Update worker.js

worker.js

@@ -816,7 +816,46 @@ async function getVLESSConfig(userID, hostName, sub, userAgent) {
 				return `Error fetching content: ${error.message}`;
 			}
 	  	} else {
-		return 'Error: fetch is not available in this environment.';
+			return 'Error: fetch is not available in this environment.';//
+	  	}
+	} else if (sub && userAgent.includes('sing-box')) {
+		// 如果sub不为空且UA为sing-box，则发起特定请求
+		let singBoxVersion = null;
+	
+		// 提取sing-box版本号
+		const match = userAgent.match(/sing-box (\d+\.\d+\.\d+)/);
+		if (match) {
+		  singBoxVersion = match[1];
+		}
+	
+		if (singBoxVersion && compareVersions(singBoxVersion, '1.8.0') >= 0) {
+		    // 如果 sing-box 版本是 1.8.0 或更高
+		  	if (typeof fetch === 'function') {
+				try {
+				const response = await fetch(`https://sing-box-subscribe.vercel.app/config/https:/${hostName}/${userID}`);
+				const content = await response.text();
+				return content;
+				} catch (error) {
+				console.error('获取内容时出错:', error);
+				return `获取内容时出错: ${error.message}`;
+				}
+		  	} else {
+			return '错误: 在此环境中不支持 fetch。';
+		  	}
+		} else {
+		  	// 如果 sing-box 版本低于 1.8.0
+		  	if (typeof fetch === 'function') {
+				try {
+			 		const response = await fetch(`https://sub2singbox.fuck.cloudns.biz/config/https:/${hostName}/${userID}`);
+			  		const content = await response.text();
+			  		return content;
+				} catch (error) {
+					console.error('获取内容时出错:', error);
+					return `获取内容时出错: ${error.message}`;
+				}
+		  	} else {
+				return '错误: 在此环境中不支持 fetch。';
+		  	}
 		}
 	  	} else {
 	  	// 如果sub不为空且UA，则发起一般请求
@@ -835,3 +874,15 @@ async function getVLESSConfig(userID, hostName, sub, userAgent) {
 	}
 }
   
+  // 辅助函数用于比较版本号
+function compareVersions(version1, version2) {
+	const parts1 = version1.split('.').map(Number);
+	const parts2 = version2.split('.').map(Number);
+  
+	for (let i = 0; i < 3; i++) {
+	  if (parts1[i] < parts2[i]) return -1;
+	  if (parts1[i] > parts2[i]) return 1;
+	}
+  
+	return 0;
+}