zm-api/webrtc_test.html at master · SteveGilvarry/zm-api · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>WebRTC Live Stream Test</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: monospace; background: #1a1a2e; color: #e0e0e0; padding: 20px; }
    h1 { color: #00d4ff; margin-bottom: 20px; }
    .controls { display: flex; gap: 10px; align-items: center; margin-bottom: 20px; flex-wrap: wrap; }
    label { color: #aaa; }
    input, select { background: #16213e; color: #e0e0e0; border: 1px solid #0f3460; padding: 6px 10px; border-radius: 4px; font-family: monospace; }
    button { padding: 8px 16px; border: none; border-radius: 4px; cursor: pointer; font-family: monospace; font-weight: bold; }
    .btn-start { background: #00b894; color: #fff; }
    .btn-start:hover { background: #00a885; }
    .btn-stop { background: #e74c3c; color: #fff; }
    .btn-stop:hover { background: #c0392b; }
    .btn-clear { background: #636e72; color: #fff; }
    .btn-clear:hover { background: #535c60; }
    button:disabled { opacity: 0.5; cursor: not-allowed; }
    .main { display: flex; gap: 20px; }
    .video-container { flex: 0 0 auto; }
    video { background: #000; border: 2px solid #0f3460; border-radius: 4px; display: block; }
    .log-container { flex: 1; min-width: 300px; }
    #log { background: #0a0a1a; border: 1px solid #0f3460; border-radius: 4px; padding: 10px; height: 500px; overflow-y: auto; font-size: 12px; line-height: 1.5; white-space: pre-wrap; word-break: break-all; }
    .log-info { color: #74b9ff; }
    .log-success { color: #00b894; }
    .log-warn { color: #fdcb6e; }
    .log-error { color: #e74c3c; }
    .log-data { color: #a29bfe; }
    .log-ws { color: #55efc4; }
    .status { padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: bold; }
    .status-disconnected { background: #636e72; }
    .status-connecting { background: #0984e3; }
    .status-connected { background: #00b894; }
    .status-streaming { background: #6c5ce7; }
    .status-error { background: #e74c3c; }
    .stats { margin-top: 10px; font-size: 12px; color: #aaa; }
    .stats span { color: #00d4ff; }
  </style>
</head>
<body>
  <h1>WebRTC Live Stream Test</h1>

  <div class="controls">
    <label>Host:</label>
    <input type="text" id="host" value="localhost:8080" size="20">
    <label>Monitor:</label>
    <input type="number" id="monitorId" value="2" min="1" style="width:60px">
    <button class="btn-start" id="btnStart" onclick="startStream()">Start Stream</button>
    <button class="btn-stop" id="btnStop" onclick="stopStream()" disabled>Stop</button>
    <button class="btn-clear" onclick="clearLog()">Clear Log</button>
    <span class="status status-disconnected" id="status">Disconnected</span>
  </div>

  <div class="main">
    <div class="video-container">
      <video id="video" width="640" height="480" autoplay muted playsinline></video>
      <div class="stats">
        Resolution: <span id="statRes">-</span> |
        Frames: <span id="statFrames">-</span> |
        Bitrate: <span id="statBitrate">-</span> |
        Codec: <span id="statCodec">-</span>
      </div>
    </div>
    <div class="log-container">
      <div id="log"></div>
    </div>
  </div>

  <script>
    let ws = null;
    let pc = null;
    let sessionId = null;
    let statsInterval = null;
    let prevBytesReceived = 0;
    let prevTimestamp = 0;

    function log(msg, cls = 'log-info') {
      const el = document.getElementById('log');
      const time = new Date().toLocaleTimeString('en-GB', { hour12: false, fractionalSecondDigits: 3 });
      const line = document.createElement('div');
      line.className = cls;
      line.textContent = `[${time}] ${msg}`;
      el.appendChild(line);
      el.scrollTop = el.scrollHeight;
    }

    function clearLog() {
      document.getElementById('log').innerHTML = '';
    }

    function setStatus(text, cls) {
      const el = document.getElementById('status');
      el.textContent = text;
      el.className = `status status-${cls}`;
    }

    async function startStream() {
      const host = document.getElementById('host').value;
      const monitorId = document.getElementById('monitorId').value;

      document.getElementById('btnStart').disabled = true;
      document.getElementById('btnStop').disabled = false;
      setStatus('Starting...', 'connecting');

      // Step 1: Start the live stream with WebRTC enabled
      log(`Starting live stream for monitor ${monitorId}...`);
      try {
        const resp = await fetch(`http://${host}/api/v3/live/${monitorId}/start`, {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ enable_hls: false, enable_webrtc: true, enable_mse: false })
        });
        const data = await resp.json();
        if (!resp.ok) {
          // 409 = already running, that's fine
          if (resp.status === 409) {
            log(`Session already active for monitor ${monitorId}, connecting...`, 'log-warn');
          } else {
            throw new Error(`HTTP ${resp.status}: ${JSON.stringify(data)}`);
          }
        } else {
          log(`Stream started: ${JSON.stringify(data)}`, 'log-success');
        }
      } catch (e) {
        log(`Failed to start stream: ${e.message}`, 'log-error');
        // Try connecting to WebSocket anyway (session might already exist)
        log('Attempting WebSocket connection anyway...', 'log-warn');
      }

