfunction receiverOnPing(data) {\n  const websocket = this[kWebSocket];\n\n  websocket.pong(data, !websocket._isServer, NOOP);\n  websocket.emit('ping', data);\n}\n\n/**\n * The listener of the `Receiver` `'pong'` event.\n *\n * @param {Buffer} data The data included in the pong frame\n * @private\n */\nfunction receiverOnPong(data) {\n  this[kWebSocket].emit('pong', data);\n}\n\n/**\n * Resume a readable stream\n *\n * @param {Readable} stream The readable stream\n * @private\n */\nfunction resume(stream) {\n  stream.resume();\n}\n\n/**\n * The listener of the `net.Socket` `'close'` event.\n *\n * @private\n */\nfunction socketOnClose() {\n  const websocket = this[kWebSocket];\n\n  this.removeListener('close', socketOnClose);\n  this.removeListener('data', socketOnData);\n  this.removeListener('end', socketOnEnd);\n\n  websocket._readyState = WebSocket.CLOSING;\n\n  let chunk;\n\n  //\n  // The close frame might not have been received or the `'end'` event emitted,\n  // for example, if the socket was destroyed due to an error. Ensure that the\n  // `receiver` stream is closed after writing any remaining buffered data to\n  // it. If the readable side of the socket is in flowing mode then there is no\n  // buffered data as everything has been already written and `readable.read()`\n  // will return `null`. If instead, the socket is paused, any possible buffered\n  // data will be read as a single chunk.\n  //\n  if (\n    !this._readableState.endEmitted &&\n    !websocket._closeFrameReceived &&\n    !websocket._receiver._writableState.errorEmitted &&\n    (chunk = websocket._socket.read()) !== null\n  ) {\n    websocket._receiver.write(chunk);\n  }\n\n  websocket._receiver.end();\n\n  this[kWebSocket] = undefined;\n\n  clearTimeout(websocket._closeTimer);\n\n  if (\n    websocket._receiver._writableState.finished ||\n    websocket._receiver._writableState.errorEmitted\n  ) {\n    websocket.emitClose();\n  } else {\n    websocket._receiver.on('error', receiverOnFinish);\n    websocket._receiver.on('finish', receiverOnFinish);\n  }\n}\n\n/**\n * The listener of the `net.Socket` `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction socketOnData(chunk) {\n  if (!this[kWebSocket]._receiver.write(chunk)) {\n    this.pause();\n  }\n}\n\n/**\n * The listener of the `net.Socket` `'end'` event.\n *\n * @private\n */\nfunction socketOnEnd() {\n  const websocket = this[kWebSocket];\n\n  websocket._readyState = WebSocket.CLOSING;\n  websocket._receiver.end();\n  this.end();\n}\n\n/**\n * The listener of the `net.Socket` `'error'` event.\n *\n * @private\n */\nfunction socketOnError() {\n  const websocket = this[kWebSocket];\n\n  this.removeListener('error', socketOnError);\n  this.on('error', NOOP);\n\n  if (websocket) {\n    websocket._readyState = WebSocket.CLOSING;\n    this.destroy();\n  }\n}\n","import { createReadStream, existsSync } from 'node:fs';\r\nimport { IncomingMessage, ServerResponse } from 'node:http';\r\nimport { resolve, join, extname } from 'node:path';\r\nimport { cacheHeader } from 'pretty-cache-header';\r\n\r\nconst mimeLookup = {\r\n  '.js': 'application/javascript,charset=UTF-8',\r\n  '.html': 'text/html,charset=UTF-8',\r\n  '.css': 'text/css; charset=UTF-8',\r\n};\r\nconst staticPath = 'dist/apps/cf-page/';\r\nconst file401 = 'dist/apps/node-vless/assets/401.html';\r\nlet filepath = null;\r\nexport function serverStaticFile(req: IncomingMessage, resp: ServerResponse) {\r\n  const url = new URL(req.url, `http://${req.headers['host']}`);\r\n  let fileurl = url.pathname;\r\n  fileurl = join(staticPath, fileurl);\r\n  console.log('....', fileurl);\r\n  filepath = resolve(fileurl);\r\n  console.log(filepath);\r\n\r\n  if (existsSync(filepath)) {\r\n    let fileExt = extname(filepath);\r\n    console.log('fileExt', fileExt);\r\n    let mimeType = mimeLookup[fileExt];\r\n\r\n    resp.writeHead(200, {\r\n      'Content-Type': mimeType,\r\n      'Cache-Control': cacheHeader({\r\n        public: true,\r\n        maxAge: '1year',\r\n        staleWhileRevalidate: '1year',\r\n      }),\r\n    });\r\n    return createReadStream(filepath).pipe(resp);\r\n  } else {\r\n    resp.writeHead(404);\r\n    resp.write('not found');\r\n    resp.end();\r\n    return resp;\r\n  }\r\n}\r\n\r\nexport function index401(req: IncomingMessage, resp: ServerResponse) {\r\n  const file401Path = resolve(file401);\r\n  if (existsSync(file401Path)) {\r\n    createReadStream(file401Path).pipe(resp);\r\n  } else {\r\n    resp.writeHead(401);\r\n    resp.write('UUID env not set');\r\n    resp.end();\r\n  }\r\n}\r\n\r\nexport function serverIndexPage(\r\n  req: IncomingMessage,\r\n  resp: ServerResponse,\r\n  uuid\r\n) {\r\n  // if()\r\n}\r\n","export {\r\n  delay,\r\n  makeReadableWebSocketStream,\r\n  safeCloseWebSocket as closeWebSocket,\r\n  processVlessHeader,\r\n  vlessJs,\r\n} from './lib/vless-js';\r\n","import { stringify } from 'uuid';\r\nexport function vlessJs(): string {\r\n  return 'vless-js';\r\n}\r\n\r\nexport function delay(ms: number) {\r\n  return new Promise((resolve, rej) => {\r\n    setTimeout(resolve, ms);\r\n  });\r\n}\r\n\r\nexport function makeReadableWebSocketStream(\r\n  ws: WebSocket | any,\r\n  earlyDataHeader: string,\r\n  log: Function\r\n) {\r\n  let readableStreamCancel = false;\r\n  return new ReadableStream<ArrayBuffer>({\r\n    start(controller) {\r\n      ws.addEventListener('message', async (e: { data: ArrayBuffer }) => {\r\n        // is stream is cancel, skip controller.enqueue\r\n        if (readableStreamCancel) {\r\n          return;\r\n        }\r\n        const vlessBuffer: ArrayBuffer = e.data;\r\n        // console.log('MESSAGE', vlessBuffer);\r\n        // console.log(`message is ${vlessBuffer.byteLength}`);\r\n        // this is not backpressure, but backpressure is depends on underying websocket can pasue\r\n        // https://streams.spec.whatwg.org/#example-rs-push-backpressure\r\n        controller.enqueue(vlessBuffer);\r\n      });\r\n      ws.addEventListener('error', (e: any) => {\r\n        log('socket has error');\r\n        readableStreamCancel = true;\r\n        controller.error(e);\r\n      });\r\n      ws.addEventListener('close', () => {\r\n        try {\r\n          log('webSocket is close');\r\n          // is stream is cancel, skip controller.close\r\n          if (readableStreamCancel) {\r\n            return;\r\n          }\r\n          controller.close();\r\n        } catch (error) {\r\n          log(`websocketStream can't close DUE to `, error);\r\n        }\r\n      });\r\n      // header ws 0rtt\r\n      const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader);\r\n      if (error) {\r\n        log(`earlyDataHeader has invaild base64`);\r\n        safeCloseWebSocket(ws);\r\n        return;\r\n      }\r\n      if (earlyData) {\r\n        controller.enqueue(earlyData);\r\n      }\r\n    },\r\n    pull(controller) {\r\n      // if ws can stop read if stream is full, we can implement backpressure\r\n      // https://streams.spec.whatwg.org/#example-rs-push-backpressure\r\n    },\r\n    cancel(reason) {\r\n      // TODO: log can be remove, if writestream has error, write stream will has log\r\n      log(`websocketStream is cancel DUE to `, reason);\r\n      if (readableStreamCancel) {\r\n        return;\r\n      }\r\n      readableStreamCancel = true;\r\n      safeCloseWebSocket(ws);\r\n    },\r\n  });\r\n}\r\n\r\nfunction base64ToArrayBuffer(base64Str: string) {\r\n  if (!base64Str) {\r\n    return { error: null };\r\n  }\r\n  try {\r\n    // go use modified Base64 for URL rfc4648 which js atob not support\r\n    base64Str = base64Str.replace(/-/g, '+').replace(/_/g, '/');\r\n    const decode = atob(base64Str);\r\n    const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0));\r\n    return { earlyData: arryBuffer.buffer, error: null };\r\n  } catch (error) {\r\n    return { error };\r\n  }\r\n}\r\n\r\nexport function safeCloseWebSocket(socket: WebSocket | any) {\r\n  try {\r\n    if (socket.readyState === socket.OPEN) {\r\n      socket.close();\r\n    }\r\n  } catch (error) {\r\n    console.error('safeCloseWebSocket error', error);\r\n  }\r\n}\r\n\r\n//https://github.com/v2ray/v2ray-core/issues/2636\r\n// 1 字节\t  16 字节       1 字节\t       M 字节\t              1 字节            2 字节      1 字节\t      S 字节\t      X 字节\r\n// 协议版本\t  等价 UUID\t  附加信息长度 M\t(附加信息 ProtoBuf)  指令(udp/tcp)\t    端口\t      地址类型      地址\t        请求数据\r\n// 00                   00                                  01                 01bb(443)   02(ip/host)\r\n// 1 字节\t              1 字节\t      N 字节\t         Y 字节\r\n// 协议版本，与请求的一致\t附加信息长度 N\t附加信息 ProtoBuf\t响应数据\r\nexport function processVlessHeader(\r\n  vlessBuffer: ArrayBuffer,\r\n  userID: string\r\n  // uuidLib: any,\r\n  // lodash: any\r\n) {\r\n  if (vlessBuffer.byteLength < 24) {\r\n    // console.log('invalid data');\r\n    // controller.error('invalid data');\r\n    return {\r\n      hasError: true,\r\n      message: 'invalid data',\r\n    };\r\n  }\r\n  const version = new Uint8Array(vlessBuffer.slice(0, 1));\r\n  let isValidUser = false;\r\n  let isUDP = false;\r\n  if (stringify(new Uint8Array(vlessBuffer.slice(1, 17))) === userID) {\r\n    isValidUser = true;\r\n  }\r\n  if (!isValidUser) {\r\n    // console.log('in valid user');\r\n    // controller.error('in valid user');\r\n    return {\r\n      hasError: true,\r\n      message: 'invalid user',\r\n    };\r\n  }\r\n\r\n  const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0];\r\n  //skip opt for now\r\n\r\n  const command = new Uint8Array(\r\n    vlessBuffer.slice(18 + optLength, 18 + optLength + 1)\r\n  )[0];\r\n\r\n  // 0x01 TCP\r\n  // 0x02 UDP\r\n  // 0x03 MUX\r\n  if (command === 1) {\r\n  } else if (command === 2) {\r\n    isUDP = true;\r\n  } else {\r\n    return {\r\n      hasError: true,\r\n      message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`,\r\n    };\r\n  }\r\n  const portIndex = 18 + optLength + 1;\r\n  const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2);\r\n  // port is big-Endian in raw data etc 80 == 0x005d\r\n  const portRemote = new DataView(portBuffer).getInt16(0);\r\n\r\n  let addressIndex = portIndex + 2;\r\n  const addressBuffer = new Uint8Array(\r\n    vlessBuffer.slice(addressIndex, addressIndex + 1)\r\n  );\r\n\r\n  // 1--> ipv4  addressLength =4\r\n  // 2--> domain name addressLength=addressBuffer[1]\r\n  // 3--> ipv6  addressLength =16\r\n  const addressType = addressBuffer[0];\r\n  let addressLength = 0;\r\n  let addressValueIndex = addressIndex + 1;\r\n  let addressValue = '';\r\n  switch (addressType) {\r\n    case 1:\r\n      addressLength = 4;\r\n      addressValue = new Uint8Array(\r\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\r\n      ).join('.');\r\n      break;\r\n    case 2:\r\n      addressLength = new Uint8Array(\r\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + 1)\r\n      )[0];\r\n      addressValueIndex += 1;\r\n      addressValue = new TextDecoder().decode(\r\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\r\n      );\r\n      break;\r\n    case 3:\r\n      addressLength = 16;\r\n      const dataView = new DataView(\r\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\r\n      );\r\n      // 2001:0db8:85a3:0000:0000:8a2e:0370:7334\r\n      const ipv6 = [];\r\n      for (let i = 0; i < 8; i++) {\r\n        ipv6.push(dataView.getUint16(i * 2).toString(16));\r\n      }\r\n      addressValue = ipv6.join(':');\r\n      // console.log('---------', addressValue)\r\n      // seems no need add [] for ipv6\r\n      // if (addressValue) {\r\n      //   addressValue = `[${addressValue}]`;\r\n      // }\r\n      break;\r\n    default:\r\n      console.log(`invild  addressType is ${addressType}`);\r\n  }\r\n  if (!addressValue) {\r\n    // console.log(`[${address}:${port}] addressValue is empty`);\r\n    // controller.error(`[${address}:${portWithRandomLog}] addressValue is empty`);\r\n    return {\r\n      hasError: true,\r\n      message: `addressValue is empty, addressType is ${addressType}`,\r\n    };\r\n  }\r\n\r\n  return {\r\n    hasError: false,\r\n    addressRemote: addressValue,\r\n    portRemote,\r\n    rawDataIndex: addressValueIndex + addressLength,\r\n    vlessVersion: version,\r\n    isUDP,\r\n  };\r\n}\r\n","module.exports = require(\"buffer\");","module.exports = require(\"crypto\");","module.exports = require(\"events\");","module.exports = require(\"http\");","module.exports = require(\"https\");","module.exports = require(\"net\");","module.exports = require(\"node:dgram\");","module.exports = require(\"node:dns\");","module.exports = require(\"node:fs\");","module.exports = require(\"node:net\");","module.exports = require(\"node:path\");","module.exports = require(\"node:stream/web\");","module.exports = require(\"stream\");","module.exports = require(\"tls\");","module.exports = require(\"url\");","module.exports = require(\"zlib\");","\"use strict\";\nvar __create = Object.create;\nvar __defProp = Object.defineProperty;\nvar __getOwnPropDesc = Object.getOwnPropertyDescriptor;\nvar __getOwnPropNames = Object.getOwnPropertyNames;\nvar __getProtoOf = Object.getPrototypeOf;\nvar __hasOwnProp = Object.prototype.hasOwnProperty;\nvar __export = (target, all) => {\n  for (var name in all)\n    __defProp(target, name, { get: all[name], enumerable: true });\n};\nvar __copyProps = (to, from, except, desc) => {\n  if (from && typeof from === \"object\" || typeof from === \"function\") {\n    for (let key of __getOwnPropNames(from))\n      if (!__hasOwnProp.call(to, key) && key !== except)\n        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });\n  }\n  return to;\n};\nvar __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(\n  isNodeMode || !mod || !mod.__esModule ? __defProp(target, \"default\", { value: mod, enumerable: true }) : target,\n  mod\n));\nvar __toCommonJS = (mod) => __copyProps(__defProp({}, \"__esModule\", { value: true }), mod);\n\n// src/index.ts\nvar src_exports = {};\n__export(src_exports, {\n  cacheHeader: () => cacheHeader\n});\nmodule.exports = __toCommonJS(src_exports);\n\n// src/cache-header.ts\nvar import_timestring = __toESM(require(\"timestring\"), 1);\nfunction cacheHeader(params) {\n  const transformed = Object.entries(params).reduce((acc, [key, value]) => {\n    const kebabKey = key.replace(/[A-Z]/g, (char) => \"-\" + char.toLowerCase());\n    return typeof value === \"string\" || value === true ? [...acc, value === true ? kebabKey : `${kebabKey}=${(0, import_timestring.default)(value)}`] : acc;\n  }, []);\n  return transformed.join(\", \");\n}\n// Annotate the CommonJS export names for ESM import in node:\n0 && (module.exports = {\n  cacheHeader\n});\n//# sourceMappingURL=index.cjs.map","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tvar cachedModule = __webpack_module_cache__[moduleId];\n\tif (cachedModule !== undefined) {\n\t\treturn cachedModule.exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = (module) => {\n\tvar getter = module && module.__esModule ?\n\t\t() => (module['default']) :\n\t\t() => (module);\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","// define getter functions for harmony exports\n__webpack_require__.d = (exports, definition) => {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))","// define __esModule on exports\n__webpack_require__.r = (exports) => {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","import { createServer } from 'http';\r\nimport { parse } from 'url';\r\nimport { WebSocketServer, WebSocket } from 'ws';\r\nimport { index401, serverStaticFile } from './app/utils';\r\nimport { validate } from 'uuid';\r\nimport { createReadStream } from 'node:fs';\r\nimport { setDefaultResultOrder } from 'node:dns';\r\nimport { createSocket, Socket as UDPSocket } from 'node:dgram';\r\n\r\nimport {\r\n  makeReadableWebSocketStream,\r\n  processVlessHeader,\r\n  delay,\r\n  closeWebSocket,\r\n} from 'vless-js';\r\nimport { connect, Socket } from 'node:net';\r\nimport { Duplex, Readable, Writable } from 'stream';\r\nimport {\r\n  TransformStream,\r\n  ReadableStream,\r\n  WritableStream,\r\n} from 'node:stream/web';\r\nconst port = process.env.PORT;\r\nconst userID = process.env.UUID || '';\r\n//'ipv4first' or 'verbatim'\r\nconst dnOder = process.env.DNSORDER || 'verbatim';\r\nif (dnOder === 'ipv4first') {\r\n  setDefaultResultOrder(dnOder);\r\n}\r\n\r\nlet isVaildUser = validate(userID);\r\nif (!isVaildUser) {\r\n  console.log('not set valid UUID');\r\n}\r\n\r\nconst server = createServer((req, resp) => {\r\n  if (!isVaildUser) {\r\n    return index401(req, resp);\r\n  }\r\n  const url = new URL(req.url, `http://${req.headers['host']}`);\r\n  // health check\r\n  if (req.method === 'GET' && url.pathname.startsWith('/health')) {\r\n    resp.writeHead(200);\r\n    resp.write('health 200');\r\n    resp.end();\r\n    return;\r\n  }\r\n\r\n  // index page\r\n  if (url.pathname.includes(userID)) {\r\n    const index = 'dist/apps/cf-page/index.html';\r\n    resp.writeHead(200, {\r\n      'Content-Type': 'text/html,charset=UTF-8',\r\n    });\r\n    return createReadStream(index).pipe(resp);\r\n  }\r\n  if (req.method === 'GET' && url.pathname.startsWith('/assets')) {\r\n    return serverStaticFile(req, resp);\r\n  }\r\n\r\n  const basicAuth = req.headers.authorization || '';\r\n  const authStringBase64 = basicAuth.split(' ')?.[1] || '';\r\n  const authString = Buffer.from(authStringBase64, 'base64').toString('ascii');\r\n  if (authString && authString.includes(userID)) {\r\n    resp.writeHead(302, {\r\n      'content-type': 'text/html; charset=utf-8',\r\n      Location: `./${userID}`,\r\n    });\r\n    resp.end();\r\n  } else {\r\n    resp.writeHead(401, {\r\n      'content-type': 'text/html; charset=utf-8',\r\n      'WWW-Authenticate': 'Basic',\r\n    });\r\n    resp.end();\r\n  }\r\n});\r\nconst vlessWServer = new WebSocketServer({ noServer: true });\r\n\r\nvlessWServer.on('connection', async function connection(ws, request) {\r\n  let address = '';\r\n  let portWithRandomLog = '';\r\n  try {\r\n    const log = (info: string, event?: any) => {\r\n      console.log(`[${address}:${portWithRandomLog}] ${info}`, event || '');\r\n    };\r\n    let remoteConnection: Duplex = null;\r\n    let udpClientStream: TransformStream = null;\r\n    let remoteConnectionReadyResolve: Function;\r\n    const earlyDataHeader = request.headers['sec-websocket-protocol'];\r\n    const readableWebSocketStream = makeReadableWebSocketStream(\r\n      ws,\r\n      earlyDataHeader,\r\n      log\r\n    );\r\n    let vlessResponseHeader: Uint8Array | null = null;\r\n\r\n    // ws  --> remote\r\n    readableWebSocketStream\r\n      .pipeTo(\r\n        new WritableStream({\r\n          async write(chunk: Buffer, controller) {\r\n            if (!Buffer.isBuffer(chunk)) {\r\n              chunk = Buffer.from(chunk);\r\n            }\r\n            if (udpClientStream) {\r\n              const writer = udpClientStream.writable.getWriter();\r\n              // nodejs buffer to ArrayBuffer issue\r\n              // https://nodejs.org/dist/latest-v18.x/docs/api/buffer.html#bufbuffer\r\n              await writer.write(\r\n                chunk.buffer.slice(\r\n                  chunk.byteOffset,\r\n                  chunk.byteOffset + chunk.length\r\n                )\r\n              );\r\n              writer.releaseLock();\r\n              return;\r\n            }\r\n            if (remoteConnection) {\r\n              await socketAsyncWrite(remoteConnection, chunk);\r\n              // remoteConnection.write(chunk);\r\n              return;\r\n            }\r\n            const vlessBuffer = chunk.buffer.slice(\r\n              chunk.byteOffset,\r\n              chunk.byteOffset + chunk.length\r\n            );\r\n            const {\r\n              hasError,\r\n              message,\r\n              portRemote,\r\n              addressRemote,\r\n              rawDataIndex,\r\n              vlessVersion,\r\n              isUDP,\r\n            } = processVlessHeader(vlessBuffer, userID);\r\n            address = addressRemote || '';\r\n            portWithRandomLog = `${portRemote}--${Math.random()} ${\r\n              isUDP ? 'udp ' : 'tcp '\r\n            } `;\r\n            if (hasError) {\r\n              controller.error(`[${address}:${portWithRandomLog}] ${message} `);\r\n            }\r\n            // const addressType = requestAddr >> 42\r\n            // const addressLength = requestAddr & 0x0f;\r\n            console.log(`[${address}:${portWithRandomLog}] connecting`);\r\n            vlessResponseHeader = new Uint8Array([vlessVersion![0], 0]);\r\n            const rawClientData = vlessBuffer.slice(rawDataIndex!);\r\n            if (isUDP) {\r\n              udpClientStream = makeUDPSocketStream(portRemote, address);\r\n              const writer = udpClientStream.writable.getWriter();\r\n              writer.write(rawClientData).catch((error) => console.log);\r\n              writer.releaseLock();\r\n              remoteConnectionReadyResolve(udpClientStream);\r\n            } else {\r\n              remoteConnection = await connect2Remote(portRemote, address, log);\r\n              remoteConnection.write(new Uint8Array(rawClientData));\r\n              remoteConnectionReadyResolve(remoteConnection);\r\n            }\r\n          },\r\n          close() {\r\n            // if (udpClientStream ) {\r\n            //   udpClientStream.writable.close();\r\n            // }\r\n            // (remoteConnection as Socket).end();\r\n            console.log(\r\n              `[${address}:${portWithRandomLog}] readableWebSocketStream is close`\r\n            );\r\n          },\r\n          abort(reason) {\r\n            // TODO: log can be remove, abort will catch by catch block\r\n            console.log(\r\n              `[${address}:${portWithRandomLog}] readableWebSocketStream is abort`,\r\n              JSON.stringify(reason)\r\n            );\r\n          },\r\n        })\r\n      )\r\n      .catch((error) => {\r\n        console.error(\r\n          `[${address}:${portWithRandomLog}] readableWebSocketStream pipeto has exception`,\r\n          error.stack || error\r\n        );\r\n        // error is cancel readable stream anyway, no need close websocket in here\r\n        // closeWebSocket(webSocket);\r\n        // close remote conn\r\n        // remoteConnection?.close();\r\n      });\r\n\r\n    await new Promise((resolve) => (remoteConnectionReadyResolve = resolve));\r\n    // remote --> ws\r\n    let responseStream = udpClientStream?.readable;\r\n    if (remoteConnection) {\r\n      // ignore type error\r\n      // @ts-ignore\r\n      responseStream = Readable.toWeb(remoteConnection, {\r\n        strategy: {\r\n          // due to nodejs issue https://github.com/nodejs/node/issues/46347\r\n          highWaterMark: 1000, // 1000 * tcp mtu(64kb) = 64mb\r\n        },\r\n      });\r\n    }\r\n    let count = 0;\r\n\r\n    // ws.send(vlessResponseHeader!);\r\n    // remoteConnection.pipe(\r\n    //   new Writable({\r\n    //     async write(chunk: Uint8Array, encoding, callback) {\r\n    //       count += chunk.byteLength;\r\n    //       console.log('ws write', count / (1024 * 1024));\r\n    //       console.log(\r\n    //         '-----++++',\r\n    //         (remoteConnection as Socket).bytesRead / (1024 * 1024)\r\n    //       );\r\n    //       if (ws.readyState === ws.OPEN) {\r\n    //         await wsAsyncWrite(ws, chunk);\r\n    //         callback();\r\n    //       }\r\n    //     },\r\n    //   })\r\n    // );\r\n    // if readable not pipe can't wait fro writeable write method\r\n    await responseStream.pipeTo(\r\n      new WritableStream({\r\n        start() {\r\n          if (ws.readyState === ws.OPEN) {\r\n            ws.send(vlessResponseHeader!);\r\n          }\r\n        },\r\n        async write(chunk: Uint8Array, controller) {\r\n          // count += chunk.byteLength;\r\n          // console.log('ws write', count / (1024 * 1024));\r\n          // console.log(\r\n          //   '-----++++',\r\n          //   (remoteConnection as Socket).bytesRead / (1024 * 1024),\r\n          //   (remoteConnection as Socket).readableHighWaterMark\r\n          // );\r\n          // we have issue there, maybe beacsue nodejs web stream has bug.