Claude: WebRTC

public/viewer.js

@@ -5,66 +5,103 @@ const ICE_SERVERS = [
   { urls: 'stun:stun1.l.google.com:19302' },
 ];
 
-// Wartet bis ICE-Gathering fertig ist (max timeoutMs)
+function log(camId, msg) {
+  console.log(`[${camId}] ${msg}`);
+}
+
 function waitIceComplete(pc, timeoutMs = 5000) {
   return new Promise(resolve => {
     if (pc.iceGatheringState === 'complete') { resolve(); return; }
     const check = () => { if (pc.iceGatheringState === 'complete') resolve(); };
     pc.addEventListener('icegatheringstatechange', check);
-    setTimeout(() => { pc.removeEventListener('icegatheringstatechange', check); resolve(); }, timeoutMs);
+    setTimeout(() => {
+      pc.removeEventListener('icegatheringstatechange', check);
+      log('ice', `gathering timeout nach ${timeoutMs}ms – sende trotzdem`);
+      resolve();
+    }, timeoutMs);
   });
 }
 
 async function startWebRTC(camId, videoEl, statusEl) {
-  statusEl.textContent = 'Verbinde...';
+  setStatus(statusEl, 'Verbinde...', '#888');
+  log(camId, `WebRTC start → /api/webrtc?src=${camId}`);
 
   let pc;
   try {
     pc = new RTCPeerConnection({ iceServers: ICE_SERVERS });
 
-    // Nur Video empfangen, kein Audio
     pc.addTransceiver('video', { direction: 'recvonly' });
 
-    pc.ontrack = ({ streams }) => {
-      if (!streams[0]) return;
-      videoEl.srcObject = streams[0];
-      videoEl.play().catch(() => {});
+    pc.onicecandidate = ({ candidate }) => {
+      if (candidate) log(camId, `ICE candidate: ${candidate.type} ${candidate.address ?? '?'}`);
     };
 
+    pc.onicegatheringstatechange = () =>
+      log(camId, `ICE gathering: ${pc.iceGatheringState}`);
+
     pc.oniceconnectionstatechange = () => {
       const s = pc.iceConnectionState;
-      statusEl.textContent = { connected: 'Live ✓', completed: 'Live ✓' }[s] ?? s;
+      log(camId, `ICE connection: ${s}`);
+      const colors = { connected: '#4c4', completed: '#4c4', checking: '#fa0', failed: '#c44', disconnected: '#c44' };
+      setStatus(statusEl, s, colors[s] ?? '#888');
       if (s === 'failed' || s === 'closed') {
         pc.close();
         setTimeout(() => startWebRTC(camId, videoEl, statusEl), 4000);
       }
     };
 
-    // SDP Offer erstellen und warten bis alle ICE-Kandidaten gesammelt sind
+    pc.onconnectionstatechange = () =>
+      log(camId, `connection: ${pc.connectionState}`);
+
+    pc.ontrack = ({ streams }) => {
+      log(camId, `Track erhalten: ${streams.length} stream(s)`);
+      if (streams[0]) {
+        videoEl.srcObject = streams[0];
+        videoEl.play().catch(e => log(camId, `play() Fehler: ${e.message}`));
+        setStatus(statusEl, 'Live ✓', '#4c4');
+      }
+    };
+
+    log(camId, 'Erstelle SDP Offer...');
     const offer = await pc.createOffer();
     await pc.setLocalDescription(offer);
+
+    log(camId, `ICE gathering wartet (max 5s)...`);
     await waitIceComplete(pc);
 
-    // Signaling über Node.js-Proxy (kein separater go2rtc-Port nach aussen nötig)
+    log(camId, `Sende Offer (${pc.localDescription.sdp.length} Bytes) an Server...`);
     const resp = await fetch(`/api/webrtc?src=${encodeURIComponent(camId)}`, {
       method:  'POST',
       headers: { 'Content-Type': 'application/sdp' },
       body:    pc.localDescription.sdp,
     });
 
-    if (!resp.ok) throw new Error(`Signaling HTTP ${resp.status}: ${await resp.text()}`);
+    if (!resp.ok) {
+      const body = await resp.text();
+      throw new Error(`Signaling HTTP ${resp.status}: ${body}`);
+    }
 
-    await pc.setRemoteDescription({ type: 'answer', sdp: await resp.text() });
+    const sdpAnswer = await resp.text();
+    log(camId, `Answer erhalten (${sdpAnswer.length} Bytes)`);
+    await pc.setRemoteDescription({ type: 'answer', sdp: sdpAnswer });
+    log(camId, 'Remote description gesetzt – warte auf ICE...');
 
   } catch (err) {
-    statusEl.textContent = `Fehler: ${err.message}`;
-    console.error(`[${camId}]`, err);
+    console.error(`[${camId}] Fehler:`, err);
+    setStatus(statusEl, `${err.message}`, '#c44');
     pc?.close();
     setTimeout(() => startWebRTC(camId, videoEl, statusEl), 5000);
   }
 }
 
+function setStatus(el, text, color) {
+  el.textContent = text;
+  el.style.color = color ?? '#999';
+}
+
 function createCameraView(camId, container) {
+  log(camId, 'View erstellt');
+
   const box = document.createElement('div');
   box.className = 'cam-box';
 
@@ -72,7 +109,7 @@ function createCameraView(camId, container) {
   video.autoplay    = true;
   video.playsInline = true;
   video.muted       = true;
-  video.style.cssText = 'display:block;width:640px;height:480px;background:#000';
+  video.style.cssText = 'display:block;width:640px;height:480px;background:#111';
   box.appendChild(video);
 
   const label = document.createElement('div');
@@ -101,23 +138,29 @@ function createCameraView(camId, container) {
   startWebRTC(camId, video, status);
 }
 
-// Kamera-Liste von go2rtc (via Node.js-Proxy), dann Views aufbauen
+// Kamera-Liste via /api/snapshot (proxied go2rtc /api/streams)
+log('init', 'Frage Kamera-Liste ab...');
 fetch('/api/snapshot')
-  .then(r => r.json())
+  .then(r => {
+    log('init', `/api/snapshot → HTTP ${r.status}`);
+    return r.json();
+  })
   .then(data => {
+    log('init', `Kameras: ${JSON.stringify(data.cameras)}`);
     const container = document.getElementById('cameras');
     const cams = data.cameras ?? [];
     if (cams.length === 0) {
-      document.getElementById('statusText').textContent = 'Keine Kameras in go2rtc';
+      document.getElementById('statusText').textContent = 'Keine Kameras (go2rtc läuft?)';
+      console.warn('go2rtc meldet keine Streams. Prüfe http://server:1984');
       return;
     }
     cams.forEach(c => createCameraView(c.id, container));
     document.getElementById('statusText').textContent =
       `${cams.length} Kamera${cams.length !== 1 ? 's' : ''} · WebRTC`;
   })
-  .catch(() => {
-    // Fallback wenn go2rtc noch nicht läuft
+  .catch(err => {
+    console.error('[init] /api/snapshot Fehler:', err);
+    document.getElementById('statusText').textContent = 'API-Fehler – Fallback';
     const container = document.getElementById('cameras');
     ['cam0', 'cam1'].forEach(id => createCameraView(id, container));
-    document.getElementById('statusText').textContent = 'go2rtc nicht erreichbar – versuche trotzdem';
   });