      // Step 2: Connect WebSocket for signaling
      const wsUrl = `ws://${host}/api/v3/live/${monitorId}/webrtc/ws`;
      log(`Connecting WebSocket: ${wsUrl}`);
      setStatus('Connecting WS...', 'connecting');

      try {
        ws = new WebSocket(wsUrl);
      } catch (e) {
        log(`WebSocket creation failed: ${e.message}`, 'log-error');
        setStatus('Error', 'error');
        resetButtons();
        return;
      }

      ws.onopen = () => {
        log('WebSocket connected', 'log-success');
        setStatus('WS Connected', 'connecting');
      };

      ws.onclose = (e) => {
        log(`WebSocket closed: code=${e.code} reason=${e.reason}`, 'log-warn');
        if (!document.getElementById('btnStart').disabled) return; // already stopped
        setStatus('Disconnected', 'disconnected');
      };

      ws.onerror = (e) => {
        log('WebSocket error', 'log-error');
        setStatus('WS Error', 'error');
      };

      ws.onmessage = async (event) => {
        let msg;
        try {
          msg = JSON.parse(event.data);
        } catch (e) {
          log(`Non-JSON message: ${event.data}`, 'log-warn');
          return;
        }

        log(`WS recv: ${msg.type} ${msg.session_id ? '(session=' + msg.session_id.substring(0,8) + '...)' : ''}`, 'log-ws');

        switch (msg.type) {
          case 'offer':
            sessionId = msg.session_id;
            await handleOffer(msg);
            break;
          case 'ready':
            log(`Stream READY for monitor ${msg.monitor_id}`, 'log-success');
            setStatus('Streaming', 'streaming');
            startStatsPolling();
            break;
          case 'icecandidate':
            await handleRemoteIceCandidate(msg);
            break;
          case 'error':
            log(`Server error: ${msg.message}`, 'log-error');
            setStatus('Error', 'error');
            break;
          case 'pong':
            break;
          default:
            log(`Unknown message type: ${msg.type}`, 'log-warn');
        }
      };
    }

    async function handleOffer(msg) {
      log('Received SDP offer, creating peer connection...', 'log-info');

      // Log SDP details
      const sdpLines = msg.sdp.split('\r\n');
      const codecLines = sdpLines.filter(l => l.startsWith('a=rtpmap:') || l.startsWith('a=fmtp:'));
      codecLines.forEach(l => log(`  SDP: ${l}`, 'log-data'));

      // Create RTCPeerConnection
      pc = new RTCPeerConnection({
        iceServers: [],  // No STUN/TURN needed for LAN
        bundlePolicy: 'max-bundle',
        rtcpMuxPolicy: 'require'
      });

      // Track ICE state changes
      pc.oniceconnectionstatechange = () => {
        log(`ICE state: ${pc.iceConnectionState}`, 'log-info');
        if (pc.iceConnectionState === 'connected') {
          setStatus('ICE Connected', 'connected');
        } else if (pc.iceConnectionState === 'failed') {
          log('ICE connection failed!', 'log-error');
          setStatus('ICE Failed', 'error');
        } else if (pc.iceConnectionState === 'disconnected') {
          log('ICE disconnected', 'log-warn');
          setStatus('Disconnected', 'disconnected');
        }
      };

      pc.onconnectionstatechange = () => {
        log(`Connection state: ${pc.connectionState}`, 'log-info');
      };

      pc.onsignalingstatechange = () => {
        log(`Signaling state: ${pc.signalingState}`, 'log-data');
      };

      // Handle ICE candidates
      pc.onicecandidate = (event) => {
        if (event.candidate) {
          log(`Local ICE candidate: ${event.candidate.candidate.substring(0, 60)}...`, 'log-data');
          ws.send(JSON.stringify({
            type: 'icecandidate',
            session_id: sessionId,
            candidate: event.candidate.candidate,
            sdpMid: event.candidate.sdpMid,
            sdpMLineIndex: event.candidate.sdpMLineIndex
          }));
        } else {
          log('ICE gathering complete', 'log-success');
        }
      };

      pc.onicegatheringstatechange = () => {
        log(`ICE gathering state: ${pc.iceGatheringState}`, 'log-data');
      };