\r\n          // socket web stream will read more data from socket\r\n          if (ws.readyState === ws.OPEN) {\r\n            await wsAsyncWrite(ws, chunk);\r\n          } else {\r\n            if (!(remoteConnection as Socket).destroyed) {\r\n              (remoteConnection as Socket).destroy();\r\n            }\r\n          }\r\n        },\r\n        close() {\r\n          console.log(\r\n            `[${address}:${portWithRandomLog}] remoteConnection!.readable is close`\r\n          );\r\n        },\r\n        abort(reason) {\r\n          closeWebSocket(ws);\r\n          console.error(\r\n            `[${address}:${portWithRandomLog}] remoteConnection!.readable abort`,\r\n            reason\r\n          );\r\n        },\r\n      })\r\n    );\r\n  } catch (error) {\r\n    console.error(\r\n      `[${address}:${portWithRandomLog}] processWebSocket has exception `,\r\n      error.stack || error\r\n    );\r\n    closeWebSocket(ws);\r\n  }\r\n});\r\n\r\nserver.on('upgrade', function upgrade(request, socket, head) {\r\n  const { pathname } = parse(request.url);\r\n\r\n  vlessWServer.handleUpgrade(request, socket, head, function done(ws) {\r\n    vlessWServer.emit('connection', ws, request);\r\n  });\r\n});\r\n\r\nserver.listen(\r\n  {\r\n    port: port,\r\n    host: '0.0.0.0',\r\n  },\r\n  () => {\r\n    console.log(`server listen in http://127.0.0.1:${port}`);\r\n  }\r\n);\r\n\r\nasync function connect2Remote(port, host, log: Function): Promise<Socket> {\r\n  return new Promise((resole, reject) => {\r\n    const remoteSocket = connect(\r\n      {\r\n        port: port,\r\n        host: host,\r\n        // https://github.com/nodejs/node/pull/46587\r\n        // autoSelectFamily: true,\r\n      },\r\n      () => {\r\n        log(`connected`);\r\n        resole(remoteSocket);\r\n      }\r\n    );\r\n    remoteSocket.addListener('error', () => {\r\n      reject('remoteSocket has error');\r\n    });\r\n  });\r\n}\r\n\r\nasync function socketAsyncWrite(ws: Duplex, chunk: Buffer) {\r\n  return new Promise((resolve, reject) => {\r\n    ws.write(chunk, (error) => {\r\n      if (error) {\r\n        reject(error);\r\n      } else {\r\n        resolve('');\r\n      }\r\n    });\r\n  });\r\n}\r\n\r\nasync function wsAsyncWrite(ws: WebSocket, chunk: Uint8Array) {\r\n  return new Promise((resolve, reject) => {\r\n    ws.send(chunk, (error) => {\r\n      if (error) {\r\n        reject(error);\r\n      } else {\r\n        resolve('');\r\n      }\r\n    });\r\n  });\r\n}\r\n\r\nfunction makeUDPSocketStream(portRemote, address) {\r\n  const udpClient = createSocket('udp4');\r\n  const transformStream = new TransformStream({\r\n    start(controller) {\r\n      /* … */\r\n      udpClient.on('message', (message, info) => {\r\n        controller.enqueue(\r\n          Buffer.concat([new Uint8Array([0, info.size]), message])\r\n        );\r\n      });\r\n      udpClient.on('error', (error) => {\r\n        console.log('udpClient error event', error);\r\n        controller.error(error);\r\n      });\r\n    },\r\n\r\n    async transform(chunk: ArrayBuffer, controller) {\r\n      //seems v2ray will use same web socket for dns query..\r\n      //And v2ray will combine A record and AAAA record into one ws message and use 2 btye for dns query length\r\n      for (let index = 0; index < chunk.byteLength; ) {\r\n        const lengthBuffer = chunk.slice(index, index + 2);\r\n        const udpPakcetLength = new DataView(lengthBuffer).getInt16(0);\r\n        const udpData = new Uint8Array(\r\n          chunk.slice(index + 2, index + 2 + udpPakcetLength)\r\n        );\r\n        index = index + 2 + udpPakcetLength;\r\n        await new Promise((resolve, reject) => {\r\n          udpClient.send(udpData, portRemote, address, (err) => {\r\n            if (err) {\r\n              console.log('udps send error', err);\r\n              controller.error(`Failed to send UDP packet !! ${err}`);\r\n              safeCloseUDP(udpClient);\r\n            }\r\n            resolve(true);\r\n          });\r\n        });\r\n        index = index;\r\n      }\r\n\r\n      // console.log('dns chunk', chunk);\r\n      // console.log(portRemote, address);\r\n      // port is big-Endian in raw data etc 80 == 0x005d\r\n    },\r\n\r\n    flush(controller) {\r\n      safeCloseUDP(udpClient);\r\n      controller.terminate();\r\n    },\r\n  });\r\n  return transformStream;\r\n}\r\n\r\nfunction safeCloseUDP(client: UDPSocket) {\r\n  try {\r\n    client.close();\r\n  } catch (error) {\r\n    console.log('error close udp', error);\r\n  }\r\n}\r\n"],"names":[],"sourceRoot":""}
\ No newline at end of file
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parseTimestring (string, returnUnit, opts) {\n  opts = Object.assign({}, DEFAULT_OPTS, opts || {})\n\n  let totalSeconds = 0\n  let unitValues = getUnitValues(opts)\n  let groups = string\n    .toLowerCase()\n    .replace(/[^.\\w+-]+/g, '')\n    .match(/[-+]?[0-9.]+[a-z]+/g)\n\n  if (groups === null) {\n    throw new Error(`The string [${string}] could not be parsed by timestring`)\n  }\n\n  groups.forEach(group => {\n    let value = group.match(/[0-9.]+/g)[0]\n    let unit = group.match(/[a-z]+/g)[0]\n\n    totalSeconds += getSeconds(value, unit, unitValues)\n  })\n\n  if (returnUnit) {\n    return convert(totalSeconds, returnUnit, unitValues)\n  }\n\n  return totalSeconds\n}\n\n/**\n * Get unit values based on the passed options\n *\n * @param   {Object} opts\n * @returns {Object}\n */\n\nfunction getUnitValues (opts) {\n  let unitValues = {\n    ms: 0.001,\n    s: 1,\n    m: 60,\n    h: 3600\n  }\n\n  unitValues.d = opts.hoursPerDay * unitValues.h\n  unitValues.w = opts.daysPerWeek 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unitValues) {\n  return value / unitValues[getUnitKey(unit)]\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n    extendStatics = Object.setPrototypeOf ||\r\n        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    if (typeof b !== \"function\" && b !== null)\r\n        throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    }\r\n    return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n    function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n    var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n    var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n    var _, done = false;\r\n    for (var i = decorators.length - 1; i >= 0; i--) {\r\n        var context = {};\r\n        for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n        for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n        context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n        var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n        if (kind === \"accessor\") {\r\n            if (result === void 0) continue;\r\n            if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n            if (_ = accept(result.get)) descriptor.get = _;\r\n            if (_ = accept(result.set)) descriptor.set = _;\r\n            if (_ = accept(result.init)) initializers.push(_);\r\n        }\r\n        else if (_ = accept(result)) {\r\n            if (kind === \"field\") initializers.push(_);\r\n            else descriptor[key] = _;\r\n        }\r\n    }\r\n    if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n    done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n    var useValue = arguments.length > 2;\r\n    for (var i = 0; i < initializers.length; i++) {\r\n        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n    }\r\n    return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n    return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n    if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n    return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    var desc = Object.getOwnPropertyDescriptor(m, k);\r\n    if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n        desc = { enumerable: true, get: function() { return m[k]; } };\r\n    }\r\n    Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n    for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n        if (ar || !(i in from)) {\r\n            if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n            ar[i] = from[i];\r\n        }\r\n    }\r\n    return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n    o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n    __setModuleDefault(result, mod);\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n    return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n    if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n    return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n    if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n    return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n","import crypto from 'crypto';\nconst rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate\n\nlet poolPtr = rnds8Pool.length;\nexport default function rng() {\n  if (poolPtr > rnds8Pool.length - 16) {\n    crypto.randomFillSync(rnds8Pool);\n    poolPtr = 0;\n  }\n\n  return rnds8Pool.slice(poolPtr, poolPtr += 16);\n}","export default /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;","import REGEX from './regex.js';\n\nfunction validate(uuid) {\n  return typeof uuid === 'string' && REGEX.test(uuid);\n}\n\nexport default validate;","import validate from './validate.js';\n/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\n\nconst byteToHex = [];\n\nfor (let i = 0; i < 256; ++i) {\n  byteToHex.push((i + 0x100).toString(16).slice(1));\n}\n\nexport function unsafeStringify(arr, offset = 0) {\n  // Note: Be careful editing this code!  It's been tuned for performance\n  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434\n  return (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase();\n}\n\nfunction stringify(arr, offset = 0) {\n  const uuid = unsafeStringify(arr, offset); // Consistency check for valid UUID.  If this throws, it's likely due to one\n  // of the following:\n  // - One or more input array values don't map to a hex octet (leading to\n  // \"undefined\" in the uuid)\n  // - Invalid input values for the RFC `version` or `variant` fields\n\n  if (!validate(uuid)) {\n    throw TypeError('Stringified UUID is invalid');\n  }\n\n  return uuid;\n}\n\nexport default stringify;","import rng from './rng.js';\nimport { unsafeStringify } from './stringify.js'; // **`v1()` - Generate time-based UUID**\n//\n// Inspired by https://github.com/LiosK/UUID.js\n// and http://docs.python.org/library/uuid.html\n\nlet _nodeId;\n\nlet _clockseq; // Previous uuid creation time\n\n\nlet _lastMSecs = 0;\nlet _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details\n\nfunction v1(options, buf, offset) {\n  let i = buf && offset || 0;\n  const b = buf || new Array(16);\n  options = options || {};\n  let node = options.node || _nodeId;\n  let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not\n  // specified.  We do this lazily to minimize issues related to insufficient\n  // system entropy.  See #189\n\n  if (node == null || clockseq == null) {\n    const seedBytes = options.random || (options.rng || rng)();\n\n    if (node == null) {\n      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)\n      node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];\n    }\n\n    if (clockseq == null) {\n      // Per 4.2.2, randomize (14 bit) clockseq\n      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;\n    }\n  } // UUID timestamps are 100 nano-second units since the Gregorian epoch,\n  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so\n  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'\n  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.\n\n\n  let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock\n  // cycle to simulate higher resolution clock\n\n  let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)\n\n  const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression\n\n  if (dt < 0 && options.clockseq === undefined) {\n    clockseq = clockseq + 1 & 0x3fff;\n  } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new\n  // time interval\n\n\n  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {\n    nsecs = 0;\n  } // Per 4.2.1.2 Throw error if too many uuids are requested\n\n\n  if (nsecs >= 10000) {\n    throw new Error(\"uuid.v1(): Can't create more than 10M uuids/sec\");\n  }\n\n  _lastMSecs = msecs;\n  _lastNSecs = nsecs;\n  _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch\n\n  msecs += 12219292800000; // `time_low`\n\n  const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;\n  b[i++] = tl >>> 24 & 0xff;\n  b[i++] = tl >>> 16 & 0xff;\n  b[i++] = tl >>> 8 & 0xff;\n  b[i++] = tl & 0xff; // `time_mid`\n\n  const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;\n  b[i++] = tmh >>> 8 & 0xff;\n  b[i++] = tmh & 0xff; // `time_high_and_version`\n\n  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version\n\n  b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)\n\n  b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`\n\n  b[i++] = clockseq & 0xff; // `node`\n\n  for (let n = 0; n < 6; ++n) {\n    b[i + n] = node[n];\n  }\n\n  return buf || unsafeStringify(b);\n}\n\nexport default v1;","import validate from './validate.js';\n\nfunction parse(uuid) {\n  if (!validate(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  let v;\n  const arr = new Uint8Array(16); // Parse ########-....-....-....-............\n\n  arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;\n  arr[1] = v >>> 16 & 0xff;\n  arr[2] = v >>> 8 & 0xff;\n  arr[3] = v & 0xff; // Parse ........-####-....-....-............\n\n  arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;\n  arr[5] = v & 0xff; // Parse ........-....-####-....-............\n\n  arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;\n  arr[7] = v & 0xff; // Parse ........-....-....-####-............\n\n  arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;\n  arr[9] = v & 0xff; // Parse ........-....-....-....-############\n  // (Use \"/\" to avoid 32-bit truncation when bit-shifting high-order bytes)\n\n  arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;\n  arr[11] = v / 0x100000000 & 0xff;\n  arr[12] = v >>> 24 & 0xff;\n  arr[13] = v >>> 16 & 0xff;\n  arr[14] = v >>> 8 & 0xff;\n  arr[15] = v & 0xff;\n  return arr;\n}\n\nexport default parse;","import { unsafeStringify } from './stringify.js';\nimport parse from './parse.js';\n\nfunction stringToBytes(str) {\n  str = unescape(encodeURIComponent(str)); // UTF8 escape\n\n  const bytes = [];\n\n  for (let i = 0; i < str.length; ++i) {\n    bytes.push(str.charCodeAt(i));\n  }\n\n  return bytes;\n}\n\nexport const DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';\nexport const URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';\nexport default function v35(name, version, hashfunc) {\n  function generateUUID(value, namespace, buf, offset) {\n    var _namespace;\n\n    if (typeof value === 'string') {\n      value = stringToBytes(value);\n    }\n\n    if (typeof namespace === 'string') {\n      namespace = parse(namespace);\n    }\n\n    if (((_namespace = namespace) === null || _namespace === void 0 ? void 0 : _namespace.length) !== 16) {\n      throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');\n    } // Compute hash of namespace and value, Per 4.3\n    // Future: Use spread syntax when supported on all platforms, e.g. `bytes =\n    // hashfunc([...namespace, ... value])`\n\n\n    let bytes = new Uint8Array(16 + value.length);\n    bytes.set(namespace);\n    bytes.set(value, namespace.length);\n    bytes = hashfunc(bytes);\n    bytes[6] = bytes[6] & 0x0f | version;\n    bytes[8] = bytes[8] & 0x3f | 0x80;\n\n    if (buf) {\n      offset = offset || 0;\n\n      for (let i = 0; i < 16; ++i) {\n        buf[offset + i] = bytes[i];\n      }\n\n      return buf;\n    }\n\n    return unsafeStringify(bytes);\n  } // Function#name is not settable on some platforms (#270)\n\n\n  try {\n    generateUUID.name = name; // eslint-disable-next-line no-empty\n  } catch (err) {} // For CommonJS default export support\n\n\n  generateUUID.DNS = DNS;\n  generateUUID.URL = URL;\n  return generateUUID;\n}","import crypto from 'crypto';\n\nfunction md5(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return crypto.createHash('md5').update(bytes).digest();\n}\n\nexport default md5;","import v35 from './v35.js';\nimport md5 from './md5.js';\nconst v3 = v35('v3', 0x30, md5);\nexport default v3;","import crypto from 'crypto';\nexport default {\n  randomUUID: crypto.randomUUID\n};","import native from './native.js';\nimport rng from './rng.js';\nimport { unsafeStringify } from './stringify.js';\n\nfunction v4(options, buf, offset) {\n  if (native.randomUUID && !buf && !options) {\n    return native.randomUUID();\n  }\n\n  options = options || {};\n  const rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n\n  rnds[6] = rnds[6] & 0x0f | 0x40;\n  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided\n\n  if (buf) {\n    offset = offset || 0;\n\n    for (let i = 0; i < 16; ++i) {\n      buf[offset + i] = rnds[i];\n    }\n\n    return buf;\n  }\n\n  return unsafeStringify(rnds);\n}\n\nexport default v4;","import crypto from 'crypto';\n\nfunction sha1(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return crypto.createHash('sha1').update(bytes).digest();\n}\n\nexport default sha1;","import v35 from './v35.js';\nimport sha1 from './sha1.js';\nconst v5 = v35('v5', 0x50, sha1);\nexport default v5;","export default '00000000-0000-0000-0000-000000000000';","import validate from './validate.js';\n\nfunction version(uuid) {\n  if (!validate(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  return parseInt(uuid.slice(14, 15), 16);\n}\n\nexport default version;","export { default as v1 } from './v1.js';\nexport { default as v3 } from './v3.js';\nexport { default as v4 } from './v4.js';\nexport { default as v5 } from './v5.js';\nexport { default as NIL } from './nil.js';\nexport { default as version } from './version.js';\nexport { default as validate } from './validate.js';\nexport { default as stringify } from './stringify.js';\nexport { default as parse } from './parse.js';","'use strict';\n\nconst WebSocket = require('./lib/websocket');\n\nWebSocket.createWebSocketStream = require('./lib/stream');\nWebSocket.Server = require('./lib/websocket-server');\nWebSocket.Receiver = require('./lib/receiver');\nWebSocket.Sender = require('./lib/sender');\n\nWebSocket.WebSocket = WebSocket;\nWebSocket.WebSocketServer = WebSocket.Server;\n\nmodule.exports = WebSocket;\n","'use strict';\n\nconst { EMPTY_BUFFER } = require('./constants');\n\nconst FastBuffer = Buffer[Symbol.species];\n\n/**\n * Merges an array of buffers into a new buffer.\n *\n * @param {Buffer[]} list The array of buffers to concat\n * @param {Number} totalLength The total length of buffers in the list\n * @return {Buffer} The resulting buffer\n * @public\n */\nfunction concat(list, totalLength) {\n  if (list.length === 0) return EMPTY_BUFFER;\n  if (list.length === 1) return list[0];\n\n  const target = Buffer.allocUnsafe(totalLength);\n  let offset = 0;\n\n  for (let i = 0; i < list.length; i++) {\n    const buf = list[i];\n    target.set(buf, offset);\n    offset += buf.length;\n  }\n\n  if (offset < totalLength) {\n    return new FastBuffer(target.buffer, target.byteOffset, offset);\n  }\n\n  return target;\n}\n\n/**\n * Masks a buffer using the given mask.\n *\n * @param {Buffer} source The buffer to mask\n * @param {Buffer} mask The mask to use\n * @param {Buffer} output The buffer where to store the result\n * @param {Number} offset The offset at which to start writing\n * @param {Number} length The number of bytes to mask.\n * @public\n */\nfunction _mask(source, mask, output, offset, length) {\n  for (let i = 0; i < length; i++) {\n    output[offset + i] = source[i] ^ mask[i & 3];\n  }\n}\n\n/**\n * Unmasks a buffer using the given mask.\n *\n * @param {Buffer} buffer The buffer to unmask\n * @param {Buffer} mask The mask to use\n * @public\n */\nfunction _unmask(buffer, mask) {\n  for (let i = 0; i < buffer.length; i++) {\n    buffer[i] ^= mask[i & 3];\n  }\n}\n\n/**\n * Converts a buffer to an `ArrayBuffer`.\n *\n * @param {Buffer} buf The buffer to convert\n * @return {ArrayBuffer} Converted buffer\n * @public\n */\nfunction toArrayBuffer(buf) {\n  if (buf.length === buf.buffer.byteLength) {\n    return buf.buffer;\n  }\n\n  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.length);\n}\n\n/**\n * Converts `data` to a `Buffer`.\n *\n * @param {*} data The data to convert\n * @return {Buffer} The buffer\n * @throws {TypeError}\n * @public\n */\nfunction toBuffer(data) {\n  toBuffer.readOnly = true;\n\n  if (Buffer.isBuffer(data)) return data;\n\n  let buf;\n\n  if (data instanceof ArrayBuffer) {\n    buf = new FastBuffer(data);\n  } else if (ArrayBuffer.isView(data)) {\n    buf = new FastBuffer(data.buffer, data.byteOffset, data.byteLength);\n  } else {\n    buf = Buffer.from(data);\n    toBuffer.readOnly = false;\n  }\n\n  return buf;\n}\n\nmodule.exports = {\n  concat,\n  mask: _mask,\n  toArrayBuffer,\n  toBuffer,\n  unmask: _unmask\n};\n\n/* istanbul ignore else  */\nif (!process.env.WS_NO_BUFFER_UTIL) {\n  try {\n    const bufferUtil = require('bufferutil');\n\n    module.exports.mask = function (source, mask, output, offset, length) {\n      if (length < 48) _mask(source, mask, output, offset, length);\n      else bufferUtil.mask(source, mask, output, offset, length);\n    };\n\n    module.exports.unmask = function (buffer, mask) {\n      if (buffer.length < 32) _unmask(buffer, mask);\n      else bufferUtil.unmask(buffer, mask);\n    };\n  } catch (e) {\n    // Continue regardless of the error.