Enhance WebSocket testing script to include session ID handling

This commit updates the `testWebSocket.js` script to extract and utilize the session ID from the HTTP polling response. The WebSocket upgrade request is modified to include the session ID when available, improving the accuracy of the upgrade tests. Additionally, detailed logging for response bodies is added to aid in diagnosing potential issues during the WebSocket upgrade process.

backend/scripts/testWebSocket.js

@@ -33,12 +33,14 @@ const pollingReq = http.get(pollingUrl, (res) => {
       console.log(`   Response: ${data.substring(0, 200)}...`);
       
       // Versuche Session-ID zu extrahieren
+      let sessionId = null;
       try {
         const jsonMatch = data.match(/\{.*\}/);
         if (jsonMatch) {
           const json = JSON.parse(jsonMatch[0]);
           if (json.sid) {
-            console.log(`   Session ID: ${json.sid}`);
+            sessionId = json.sid;
+            console.log(`   Session ID: ${sessionId}`);
           }
         }
       } catch (e) {
@@ -47,7 +49,7 @@ const pollingReq = http.get(pollingUrl, (res) => {
       
       // Test 2: WebSocket-Upgrade
       console.log('\n2️⃣ Teste WebSocket-Upgrade...');
-      testWebSocketUpgrade(host, port);
+      testWebSocketUpgrade(host, port, sessionId);
     } else {
       console.error(`   ❌ HTTP-Polling fehlgeschlagen: Status ${res.statusCode}`);
       process.exit(1);
@@ -71,14 +73,17 @@ pollingReq.setTimeout(5000, () => {
   process.exit(1);
 });
 
-function testWebSocketUpgrade(host, port) {
+function testWebSocketUpgrade(host, port, sessionId) {
   // WebSocket-Upgrade-Request
   const wsKey = Buffer.from(Math.random().toString()).toString('base64').substring(0, 16);
+  const path = sessionId 
+    ? `/socket.io/?EIO=4&transport=websocket&sid=${sessionId}`
+    : '/socket.io/?EIO=4&transport=websocket';
   
   const options = {
     hostname: host,
     port: port,
-    path: '/socket.io/?EIO=4&transport=websocket',
+    path: path,
     method: 'GET',
     headers: {
       'Upgrade': 'websocket',
@@ -100,8 +105,22 @@ function testWebSocketUpgrade(host, port) {
     } else {
       console.log(`   ⚠️  WebSocket-Upgrade: Status ${res.statusCode} (erwartet: 101)`);
       console.log(`   → Server antwortet, aber Upgrade nicht erfolgreich`);
-      console.log(`   → Möglicherweise wird nur HTTP-Polling unterstützt`);
-      process.exit(0);
+      
+      // Lese Response-Body für weitere Informationen
+      let body = '';
+      res.on('data', (chunk) => {
+        body += chunk;
+      });
+      res.on('end', () => {
+        if (body) {
+          console.log(`   Response Body: ${body.substring(0, 200)}`);
+        }
+        if (res.statusCode === 400) {
+          console.log(`   → Socket.IO lehnt den Request ab (Bad Request)`);
+          console.log(`   → Möglicherweise fehlt die Session-ID oder sie ist ungültig`);
+        }
+        process.exit(0);
+      });
     }
   });