      // Handle remote tracks
      pc.ontrack = (event) => {
        log(`Remote track received: kind=${event.track.kind} id=${event.track.id}`, 'log-success');
        const video = document.getElementById('video');
        if (event.streams && event.streams[0]) {
          video.srcObject = event.streams[0];
          log('Attached stream to video element', 'log-success');
        } else {
          // Create a new MediaStream if not provided
          let stream = video.srcObject;
          if (!stream) {
            stream = new MediaStream();
            video.srcObject = stream;
          }
          stream.addTrack(event.track);
          log('Added track to video element', 'log-success');
        }

        event.track.onunmute = () => log(`Track unmuted: ${event.track.kind}`, 'log-success');
        event.track.onmute = () => log(`Track muted: ${event.track.kind}`, 'log-warn');
        event.track.onended = () => log(`Track ended: ${event.track.kind}`, 'log-warn');
      };

      // Set remote description (offer)
      try {
        await pc.setRemoteDescription(new RTCSessionDescription({
          type: 'offer',
          sdp: msg.sdp
        }));
        log('Remote description set (offer)', 'log-success');
      } catch (e) {
        log(`Failed to set remote description: ${e.message}`, 'log-error');
        return;
      }

      // Create and send answer
      try {
        const answer = await pc.createAnswer();
        await pc.setLocalDescription(answer);
        log('Local description set (answer)', 'log-success');

        ws.send(JSON.stringify({
          type: 'answer',
          session_id: sessionId,
          sdp: answer.sdp
        }));
        log('Sent SDP answer to server', 'log-success');

        // Log answer SDP codec info
        const answerLines = answer.sdp.split('\r\n');
        const answerCodecs = answerLines.filter(l => l.startsWith('a=rtpmap:') || l.startsWith('a=fmtp:'));
        answerCodecs.forEach(l => log(`  Answer SDP: ${l}`, 'log-data'));
      } catch (e) {
        log(`Failed to create answer: ${e.message}`, 'log-error');
      }
    }

    async function handleRemoteIceCandidate(msg) {
      if (!pc) return;
      try {
        await pc.addIceCandidate(new RTCIceCandidate({
          candidate: msg.candidate,
          sdpMid: msg.sdpMid,
          sdpMLineIndex: msg.sdpMLineIndex
        }));
        log(`Added remote ICE candidate`, 'log-data');
      } catch (e) {
        log(`Failed to add ICE candidate: ${e.message}`, 'log-error');
      }
    }

    function startStatsPolling() {
      if (statsInterval) clearInterval(statsInterval);
      prevBytesReceived = 0;
      prevTimestamp = 0;

      statsInterval = setInterval(async () => {
        if (!pc) return;
        const stats = await pc.getStats();
        stats.forEach(report => {
          if (report.type === 'inbound-rtp' && report.kind === 'video') {
            // Resolution
            if (report.frameWidth && report.frameHeight) {
              document.getElementById('statRes').textContent = `${report.frameWidth}x${report.frameHeight}`;
            }
            // Frames
            if (report.framesReceived !== undefined) {
              document.getElementById('statFrames').textContent = report.framesReceived;
            }
            // Bitrate
            if (report.bytesReceived !== undefined && report.timestamp) {
              if (prevTimestamp > 0) {
                const dt = (report.timestamp - prevTimestamp) / 1000;
                const dBytes = report.bytesReceived - prevBytesReceived;
                const kbps = Math.round((dBytes * 8) / dt / 1000);
                document.getElementById('statBitrate').textContent = `${kbps} kbps`;
              }
              prevBytesReceived = report.bytesReceived;
              prevTimestamp = report.timestamp;
            }
            // Codec
            if (report.codecId) {
              stats.forEach(r => {
                if (r.id === report.codecId && r.mimeType) {
                  document.getElementById('statCodec').textContent = r.mimeType;
                }
              });
            }
          }
        });
      }, 1000);
    }

    async function stopStream() {
      const host = document.getElementById('host').value;
      const monitorId = document.getElementById('monitorId').value;

      log('Stopping stream...', 'log-warn');

      if (statsInterval) {
        clearInterval(statsInterval);
        statsInterval = null;
      }

      if (pc) {
        pc.close();
        pc = null;
        log('Peer connection closed', 'log-info');
      }

      if (ws) {
        ws.close();
        ws = null;
        log('WebSocket closed', 'log-info');
      }

      // Stop server-side session
      try {
        await fetch(`http://${host}/api/v3/live/${monitorId}/stop`, { method: 'DELETE' });
        log('Server session stopped', 'log-success');
      } catch (e) {
        log(`Failed to stop server session: ${e.message}`, 'log-warn');
      }

      document.getElementById('video').srcObject = null;
      sessionId = null;
      setStatus('Disconnected', 'disconnected');
      resetButtons();

      // Reset stats
      document.getElementById('statRes').textContent = '-';
      document.getElementById('statFrames').textContent = '-';
      document.getElementById('statBitrate').textContent = '-';
      document.getElementById('statCodec').textContent = '-';
    }

    function resetButtons() {
      document.getElementById('btnStart').disabled = false;
      document.getElementById('btnStop').disabled = true;
    }

    // Keepalive ping
    setInterval(() => {
      if (ws && ws.readyState === WebSocket.OPEN) {
        ws.send(JSON.stringify({ type: 'ping' }));
      }
    }, 15000);
  </script>
</body>
</html>