\n  }\n}\n","'use strict';\n\nmodule.exports = {\n  BINARY_TYPES: ['nodebuffer', 'arraybuffer', 'fragments'],\n  EMPTY_BUFFER: Buffer.alloc(0),\n  GUID: '258EAFA5-E914-47DA-95CA-C5AB0DC85B11',\n  kForOnEventAttribute: Symbol('kIsForOnEventAttribute'),\n  kListener: Symbol('kListener'),\n  kStatusCode: Symbol('status-code'),\n  kWebSocket: Symbol('websocket'),\n  NOOP: () => {}\n};\n","'use strict';\n\nconst { kForOnEventAttribute, kListener } = require('./constants');\n\nconst kCode = Symbol('kCode');\nconst kData = Symbol('kData');\nconst kError = Symbol('kError');\nconst kMessage = Symbol('kMessage');\nconst kReason = Symbol('kReason');\nconst kTarget = Symbol('kTarget');\nconst kType = Symbol('kType');\nconst kWasClean = Symbol('kWasClean');\n\n/**\n * Class representing an event.\n */\nclass Event {\n  /**\n   * Create a new `Event`.\n   *\n   * @param {String} type The name of the event\n   * @throws {TypeError} If the `type` argument is not specified\n   */\n  constructor(type) {\n    this[kTarget] = null;\n    this[kType] = type;\n  }\n\n  /**\n   * @type {*}\n   */\n  get target() {\n    return this[kTarget];\n  }\n\n  /**\n   * @type {String}\n   */\n  get type() {\n    return this[kType];\n  }\n}\n\nObject.defineProperty(Event.prototype, 'target', { enumerable: true });\nObject.defineProperty(Event.prototype, 'type', { enumerable: true });\n\n/**\n * Class representing a close event.\n *\n * @extends Event\n */\nclass CloseEvent extends Event {\n  /**\n   * Create a new `CloseEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {Number} [options.code=0] The status code explaining why the\n   *     connection was closed\n   * @param {String} [options.reason=''] A human-readable string explaining why\n   *     the connection was closed\n   * @param {Boolean} [options.wasClean=false] Indicates whether or not the\n   *     connection was cleanly closed\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kCode] = options.code === undefined ? 0 : options.code;\n    this[kReason] = options.reason === undefined ? '' : options.reason;\n    this[kWasClean] = options.wasClean === undefined ? false : options.wasClean;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get code() {\n    return this[kCode];\n  }\n\n  /**\n   * @type {String}\n   */\n  get reason() {\n    return this[kReason];\n  }\n\n  /**\n   * @type {Boolean}\n   */\n  get wasClean() {\n    return this[kWasClean];\n  }\n}\n\nObject.defineProperty(CloseEvent.prototype, 'code', { enumerable: true });\nObject.defineProperty(CloseEvent.prototype, 'reason', { enumerable: true });\nObject.defineProperty(CloseEvent.prototype, 'wasClean', { enumerable: true });\n\n/**\n * Class representing an error event.\n *\n * @extends Event\n */\nclass ErrorEvent extends Event {\n  /**\n   * Create a new `ErrorEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {*} [options.error=null] The error that generated this event\n   * @param {String} [options.message=''] The error message\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kError] = options.error === undefined ? null : options.error;\n    this[kMessage] = options.message === undefined ? '' : options.message;\n  }\n\n  /**\n   * @type {*}\n   */\n  get error() {\n    return this[kError];\n  }\n\n  /**\n   * @type {String}\n   */\n  get message() {\n    return this[kMessage];\n  }\n}\n\nObject.defineProperty(ErrorEvent.prototype, 'error', { enumerable: true });\nObject.defineProperty(ErrorEvent.prototype, 'message', { enumerable: true });\n\n/**\n * Class representing a message event.\n *\n * @extends Event\n */\nclass MessageEvent extends Event {\n  /**\n   * Create a new `MessageEvent`.\n   *\n   * @param {String} type The name of the event\n   * @param {Object} [options] A dictionary object that allows for setting\n   *     attributes via object members of the same name\n   * @param {*} [options.data=null] The message content\n   */\n  constructor(type, options = {}) {\n    super(type);\n\n    this[kData] = options.data === undefined ? null : options.data;\n  }\n\n  /**\n   * @type {*}\n   */\n  get data() {\n    return this[kData];\n  }\n}\n\nObject.defineProperty(MessageEvent.prototype, 'data', { enumerable: true });\n\n/**\n * This provides methods for emulating the `EventTarget` interface. It's not\n * meant to be used directly.\n *\n * @mixin\n */\nconst EventTarget = {\n  /**\n   * Register an event listener.\n   *\n   * @param {String} type A string representing the event type to listen for\n   * @param {(Function|Object)} handler The listener to add\n   * @param {Object} [options] An options object specifies characteristics about\n   *     the event listener\n   * @param {Boolean} [options.once=false] A `Boolean` indicating that the\n   *     listener should be invoked at most once after being added. If `true`,\n   *     the listener would be automatically removed when invoked.\n   * @public\n   */\n  addEventListener(type, handler, options = {}) {\n    for (const listener of this.listeners(type)) {\n      if (\n        !options[kForOnEventAttribute] &&\n        listener[kListener] === handler &&\n        !listener[kForOnEventAttribute]\n      ) {\n        return;\n      }\n    }\n\n    let wrapper;\n\n    if (type === 'message') {\n      wrapper = function onMessage(data, isBinary) {\n        const event = new MessageEvent('message', {\n          data: isBinary ? data : data.toString()\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'close') {\n      wrapper = function onClose(code, message) {\n        const event = new CloseEvent('close', {\n          code,\n          reason: message.toString(),\n          wasClean: this._closeFrameReceived && this._closeFrameSent\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'error') {\n      wrapper = function onError(error) {\n        const event = new ErrorEvent('error', {\n          error,\n          message: error.message\n        });\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else if (type === 'open') {\n      wrapper = function onOpen() {\n        const event = new Event('open');\n\n        event[kTarget] = this;\n        callListener(handler, this, event);\n      };\n    } else {\n      return;\n    }\n\n    wrapper[kForOnEventAttribute] = !!options[kForOnEventAttribute];\n    wrapper[kListener] = handler;\n\n    if (options.once) {\n      this.once(type, wrapper);\n    } else {\n      this.on(type, wrapper);\n    }\n  },\n\n  /**\n   * Remove an event listener.\n   *\n   * @param {String} type A string representing the event type to remove\n   * @param {(Function|Object)} handler The listener to remove\n   * @public\n   */\n  removeEventListener(type, handler) {\n    for (const listener of this.listeners(type)) {\n      if (listener[kListener] === handler && !listener[kForOnEventAttribute]) {\n        this.removeListener(type, listener);\n        break;\n      }\n    }\n  }\n};\n\nmodule.exports = {\n  CloseEvent,\n  ErrorEvent,\n  Event,\n  EventTarget,\n  MessageEvent\n};\n\n/**\n * Call an event listener\n *\n * @param {(Function|Object)} listener The listener to call\n * @param {*} thisArg The value to use as `this`` when calling the listener\n * @param {Event} event The event to pass to the listener\n * @private\n */\nfunction callListener(listener, thisArg, event) {\n  if (typeof listener === 'object' && listener.handleEvent) {\n    listener.handleEvent.call(listener, event);\n  } else {\n    listener.call(thisArg, event);\n  }\n}\n","'use strict';\n\nconst { tokenChars } = require('./validation');\n\n/**\n * Adds an offer to the map of extension offers or a parameter to the map of\n * parameters.\n *\n * @param {Object} dest The map of extension offers or parameters\n * @param {String} name The extension or parameter name\n * @param {(Object|Boolean|String)} elem The extension parameters or the\n *     parameter value\n * @private\n */\nfunction push(dest, name, elem) {\n  if (dest[name] === undefined) dest[name] = [elem];\n  else dest[name].push(elem);\n}\n\n/**\n * Parses the `Sec-WebSocket-Extensions` header into an object.\n *\n * @param {String} header The field value of the header\n * @return {Object} The parsed object\n * @public\n */\nfunction parse(header) {\n  const offers = Object.create(null);\n  let params = Object.create(null);\n  let mustUnescape = false;\n  let isEscaping = false;\n  let inQuotes = false;\n  let extensionName;\n  let paramName;\n  let start = -1;\n  let code = -1;\n  let end = -1;\n  let i = 0;\n\n  for (; i < header.length; i++) {\n    code = header.charCodeAt(i);\n\n    if (extensionName === undefined) {\n      if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (\n        i !== 0 &&\n        (code === 0x20 /* ' ' */ || code === 0x09) /* '\\t' */\n      ) {\n        if (end === -1 && start !== -1) end = i;\n      } else if (code === 0x3b /* ';' */ || code === 0x2c /* ',' */) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        const name = header.slice(start, end);\n        if (code === 0x2c) {\n          push(offers, name, params);\n          params = Object.create(null);\n        } else {\n          extensionName = name;\n        }\n\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    } else if (paramName === undefined) {\n      if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (code === 0x20 || code === 0x09) {\n        if (end === -1 && start !== -1) end = i;\n      } else if (code === 0x3b || code === 0x2c) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        push(params, header.slice(start, end), true);\n        if (code === 0x2c) {\n          push(offers, extensionName, params);\n          params = Object.create(null);\n          extensionName = undefined;\n        }\n\n        start = end = -1;\n      } else if (code === 0x3d /* '=' */ && start !== -1 && end === -1) {\n        paramName = header.slice(start, i);\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    } else {\n      //\n      // The value of a quoted-string after unescaping must conform to the\n      // token ABNF, so only token characters are valid.\n      // Ref: https://tools.ietf.org/html/rfc6455#section-9.1\n      //\n      if (isEscaping) {\n        if (tokenChars[code] !== 1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n        if (start === -1) start = i;\n        else if (!mustUnescape) mustUnescape = true;\n        isEscaping = false;\n      } else if (inQuotes) {\n        if (tokenChars[code] === 1) {\n          if (start === -1) start = i;\n        } else if (code === 0x22 /* '\"' */ && start !== -1) {\n          inQuotes = false;\n          end = i;\n        } else if (code === 0x5c /* '\\' */) {\n          isEscaping = true;\n        } else {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n      } else if (code === 0x22 && header.charCodeAt(i - 1) === 0x3d) {\n        inQuotes = true;\n      } else if (end === -1 && tokenChars[code] === 1) {\n        if (start === -1) start = i;\n      } else if (start !== -1 && (code === 0x20 || code === 0x09)) {\n        if (end === -1) end = i;\n      } else if (code === 0x3b || code === 0x2c) {\n        if (start === -1) {\n          throw new SyntaxError(`Unexpected character at index ${i}`);\n        }\n\n        if (end === -1) end = i;\n        let value = header.slice(start, end);\n        if (mustUnescape) {\n          value = value.replace(/\\\\/g, '');\n          mustUnescape = false;\n        }\n        push(params, paramName, value);\n        if (code === 0x2c) {\n          push(offers, extensionName, params);\n          params = Object.create(null);\n          extensionName = undefined;\n        }\n\n        paramName = undefined;\n        start = end = -1;\n      } else {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n    }\n  }\n\n  if (start === -1 || inQuotes || code === 0x20 || code === 0x09) {\n    throw new SyntaxError('Unexpected end of input');\n  }\n\n  if (end === -1) end = i;\n  const token = header.slice(start, end);\n  if (extensionName === undefined) {\n    push(offers, token, params);\n  } else {\n    if (paramName === undefined) {\n      push(params, token, true);\n    } else if (mustUnescape) {\n      push(params, paramName, token.replace(/\\\\/g, ''));\n    } else {\n      push(params, paramName, token);\n    }\n    push(offers, extensionName, params);\n  }\n\n  return offers;\n}\n\n/**\n * Builds the `Sec-WebSocket-Extensions` header field value.\n *\n * @param {Object} extensions The map of extensions and parameters to format\n * @return {String} A string representing the given object\n * @public\n */\nfunction format(extensions) {\n  return Object.keys(extensions)\n    .map((extension) => {\n      let configurations = extensions[extension];\n      if (!Array.isArray(configurations)) configurations = [configurations];\n      return configurations\n        .map((params) => {\n          return [extension]\n            .concat(\n              Object.keys(params).map((k) => {\n                let values = params[k];\n                if (!Array.isArray(values)) values = [values];\n                return values\n                  .map((v) => (v === true ? k : `${k}=${v}`))\n                  .join('; ');\n              })\n            )\n            .join('; ');\n        })\n        .join(', ');\n    })\n    .join(', ');\n}\n\nmodule.exports = { format, parse };\n","'use strict';\n\nconst kDone = Symbol('kDone');\nconst kRun = Symbol('kRun');\n\n/**\n * A very simple job queue with adjustable concurrency. Adapted from\n * https://github.com/STRML/async-limiter\n */\nclass Limiter {\n  /**\n   * Creates a new `Limiter`.\n   *\n   * @param {Number} [concurrency=Infinity] The maximum number of jobs allowed\n   *     to run concurrently\n   */\n  constructor(concurrency) {\n    this[kDone] = () => {\n      this.pending--;\n      this[kRun]();\n    };\n    this.concurrency = concurrency || Infinity;\n    this.jobs = [];\n    this.pending = 0;\n  }\n\n  /**\n   * Adds a job to the queue.\n   *\n   * @param {Function} job The job to run\n   * @public\n   */\n  add(job) {\n    this.jobs.push(job);\n    this[kRun]();\n  }\n\n  /**\n   * Removes a job from the queue and runs it if possible.\n   *\n   * @private\n   */\n  [kRun]() {\n    if (this.pending === this.concurrency) return;\n\n    if (this.jobs.length) {\n      const job = this.jobs.shift();\n\n      this.pending++;\n      job(this[kDone]);\n    }\n  }\n}\n\nmodule.exports = Limiter;\n","'use strict';\n\nconst zlib = require('zlib');\n\nconst bufferUtil = require('./buffer-util');\nconst Limiter = require('./limiter');\nconst { kStatusCode } = require('./constants');\n\nconst FastBuffer = Buffer[Symbol.species];\nconst TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);\nconst kPerMessageDeflate = Symbol('permessage-deflate');\nconst kTotalLength = Symbol('total-length');\nconst kCallback = Symbol('callback');\nconst kBuffers = Symbol('buffers');\nconst kError = Symbol('error');\n\n//\n// We limit zlib concurrency, which prevents severe memory fragmentation\n// as documented in https://github.com/nodejs/node/issues/8871#issuecomment-250915913\n// and https://github.com/websockets/ws/issues/1202\n//\n// Intentionally global; it's the global thread pool that's an issue.\n//\nlet zlibLimiter;\n\n/**\n * permessage-deflate implementation.\n */\nclass PerMessageDeflate {\n  /**\n   * Creates a PerMessageDeflate instance.\n   *\n   * @param {Object} [options] Configuration options\n   * @param {(Boolean|Number)} [options.clientMaxWindowBits] Advertise support\n   *     for, or request, a custom client window size\n   * @param {Boolean} [options.clientNoContextTakeover=false] Advertise/\n   *     acknowledge disabling of client context takeover\n   * @param {Number} [options.concurrencyLimit=10] The number of concurrent\n   *     calls to zlib\n   * @param {(Boolean|Number)} [options.serverMaxWindowBits] Request/confirm the\n   *     use of a custom server window size\n   * @param {Boolean} [options.serverNoContextTakeover=false] Request/accept\n   *     disabling of server context takeover\n   * @param {Number} [options.threshold=1024] Size (in bytes) below which\n   *     messages should not be compressed if context takeover is disabled\n   * @param {Object} [options.zlibDeflateOptions] Options to pass to zlib on\n   *     deflate\n   * @param {Object} [options.zlibInflateOptions] Options to pass to zlib on\n   *     inflate\n   * @param {Boolean} [isServer=false] Create the instance in either server or\n   *     client mode\n   * @param {Number} [maxPayload=0] The maximum allowed message length\n   */\n  constructor(options, isServer, maxPayload) {\n    this._maxPayload = maxPayload | 0;\n    this._options = options || {};\n    this._threshold =\n      this._options.threshold !== undefined ? this._options.threshold : 1024;\n    this._isServer = !!isServer;\n    this._deflate = null;\n    this._inflate = null;\n\n    this.params = null;\n\n    if (!zlibLimiter) {\n      const concurrency =\n        this._options.concurrencyLimit !== undefined\n          ? this._options.concurrencyLimit\n          : 10;\n      zlibLimiter = new Limiter(concurrency);\n    }\n  }\n\n  /**\n   * @type {String}\n   */\n  static get extensionName() {\n    return 'permessage-deflate';\n  }\n\n  /**\n   * Create an extension negotiation offer.\n   *\n   * @return {Object} Extension parameters\n   * @public\n   */\n  offer() {\n    const params = {};\n\n    if (this._options.serverNoContextTakeover) {\n      params.server_no_context_takeover = true;\n    }\n    if (this._options.clientNoContextTakeover) {\n      params.client_no_context_takeover = true;\n    }\n    if (this._options.serverMaxWindowBits) {\n      params.server_max_window_bits = this._options.serverMaxWindowBits;\n    }\n    if (this._options.clientMaxWindowBits) {\n      params.client_max_window_bits = this._options.clientMaxWindowBits;\n    } else if (this._options.clientMaxWindowBits == null) {\n      params.client_max_window_bits = true;\n    }\n\n    return params;\n  }\n\n  /**\n   * Accept an extension negotiation offer/response.\n   *\n   * @param {Array} configurations The extension negotiation offers/reponse\n   * @return {Object} Accepted configuration\n   * @public\n   */\n  accept(configurations) {\n    configurations = this.normalizeParams(configurations);\n\n    this.params = this._isServer\n      ? this.acceptAsServer(configurations)\n      : this.acceptAsClient(configurations);\n\n    return this.params;\n  }\n\n  /**\n   * Releases all resources used by the extension.\n   *\n   * @public\n   */\n  cleanup() {\n    if (this._inflate) {\n      this._inflate.close();\n      this._inflate = null;\n    }\n\n    if (this._deflate) {\n      const callback = this._deflate[kCallback];\n\n      this._deflate.close();\n      this._deflate = null;\n\n      if (callback) {\n        callback(\n          new Error(\n            'The deflate stream was closed while data was being processed'\n          )\n        );\n      }\n    }\n  }\n\n  /**\n   *  Accept an extension negotiation offer.\n   *\n   * @param {Array} offers The extension negotiation offers\n   * @return {Object} Accepted configuration\n   * @private\n   */\n  acceptAsServer(offers) {\n    const opts = this._options;\n    const accepted = offers.find((params) => {\n      if (\n        (opts.serverNoContextTakeover === false &&\n          params.server_no_context_takeover) ||\n        (params.server_max_window_bits &&\n          (opts.serverMaxWindowBits === false ||\n            (typeof opts.serverMaxWindowBits === 'number' &&\n              opts.serverMaxWindowBits > params.server_max_window_bits))) ||\n        (typeof opts.clientMaxWindowBits === 'number' &&\n          !params.client_max_window_bits)\n      ) {\n        return false;\n      }\n\n      return true;\n    });\n\n    if (!accepted) {\n      throw new Error('None of the extension offers can be accepted');\n    }\n\n    if (opts.serverNoContextTakeover) {\n      accepted.server_no_context_takeover = true;\n    }\n    if (opts.clientNoContextTakeover) {\n      accepted.client_no_context_takeover = true;\n    }\n    if (typeof opts.serverMaxWindowBits === 'number') {\n      accepted.server_max_window_bits = opts.serverMaxWindowBits;\n    }\n    if (typeof opts.clientMaxWindowBits === 'number') {\n      accepted.client_max_window_bits = opts.clientMaxWindowBits;\n    } else if (\n      accepted.client_max_window_bits === true ||\n      opts.clientMaxWindowBits === false\n    ) {\n      delete accepted.client_max_window_bits;\n    }\n\n    return accepted;\n  }\n\n  /**\n   * Accept the extension negotiation response.\n   *\n   * @param {Array} response The extension negotiation response\n   * @return {Object} Accepted configuration\n   * @private\n   */\n  acceptAsClient(response) {\n    const params = response[0];\n\n    if (\n      this._options.clientNoContextTakeover === false &&\n      params.client_no_context_takeover\n    ) {\n      throw new Error('Unexpected parameter \"client_no_context_takeover\"');\n    }\n\n    if (!params.client_max_window_bits) {\n      if (typeof this._options.clientMaxWindowBits === 'number') {\n        params.client_max_window_bits = this._options.clientMaxWindowBits;\n      }\n    } else if (\n      this._options.clientMaxWindowBits === false ||\n      (typeof this._options.clientMaxWindowBits === 'number' &&\n        params.client_max_window_bits > this._options.clientMaxWindowBits)\n    ) {\n      throw new Error(\n        'Unexpected or invalid parameter \"client_max_window_bits\"'\n      );\n    }\n\n    return params;\n  }\n\n  /**\n   * Normalize parameters.\n   *\n   * @param {Array} configurations The extension negotiation offers/reponse\n   * @return {Array} The offers/response with normalized parameters\n   * @private\n   */\n  normalizeParams(configurations) {\n    configurations.forEach((params) => {\n      Object.keys(params).forEach((key) => {\n        let value = params[key];\n\n        if (value.length > 1) {\n          throw new Error(`Parameter \"${key}\" must have only a single value`);\n        }\n\n        value = value[0];\n\n        if (key === 'client_max_window_bits') {\n          if (value !== true) {\n            const num = +value;\n            if (!Number.isInteger(num) || num < 8 || num > 15) {\n              throw new TypeError(\n                `Invalid value for parameter \"${key}\": ${value}`\n              );\n            }\n            value = num;\n          } else if (!this._isServer) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n        } else if (key === 'server_max_window_bits') {\n          const num = +value;\n          if (!Number.isInteger(num) || num < 8 || num > 15) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n          value = num;\n        } else if (\n          key === 'client_no_context_takeover' ||\n          key === 'server_no_context_takeover'\n        ) {\n          if (value !== true) {\n            throw new TypeError(\n              `Invalid value for parameter \"${key}\": ${value}`\n            );\n          }\n        } else {\n          throw new Error(`Unknown parameter \"${key}\"`);\n        }\n\n        params[key] = value;\n      });\n    });\n\n    return configurations;\n  }\n\n  /**\n   * Decompress data. Concurrency limited.