update

plugins/echo.js

@@ -0,0 +1,30 @@
+// Echo JS Plugin - 回显插件示例
+function metadata() {
+    return {
+        name: "echo-js",
+        version: "1.0.0",
+        type: "app",
+        run_at: "client",
+        description: "Echo plugin written in JavaScript",
+        author: "GoTunnel"
+    };
+}
+
+function start() {
+    log("Echo JS plugin started");
+}
+
+function handleConn(conn) {
+    log("New connection");
+    while (true) {
+        var data = conn.Read(4096);
+        if (!data || data.length === 0) {
+            break;
+        }
+        conn.Write(data);
+    }
+}
+
+function stop() {
+    log("Echo JS plugin stopped");
+}