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @public\n   */\n  decompress(data, fin, callback) {\n    zlibLimiter.add((done) => {\n      this._decompress(data, fin, (err, result) => {\n        done();\n        callback(err, result);\n      });\n    });\n  }\n\n  /**\n   * Compress data. Concurrency limited.\n   *\n   * @param {(Buffer|String)} data Data to compress\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @public\n   */\n  compress(data, fin, callback) {\n    zlibLimiter.add((done) => {\n      this._compress(data, fin, (err, result) => {\n        done();\n        callback(err, result);\n      });\n    });\n  }\n\n  /**\n   * Decompress data.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @private\n   */\n  _decompress(data, fin, callback) {\n    const endpoint = this._isServer ? 'client' : 'server';\n\n    if (!this._inflate) {\n      const key = `${endpoint}_max_window_bits`;\n      const windowBits =\n        typeof this.params[key] !== 'number'\n          ? zlib.Z_DEFAULT_WINDOWBITS\n          : this.params[key];\n\n      this._inflate = zlib.createInflateRaw({\n        ...this._options.zlibInflateOptions,\n        windowBits\n      });\n      this._inflate[kPerMessageDeflate] = this;\n      this._inflate[kTotalLength] = 0;\n      this._inflate[kBuffers] = [];\n      this._inflate.on('error', inflateOnError);\n      this._inflate.on('data', inflateOnData);\n    }\n\n    this._inflate[kCallback] = callback;\n\n    this._inflate.write(data);\n    if (fin) this._inflate.write(TRAILER);\n\n    this._inflate.flush(() => {\n      const err = this._inflate[kError];\n\n      if (err) {\n        this._inflate.close();\n        this._inflate = null;\n        callback(err);\n        return;\n      }\n\n      const data = bufferUtil.concat(\n        this._inflate[kBuffers],\n        this._inflate[kTotalLength]\n      );\n\n      if (this._inflate._readableState.endEmitted) {\n        this._inflate.close();\n        this._inflate = null;\n      } else {\n        this._inflate[kTotalLength] = 0;\n        this._inflate[kBuffers] = [];\n\n        if (fin && this.params[`${endpoint}_no_context_takeover`]) {\n          this._inflate.reset();\n        }\n      }\n\n      callback(null, data);\n    });\n  }\n\n  /**\n   * Compress data.\n   *\n   * @param {(Buffer|String)} data Data to compress\n   * @param {Boolean} fin Specifies whether or not this is the last fragment\n   * @param {Function} callback Callback\n   * @private\n   */\n  _compress(data, fin, callback) {\n    const endpoint = this._isServer ? 'server' : 'client';\n\n    if (!this._deflate) {\n      const key = `${endpoint}_max_window_bits`;\n      const windowBits =\n        typeof this.params[key] !== 'number'\n          ? zlib.Z_DEFAULT_WINDOWBITS\n          : this.params[key];\n\n      this._deflate = zlib.createDeflateRaw({\n        ...this._options.zlibDeflateOptions,\n        windowBits\n      });\n\n      this._deflate[kTotalLength] = 0;\n      this._deflate[kBuffers] = [];\n\n      this._deflate.on('data', deflateOnData);\n    }\n\n    this._deflate[kCallback] = callback;\n\n    this._deflate.write(data);\n    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {\n      if (!this._deflate) {\n        //\n        // The deflate stream was closed while data was being processed.\n        //\n        return;\n      }\n\n      let data = bufferUtil.concat(\n        this._deflate[kBuffers],\n        this._deflate[kTotalLength]\n      );\n\n      if (fin) {\n        data = new FastBuffer(data.buffer, data.byteOffset, data.length - 4);\n      }\n\n      //\n      // Ensure that the callback will not be called again in\n      // `PerMessageDeflate#cleanup()`.\n      //\n      this._deflate[kCallback] = null;\n\n      this._deflate[kTotalLength] = 0;\n      this._deflate[kBuffers] = [];\n\n      if (fin && this.params[`${endpoint}_no_context_takeover`]) {\n        this._deflate.reset();\n      }\n\n      callback(null, data);\n    });\n  }\n}\n\nmodule.exports = PerMessageDeflate;\n\n/**\n * The listener of the `zlib.DeflateRaw` stream `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction deflateOnData(chunk) {\n  this[kBuffers].push(chunk);\n  this[kTotalLength] += chunk.length;\n}\n\n/**\n * The listener of the `zlib.InflateRaw` stream `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction inflateOnData(chunk) {\n  this[kTotalLength] += chunk.length;\n\n  if (\n    this[kPerMessageDeflate]._maxPayload < 1 ||\n    this[kTotalLength] <= this[kPerMessageDeflate]._maxPayload\n  ) {\n    this[kBuffers].push(chunk);\n    return;\n  }\n\n  this[kError] = new RangeError('Max payload size exceeded');\n  this[kError].code = 'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH';\n  this[kError][kStatusCode] = 1009;\n  this.removeListener('data', inflateOnData);\n  this.reset();\n}\n\n/**\n * The listener of the `zlib.InflateRaw` stream `'error'` event.\n *\n * @param {Error} err The emitted error\n * @private\n */\nfunction inflateOnError(err) {\n  //\n  // There is no need to call `Zlib#close()` as the handle is automatically\n  // closed when an error is emitted.\n  //\n  this[kPerMessageDeflate]._inflate = null;\n  err[kStatusCode] = 1007;\n  this[kCallback](err);\n}\n","'use strict';\n\nconst { Writable } = require('stream');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst {\n  BINARY_TYPES,\n  EMPTY_BUFFER,\n  kStatusCode,\n  kWebSocket\n} = require('./constants');\nconst { concat, toArrayBuffer, unmask } = require('./buffer-util');\nconst { isValidStatusCode, isValidUTF8 } = require('./validation');\n\nconst FastBuffer = Buffer[Symbol.species];\nconst GET_INFO = 0;\nconst GET_PAYLOAD_LENGTH_16 = 1;\nconst GET_PAYLOAD_LENGTH_64 = 2;\nconst GET_MASK = 3;\nconst GET_DATA = 4;\nconst INFLATING = 5;\n\n/**\n * HyBi Receiver implementation.\n *\n * @extends Writable\n */\nclass Receiver extends Writable {\n  /**\n   * Creates a Receiver instance.\n   *\n   * @param {Object} [options] Options object\n   * @param {String} [options.binaryType=nodebuffer] The type for binary data\n   * @param {Object} [options.extensions] An object containing the negotiated\n   *     extensions\n   * @param {Boolean} [options.isServer=false] Specifies whether to operate in\n   *     client or server mode\n   * @param {Number} [options.maxPayload=0] The maximum allowed message length\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   */\n  constructor(options = {}) {\n    super();\n\n    this._binaryType = options.binaryType || BINARY_TYPES[0];\n    this._extensions = options.extensions || {};\n    this._isServer = !!options.isServer;\n    this._maxPayload = options.maxPayload | 0;\n    this._skipUTF8Validation = !!options.skipUTF8Validation;\n    this[kWebSocket] = undefined;\n\n    this._bufferedBytes = 0;\n    this._buffers = [];\n\n    this._compressed = false;\n    this._payloadLength = 0;\n    this._mask = undefined;\n    this._fragmented = 0;\n    this._masked = false;\n    this._fin = false;\n    this._opcode = 0;\n\n    this._totalPayloadLength = 0;\n    this._messageLength = 0;\n    this._fragments = [];\n\n    this._state = GET_INFO;\n    this._loop = false;\n  }\n\n  /**\n   * Implements `Writable.prototype._write()`.\n   *\n   * @param {Buffer} chunk The chunk of data to write\n   * @param {String} encoding The character encoding of `chunk`\n   * @param {Function} cb Callback\n   * @private\n   */\n  _write(chunk, encoding, cb) {\n    if (this._opcode === 0x08 && this._state == GET_INFO) return cb();\n\n    this._bufferedBytes += chunk.length;\n    this._buffers.push(chunk);\n    this.startLoop(cb);\n  }\n\n  /**\n   * Consumes `n` bytes from the buffered data.\n   *\n   * @param {Number} n The number of bytes to consume\n   * @return {Buffer} The consumed bytes\n   * @private\n   */\n  consume(n) {\n    this._bufferedBytes -= n;\n\n    if (n === this._buffers[0].length) return this._buffers.shift();\n\n    if (n < this._buffers[0].length) {\n      const buf = this._buffers[0];\n      this._buffers[0] = new FastBuffer(\n        buf.buffer,\n        buf.byteOffset + n,\n        buf.length - n\n      );\n\n      return new FastBuffer(buf.buffer, buf.byteOffset, n);\n    }\n\n    const dst = Buffer.allocUnsafe(n);\n\n    do {\n      const buf = this._buffers[0];\n      const offset = dst.length - n;\n\n      if (n >= buf.length) {\n        dst.set(this._buffers.shift(), offset);\n      } else {\n        dst.set(new Uint8Array(buf.buffer, buf.byteOffset, n), offset);\n        this._buffers[0] = new FastBuffer(\n          buf.buffer,\n          buf.byteOffset + n,\n          buf.length - n\n        );\n      }\n\n      n -= buf.length;\n    } while (n > 0);\n\n    return dst;\n  }\n\n  /**\n   * Starts the parsing loop.\n   *\n   * @param {Function} cb Callback\n   * @private\n   */\n  startLoop(cb) {\n    let err;\n    this._loop = true;\n\n    do {\n      switch (this._state) {\n        case GET_INFO:\n          err = this.getInfo();\n          break;\n        case GET_PAYLOAD_LENGTH_16:\n          err = this.getPayloadLength16();\n          break;\n        case GET_PAYLOAD_LENGTH_64:\n          err = this.getPayloadLength64();\n          break;\n        case GET_MASK:\n          this.getMask();\n          break;\n        case GET_DATA:\n          err = this.getData(cb);\n          break;\n        default:\n          // `INFLATING`\n          this._loop = false;\n          return;\n      }\n    } while (this._loop);\n\n    cb(err);\n  }\n\n  /**\n   * Reads the first two bytes of a frame.\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getInfo() {\n    if (this._bufferedBytes < 2) {\n      this._loop = false;\n      return;\n    }\n\n    const buf = this.consume(2);\n\n    if ((buf[0] & 0x30) !== 0x00) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'RSV2 and RSV3 must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_RSV_2_3'\n      );\n    }\n\n    const compressed = (buf[0] & 0x40) === 0x40;\n\n    if (compressed && !this._extensions[PerMessageDeflate.extensionName]) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'RSV1 must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_RSV_1'\n      );\n    }\n\n    this._fin = (buf[0] & 0x80) === 0x80;\n    this._opcode = buf[0] & 0x0f;\n    this._payloadLength = buf[1] & 0x7f;\n\n    if (this._opcode === 0x00) {\n      if (compressed) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'RSV1 must be clear',\n          true,\n          1002,\n          'WS_ERR_UNEXPECTED_RSV_1'\n        );\n      }\n\n      if (!this._fragmented) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'invalid opcode 0',\n          true,\n          1002,\n          'WS_ERR_INVALID_OPCODE'\n        );\n      }\n\n      this._opcode = this._fragmented;\n    } else if (this._opcode === 0x01 || this._opcode === 0x02) {\n      if (this._fragmented) {\n        this._loop = false;\n        return error(\n          RangeError,\n          `invalid opcode ${this._opcode}`,\n          true,\n          1002,\n          'WS_ERR_INVALID_OPCODE'\n        );\n      }\n\n      this._compressed = compressed;\n    } else if (this._opcode > 0x07 && this._opcode < 0x0b) {\n      if (!this._fin) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'FIN must be set',\n          true,\n          1002,\n          'WS_ERR_EXPECTED_FIN'\n        );\n      }\n\n      if (compressed) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'RSV1 must be clear',\n          true,\n          1002,\n          'WS_ERR_UNEXPECTED_RSV_1'\n        );\n      }\n\n      if (\n        this._payloadLength > 0x7d ||\n        (this._opcode === 0x08 && this._payloadLength === 1)\n      ) {\n        this._loop = false;\n        return error(\n          RangeError,\n          `invalid payload length ${this._payloadLength}`,\n          true,\n          1002,\n          'WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH'\n        );\n      }\n    } else {\n      this._loop = false;\n      return error(\n        RangeError,\n        `invalid opcode ${this._opcode}`,\n        true,\n        1002,\n        'WS_ERR_INVALID_OPCODE'\n      );\n    }\n\n    if (!this._fin && !this._fragmented) this._fragmented = this._opcode;\n    this._masked = (buf[1] & 0x80) === 0x80;\n\n    if (this._isServer) {\n      if (!this._masked) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'MASK must be set',\n          true,\n          1002,\n          'WS_ERR_EXPECTED_MASK'\n        );\n      }\n    } else if (this._masked) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'MASK must be clear',\n        true,\n        1002,\n        'WS_ERR_UNEXPECTED_MASK'\n      );\n    }\n\n    if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;\n    else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;\n    else return this.haveLength();\n  }\n\n  /**\n   * Gets extended payload length (7+16).\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getPayloadLength16() {\n    if (this._bufferedBytes < 2) {\n      this._loop = false;\n      return;\n    }\n\n    this._payloadLength = this.consume(2).readUInt16BE(0);\n    return this.haveLength();\n  }\n\n  /**\n   * Gets extended payload length (7+64).\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  getPayloadLength64() {\n    if (this._bufferedBytes < 8) {\n      this._loop = false;\n      return;\n    }\n\n    const buf = this.consume(8);\n    const num = buf.readUInt32BE(0);\n\n    //\n    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned\n    // if payload length is greater than this number.\n    //\n    if (num > Math.pow(2, 53 - 32) - 1) {\n      this._loop = false;\n      return error(\n        RangeError,\n        'Unsupported WebSocket frame: payload length > 2^53 - 1',\n        false,\n        1009,\n        'WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH'\n      );\n    }\n\n    this._payloadLength = num * Math.pow(2, 32) + buf.readUInt32BE(4);\n    return this.haveLength();\n  }\n\n  /**\n   * Payload length has been read.\n   *\n   * @return {(RangeError|undefined)} A possible error\n   * @private\n   */\n  haveLength() {\n    if (this._payloadLength && this._opcode < 0x08) {\n      this._totalPayloadLength += this._payloadLength;\n      if (this._totalPayloadLength > this._maxPayload && this._maxPayload > 0) {\n        this._loop = false;\n        return error(\n          RangeError,\n          'Max payload size exceeded',\n          false,\n          1009,\n          'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH'\n        );\n      }\n    }\n\n    if (this._masked) this._state = GET_MASK;\n    else this._state = GET_DATA;\n  }\n\n  /**\n   * Reads mask bytes.\n   *\n   * @private\n   */\n  getMask() {\n    if (this._bufferedBytes < 4) {\n      this._loop = false;\n      return;\n    }\n\n    this._mask = this.consume(4);\n    this._state = GET_DATA;\n  }\n\n  /**\n   * Reads data bytes.\n   *\n   * @param {Function} cb Callback\n   * @return {(Error|RangeError|undefined)} A possible error\n   * @private\n   */\n  getData(cb) {\n    let data = EMPTY_BUFFER;\n\n    if (this._payloadLength) {\n      if (this._bufferedBytes < this._payloadLength) {\n        this._loop = false;\n        return;\n      }\n\n      data = this.consume(this._payloadLength);\n\n      if (\n        this._masked &&\n        (this._mask[0] | this._mask[1] | this._mask[2] | this._mask[3]) !== 0\n      ) {\n        unmask(data, this._mask);\n      }\n    }\n\n    if (this._opcode > 0x07) return this.controlMessage(data);\n\n    if (this._compressed) {\n      this._state = INFLATING;\n      this.decompress(data, cb);\n      return;\n    }\n\n    if (data.length) {\n      //\n      // This message is not compressed so its length is the sum of the payload\n      // length of all fragments.\n      //\n      this._messageLength = this._totalPayloadLength;\n      this._fragments.push(data);\n    }\n\n    return this.dataMessage();\n  }\n\n  /**\n   * Decompresses data.\n   *\n   * @param {Buffer} data Compressed data\n   * @param {Function} cb Callback\n   * @private\n   */\n  decompress(data, cb) {\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n\n    perMessageDeflate.decompress(data, this._fin, (err, buf) => {\n      if (err) return cb(err);\n\n      if (buf.length) {\n        this._messageLength += buf.length;\n        if (this._messageLength > this._maxPayload && this._maxPayload > 0) {\n          return cb(\n            error(\n              RangeError,\n              'Max payload size exceeded',\n              false,\n              1009,\n              'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH'\n            )\n          );\n        }\n\n        this._fragments.push(buf);\n      }\n\n      const er = this.dataMessage();\n      if (er) return cb(er);\n\n      this.startLoop(cb);\n    });\n  }\n\n  /**\n   * Handles a data message.\n   *\n   * @return {(Error|undefined)} A possible error\n   * @private\n   */\n  dataMessage() {\n    if (this._fin) {\n      const messageLength = this._messageLength;\n      const fragments = this._fragments;\n\n      this._totalPayloadLength = 0;\n      this._messageLength = 0;\n      this._fragmented = 0;\n      this._fragments = [];\n\n      if (this._opcode === 2) {\n        let data;\n\n        if (this._binaryType === 'nodebuffer') {\n          data = concat(fragments, messageLength);\n        } else if (this._binaryType === 'arraybuffer') {\n          data = toArrayBuffer(concat(fragments, messageLength));\n        } else {\n          data = fragments;\n        }\n\n        this.emit('message', data, true);\n      } else {\n        const buf = concat(fragments, messageLength);\n\n        if (!this._skipUTF8Validation && !isValidUTF8(buf)) {\n          this._loop = false;\n          return error(\n            Error,\n            'invalid UTF-8 sequence',\n            true,\n            1007,\n            'WS_ERR_INVALID_UTF8'\n          );\n        }\n\n        this.emit('message', buf, false);\n      }\n    }\n\n    this._state = GET_INFO;\n  }\n\n  /**\n   * Handles a control message.\n   *\n   * @param {Buffer} data Data to handle\n   * @return {(Error|RangeError|undefined)} A possible error\n   * @private\n   */\n  controlMessage(data) {\n    if (this._opcode === 0x08) {\n      this._loop = false;\n\n      if (data.length === 0) {\n        this.emit('conclude', 1005, EMPTY_BUFFER);\n        this.end();\n      } else {\n        const code = data.readUInt16BE(0);\n\n        if (!isValidStatusCode(code)) {\n          return error(\n            RangeError,\n            `invalid status code ${code}`,\n            true,\n            1002,\n            'WS_ERR_INVALID_CLOSE_CODE'\n          );\n        }\n\n        const buf = new FastBuffer(\n          data.buffer,\n          data.byteOffset + 2,\n          data.length - 2\n        );\n\n        if (!this._skipUTF8Validation && !isValidUTF8(buf)) {\n          return error(\n            Error,\n            'invalid UTF-8 sequence',\n            true,\n            1007,\n            'WS_ERR_INVALID_UTF8'\n          );\n        }\n\n        this.emit('conclude', code, buf);\n        this.end();\n      }\n    } else if (this._opcode === 0x09) {\n      this.emit('ping', data);\n    } else {\n      this.emit('pong', data);\n    }\n\n    this._state = GET_INFO;\n  }\n}\n\nmodule.exports = Receiver;\n\n/**\n * Builds an error object.\n *\n * @param {function(new:Error|RangeError)} ErrorCtor The error constructor\n * @param {String} message The error message\n * @param {Boolean} prefix Specifies whether or not to add a default prefix to\n *     `message`\n * @param {Number} statusCode The status code\n * @param {String} errorCode The exposed error code\n * @return {(Error|RangeError)} The error\n * @private\n */\nfunction error(ErrorCtor, message, prefix, statusCode, errorCode) {\n  const err = new ErrorCtor(\n    prefix ? `Invalid WebSocket frame: ${message}` : message\n  );\n\n  Error.captureStackTrace(err, error);\n  err.code = errorCode;\n  err[kStatusCode] = statusCode;\n  return err;\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^net|tls$\" }] */\n\n'use strict';\n\nconst net = require('net');\nconst tls = require('tls');\nconst { randomFillSync } = require('crypto');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst { EMPTY_BUFFER } = require('./constants');\nconst { isValidStatusCode } = require('./validation');\nconst { mask: applyMask, toBuffer } = require('./buffer-util');\n\nconst kByteLength = Symbol('kByteLength');\nconst maskBuffer = Buffer.alloc(4);\n\n/**\n * HyBi Sender implementation.\n */\nclass Sender {\n  /**\n   * Creates a Sender instance.\n   *\n   * @param {(net.Socket|tls.Socket)} socket The connection socket\n   * @param {Object} [extensions] An object containing the negotiated extensions\n   * @param {Function} [generateMask] The function used to generate the masking\n   *     key\n   */\n  constructor(socket, extensions, generateMask) {\n    this._extensions = extensions || {};\n\n    if (generateMask) {\n      this._generateMask = generateMask;\n      this._maskBuffer = Buffer.alloc(4);\n    }\n\n    this._socket = socket;\n\n    this._firstFragment = true;\n    this._compress = false;\n\n    this._bufferedBytes = 0;\n    this._deflating = false;\n    this._queue = [];\n  }\n\n  /**\n   * Frames a piece of data according to the HyBi WebSocket protocol.\n   *\n   * @param {(Buffer|String)} data The data to frame\n   * @param {Object} options Options object\n   * @param {Boolean} [options.fin=false] Specifies whether or not to set the\n   *     FIN bit\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Buffer} [options.maskBuffer] The buffer used to store the masking\n   *     key\n   * @param {Number} options.opcode The opcode\n   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be\n   *     modified\n   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the\n   *     RSV1 bit\n   * @return {(Buffer|String)[]} The framed data\n   * @public\n   */\n  static frame(data, options) {\n    let mask;\n    let merge = false;\n    let offset = 2;\n    let skipMasking = false;\n\n    if (options.mask) {\n      mask = options.maskBuffer || maskBuffer;\n\n      if (options.generateMask) {\n        options.generateMask(mask);\n      } else {\n        randomFillSync(mask, 0, 4);\n      }\n\n      skipMasking = (mask[0] | mask[1] | mask[2] | mask[3]) === 0;\n      offset = 6;\n    }\n\n    let dataLength;\n\n    if (typeof data === 'string') {\n      if (\n        (!options.mask || skipMasking) &&\n        options[kByteLength] !== undefined\n      ) {\n        dataLength = options[kByteLength];\n      } else {\n        data = Buffer.from(data);\n        dataLength = data.length;\n      }\n    } else {\n      dataLength = data.length;\n      merge = options.mask && options.readOnly && !skipMasking;\n    }\n\n    let payloadLength = dataLength;\n\n    if (dataLength >= 65536) {\n      offset += 8;\n      payloadLength = 127;\n    } else if (dataLength > 125) {\n      offset += 2;\n      payloadLength = 126;\n    }\n\n    const target = Buffer.allocUnsafe(merge ? dataLength + offset : offset);\n\n    target[0] = options.fin ? options.opcode | 0x80 : options.opcode;\n    if (options.rsv1) target[0] |= 0x40;\n\n    target[1] = payloadLength;\n\n    if (payloadLength === 126) {\n      target.writeUInt16BE(dataLength, 2);\n    } else if (payloadLength === 127) {\n      target[2] = target[3] = 0;\n      target.writeUIntBE(dataLength, 4, 6);\n    }\n\n    if (!options.mask) return [target, data];\n\n    target[1] |= 0x80;\n    target[offset - 4] = mask[0];\n    target[offset - 3] = mask[1];\n    target[offset - 2] = mask[2];\n    target[offset - 1] = mask[3];\n\n    if (skipMasking) return [target, data];\n\n    if (merge) {\n      applyMask(data, mask, target, offset, dataLength);\n      return [target];\n    }\n\n    applyMask(data, mask, data, 0, dataLength);\n    return [target, data];\n  }\n\n  /**\n   * Sends a close message to the other peer.\n   *\n   * @param {Number} [code] The status code component of the body\n   * @param {(String|Buffer)} [data] The message component of the body\n   * @param {Boolean} [mask=false] Specifies whether or not to mask the message\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  close(code, data, mask, cb) {\n    let buf;\n\n    if (code === undefined) {\n      buf = EMPTY_BUFFER;\n    } else if (typeof code !== 'number' || !isValidStatusCode(code)) {\n      throw new TypeError('First argument must be a valid error code number');\n    } else if (data === undefined || !data.length) {\n      buf = Buffer.allocUnsafe(2);\n      buf.writeUInt16BE(code, 0);\n    } else {\n      const length = Buffer.byteLength(data);\n\n      if (length > 123) {\n        throw new RangeError('The message must not be greater than 123 bytes');\n      }\n\n      buf = Buffer.allocUnsafe(2 + length);\n      buf.writeUInt16BE(code, 0);\n\n      if (typeof data === 'string') {\n        buf.write(data, 2);\n      } else {\n        buf.set(data, 2);\n      }\n    }\n\n    const options = {\n      [kByteLength]: buf.length,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x08,\n      readOnly: false,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, buf, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(buf, options), cb);\n    }\n  }\n\n  /**\n   * Sends a ping message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  ping(data, mask, cb) {\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (byteLength > 125) {\n      throw new RangeError('The data size must not be greater than 125 bytes');\n    }\n\n    const options = {\n      [kByteLength]: byteLength,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x09,\n      readOnly,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, data, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(data, options), cb);\n    }\n  }\n\n  /**\n   * Sends a pong message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  pong(data, mask, cb) {\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (byteLength > 125) {\n      throw new RangeError('The data size must not be greater than 125 bytes');\n    }\n\n    const options = {\n      [kByteLength]: byteLength,\n      fin: true,\n      generateMask: this._generateMask,\n      mask,\n      maskBuffer: this._maskBuffer,\n      opcode: 0x0a,\n      readOnly,\n      rsv1: false\n    };\n\n    if (this._deflating) {\n      this.enqueue([this.dispatch, data, false, options, cb]);\n    } else {\n      this.sendFrame(Sender.frame(data, options), cb);\n    }\n  }\n\n  /**\n   * Sends a data message to the other peer.\n   *\n   * @param {*} data The message to send\n   * @param {Object} options Options object\n   * @param {Boolean} [options.binary=false] Specifies whether `data` is binary\n   *     or text\n   * @param {Boolean} [options.compress=false] Specifies whether or not to\n   *     compress `data`\n   * @param {Boolean} [options.fin=false] Specifies whether the fragment is the\n   *     last one\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Function} [cb] Callback\n   * @public\n   */\n  send(data, options, cb) {\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n    let opcode = options.binary ? 2 : 1;\n    let rsv1 = options.compress;\n\n    let byteLength;\n    let readOnly;\n\n    if (typeof data === 'string') {\n      byteLength = Buffer.byteLength(data);\n      readOnly = false;\n    } else {\n      data = toBuffer(data);\n      byteLength = data.length;\n      readOnly = toBuffer.readOnly;\n    }\n\n    if (this._firstFragment) {\n      this._firstFragment = false;\n      if (\n        rsv1 &&\n        perMessageDeflate &&\n        perMessageDeflate.params[\n          perMessageDeflate._isServer\n            ? 'server_no_context_takeover'\n            : 'client_no_context_takeover'\n        ]\n      ) {\n        rsv1 = byteLength >= perMessageDeflate._threshold;\n      }\n      this._compress = rsv1;\n    } else {\n      rsv1 = false;\n      opcode = 0;\n    }\n\n    if (options.fin) this._firstFragment = true;\n\n    if (perMessageDeflate) {\n      const opts = {\n        [kByteLength]: byteLength,\n        fin: options.fin,\n        generateMask: this._generateMask,\n        mask: options.mask,\n        maskBuffer: this._maskBuffer,\n        opcode,\n        readOnly,\n        rsv1\n      };\n\n      if (this._deflating) {\n        this.enqueue([this.dispatch, data, this._compress, opts, cb]);\n      } else {\n        this.dispatch(data, this._compress, opts, cb);\n      }\n    } else {\n      this.sendFrame(\n        Sender.frame(data, {\n          [kByteLength]: byteLength,\n          fin: options.fin,\n          generateMask: this._generateMask,\n          mask: options.mask,\n          maskBuffer: this._maskBuffer,\n          opcode,\n          readOnly,\n          rsv1: false\n        }),\n        cb\n      );\n    }\n  }\n\n  /**\n   * Dispatches a message.\n   *\n   * @param {(Buffer|String)} data The message to send\n   * @param {Boolean} [compress=false] Specifies whether or not to compress\n   *     `data`\n   * @param {Object} options Options object\n   * @param {Boolean} [options.fin=false] Specifies whether or not to set the\n   *     FIN bit\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Boolean} [options.mask=false] Specifies whether or not to mask\n   *     `data`\n   * @param {Buffer} [options.maskBuffer] The buffer used to store the masking\n   *     key\n   * @param {Number} options.opcode The opcode\n   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be\n   *     modified\n   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the\n   *     RSV1 bit\n   * @param {Function} [cb] Callback\n   * @private\n   */\n  dispatch(data, compress, options, cb) {\n    if (!compress) {\n      this.sendFrame(Sender.frame(data, options), cb);\n      return;\n    }\n\n    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];\n\n    this._bufferedBytes += options[kByteLength];\n    this._deflating = true;\n    perMessageDeflate.compress(data, options.fin, (_, buf) => {\n      if (this._socket.destroyed) {\n        const err = new Error(\n          'The socket was closed while data was being compressed'\n        );\n\n        if (typeof cb === 'function') cb(err);\n\n        for (let i = 0; i < this._queue.length; i++) {\n          const params = this._queue[i];\n          const callback = params[params.length - 1];\n\n          if (typeof callback === 'function') callback(err);\n        }\n\n        return;\n      }\n\n      this._bufferedBytes -= options[kByteLength];\n      this._deflating = false;\n      options.readOnly = false;\n      this.sendFrame(Sender.frame(buf, options), cb);\n      this.dequeue();\n    });\n  }\n\n  /**\n   * Executes queued send operations.\n   *\n   * @private\n   */\n  dequeue() {\n    while (!this._deflating && this._queue.length) {\n      const params = this._queue.shift();\n\n      this._bufferedBytes -= params[3][kByteLength];\n      Reflect.apply(params[0], this, params.slice(1));\n    }\n  }\n\n  /**\n   * Enqueues a send operation.\n   *\n   * @param {Array} params Send operation parameters.\n   * @private\n   */\n  enqueue(params) {\n    this._bufferedBytes += params[3][kByteLength];\n    this._queue.push(params);\n  }\n\n  /**\n   * Sends a frame.\n   *\n   * @param {Buffer[]} list The frame to send\n   * @param {Function} [cb] Callback\n   * @private\n   */\n  sendFrame(list, cb) {\n    if (list.length === 2) {\n      this._socket.cork();\n      this._socket.write(list[0]);\n      this._socket.write(list[1], cb);\n      this._socket.uncork();\n    } else {\n      this._socket.write(list[0], cb);\n    }\n  }\n}\n\nmodule.exports = Sender;\n","'use strict';\n\nconst { Duplex } = require('stream');\n\n/**\n * Emits the `'close'` event on a stream.\n *\n * @param {Duplex} stream The stream.\n * @private\n */\nfunction emitClose(stream) {\n  stream.emit('close');\n}\n\n/**\n * The listener of the `'end'` event.\n *\n * @private\n */\nfunction duplexOnEnd() {\n  if (!this.destroyed && this._writableState.finished) {\n    this.destroy();\n  }\n}\n\n/**\n * The listener of the `'error'` event.\n *\n * @param {Error} err The error\n * @private\n */\nfunction duplexOnError(err) {\n  this.removeListener('error', duplexOnError);\n  this.destroy();\n  if (this.listenerCount('error') === 0) {\n    // Do not suppress the throwing behavior.\n    this.emit('error', err);\n  }\n}\n\n/**\n * Wraps a `WebSocket` in a duplex stream.\n *\n * @param {WebSocket} ws The `WebSocket` to wrap\n * @param {Object} [options] The options for the `Duplex` constructor\n * @return {Duplex} The duplex stream\n * @public\n */\nfunction createWebSocketStream(ws, options) {\n  let terminateOnDestroy = true;\n\n  const duplex = new Duplex({\n    ...options,\n    autoDestroy: false,\n    emitClose: false,\n    objectMode: false,\n    writableObjectMode: false\n  });\n\n  ws.on('message', function message(msg, isBinary) {\n    const data =\n      !isBinary && duplex._readableState.objectMode ? msg.toString() : msg;\n\n    if (!duplex.push(data)) ws.pause();\n  });\n\n  ws.once('error', function error(err) {\n    if (duplex.destroyed) return;\n\n    // Prevent `ws.terminate()` from being called by `duplex._destroy()`.\n    //\n    // - If the `'error'` event is emitted before the `'open'` event, then\n    //   `ws.terminate()` is a noop as no socket is assigned.\n    // - Otherwise, the error is re-emitted by the listener of the `'error'`\n    //   event of the `Receiver` object. The listener already closes the\n    //   connection by calling `ws.close()`. This allows a close frame to be\n    //   sent to the other peer. If `ws.terminate()` is called right after this,\n    //   then the close frame might not be sent.\n    terminateOnDestroy = false;\n    duplex.destroy(err);\n  });\n\n  ws.once('close', function close() {\n    if (duplex.destroyed) return;\n\n    duplex.push(null);\n  });\n\n  duplex._destroy = function (err, callback) {\n    if (ws.readyState === ws.CLOSED) {\n      callback(err);\n      process.nextTick(emitClose, duplex);\n      return;\n    }\n\n    let called = false;\n\n    ws.once('error', function error(err) {\n      called = true;\n      callback(err);\n    });\n\n    ws.once('close', function close() {\n      if (!called) callback(err);\n      process.nextTick(emitClose, duplex);\n    });\n\n    if (terminateOnDestroy) ws.terminate();\n  };\n\n  duplex._final = function (callback) {\n    if (ws.readyState === ws.CONNECTING) {\n      ws.once('open', function open() {\n        duplex._final(callback);\n      });\n      return;\n    }\n\n    // If the value of the `_socket` property is `null` it means that `ws` is a\n    // client websocket and the handshake failed. In fact, when this happens, a\n    // socket is never assigned to the websocket. Wait for the `'error'` event\n    // that will be emitted by the websocket.\n    if (ws._socket === null) return;\n\n    if (ws._socket._writableState.finished) {\n      callback();\n      if (duplex._readableState.endEmitted) duplex.destroy();\n    } else {\n      ws._socket.once('finish', function finish() {\n        // `duplex` is not destroyed here because the `'end'` event will be\n        // emitted on `duplex` after this `'finish'` event. The EOF signaling\n        // `null` chunk is, in fact, pushed when the websocket emits `'close'`.\n        callback();\n      });\n      ws.close();\n    }\n  };\n\n  duplex._read = function () {\n    if (ws.isPaused) ws.resume();\n  };\n\n  duplex._write = function (chunk, encoding, callback) {\n    if (ws.readyState === ws.CONNECTING) {\n      ws.once('open', function open() {\n        duplex._write(chunk, encoding, callback);\n      });\n      return;\n    }\n\n    ws.send(chunk, callback);\n  };\n\n  duplex.on('end', duplexOnEnd);\n  duplex.on('error', duplexOnError);\n  return duplex;\n}\n\nmodule.exports = createWebSocketStream;\n","'use strict';\n\nconst { tokenChars } = require('./validation');\n\n/**\n * Parses the `Sec-WebSocket-Protocol` header into a set of subprotocol names.\n *\n * @param {String} header The field value of the header\n * @return {Set} The subprotocol names\n * @public\n */\nfunction parse(header) {\n  const protocols = new Set();\n  let start = -1;\n  let end = -1;\n  let i = 0;\n\n  for (i; i < header.length; i++) {\n    const code = header.charCodeAt(i);\n\n    if (end === -1 && tokenChars[code] === 1) {\n      if (start === -1) start = i;\n    } else if (\n      i !== 0 &&\n      (code === 0x20 /* ' ' */ || code === 0x09) /* '\\t' */\n    ) {\n      if (end === -1 && start !== -1) end = i;\n    } else if (code === 0x2c /* ',' */) {\n      if (start === -1) {\n        throw new SyntaxError(`Unexpected character at index ${i}`);\n      }\n\n      if (end === -1) end = i;\n\n      const protocol = header.slice(start, end);\n\n      if (protocols.has(protocol)) {\n        throw new SyntaxError(`The \"${protocol}\" subprotocol is duplicated`);\n      }\n\n      protocols.add(protocol);\n      start = end = -1;\n    } else {\n      throw new SyntaxError(`Unexpected character at index ${i}`);\n    }\n  }\n\n  if (start === -1 || end !== -1) {\n    throw new SyntaxError('Unexpected end of input');\n  }\n\n  const protocol = header.slice(start, i);\n\n  if (protocols.has(protocol)) {\n    throw new SyntaxError(`The \"${protocol}\" subprotocol is duplicated`);\n  }\n\n  protocols.add(protocol);\n  return protocols;\n}\n\nmodule.exports = { parse };\n","'use strict';\n\nconst { isUtf8 } = require('buffer');\n\n//\n// Allowed token characters:\n//\n// '!', '#', '$', '%', '&', ''', '*', '+', '-',\n// '.', 0-9, A-Z, '^', '_', '`', a-z, '|', '~'\n//\n// tokenChars[32] === 0 // ' '\n// tokenChars[33] === 1 // '!'\n// tokenChars[34] === 0 // '\"'\n// ...\n//\n// prettier-ignore\nconst tokenChars = [\n  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15\n  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31\n  0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, // 32 - 47\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, // 48 - 63\n  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 64 - 79\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, // 80 - 95\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 96 - 111\n  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0 // 112 - 127\n];\n\n/**\n * Checks if a status code is allowed in a close frame.\n *\n * @param {Number} code The status code\n * @return {Boolean} `true` if the status code is valid, else `false`\n * @public\n */\nfunction isValidStatusCode(code) {\n  return (\n    (code >= 1000 &&\n      code <= 1014 &&\n      code !== 1004 &&\n      code !== 1005 &&\n      code !== 1006) ||\n    (code >= 3000 && code <= 4999)\n  );\n}\n\n/**\n * Checks if a given buffer contains only correct UTF-8.\n * Ported from https://www.cl.cam.ac.uk/%7Emgk25/ucs/utf8_check.c by\n * Markus Kuhn.\n *\n * @param {Buffer} buf The buffer to check\n * @return {Boolean} `true` if `buf` contains only correct UTF-8, else `false`\n * @public\n */\nfunction _isValidUTF8(buf) {\n  const len = buf.length;\n  let i = 0;\n\n  while (i < len) {\n    if ((buf[i] & 0x80) === 0) {\n      // 0xxxxxxx\n      i++;\n    } else if ((buf[i] & 0xe0) === 0xc0) {\n      // 110xxxxx 10xxxxxx\n      if (\n        i + 1 === len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i] & 0xfe) === 0xc0 // Overlong\n      ) {\n        return false;\n      }\n\n      i += 2;\n    } else if ((buf[i] & 0xf0) === 0xe0) {\n      // 1110xxxx 10xxxxxx 10xxxxxx\n      if (\n        i + 2 >= len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i + 2] & 0xc0) !== 0x80 ||\n        (buf[i] === 0xe0 && (buf[i + 1] & 0xe0) === 0x80) || // Overlong\n        (buf[i] === 0xed && (buf[i + 1] & 0xe0) === 0xa0) // Surrogate (U+D800 - U+DFFF)\n      ) {\n        return false;\n      }\n\n      i += 3;\n    } else if ((buf[i] & 0xf8) === 0xf0) {\n      // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx\n      if (\n        i + 3 >= len ||\n        (buf[i + 1] & 0xc0) !== 0x80 ||\n        (buf[i + 2] & 0xc0) !== 0x80 ||\n        (buf[i + 3] & 0xc0) !== 0x80 ||\n        (buf[i] === 0xf0 && (buf[i + 1] & 0xf0) === 0x80) || // Overlong\n        (buf[i] === 0xf4 && buf[i + 1] > 0x8f) ||\n        buf[i] > 0xf4 // > U+10FFFF\n      ) {\n        return false;\n      }\n\n      i += 4;\n    } else {\n      return false;\n    }\n  }\n\n  return true;\n}\n\nmodule.exports = {\n  isValidStatusCode,\n  isValidUTF8: _isValidUTF8,\n  tokenChars\n};\n\nif (isUtf8) {\n  module.exports.isValidUTF8 = function (buf) {\n    return buf.length < 24 ? _isValidUTF8(buf) : isUtf8(buf);\n  };\n} /* istanbul ignore else  */ else if (!process.env.WS_NO_UTF_8_VALIDATE) {\n  try {\n    const isValidUTF8 = require('utf-8-validate');\n\n    module.exports.isValidUTF8 = function (buf) {\n      return buf.length < 32 ? _isValidUTF8(buf) : isValidUTF8(buf);\n    };\n  } catch (e) {\n    // Continue regardless of the error.\n  }\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^net|tls|https$\" }] */\n\n'use strict';\n\nconst EventEmitter = require('events');\nconst http = require('http');\nconst https = require('https');\nconst net = require('net');\nconst tls = require('tls');\nconst { createHash } = require('crypto');\n\nconst extension = require('./extension');\nconst PerMessageDeflate = require('./permessage-deflate');\nconst subprotocol = require('./subprotocol');\nconst WebSocket = require('./websocket');\nconst { GUID, kWebSocket } = require('./constants');\n\nconst keyRegex = /^[+/0-9A-Za-z]{22}==$/;\n\nconst RUNNING = 0;\nconst CLOSING = 1;\nconst CLOSED = 2;\n\n/**\n * Class representing a WebSocket server.\n *\n * @extends EventEmitter\n */\nclass WebSocketServer extends EventEmitter {\n  /**\n   * Create a `WebSocketServer` instance.\n   *\n   * @param {Object} options Configuration options\n   * @param {Number} [options.backlog=511] The maximum length of the queue of\n   *     pending connections\n   * @param {Boolean} [options.clientTracking=true] Specifies whether or not to\n   *     track clients\n   * @param {Function} [options.handleProtocols] A hook to handle protocols\n   * @param {String} [options.host] The hostname where to bind the server\n   * @param {Number} [options.maxPayload=104857600] The maximum allowed message\n   *     size\n   * @param {Boolean} [options.noServer=false] Enable no server mode\n   * @param {String} [options.path] Accept only connections matching this path\n   * @param {(Boolean|Object)} [options.perMessageDeflate=false] Enable/disable\n   *     permessage-deflate\n   * @param {Number} [options.port] The port where to bind the server\n   * @param {(http.Server|https.Server)} [options.server] A pre-created HTTP/S\n   *     server to use\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   * @param {Function} [options.verifyClient] A hook to reject connections\n   * @param {Function} [options.WebSocket=WebSocket] Specifies the `WebSocket`\n   *     class to use. It must be the `WebSocket` class or class that extends it\n   * @param {Function} [callback] A listener for the `listening` event\n   */\n  constructor(options, callback) {\n    super();\n\n    options = {\n      maxPayload: 100 * 1024 * 1024,\n      skipUTF8Validation: false,\n      perMessageDeflate: false,\n      handleProtocols: null,\n      clientTracking: true,\n      verifyClient: null,\n      noServer: false,\n      backlog: null, // use default (511 as implemented in net.js)\n      server: null,\n      host: null,\n      path: null,\n      port: null,\n      WebSocket,\n      ...options\n    };\n\n    if (\n      (options.port == null && !options.server && !options.noServer) ||\n      (options.port != null && (options.server || options.noServer)) ||\n      (options.server && options.noServer)\n    ) {\n      throw new TypeError(\n        'One and only one of the \"port\", \"server\", or \"noServer\" options ' +\n          'must be specified'\n      );\n    }\n\n    if (options.port != null) {\n      this._server = http.createServer((req, res) => {\n        const body = http.STATUS_CODES[426];\n\n        res.writeHead(426, {\n          'Content-Length': body.length,\n          'Content-Type': 'text/plain'\n        });\n        res.end(body);\n      });\n      this._server.listen(\n        options.port,\n        options.host,\n        options.backlog,\n        callback\n      );\n    } else if (options.server) {\n      this._server = options.server;\n    }\n\n    if (this._server) {\n      const emitConnection = this.emit.bind(this, 'connection');\n\n      this._removeListeners = addListeners(this._server, {\n        listening: this.emit.bind(this, 'listening'),\n        error: this.emit.bind(this, 'error'),\n        upgrade: (req, socket, head) => {\n          this.handleUpgrade(req, socket, head, emitConnection);\n        }\n      });\n    }\n\n    if (options.perMessageDeflate === true) options.perMessageDeflate = {};\n    if (options.clientTracking) {\n      this.clients = new Set();\n      this._shouldEmitClose = false;\n    }\n\n    this.options = options;\n    this._state = RUNNING;\n  }\n\n  /**\n   * Returns the bound address, the address family name, and port of the server\n   * as reported by the operating system if listening on an IP socket.\n   * If the server is listening on a pipe or UNIX domain socket, the name is\n   * returned as a string.\n   *\n   * @return {(Object|String|null)} The address of the server\n   * @public\n   */\n  address() {\n    if (this.options.noServer) {\n      throw new Error('The server is operating in \"noServer\" mode');\n    }\n\n    if (!this._server) return null;\n    return this._server.address();\n  }\n\n  /**\n   * Stop the server from accepting new connections and emit the `'close'` event\n   * when all existing connections are closed.\n   *\n   * @param {Function} [cb] A one-time listener for the `'close'` event\n   * @public\n   */\n  close(cb) {\n    if (this._state === CLOSED) {\n      if (cb) {\n        this.once('close', () => {\n          cb(new Error('The server is not running'));\n        });\n      }\n\n      process.nextTick(emitClose, this);\n      return;\n    }\n\n    if (cb) this.once('close', cb);\n\n    if (this._state === CLOSING) return;\n    this._state = CLOSING;\n\n    if (this.options.noServer || this.options.server) {\n      if (this._server) {\n        this._removeListeners();\n        this._removeListeners = this._server = null;\n      }\n\n      if (this.clients) {\n        if (!this.clients.size) {\n          process.nextTick(emitClose, this);\n        } else {\n          this._shouldEmitClose = true;\n        }\n      } else {\n        process.nextTick(emitClose, this);\n      }\n    } else {\n      const server = this._server;\n\n      this._removeListeners();\n      this._removeListeners = this._server = null;\n\n      //\n      // The HTTP/S server was created internally. Close it, and rely on its\n      // `'close'` event.\n      //\n      server.close(() => {\n        emitClose(this);\n      });\n    }\n  }\n\n  /**\n   * See if a given request should be handled by this server instance.\n   *\n   * @param {http.IncomingMessage} req Request object to inspect\n   * @return {Boolean} `true` if the request is valid, else `false`\n   * @public\n   */\n  shouldHandle(req) {\n    if (this.options.path) {\n      const index = req.url.indexOf('?');\n      const pathname = index !== -1 ? req.url.slice(0, index) : req.url;\n\n      if (pathname !== this.options.path) return false;\n    }\n\n    return true;\n  }\n\n  /**\n   * Handle a HTTP Upgrade request.\n   *\n   * @param {http.IncomingMessage} req The request object\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Function} cb Callback\n   * @public\n   */\n  handleUpgrade(req, socket, head, cb) {\n    socket.on('error', socketOnError);\n\n    const key = req.headers['sec-websocket-key'];\n    const version = +req.headers['sec-websocket-version'];\n\n    if (req.method !== 'GET') {\n      const message = 'Invalid HTTP method';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 405, message);\n      return;\n    }\n\n    if (req.headers.upgrade.toLowerCase() !== 'websocket') {\n      const message = 'Invalid Upgrade header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (!key || !keyRegex.test(key)) {\n      const message = 'Missing or invalid Sec-WebSocket-Key header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (version !== 8 && version !== 13) {\n      const message = 'Missing or invalid Sec-WebSocket-Version header';\n      abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n      return;\n    }\n\n    if (!this.shouldHandle(req)) {\n      abortHandshake(socket, 400);\n      return;\n    }\n\n    const secWebSocketProtocol = req.headers['sec-websocket-protocol'];\n    let protocols = new Set();\n\n    if (secWebSocketProtocol !== undefined) {\n      try {\n        protocols = subprotocol.parse(secWebSocketProtocol);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Protocol header';\n        abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n        return;\n      }\n    }\n\n    const secWebSocketExtensions = req.headers['sec-websocket-extensions'];\n    const extensions = {};\n\n    if (\n      this.options.perMessageDeflate &&\n      secWebSocketExtensions !== undefined\n    ) {\n      const perMessageDeflate = new PerMessageDeflate(\n        this.options.perMessageDeflate,\n        true,\n        this.options.maxPayload\n      );\n\n      try {\n        const offers = extension.parse(secWebSocketExtensions);\n\n        if (offers[PerMessageDeflate.extensionName]) {\n          perMessageDeflate.accept(offers[PerMessageDeflate.extensionName]);\n          extensions[PerMessageDeflate.extensionName] = perMessageDeflate;\n        }\n      } catch (err) {\n        const message =\n          'Invalid or unacceptable Sec-WebSocket-Extensions header';\n        abortHandshakeOrEmitwsClientError(this, req, socket, 400, message);\n        return;\n      }\n    }\n\n    //\n    // Optionally call external client verification handler.\n    //\n    if (this.options.verifyClient) {\n      const info = {\n        origin:\n          req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],\n        secure: !!(req.socket.authorized || req.socket.encrypted),\n        req\n      };\n\n      if (this.options.verifyClient.length === 2) {\n        this.options.verifyClient(info, (verified, code, message, headers) => {\n          if (!verified) {\n            return abortHandshake(socket, code || 401, message, headers);\n          }\n\n          this.completeUpgrade(\n            extensions,\n            key,\n            protocols,\n            req,\n            socket,\n            head,\n            cb\n          );\n        });\n        return;\n      }\n\n      if (!this.options.verifyClient(info)) return abortHandshake(socket, 401);\n    }\n\n    this.completeUpgrade(extensions, key, protocols, req, socket, head, cb);\n  }\n\n  /**\n   * Upgrade the connection to WebSocket.\n   *\n   * @param {Object} extensions The accepted extensions\n   * @param {String} key The value of the `Sec-WebSocket-Key` header\n   * @param {Set} protocols The subprotocols\n   * @param {http.IncomingMessage} req The request object\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Function} cb Callback\n   * @throws {Error} If called more than once with the same socket\n   * @private\n   */\n  completeUpgrade(extensions, key, protocols, req, socket, head, cb) {\n    //\n    // Destroy the socket if the client has already sent a FIN packet.\n    //\n    if (!socket.readable || !socket.writable) return socket.destroy();\n\n    if (socket[kWebSocket]) {\n      throw new Error(\n        'server.handleUpgrade() was called more than once with the same ' +\n          'socket, possibly due to a misconfiguration'\n      );\n    }\n\n    if (this._state > RUNNING) return abortHandshake(socket, 503);\n\n    const digest = createHash('sha1')\n      .update(key + GUID)\n      .digest('base64');\n\n    const headers = [\n      'HTTP/1.1 101 Switching Protocols',\n      'Upgrade: websocket',\n      'Connection: Upgrade',\n      `Sec-WebSocket-Accept: ${digest}`\n    ];\n\n    const ws = new this.options.WebSocket(null);\n\n    if (protocols.size) {\n      //\n      // Optionally call external protocol selection handler.\n      //\n      const protocol = this.options.handleProtocols\n        ? this.options.handleProtocols(protocols, req)\n        : protocols.values().next().value;\n\n      if (protocol) {\n        headers.push(`Sec-WebSocket-Protocol: ${protocol}`);\n        ws._protocol = protocol;\n      }\n    }\n\n    if (extensions[PerMessageDeflate.extensionName]) {\n      const params = extensions[PerMessageDeflate.extensionName].params;\n      const value = extension.format({\n        [PerMessageDeflate.extensionName]: [params]\n      });\n      headers.push(`Sec-WebSocket-Extensions: ${value}`);\n      ws._extensions = extensions;\n    }\n\n    //\n    // Allow external modification/inspection of handshake headers.\n    //\n    this.emit('headers', headers, req);\n\n    socket.write(headers.concat('\\r\\n').join('\\r\\n'));\n    socket.removeListener('error', socketOnError);\n\n    ws.setSocket(socket, head, {\n      maxPayload: this.options.maxPayload,\n      skipUTF8Validation: this.options.skipUTF8Validation\n    });\n\n    if (this.clients) {\n      this.clients.add(ws);\n      ws.on('close', () => {\n        this.clients.delete(ws);\n\n        if (this._shouldEmitClose && !this.clients.size) {\n          process.nextTick(emitClose, this);\n        }\n      });\n    }\n\n    cb(ws, req);\n  }\n}\n\nmodule.exports = WebSocketServer;\n\n/**\n * Add event listeners on an `EventEmitter` using a map of <event, listener>\n * pairs.\n *\n * @param {EventEmitter} server The event emitter\n * @param {Object.<String, Function>} map The listeners to add\n * @return {Function} A function that will remove the added listeners when\n *     called\n * @private\n */\nfunction addListeners(server, map) {\n  for (const event of Object.keys(map)) server.on(event, map[event]);\n\n  return function removeListeners() {\n    for (const event of Object.keys(map)) {\n      server.removeListener(event, map[event]);\n    }\n  };\n}\n\n/**\n * Emit a `'close'` event on an `EventEmitter`.\n *\n * @param {EventEmitter} server The event emitter\n * @private\n */\nfunction emitClose(server) {\n  server._state = CLOSED;\n  server.emit('close');\n}\n\n/**\n * Handle socket errors.\n *\n * @private\n */\nfunction socketOnError() {\n  this.destroy();\n}\n\n/**\n * Close the connection when preconditions are not fulfilled.\n *\n * @param {(net.Socket|tls.Socket)} socket The socket of the upgrade request\n * @param {Number} code The HTTP response status code\n * @param {String} [message] The HTTP response body\n * @param {Object} [headers] Additional HTTP response headers\n * @private\n */\nfunction abortHandshake(socket, code, message, headers) {\n  //\n  // The socket is writable unless the user destroyed or ended it before calling\n  // `server.handleUpgrade()` or in the `verifyClient` function, which is a user\n  // error. Handling this does not make much sense as the worst that can happen\n  // is that some of the data written by the user might be discarded due to the\n  // call to `socket.end()` below, which triggers an `'error'` event that in\n  // turn causes the socket to be destroyed.\n  //\n  message = message || http.STATUS_CODES[code];\n  headers = {\n    Connection: 'close',\n    'Content-Type': 'text/html',\n    'Content-Length': Buffer.byteLength(message),\n    ...headers\n  };\n\n  socket.once('finish', socket.destroy);\n\n  socket.end(\n    `HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\\r\\n` +\n      Object.keys(headers)\n        .map((h) => `${h}: ${headers[h]}`)\n        .join('\\r\\n') +\n      '\\r\\n\\r\\n' +\n      message\n  );\n}\n\n/**\n * Emit a `'wsClientError'` event on a `WebSocketServer` if there is at least\n * one listener for it, otherwise call `abortHandshake()`.\n *\n * @param {WebSocketServer} server The WebSocket server\n * @param {http.IncomingMessage} req The request object\n * @param {(net.Socket|tls.Socket)} socket The socket of the upgrade request\n * @param {Number} code The HTTP response status code\n * @param {String} message The HTTP response body\n * @private\n */\nfunction abortHandshakeOrEmitwsClientError(server, req, socket, code, message) {\n  if (server.listenerCount('wsClientError')) {\n    const err = new Error(message);\n    Error.captureStackTrace(err, abortHandshakeOrEmitwsClientError);\n\n    server.emit('wsClientError', err, socket, req);\n  } else {\n    abortHandshake(socket, code, message);\n  }\n}\n","/* eslint no-unused-vars: [\"error\", { \"varsIgnorePattern\": \"^Readable$\" }] */\n\n'use strict';\n\nconst EventEmitter = require('events');\nconst https = require('https');\nconst http = require('http');\nconst net = require('net');\nconst tls = require('tls');\nconst { randomBytes, createHash } = require('crypto');\nconst { Readable } = require('stream');\nconst { URL } = require('url');\n\nconst PerMessageDeflate = require('./permessage-deflate');\nconst Receiver = require('./receiver');\nconst Sender = require('./sender');\nconst {\n  BINARY_TYPES,\n  EMPTY_BUFFER,\n  GUID,\n  kForOnEventAttribute,\n  kListener,\n  kStatusCode,\n  kWebSocket,\n  NOOP\n} = require('./constants');\nconst {\n  EventTarget: { addEventListener, removeEventListener }\n} = require('./event-target');\nconst { format, parse } = require('./extension');\nconst { toBuffer } = require('./buffer-util');\n\nconst closeTimeout = 30 * 1000;\nconst kAborted = Symbol('kAborted');\nconst protocolVersions = [8, 13];\nconst readyStates = ['CONNECTING', 'OPEN', 'CLOSING', 'CLOSED'];\nconst subprotocolRegex = /^[!#$%&'*+\\-.0-9A-Z^_`|a-z~]+$/;\n\n/**\n * Class representing a WebSocket.\n *\n * @extends EventEmitter\n */\nclass WebSocket extends EventEmitter {\n  /**\n   * Create a new `WebSocket`.\n   *\n   * @param {(String|URL)} address The URL to which to connect\n   * @param {(String|String[])} [protocols] The subprotocols\n   * @param {Object} [options] Connection options\n   */\n  constructor(address, protocols, options) {\n    super();\n\n    this._binaryType = BINARY_TYPES[0];\n    this._closeCode = 1006;\n    this._closeFrameReceived = false;\n    this._closeFrameSent = false;\n    this._closeMessage = EMPTY_BUFFER;\n    this._closeTimer = null;\n    this._extensions = {};\n    this._paused = false;\n    this._protocol = '';\n    this._readyState = WebSocket.CONNECTING;\n    this._receiver = null;\n    this._sender = null;\n    this._socket = null;\n\n    if (address !== null) {\n      this._bufferedAmount = 0;\n      this._isServer = false;\n      this._redirects = 0;\n\n      if (protocols === undefined) {\n        protocols = [];\n      } else if (!Array.isArray(protocols)) {\n        if (typeof protocols === 'object' && protocols !== null) {\n          options = protocols;\n          protocols = [];\n        } else {\n          protocols = [protocols];\n        }\n      }\n\n      initAsClient(this, address, protocols, options);\n    } else {\n      this._isServer = true;\n    }\n  }\n\n  /**\n   * This deviates from the WHATWG interface since ws doesn't support the\n   * required default \"blob\" type (instead we define a custom \"nodebuffer\"\n   * type).\n   *\n   * @type {String}\n   */\n  get binaryType() {\n    return this._binaryType;\n  }\n\n  set binaryType(type) {\n    if (!BINARY_TYPES.includes(type)) return;\n\n    this._binaryType = type;\n\n    //\n    // Allow to change `binaryType` on the fly.\n    //\n    if (this._receiver) this._receiver._binaryType = type;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get bufferedAmount() {\n    if (!this._socket) return this._bufferedAmount;\n\n    return this._socket._writableState.length + this._sender._bufferedBytes;\n  }\n\n  /**\n   * @type {String}\n   */\n  get extensions() {\n    return Object.keys(this._extensions).join();\n  }\n\n  /**\n   * @type {Boolean}\n   */\n  get isPaused() {\n    return this._paused;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onclose() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onerror() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onopen() {\n    return null;\n  }\n\n  /**\n   * @type {Function}\n   */\n  /* istanbul ignore next */\n  get onmessage() {\n    return null;\n  }\n\n  /**\n   * @type {String}\n   */\n  get protocol() {\n    return this._protocol;\n  }\n\n  /**\n   * @type {Number}\n   */\n  get readyState() {\n    return this._readyState;\n  }\n\n  /**\n   * @type {String}\n   */\n  get url() {\n    return this._url;\n  }\n\n  /**\n   * Set up the socket and the internal resources.\n   *\n   * @param {(net.Socket|tls.Socket)} socket The network socket between the\n   *     server and client\n   * @param {Buffer} head The first packet of the upgraded stream\n   * @param {Object} options Options object\n   * @param {Function} [options.generateMask] The function used to generate the\n   *     masking key\n   * @param {Number} [options.maxPayload=0] The maximum allowed message size\n   * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n   *     not to skip UTF-8 validation for text and close messages\n   * @private\n   */\n  setSocket(socket, head, options) {\n    const receiver = new Receiver({\n      binaryType: this.binaryType,\n      extensions: this._extensions,\n      isServer: this._isServer,\n      maxPayload: options.maxPayload,\n      skipUTF8Validation: options.skipUTF8Validation\n    });\n\n    this._sender = new Sender(socket, this._extensions, options.generateMask);\n    this._receiver = receiver;\n    this._socket = socket;\n\n    receiver[kWebSocket] = this;\n    socket[kWebSocket] = this;\n\n    receiver.on('conclude', receiverOnConclude);\n    receiver.on('drain', receiverOnDrain);\n    receiver.on('error', receiverOnError);\n    receiver.on('message', receiverOnMessage);\n    receiver.on('ping', receiverOnPing);\n    receiver.on('pong', receiverOnPong);\n\n    socket.setTimeout(0);\n    socket.setNoDelay();\n\n    if (head.length > 0) socket.unshift(head);\n\n    socket.on('close', socketOnClose);\n    socket.on('data', socketOnData);\n    socket.on('end', socketOnEnd);\n    socket.on('error', socketOnError);\n\n    this._readyState = WebSocket.OPEN;\n    this.emit('open');\n  }\n\n  /**\n   * Emit the `'close'` event.\n   *\n   * @private\n   */\n  emitClose() {\n    if (!this._socket) {\n      this._readyState = WebSocket.CLOSED;\n      this.emit('close', this._closeCode, this._closeMessage);\n      return;\n    }\n\n    if (this._extensions[PerMessageDeflate.extensionName]) {\n      this._extensions[PerMessageDeflate.extensionName].cleanup();\n    }\n\n    this._receiver.removeAllListeners();\n    this._readyState = WebSocket.CLOSED;\n    this.emit('close', this._closeCode, this._closeMessage);\n  }\n\n  /**\n   * Start a closing handshake.\n   *\n   *          +----------+   +-----------+   +----------+\n   *     - - -|ws.close()|-->|close frame|-->|ws.close()|- - -\n   *    |     +----------+   +-----------+   +----------+     |\n   *          +----------+   +-----------+         |\n   * CLOSING  |ws.close()|<--|close frame|<--+-----+       CLOSING\n   *          +----------+   +-----------+   |\n   *    |           |                        |   +---+        |\n   *                +------------------------+-->|fin| - - - -\n   *    |         +---+                      |   +---+\n   *     - - - - -|fin|<---------------------+\n   *              +---+\n   *\n   * @param {Number} [code] Status code explaining why the connection is closing\n   * @param {(String|Buffer)} [data] The reason why the connection is\n   *     closing\n   * @public\n   */\n  close(code, data) {\n    if (this.readyState === WebSocket.CLOSED) return;\n    if (this.readyState === WebSocket.CONNECTING) {\n      const msg = 'WebSocket was closed before the connection was established';\n      abortHandshake(this, this._req, msg);\n      return;\n    }\n\n    if (this.readyState === WebSocket.CLOSING) {\n      if (\n        this._closeFrameSent &&\n        (this._closeFrameReceived || this._receiver._writableState.errorEmitted)\n      ) {\n        this._socket.end();\n      }\n\n      return;\n    }\n\n    this._readyState = WebSocket.CLOSING;\n    this._sender.close(code, data, !this._isServer, (err) => {\n      //\n      // This error is handled by the `'error'` listener on the socket. We only\n      // want to know if the close frame has been sent here.\n      //\n      if (err) return;\n\n      this._closeFrameSent = true;\n\n      if (\n        this._closeFrameReceived ||\n        this._receiver._writableState.errorEmitted\n      ) {\n        this._socket.end();\n      }\n    });\n\n    //\n    // Specify a timeout for the closing handshake to complete.\n    //\n    this._closeTimer = setTimeout(\n      this._socket.destroy.bind(this._socket),\n      closeTimeout\n    );\n  }\n\n  /**\n   * Pause the socket.\n   *\n   * @public\n   */\n  pause() {\n    if (\n      this.readyState === WebSocket.CONNECTING ||\n      this.readyState === WebSocket.CLOSED\n    ) {\n      return;\n    }\n\n    this._paused = true;\n    this._socket.pause();\n  }\n\n  /**\n   * Send a ping.\n   *\n   * @param {*} [data] The data to send\n   * @param {Boolean} [mask] Indicates whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when the ping is sent\n   * @public\n   */\n  ping(data, mask, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof data === 'function') {\n      cb = data;\n      data = mask = undefined;\n    } else if (typeof mask === 'function') {\n      cb = mask;\n      mask = undefined;\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    if (mask === undefined) mask = !this._isServer;\n    this._sender.ping(data || EMPTY_BUFFER, mask, cb);\n  }\n\n  /**\n   * Send a pong.\n   *\n   * @param {*} [data] The data to send\n   * @param {Boolean} [mask] Indicates whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when the pong is sent\n   * @public\n   */\n  pong(data, mask, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof data === 'function') {\n      cb = data;\n      data = mask = undefined;\n    } else if (typeof mask === 'function') {\n      cb = mask;\n      mask = undefined;\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    if (mask === undefined) mask = !this._isServer;\n    this._sender.pong(data || EMPTY_BUFFER, mask, cb);\n  }\n\n  /**\n   * Resume the socket.\n   *\n   * @public\n   */\n  resume() {\n    if (\n      this.readyState === WebSocket.CONNECTING ||\n      this.readyState === WebSocket.CLOSED\n    ) {\n      return;\n    }\n\n    this._paused = false;\n    if (!this._receiver._writableState.needDrain) this._socket.resume();\n  }\n\n  /**\n   * Send a data message.\n   *\n   * @param {*} data The message to send\n   * @param {Object} [options] Options object\n   * @param {Boolean} [options.binary] Specifies whether `data` is binary or\n   *     text\n   * @param {Boolean} [options.compress] Specifies whether or not to compress\n   *     `data`\n   * @param {Boolean} [options.fin=true] Specifies whether the fragment is the\n   *     last one\n   * @param {Boolean} [options.mask] Specifies whether or not to mask `data`\n   * @param {Function} [cb] Callback which is executed when data is written out\n   * @public\n   */\n  send(data, options, cb) {\n    if (this.readyState === WebSocket.CONNECTING) {\n      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');\n    }\n\n    if (typeof options === 'function') {\n      cb = options;\n      options = {};\n    }\n\n    if (typeof data === 'number') data = data.toString();\n\n    if (this.readyState !== WebSocket.OPEN) {\n      sendAfterClose(this, data, cb);\n      return;\n    }\n\n    const opts = {\n      binary: typeof data !== 'string',\n      mask: !this._isServer,\n      compress: true,\n      fin: true,\n      ...options\n    };\n\n    if (!this._extensions[PerMessageDeflate.extensionName]) {\n      opts.compress = false;\n    }\n\n    this._sender.send(data || EMPTY_BUFFER, opts, cb);\n  }\n\n  /**\n   * Forcibly close the connection.\n   *\n   * @public\n   */\n  terminate() {\n    if (this.readyState === WebSocket.CLOSED) return;\n    if (this.readyState === WebSocket.CONNECTING) {\n      const msg = 'WebSocket was closed before the connection was established';\n      abortHandshake(this, this._req, msg);\n      return;\n    }\n\n    if (this._socket) {\n      this._readyState = WebSocket.CLOSING;\n      this._socket.destroy();\n    }\n  }\n}\n\n/**\n * @constant {Number} CONNECTING\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CONNECTING', {\n  enumerable: true,\n  value: readyStates.indexOf('CONNECTING')\n});\n\n/**\n * @constant {Number} CONNECTING\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CONNECTING', {\n  enumerable: true,\n  value: readyStates.indexOf('CONNECTING')\n});\n\n/**\n * @constant {Number} OPEN\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'OPEN', {\n  enumerable: true,\n  value: readyStates.indexOf('OPEN')\n});\n\n/**\n * @constant {Number} OPEN\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'OPEN', {\n  enumerable: true,\n  value: readyStates.indexOf('OPEN')\n});\n\n/**\n * @constant {Number} CLOSING\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CLOSING', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSING')\n});\n\n/**\n * @constant {Number} CLOSING\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CLOSING', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSING')\n});\n\n/**\n * @constant {Number} CLOSED\n * @memberof WebSocket\n */\nObject.defineProperty(WebSocket, 'CLOSED', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSED')\n});\n\n/**\n * @constant {Number} CLOSED\n * @memberof WebSocket.prototype\n */\nObject.defineProperty(WebSocket.prototype, 'CLOSED', {\n  enumerable: true,\n  value: readyStates.indexOf('CLOSED')\n});\n\n[\n  'binaryType',\n  'bufferedAmount',\n  'extensions',\n  'isPaused',\n  'protocol',\n  'readyState',\n  'url'\n].forEach((property) => {\n  Object.defineProperty(WebSocket.prototype, property, { enumerable: true });\n});\n\n//\n// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.\n// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface\n//\n['open', 'error', 'close', 'message'].forEach((method) => {\n  Object.defineProperty(WebSocket.prototype, `on${method}`, {\n    enumerable: true,\n    get() {\n      for (const listener of this.listeners(method)) {\n        if (listener[kForOnEventAttribute]) return listener[kListener];\n      }\n\n      return null;\n    },\n    set(handler) {\n      for (const listener of this.listeners(method)) {\n        if (listener[kForOnEventAttribute]) {\n          this.removeListener(method, listener);\n          break;\n        }\n      }\n\n      if (typeof handler !== 'function') return;\n\n      this.addEventListener(method, handler, {\n        [kForOnEventAttribute]: true\n      });\n    }\n  });\n});\n\nWebSocket.prototype.addEventListener = addEventListener;\nWebSocket.prototype.removeEventListener = removeEventListener;\n\nmodule.exports = WebSocket;\n\n/**\n * Initialize a WebSocket client.\n *\n * @param {WebSocket} websocket The client to initialize\n * @param {(String|URL)} address The URL to which to connect\n * @param {Array} protocols The subprotocols\n * @param {Object} [options] Connection options\n * @param {Boolean} [options.followRedirects=false] Whether or not to follow\n *     redirects\n * @param {Function} [options.generateMask] The function used to generate the\n *     masking key\n * @param {Number} [options.handshakeTimeout] Timeout in milliseconds for the\n *     handshake request\n * @param {Number} [options.maxPayload=104857600] The maximum allowed message\n *     size\n * @param {Number} [options.maxRedirects=10] The maximum number of redirects\n *     allowed\n * @param {String} [options.origin] Value of the `Origin` or\n *     `Sec-WebSocket-Origin` header\n * @param {(Boolean|Object)} [options.perMessageDeflate=true] Enable/disable\n *     permessage-deflate\n * @param {Number} [options.protocolVersion=13] Value of the\n *     `Sec-WebSocket-Version` header\n * @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or\n *     not to skip UTF-8 validation for text and close messages\n * @private\n */\nfunction initAsClient(websocket, address, protocols, options) {\n  const opts = {\n    protocolVersion: protocolVersions[1],\n    maxPayload: 100 * 1024 * 1024,\n    skipUTF8Validation: false,\n    perMessageDeflate: true,\n    followRedirects: false,\n    maxRedirects: 10,\n    ...options,\n    createConnection: undefined,\n    socketPath: undefined,\n    hostname: undefined,\n    protocol: undefined,\n    timeout: undefined,\n    method: 'GET',\n    host: undefined,\n    path: undefined,\n    port: undefined\n  };\n\n  if (!protocolVersions.includes(opts.protocolVersion)) {\n    throw new RangeError(\n      `Unsupported protocol version: ${opts.protocolVersion} ` +\n        `(supported versions: ${protocolVersions.join(', ')})`\n    );\n  }\n\n  let parsedUrl;\n\n  if (address instanceof URL) {\n    parsedUrl = address;\n    websocket._url = address.href;\n  } else {\n    try {\n      parsedUrl = new URL(address);\n    } catch (e) {\n      throw new SyntaxError(`Invalid URL: ${address}`);\n    }\n\n    websocket._url = address;\n  }\n\n  const isSecure = parsedUrl.protocol === 'wss:';\n  const isIpcUrl = parsedUrl.protocol === 'ws+unix:';\n  let invalidUrlMessage;\n\n  if (parsedUrl.protocol !== 'ws:' && !isSecure && !isIpcUrl) {\n    invalidUrlMessage =\n      'The URL\\'s protocol must be one of \"ws:\", \"wss:\", or \"ws+unix:\"';\n  } else if (isIpcUrl && !parsedUrl.pathname) {\n    invalidUrlMessage = \"The URL's pathname is empty\";\n  } else if (parsedUrl.hash) {\n    invalidUrlMessage = 'The URL contains a fragment identifier';\n  }\n\n  if (invalidUrlMessage) {\n    const err = new SyntaxError(invalidUrlMessage);\n\n    if (websocket._redirects === 0) {\n      throw err;\n    } else {\n      emitErrorAndClose(websocket, err);\n      return;\n    }\n  }\n\n  const defaultPort = isSecure ? 443 : 80;\n  const key = randomBytes(16).toString('base64');\n  const request = isSecure ? https.request : http.request;\n  const protocolSet = new Set();\n  let perMessageDeflate;\n\n  opts.createConnection = isSecure ? tlsConnect : netConnect;\n  opts.defaultPort = opts.defaultPort || defaultPort;\n  opts.port = parsedUrl.port || defaultPort;\n  opts.host = parsedUrl.hostname.startsWith('[')\n    ? parsedUrl.hostname.slice(1, -1)\n    : parsedUrl.hostname;\n  opts.headers = {\n    ...opts.headers,\n    'Sec-WebSocket-Version': opts.protocolVersion,\n    'Sec-WebSocket-Key': key,\n    Connection: 'Upgrade',\n    Upgrade: 'websocket'\n  };\n  opts.path = parsedUrl.pathname + parsedUrl.search;\n  opts.timeout = opts.handshakeTimeout;\n\n  if (opts.perMessageDeflate) {\n    perMessageDeflate = new PerMessageDeflate(\n      opts.perMessageDeflate !== true ? opts.perMessageDeflate : {},\n      false,\n      opts.maxPayload\n    );\n    opts.headers['Sec-WebSocket-Extensions'] = format({\n      [PerMessageDeflate.extensionName]: perMessageDeflate.offer()\n    });\n  }\n  if (protocols.length) {\n    for (const protocol of protocols) {\n      if (\n        typeof protocol !== 'string' ||\n        !subprotocolRegex.test(protocol) ||\n        protocolSet.has(protocol)\n      ) {\n        throw new SyntaxError(\n          'An invalid or duplicated subprotocol was specified'\n        );\n      }\n\n      protocolSet.add(protocol);\n    }\n\n    opts.headers['Sec-WebSocket-Protocol'] = protocols.join(',');\n  }\n  if (opts.origin) {\n    if (opts.protocolVersion < 13) {\n      opts.headers['Sec-WebSocket-Origin'] = opts.origin;\n    } else {\n      opts.headers.Origin = opts.origin;\n    }\n  }\n  if (parsedUrl.username || parsedUrl.password) {\n    opts.auth = `${parsedUrl.username}:${parsedUrl.password}`;\n  }\n\n  if (isIpcUrl) {\n    const parts = opts.path.split(':');\n\n    opts.socketPath = parts[0];\n    opts.path = parts[1];\n  }\n\n  let req;\n\n  if (opts.followRedirects) {\n    if (websocket._redirects === 0) {\n      websocket._originalIpc = isIpcUrl;\n      websocket._originalSecure = isSecure;\n      websocket._originalHostOrSocketPath = isIpcUrl\n        ? opts.socketPath\n        : parsedUrl.host;\n\n      const headers = options && options.headers;\n\n      //\n      // Shallow copy the user provided options so that headers can be changed\n      // without mutating the original object.\n      //\n      options = { ...options, headers: {} };\n\n      if (headers) {\n        for (const [key, value] of Object.entries(headers)) {\n          options.headers[key.toLowerCase()] = value;\n        }\n      }\n    } else if (websocket.listenerCount('redirect') === 0) {\n      const isSameHost = isIpcUrl\n        ? websocket._originalIpc\n          ? opts.socketPath === websocket._originalHostOrSocketPath\n          : false\n        : websocket._originalIpc\n        ? false\n        : parsedUrl.host === websocket._originalHostOrSocketPath;\n\n      if (!isSameHost || (websocket._originalSecure && !isSecure)) {\n        //\n        // Match curl 7.77.0 behavior and drop the following headers. These\n        // headers are also dropped when following a redirect to a subdomain.\n        //\n        delete opts.headers.authorization;\n        delete opts.headers.cookie;\n\n        if (!isSameHost) delete opts.headers.host;\n\n        opts.auth = undefined;\n      }\n    }\n\n    //\n    // Match curl 7.77.0 behavior and make the first `Authorization` header win.\n    // If the `Authorization` header is set, then there is nothing to do as it\n    // will take precedence.\n    //\n    if (opts.auth && !options.headers.authorization) {\n      options.headers.authorization =\n        'Basic ' + Buffer.from(opts.auth).toString('base64');\n    }\n\n    req = websocket._req = request(opts);\n\n    if (websocket._redirects) {\n      //\n      // Unlike what is done for the `'upgrade'` event, no early exit is\n      // triggered here if the user calls `websocket.close()` or\n      // `websocket.terminate()` from a listener of the `'redirect'` event. This\n      // is because the user can also call `request.destroy()` with an error\n      // before calling `websocket.close()` or `websocket.terminate()` and this\n      // would result in an error being emitted on the `request` object with no\n      // `'error'` event listeners attached.\n      //\n      websocket.emit('redirect', websocket.url, req);\n    }\n  } else {\n    req = websocket._req = request(opts);\n  }\n\n  if (opts.timeout) {\n    req.on('timeout', () => {\n      abortHandshake(websocket, req, 'Opening handshake has timed out');\n    });\n  }\n\n  req.on('error', (err) => {\n    if (req === null || req[kAborted]) return;\n\n    req = websocket._req = null;\n    emitErrorAndClose(websocket, err);\n  });\n\n  req.on('response', (res) => {\n    const location = res.headers.location;\n    const statusCode = res.statusCode;\n\n    if (\n      location &&\n      opts.followRedirects &&\n      statusCode >= 300 &&\n      statusCode < 400\n    ) {\n      if (++websocket._redirects > opts.maxRedirects) {\n        abortHandshake(websocket, req, 'Maximum redirects exceeded');\n        return;\n      }\n\n      req.abort();\n\n      let addr;\n\n      try {\n        addr = new URL(location, address);\n      } catch (e) {\n        const err = new SyntaxError(`Invalid URL: ${location}`);\n        emitErrorAndClose(websocket, err);\n        return;\n      }\n\n      initAsClient(websocket, addr, protocols, options);\n    } else if (!websocket.emit('unexpected-response', req, res)) {\n      abortHandshake(\n        websocket,\n        req,\n        `Unexpected server response: ${res.statusCode}`\n      );\n    }\n  });\n\n  req.on('upgrade', (res, socket, head) => {\n    websocket.emit('upgrade', res);\n\n    //\n    // The user may have closed the connection from a listener of the\n    // `'upgrade'` event.\n    //\n    if (websocket.readyState !== WebSocket.CONNECTING) return;\n\n    req = websocket._req = null;\n\n    if (res.headers.upgrade.toLowerCase() !== 'websocket') {\n      abortHandshake(websocket, socket, 'Invalid Upgrade header');\n      return;\n    }\n\n    const digest = createHash('sha1')\n      .update(key + GUID)\n      .digest('base64');\n\n    if (res.headers['sec-websocket-accept'] !== digest) {\n      abortHandshake(websocket, socket, 'Invalid Sec-WebSocket-Accept header');\n      return;\n    }\n\n    const serverProt = res.headers['sec-websocket-protocol'];\n    let protError;\n\n    if (serverProt !== undefined) {\n      if (!protocolSet.size) {\n        protError = 'Server sent a subprotocol but none was requested';\n      } else if (!protocolSet.has(serverProt)) {\n        protError = 'Server sent an invalid subprotocol';\n      }\n    } else if (protocolSet.size) {\n      protError = 'Server sent no subprotocol';\n    }\n\n    if (protError) {\n      abortHandshake(websocket, socket, protError);\n      return;\n    }\n\n    if (serverProt) websocket._protocol = serverProt;\n\n    const secWebSocketExtensions = res.headers['sec-websocket-extensions'];\n\n    if (secWebSocketExtensions !== undefined) {\n      if (!perMessageDeflate) {\n        const message =\n          'Server sent a Sec-WebSocket-Extensions header but no extension ' +\n          'was requested';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      let extensions;\n\n      try {\n        extensions = parse(secWebSocketExtensions);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Extensions header';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      const extensionNames = Object.keys(extensions);\n\n      if (\n        extensionNames.length !== 1 ||\n        extensionNames[0] !== PerMessageDeflate.extensionName\n      ) {\n        const message = 'Server indicated an extension that was not requested';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      try {\n        perMessageDeflate.accept(extensions[PerMessageDeflate.extensionName]);\n      } catch (err) {\n        const message = 'Invalid Sec-WebSocket-Extensions header';\n        abortHandshake(websocket, socket, message);\n        return;\n      }\n\n      websocket._extensions[PerMessageDeflate.extensionName] =\n        perMessageDeflate;\n    }\n\n    websocket.setSocket(socket, head, {\n      generateMask: opts.generateMask,\n      maxPayload: opts.maxPayload,\n      skipUTF8Validation: opts.skipUTF8Validation\n    });\n  });\n\n  req.end();\n}\n\n/**\n * Emit the `'error'` and `'close'` events.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {Error} The error to emit\n * @private\n */\nfunction emitErrorAndClose(websocket, err) {\n  websocket._readyState = WebSocket.CLOSING;\n  websocket.emit('error', err);\n  websocket.emitClose();\n}\n\n/**\n * Create a `net.Socket` and initiate a connection.\n *\n * @param {Object} options Connection options\n * @return {net.Socket} The newly created socket used to start the connection\n * @private\n */\nfunction netConnect(options) {\n  options.path = options.socketPath;\n  return net.connect(options);\n}\n\n/**\n * Create a `tls.TLSSocket` and initiate a connection.\n *\n * @param {Object} options Connection options\n * @return {tls.TLSSocket} The newly created socket used to start the connection\n * @private\n */\nfunction tlsConnect(options) {\n  options.path = undefined;\n\n  if (!options.servername && options.servername !== '') {\n    options.servername = net.isIP(options.host) ? '' : options.host;\n  }\n\n  return tls.connect(options);\n}\n\n/**\n * Abort the handshake and emit an error.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {(http.ClientRequest|net.Socket|tls.Socket)} stream The request to\n *     abort or the socket to destroy\n * @param {String} message The error message\n * @private\n */\nfunction abortHandshake(websocket, stream, message) {\n  websocket._readyState = WebSocket.CLOSING;\n\n  const err = new Error(message);\n  Error.captureStackTrace(err, abortHandshake);\n\n  if (stream.setHeader) {\n    stream[kAborted] = true;\n    stream.abort();\n\n    if (stream.socket && !stream.socket.destroyed) {\n      //\n      // On Node.js >= 14.3.0 `request.abort()` does not destroy the socket if\n      // called after the request completed. See\n      // https://github.com/websockets/ws/issues/1869.\n      //\n      stream.socket.destroy();\n    }\n\n    process.nextTick(emitErrorAndClose, websocket, err);\n  } else {\n    stream.destroy(err);\n    stream.once('error', websocket.emit.bind(websocket, 'error'));\n    stream.once('close', websocket.emitClose.bind(websocket));\n  }\n}\n\n/**\n * Handle cases where the `ping()`, `pong()`, or `send()` methods are called\n * when the `readyState` attribute is `CLOSING` or `CLOSED`.\n *\n * @param {WebSocket} websocket The WebSocket instance\n * @param {*} [data] The data to send\n * @param {Function} [cb] Callback\n * @private\n */\nfunction sendAfterClose(websocket, data, cb) {\n  if (data) {\n    const length = toBuffer(data).length;\n\n    //\n    // The `_bufferedAmount` property is used only when the peer is a client and\n    // the opening handshake fails. Under these circumstances, in fact, the\n    // `setSocket()` method is not called, so the `_socket` and `_sender`\n    // properties are set to `null`.\n    //\n    if (websocket._socket) websocket._sender._bufferedBytes += length;\n    else websocket._bufferedAmount += length;\n  }\n\n  if (cb) {\n    const err = new Error(\n      `WebSocket is not open: readyState ${websocket.readyState} ` +\n        `(${readyStates[websocket.readyState]})`\n    );\n    process.nextTick(cb, err);\n  }\n}\n\n/**\n * The listener of the `Receiver` `'conclude'` event.\n *\n * @param {Number} code The status code\n * @param {Buffer} reason The reason for closing\n * @private\n */\nfunction receiverOnConclude(code, reason) {\n  const websocket = this[kWebSocket];\n\n  websocket._closeFrameReceived = true;\n  websocket._closeMessage = reason;\n  websocket._closeCode = code;\n\n  if (websocket._socket[kWebSocket] === undefined) return;\n\n  websocket._socket.removeListener('data', socketOnData);\n  process.nextTick(resume, websocket._socket);\n\n  if (code === 1005) websocket.close();\n  else websocket.close(code, reason);\n}\n\n/**\n * The listener of the `Receiver` `'drain'` event.\n *\n * @private\n */\nfunction receiverOnDrain() {\n  const websocket = this[kWebSocket];\n\n  if (!websocket.isPaused) websocket._socket.resume();\n}\n\n/**\n * The listener of the `Receiver` `'error'` event.\n *\n * @param {(RangeError|Error)} err The emitted error\n * @private\n */\nfunction receiverOnError(err) {\n  const websocket = this[kWebSocket];\n\n  if (websocket._socket[kWebSocket] !== undefined) {\n    websocket._socket.removeListener('data', socketOnData);\n\n    //\n    // On Node.js < 14.0.0 the `'error'` event is emitted synchronously. See\n    // https://github.com/websockets/ws/issues/1940.\n    //\n    process.nextTick(resume, websocket._socket);\n\n    websocket.close(err[kStatusCode]);\n  }\n\n  websocket.emit('error', err);\n}\n\n/**\n * The listener of the `Receiver` `'finish'` event.\n *\n * @private\n */\nfunction receiverOnFinish() {\n  this[kWebSocket].emitClose();\n}\n\n/**\n * The listener of the `Receiver` `'message'` event.\n *\n * @param {Buffer|ArrayBuffer|Buffer[])} data The message\n * @param {Boolean} isBinary Specifies whether the message is binary or not\n * @private\n */\nfunction receiverOnMessage(data, isBinary) {\n  this[kWebSocket].emit('message', data, isBinary);\n}\n\n/**\n * The listener of the `Receiver` `'ping'` event.\n *\n * @param {Buffer} data The data included in the ping frame\n * @private\n */\nfunction receiverOnPing(data) {\n  const websocket = this[kWebSocket];\n\n  websocket.pong(data, !websocket._isServer, NOOP);\n  websocket.emit('ping', data);\n}\n\n/**\n * The listener of the `Receiver` `'pong'` event.\n *\n * @param {Buffer} data The data included in the pong frame\n * @private\n */\nfunction receiverOnPong(data) {\n  this[kWebSocket].emit('pong', data);\n}\n\n/**\n * Resume a readable stream\n *\n * @param {Readable} stream The readable stream\n * @private\n */\nfunction resume(stream) {\n  stream.resume();\n}\n\n/**\n * The listener of the `net.Socket` `'close'` event.\n *\n * @private\n */\nfunction socketOnClose() {\n  const websocket = this[kWebSocket];\n\n  this.removeListener('close', socketOnClose);\n  this.removeListener('data', socketOnData);\n  this.removeListener('end', socketOnEnd);\n\n  websocket._readyState = WebSocket.CLOSING;\n\n  let chunk;\n\n  //\n  // The close frame might not have been received or the `'end'` event emitted,\n  // for example, if the socket was destroyed due to an error. Ensure that the\n  // `receiver` stream is closed after writing any remaining buffered data to\n  // it. If the readable side of the socket is in flowing mode then there is no\n  // buffered data as everything has been already written and `readable.read()`\n  // will return `null`. If instead, the socket is paused, any possible buffered\n  // data will be read as a single chunk.\n  //\n  if (\n    !this._readableState.endEmitted &&\n    !websocket._closeFrameReceived &&\n    !websocket._receiver._writableState.errorEmitted &&\n    (chunk = websocket._socket.read()) !== null\n  ) {\n    websocket._receiver.write(chunk);\n  }\n\n  websocket._receiver.end();\n\n  this[kWebSocket] = undefined;\n\n  clearTimeout(websocket._closeTimer);\n\n  if (\n    websocket._receiver._writableState.finished ||\n    websocket._receiver._writableState.errorEmitted\n  ) {\n    websocket.emitClose();\n  } else {\n    websocket._receiver.on('error', receiverOnFinish);\n    websocket._receiver.on('finish', receiverOnFinish);\n  }\n}\n\n/**\n * The listener of the `net.Socket` `'data'` event.\n *\n * @param {Buffer} chunk A chunk of data\n * @private\n */\nfunction socketOnData(chunk) {\n  if (!this[kWebSocket]._receiver.write(chunk)) {\n    this.pause();\n  }\n}\n\n/**\n * The listener of the `net.Socket` `'end'` event.\n *\n * @private\n */\nfunction socketOnEnd() {\n  const websocket = this[kWebSocket];\n\n  websocket._readyState = WebSocket.CLOSING;\n  websocket._receiver.end();\n  this.end();\n}\n\n/**\n * The listener of the `net.Socket` `'error'` event.\n *\n * @private\n */\nfunction socketOnError() {\n  const websocket = this[kWebSocket];\n\n  this.removeListener('error', socketOnError);\n  this.on('error', NOOP);\n\n  if (websocket) {\n    websocket._readyState = WebSocket.CLOSING;\n    this.destroy();\n  }\n}\n","import { createReadStream, existsSync } from 'node:fs';\nimport { IncomingMessage, ServerResponse } from 'node:http';\nimport { resolve, join, extname } from 'node:path';\nimport { cacheHeader } from 'pretty-cache-header';\n\nconst mimeLookup = {\n  '.js': 'application/javascript,charset=UTF-8',\n  '.html': 'text/html,charset=UTF-8',\n  '.css': 'text/css; charset=UTF-8',\n};\nconst staticPath = 'dist/apps/cf-page/';\nconst file401 = 'dist/apps/node-vless/assets/401.html';\nlet filepath = null;\nexport function serverStaticFile(req: IncomingMessage, resp: ServerResponse) {\n  const url = new URL(req.url, `http://${req.headers['host']}`);\n  let fileurl = url.pathname;\n  fileurl = join(staticPath, fileurl);\n  console.log('....', fileurl);\n  filepath = resolve(fileurl);\n  console.log(filepath);\n\n  if (existsSync(filepath)) {\n    let fileExt = extname(filepath);\n    console.log('fileExt', fileExt);\n    let mimeType = mimeLookup[fileExt];\n\n    resp.writeHead(200, {\n      'Content-Type': mimeType,\n      'Cache-Control': cacheHeader({\n        public: true,\n        maxAge: '1year',\n        staleWhileRevalidate: '1year',\n      }),\n    });\n    return createReadStream(filepath).pipe(resp);\n  } else {\n    resp.writeHead(404);\n    resp.write('not found');\n    resp.end();\n    return resp;\n  }\n}\n\nexport function index401(req: IncomingMessage, resp: ServerResponse) {\n  const file401Path = resolve(file401);\n  if (existsSync(file401Path)) {\n    createReadStream(file401Path).pipe(resp);\n  } else {\n    resp.writeHead(401);\n    resp.write('UUID env not set');\n    resp.end();\n  }\n}\n\nexport function serverIndexPage(\n  req: IncomingMessage,\n  resp: ServerResponse,\n  uuid\n) {\n  // if()\n}\n","export {\n  delay,\n  makeReadableWebSocketStream,\n  safeCloseWebSocket as closeWebSocket,\n  processVlessHeader,\n  vlessJs,\n} from './lib/vless-js';\n","import { stringify } from 'uuid';\nexport function vlessJs(): string {\n  return 'vless-js';\n}\n\nexport function delay(ms: number) {\n  return new Promise((resolve, rej) => {\n    setTimeout(resolve, ms);\n  });\n}\n\nexport function makeReadableWebSocketStream(\n  ws: WebSocket | any,\n  earlyDataHeader: string,\n  log: Function\n) {\n  let readableStreamCancel = false;\n  return new ReadableStream<ArrayBuffer>({\n    start(controller) {\n      ws.addEventListener('message', async (e: { data: ArrayBuffer }) => {\n        // is stream is cancel, skip controller.enqueue\n        if (readableStreamCancel) {\n          return;\n        }\n        const vlessBuffer: ArrayBuffer = e.data;\n        // console.log('MESSAGE', vlessBuffer);\n        // console.log(`message is ${vlessBuffer.byteLength}`);\n        // this is not backpressure, but backpressure is depends on underying websocket can pasue\n        // https://streams.spec.whatwg.org/#example-rs-push-backpressure\n        controller.enqueue(vlessBuffer);\n      });\n      ws.addEventListener('error', (e: any) => {\n        log('socket has error');\n        readableStreamCancel = true;\n        controller.error(e);\n      });\n      ws.addEventListener('close', () => {\n        try {\n          log('webSocket is close');\n          // is stream is cancel, skip controller.close\n          if (readableStreamCancel) {\n            return;\n          }\n          controller.close();\n        } catch (error) {\n          log(`websocketStream can't close DUE to `, error);\n        }\n      });\n      // header ws 0rtt\n      const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader);\n      if (error) {\n        log(`earlyDataHeader has invaild base64`);\n        safeCloseWebSocket(ws);\n        return;\n      }\n      if (earlyData) {\n        controller.enqueue(earlyData);\n      }\n    },\n    pull(controller) {\n      // if ws can stop read if stream is full, we can implement backpressure\n      // https://streams.spec.whatwg.org/#example-rs-push-backpressure\n    },\n    cancel(reason) {\n      // TODO: log can be remove, if writestream has error, write stream will has log\n      log(`websocketStream is cancel DUE to `, reason);\n      if (readableStreamCancel) {\n        return;\n      }\n      readableStreamCancel = true;\n      safeCloseWebSocket(ws);\n    },\n  });\n}\n\nfunction base64ToArrayBuffer(base64Str: string) {\n  if (!base64Str) {\n    return { error: null };\n  }\n  try {\n    // go use modified Base64 for URL rfc4648 which js atob not support\n    base64Str = base64Str.replace(/-/g, '+').replace(/_/g, '/');\n    const decode = atob(base64Str);\n    const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0));\n    return { earlyData: arryBuffer.buffer, error: null };\n  } catch (error) {\n    return { error };\n  }\n}\n\nexport function safeCloseWebSocket(socket: WebSocket | any) {\n  try {\n    if (socket.readyState === socket.OPEN) {\n      socket.close();\n    }\n  } catch (error) {\n    console.error('safeCloseWebSocket error', error);\n  }\n}\n\n//https://github.com/v2ray/v2ray-core/issues/2636\n// 1 字节\t  16 字节       1 字节\t       M 字节\t              1 字节            2 字节      1 字节\t      S 字节\t      X 字节\n// 协议版本\t  等价 UUID\t  附加信息长度 M\t(附加信息 ProtoBuf)  指令(udp/tcp)\t    端口\t      地址类型      地址\t        请求数据\n// 00                   00                                  01                 01bb(443)   02(ip/host)\n// 1 字节\t              1 字节\t      N 字节\t         Y 字节\n// 协议版本，与请求的一致\t附加信息长度 N\t附加信息 ProtoBuf\t响应数据\nexport function processVlessHeader(\n  vlessBuffer: ArrayBuffer,\n  userID: string\n  // uuidLib: any,\n  // lodash: any\n) {\n  if (vlessBuffer.byteLength < 24) {\n    // console.log('invalid data');\n    // controller.error('invalid data');\n    return {\n      hasError: true,\n      message: 'invalid data',\n    };\n  }\n  const version = new Uint8Array(vlessBuffer.slice(0, 1));\n  let isValidUser = false;\n  let isUDP = false;\n  if (stringify(new Uint8Array(vlessBuffer.slice(1, 17))) === userID) {\n    isValidUser = true;\n  }\n  if (!isValidUser) {\n    // console.log('in valid user');\n    // controller.error('in valid user');\n    return {\n      hasError: true,\n      message: 'invalid user',\n    };\n  }\n\n  const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0];\n  //skip opt for now\n\n  const command = new Uint8Array(\n    vlessBuffer.slice(18 + optLength, 18 + optLength + 1)\n  )[0];\n\n  // 0x01 TCP\n  // 0x02 UDP\n  // 0x03 MUX\n  if (command === 1) {\n  } else if (command === 2) {\n    isUDP = true;\n  } else {\n    return {\n      hasError: true,\n      message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`,\n    };\n  }\n  const portIndex = 18 + optLength + 1;\n  const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2);\n  // port is big-Endian in raw data etc 80 == 0x005d\n  const portRemote = new DataView(portBuffer).getInt16(0);\n\n  let addressIndex = portIndex + 2;\n  const addressBuffer = new Uint8Array(\n    vlessBuffer.slice(addressIndex, addressIndex + 1)\n  );\n\n  // 1--> ipv4  addressLength =4\n  // 2--> domain name addressLength=addressBuffer[1]\n  // 3--> ipv6  addressLength =16\n  const addressType = addressBuffer[0];\n  let addressLength = 0;\n  let addressValueIndex = addressIndex + 1;\n  let addressValue = '';\n  switch (addressType) {\n    case 1:\n      addressLength = 4;\n      addressValue = new Uint8Array(\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\n      ).join('.');\n      break;\n    case 2:\n      addressLength = new Uint8Array(\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + 1)\n      )[0];\n      addressValueIndex += 1;\n      addressValue = new TextDecoder().decode(\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\n      );\n      break;\n    case 3:\n      addressLength = 16;\n      const dataView = new DataView(\n        vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)\n      );\n      // 2001:0db8:85a3:0000:0000:8a2e:0370:7334\n      const ipv6 = [];\n      for (let i = 0; i < 8; i++) {\n        ipv6.push(dataView.getUint16(i * 2).toString(16));\n      }\n      addressValue = ipv6.join(':');\n      // console.log('---------', addressValue)\n      // seems no need add [] for ipv6\n      // if (addressValue) {\n      //   addressValue = `[${addressValue}]`;\n      // }\n      break;\n    default:\n      console.log(`invild  addressType is ${addressType}`);\n  }\n  if (!addressValue) {\n    // console.log(`[${address}:${port}] addressValue is empty`);\n    // controller.error(`[${address}:${portWithRandomLog}] addressValue is empty`);\n    return {\n      hasError: true,\n      message: `addressValue is empty, addressType is ${addressType}`,\n    };\n  }\n\n  return {\n    hasError: false,\n    addressRemote: addressValue,\n    portRemote,\n    rawDataIndex: addressValueIndex + addressLength,\n    vlessVersion: version,\n    isUDP,\n  };\n}\n","module.exports = require(\"buffer\");","module.exports = require(\"crypto\");","module.exports = require(\"events\");","module.exports = require(\"http\");","module.exports = require(\"https\");","module.exports = require(\"net\");","module.exports = require(\"node:dgram\");","module.exports = require(\"node:dns\");","module.exports = require(\"node:fs\");","module.exports = require(\"node:net\");","module.exports = require(\"node:path\");","module.exports = require(\"node:stream/web\");","module.exports = require(\"stream\");","module.exports = require(\"tls\");","module.exports = require(\"url\");","module.exports = require(\"zlib\");","\"use strict\";\nvar __create = Object.create;\nvar __defProp = Object.defineProperty;\nvar __getOwnPropDesc = Object.getOwnPropertyDescriptor;\nvar __getOwnPropNames = Object.getOwnPropertyNames;\nvar __getProtoOf = Object.getPrototypeOf;\nvar __hasOwnProp = Object.prototype.hasOwnProperty;\nvar __export = (target, all) => {\n  for (var name in all)\n    __defProp(target, name, { get: all[name], enumerable: true });\n};\nvar __copyProps = (to, from, except, desc) => {\n  if (from && typeof from === \"object\" || typeof from === \"function\") {\n    for (let key of __getOwnPropNames(from))\n      if (!__hasOwnProp.call(to, key) && key !== except)\n        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });\n  }\n  return to;\n};\nvar __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(\n  isNodeMode || !mod || !mod.__esModule ? __defProp(target, \"default\", { value: mod, enumerable: true }) : target,\n  mod\n));\nvar __toCommonJS = (mod) => __copyProps(__defProp({}, \"__esModule\", { value: true }), mod);\n\n// src/index.ts\nvar src_exports = {};\n__export(src_exports, {\n  cacheHeader: () => cacheHeader\n});\nmodule.exports = __toCommonJS(src_exports);\n\n// src/cache-header.ts\nvar import_timestring = __toESM(require(\"timestring\"), 1);\nfunction cacheHeader(params) {\n  const transformed = Object.entries(params).reduce((acc, [key, value]) => {\n    const kebabKey = key.replace(/[A-Z]/g, (char) => \"-\" + char.toLowerCase());\n    return typeof value === \"string\" || value === true ? [...acc, value === true ? kebabKey : `${kebabKey}=${(0, import_timestring.default)(value)}`] : acc;\n  }, []);\n  return transformed.join(\", \");\n}\n// Annotate the CommonJS export names for ESM import in node:\n0 && (module.exports = {\n  cacheHeader\n});\n//# sourceMappingURL=index.cjs.map","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tvar cachedModule = __webpack_module_cache__[moduleId];\n\tif (cachedModule !== undefined) {\n\t\treturn cachedModule.exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = (module) => {\n\tvar getter = module && module.__esModule ?\n\t\t() => (module['default']) :\n\t\t() => (module);\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","// define getter functions for harmony exports\n__webpack_require__.d = (exports, definition) => {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))","// define __esModule on exports\n__webpack_require__.r = (exports) => {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","import { createServer } from 'http';\nimport { parse } from 'url';\nimport { WebSocketServer, WebSocket } from 'ws';\nimport { index401, serverStaticFile } from './app/utils';\nimport { validate } from 'uuid';\nimport { createReadStream } from 'node:fs';\nimport { setDefaultResultOrder } from 'node:dns';\nimport { createSocket, Socket as UDPSocket } from 'node:dgram';\n\nimport {\n  makeReadableWebSocketStream,\n  processVlessHeader,\n  delay,\n  closeWebSocket,\n} from 'vless-js';\nimport { connect, Socket } from 'node:net';\nimport { Duplex, Readable, Writable } from 'stream';\nimport {\n  TransformStream,\n  ReadableStream,\n  WritableStream,\n} from 'node:stream/web';\nconst port = process.env.PORT;\nconst smallRAM = process.env.SMALLRAM || false;\nconst userID = process.env.UUID || '';\n//'ipv4first' or 'verbatim'\nconst dnOder = process.env.DNSORDER || 'verbatim';\nif (dnOder === 'ipv4first') {\n  setDefaultResultOrder(dnOder);\n}\n\nlet isVaildUser = validate(userID);\nif (!isVaildUser) {\n  console.log('not set valid UUID');\n}\n\nconst server = createServer((req, resp) => {\n  if (!isVaildUser) {\n    return index401(req, resp);\n  }\n  const url = new URL(req.url, `http://${req.headers['host']}`);\n  // health check\n  if (req.method === 'GET' && url.pathname.startsWith('/health')) {\n    resp.writeHead(200);\n    resp.write('health 200');\n    resp.end();\n    return;\n  }\n\n  // index page\n  if (url.pathname.includes(userID)) {\n    const index = 'dist/apps/cf-page/index.html';\n    resp.writeHead(200, {\n      'Content-Type': 'text/html,charset=UTF-8',\n    });\n    return createReadStream(index).pipe(resp);\n  }\n  if (req.method === 'GET' && url.pathname.startsWith('/assets')) {\n    return serverStaticFile(req, resp);\n  }\n\n  const basicAuth = req.headers.authorization || '';\n  const authStringBase64 = basicAuth.split(' ')?.[1] || '';\n  const authString = Buffer.from(authStringBase64, 'base64').toString('ascii');\n  if (authString && authString.includes(userID)) {\n    resp.writeHead(302, {\n      'content-type': 'text/html; charset=utf-8',\n      Location: `./${userID}`,\n    });\n    resp.end();\n  } else {\n    resp.writeHead(401, {\n      'content-type': 'text/html; charset=utf-8',\n      'WWW-Authenticate': 'Basic',\n    });\n    resp.end();\n  }\n});\nconst vlessWServer = new WebSocketServer({ noServer: true });\n\nvlessWServer.on('connection', async function connection(ws, request) {\n  let address = '';\n  let portWithRandomLog = '';\n  try {\n    const log = (info: string, event?: any) => {\n      console.log(`[${address}:${portWithRandomLog}] ${info}`, event || '');\n    };\n    let remoteConnection: Duplex = null;\n    let udpClientStream: TransformStream = null;\n    let remoteConnectionReadyResolve: Function;\n    const earlyDataHeader = request.headers['sec-websocket-protocol'];\n    const readableWebSocketStream = makeReadableWebSocketStream(\n      ws,\n      earlyDataHeader,\n      log\n    );\n    let vlessResponseHeader: Uint8Array | null = null;\n\n    // ws  --> remote\n    readableWebSocketStream\n      .pipeTo(\n        new WritableStream({\n          async write(chunk: Buffer, controller) {\n            if (!Buffer.isBuffer(chunk)) {\n              chunk = Buffer.from(chunk);\n            }\n            if (udpClientStream) {\n              const writer = udpClientStream.writable.getWriter();\n              // nodejs buffer to ArrayBuffer issue\n              // https://nodejs.org/dist/latest-v18.x/docs/api/buffer.html#bufbuffer\n              await writer.write(\n                chunk.buffer.slice(\n                  chunk.byteOffset,\n                  chunk.byteOffset + chunk.length\n                )\n              );\n              writer.releaseLock();\n              return;\n            }\n            if (remoteConnection) {\n              await socketAsyncWrite(remoteConnection, chunk);\n              // remoteConnection.write(chunk);\n              return;\n            }\n            const vlessBuffer = chunk.buffer.slice(\n              chunk.byteOffset,\n              chunk.byteOffset + chunk.length\n            );\n            const {\n              hasError,\n              message,\n              portRemote,\n              addressRemote,\n              rawDataIndex,\n              vlessVersion,\n              isUDP,\n            } = processVlessHeader(vlessBuffer, userID);\n            address = addressRemote || '';\n            portWithRandomLog = `${portRemote}--${Math.random()} ${\n              isUDP ? 'udp ' : 'tcp '\n            } `;\n            if (hasError) {\n              controller.error(`[${address}:${portWithRandomLog}] ${message} `);\n            }\n            // const addressType = requestAddr >> 42\n            // const addressLength = requestAddr & 0x0f;\n            console.log(`[${address}:${portWithRandomLog}] connecting`);\n            vlessResponseHeader = new Uint8Array([vlessVersion![0], 0]);\n            const rawClientData = vlessBuffer.slice(rawDataIndex!);\n            if (isUDP) {\n              udpClientStream = makeUDPSocketStream(portRemote, address);\n              const writer = udpClientStream.writable.getWriter();\n              writer.write(rawClientData).catch((error) => console.log);\n              writer.releaseLock();\n              remoteConnectionReadyResolve(udpClientStream);\n            } else {\n              remoteConnection = await connect2Remote(portRemote, address, log);\n              remoteConnection.write(new Uint8Array(rawClientData));\n              remoteConnectionReadyResolve(remoteConnection);\n            }\n          },\n          close() {\n            // if (udpClientStream ) {\n            //   udpClientStream.writable.close();\n            // }\n            // (remoteConnection as Socket).end();\n            console.log(\n              `[${address}:${portWithRandomLog}] readableWebSocketStream is close`\n            );\n          },\n          abort(reason) {\n            // TODO: log can be remove, abort will catch by catch block\n            console.log(\n              `[${address}:${portWithRandomLog}] readableWebSocketStream is abort`,\n              JSON.stringify(reason)\n            );\n          },\n        })\n      )\n      .catch((error) => {\n        console.error(\n          `[${address}:${portWithRandomLog}] readableWebSocketStream pipeto has exception`,\n          error.stack || error\n        );\n        // error is cancel readable stream anyway, no need close websocket in here\n        // closeWebSocket(webSocket);\n        // close remote conn\n        // remoteConnection?.close();\n      });\n\n    await new Promise((resolve) => (remoteConnectionReadyResolve = resolve));\n    // remote --> ws\n    let responseStream = udpClientStream?.readable;\n    if (remoteConnection) {\n      // ignore type error\n      // @ts-ignore\n      responseStream = Readable.toWeb(remoteConnection, {\n        strategy: {\n          // due to nodejs issue https://github.com/nodejs/node/issues/46347\n          highWaterMark: smallRAM ? 100 : 1000, // 1000 * tcp mtu(64kb) = 64mb\n        },\n      });\n    }\n    let count = 0;\n\n    // ws.send(vlessResponseHeader!);\n    // remoteConnection.pipe(\n    //   new Writable({\n    //     async write(chunk: Uint8Array, encoding, callback) {\n    //       count += chunk.byteLength;\n    //       console.log('ws write', count / (1024 * 1024));\n    //       console.log(\n    //         '-----++++',\n    //         (remoteConnection as Socket).bytesRead / (1024 * 1024)\n    //       );\n    //       if (ws.readyState === ws.OPEN) {\n    //         await wsAsyncWrite(ws, chunk);\n    //         callback();\n    //       }\n    //     },\n    //   })\n    // );\n    // if readable not pipe can't wait fro writeable write method\n    await responseStream.pipeTo(\n      new WritableStream({\n        start() {\n          if (ws.readyState === ws.OPEN) {\n            ws.send(vlessResponseHeader!);\n          }\n        },\n        async write(chunk: Uint8Array, controller) {\n          // count += chunk.byteLength;\n          // console.log('ws write', count / (1024 * 1024));\n          // console.log(\n          //   '-----++++',\n          //   (remoteConnection as Socket).bytesRead / (1024 * 1024),\n          //   (remoteConnection as Socket).readableHighWaterMark\n          // );\n          // we have issue there, maybe beacsue nodejs web stream has bug.\n          // socket web stream will read more data from socket\n          if (ws.readyState === ws.OPEN) {\n            await wsAsyncWrite(ws, chunk);\n          } else {\n            if (!(remoteConnection as Socket).destroyed) {\n              (remoteConnection as Socket).destroy();\n            }\n          }\n        },\n        close() {\n          console.log(\n            `[${address}:${portWithRandomLog}] remoteConnection!.readable is close`\n          );\n        },\n        abort(reason) {\n          closeWebSocket(ws);\n          console.error(\n            `[${address}:${portWithRandomLog}] remoteConnection!.readable abort`,\n            reason\n          );\n        },\n      })\n    );\n  } catch (error) {\n    console.error(\n      `[${address}:${portWithRandomLog}] processWebSocket has exception `,\n      error.stack || error\n    );\n    closeWebSocket(ws);\n  }\n});\n\nserver.on('upgrade', function upgrade(request, socket, head) {\n  const { pathname } = parse(request.url);\n\n  vlessWServer.handleUpgrade(request, socket, head, function done(ws) {\n    vlessWServer.emit('connection', ws, request);\n  });\n});\n\nserver.listen(\n  {\n    port: port,\n    host: '::',\n    // host: '0.0.0.0',\n  },\n  () => {\n    console.log(`server listen in http://127.0.0.1:${port}`);\n  }\n);\n\nasync function connect2Remote(port, host, log: Function): Promise<Socket> {\n  return new Promise((resole, reject) => {\n    const remoteSocket = connect(\n      {\n        port: port,\n        host: host,\n        // https://github.com/nodejs/node/pull/46587\n        // autoSelectFamily: true,\n      },\n      () => {\n        log(`connected`);\n        resole(remoteSocket);\n      }\n    );\n    remoteSocket.addListener('error', () => {\n      reject('remoteSocket has error');\n    });\n  });\n}\n\nasync function socketAsyncWrite(ws: Duplex, chunk: Buffer) {\n  return new Promise((resolve, reject) => {\n    ws.write(chunk, (error) => {\n      if (error) {\n        reject(error);\n      } else {\n        resolve('');\n      }\n    });\n  });\n}\n\nasync function wsAsyncWrite(ws: WebSocket, chunk: Uint8Array) {\n  return new Promise((resolve, reject) => {\n    ws.send(chunk, (error) => {\n      if (error) {\n        reject(error);\n      } else {\n        resolve('');\n      }\n    });\n  });\n}\n\nfunction makeUDPSocketStream(portRemote, address) {\n  const udpClient = createSocket('udp4');\n  const transformStream = new TransformStream({\n    start(controller) {\n      /* … */\n      udpClient.on('message', (message, info) => {\n        controller.enqueue(\n          Buffer.concat([new Uint8Array([0, info.size]), message])\n        );\n      });\n      udpClient.on('error', (error) => {\n        console.log('udpClient error event', error);\n        controller.error(error);\n      });\n    },\n\n    async transform(chunk: ArrayBuffer, controller) {\n      //seems v2ray will use same web socket for dns query..\n      //And v2ray will combine A record and AAAA record into one ws message and use 2 btye for dns query length\n      for (let index = 0; index < chunk.byteLength; ) {\n        const lengthBuffer = chunk.slice(index, index + 2);\n        const udpPakcetLength = new DataView(lengthBuffer).getInt16(0);\n        const udpData = new Uint8Array(\n          chunk.slice(index + 2, index + 2 + udpPakcetLength)\n        );\n        index = index + 2 + udpPakcetLength;\n        await new Promise((resolve, reject) => {\n          udpClient.send(udpData, portRemote, address, (err) => {\n            if (err) {\n              console.log('udps send error', err);\n              controller.error(`Failed to send UDP packet !! ${err}`);\n              safeCloseUDP(udpClient);\n            }\n            resolve(true);\n          });\n        });\n        index = index;\n      }\n\n      // console.log('dns chunk', chunk);\n      // console.log(portRemote, address);\n      // port is big-Endian in raw data etc 80 == 0x005d\n    },\n\n    flush(controller) {\n      safeCloseUDP(udpClient);\n      controller.terminate();\n    },\n  });\n  return transformStream;\n}\n\nfunction safeCloseUDP(client: UDPSocket) {\n  try {\n    client.close();\n  } catch (error) {\n    console.log('error close udp', error);\n  }\n}\n"],"names":[],"sourceRoot":""}
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