LINXD-2180: Added recordings

.gitignore

@@ -0,0 +1 @@
+/node_modules

README.md

@@ -1,2 +1,29 @@
-Generate keys command:
-openssl req -newkey rsa:2048 -new -nodes -x509 -days 3650 -keyout key.pem -out cert.pem
+# Video server
+
+
+### Development
+
+##### To start in development mode you must:
+1. Install the dependencies `npm install`.
+2. Run the `npm start:dev` command to start the server in dev mode.
+(Any change will trigger a refresh of the server)
+
+
+### Production
+
+##### To start in production mode you must:
+1. Install the dependencies `npm install`.
+2. Run the `npm start:prod` command to start the server in production mode.
+(To connect to the terminal, use `pm2 log video-server`)
+
+---
+
+- The server will start by default on port 3000, and the ssl certificates will have to be configured
+- The web client can be accessed using the /sfu path
+ex: http://localhost:3000/sfu/?assetId=1&&accountId=1&producer=true&assetName=Adi&assetType=linx
+assetId = asset id of the unit on which you are doing the test
+accountId = account id of the unit on which you are doing the test
+producer = it will always be true because you are the producer
+(it's possible to put false, but then you have to have another client with producer true)
+assetName = asset name of the unit on which you are doing the test
+assetType = asset type of the unit on which you are doing the test

app.js

@@ -14,8 +14,11 @@ import fs from 'fs'
 import path from 'path'
 const __dirname = path.resolve()
 
+// const FFmpegStatic = require("ffmpeg-static")
+import FFmpegStatic from 'ffmpeg-static'
 import Server from 'socket.io'
 import mediasoup, { getSupportedRtpCapabilities } from 'mediasoup'
+import Process from 'child_process'
 
 let worker
 let router = {}
@@ -42,6 +45,257 @@ httpsServer.listen(process.env.PORT, () => {
   console.log('Listening on port:', process.env.PORT)
 })
 
+const startRecordingFfmpeg = () => {
+  // Return a Promise that can be awaited
+  let recResolve;
+  const promise = new Promise((res, _rej) => {
+    recResolve = res;
+  });
+
+  // const useAudio = audioEnabled();
+  // const useVideo = videoEnabled();
+  // const useH264 = h264Enabled();
+
+  // const cmdProgram = "ffmpeg"; // Found through $PATH
+  const cmdProgram = FFmpegStatic; // From package "ffmpeg-static"
+
+  let cmdInputPath = `${__dirname}/recording/input-vp8.sdp`;
+  let cmdOutputPath = `${__dirname}/recording/output-ffmpeg-vp8.webm`;
+  let cmdCodec = "";
+  let cmdFormat = "-f webm -flags +global_header";
+
+  // Ensure correct FFmpeg version is installed
+  const ffmpegOut = Process.execSync(cmdProgram + " -version", {
+    encoding: "utf8",
+  });
+  const ffmpegVerMatch = /ffmpeg version (\d+)\.(\d+)\.(\d+)/.exec(ffmpegOut);
+  let ffmpegOk = false;
+  if (ffmpegOut.startsWith("ffmpeg version git")) {
+    // Accept any Git build (it's up to the developer to ensure that a recent
+    // enough version of the FFmpeg source code has been built)
+    ffmpegOk = true;
+  } else if (ffmpegVerMatch) {
+    const ffmpegVerMajor = parseInt(ffmpegVerMatch[1], 10);
+    if (ffmpegVerMajor >= 4) {
+      ffmpegOk = true;
+    }
+  }
+
+  if (!ffmpegOk) {
+    console.error("FFmpeg >= 4.0.0 not found in $PATH; please install it");
+    process.exit(1);
+  }
+
+  // if (useAudio) {
+    // cmdCodec += " -map 0:a:0 -c:a copy";
+  // }
+  // if (useVideo) {
+    cmdCodec += " -map 0:v:0 -c:v copy";
+
+    // if (useH264) {
+      cmdInputPath = `${__dirname}/recording/input-h264.sdp`;
+      cmdOutputPath = `${__dirname}/recording/output-ffmpeg-h264.mp4`;
+
+      // "-strict experimental" is required to allow storing
+      // OPUS audio into MP4 container
+      cmdFormat = "-f mp4 -strict experimental";
+  //   }
+  // }
+
+  // Run process
+  const cmdArgStr = [
+    "-nostdin",
+    "-protocol_whitelist file,rtp,udp",
+    "-loglevel debug",
+    "-analyzeduration 5M",
+    "-probesize 5M",
+    "-fflags +genpts",
+    `-i ${cmdInputPath}`,
+    cmdCodec,
+    cmdFormat,
+    `-y ${cmdOutputPath}`,
+  ]
+    .join(" ")
+    .trim();
+
+  console.log('💗', cmdCodec);
+  console.log(`Run command: ${cmdProgram} ${cmdArgStr}`);
+
+  let recProcess = Process.spawn(cmdProgram, cmdArgStr.split(/\s+/));
+  global.recProcess = recProcess;
+
+  recProcess.on("error", (err) => {
+    console.error("Recording process error:", err);
+  });
+
+  recProcess.on("exit", (code, signal) => {
+    console.log("Recording process exit, code: %d, signal: %s", code, signal);
+
+    global.recProcess = null;
+    stopMediasoupRtp();
+
+    if (!signal || signal === "SIGINT") {
+      console.log("Recording stopped");
+    } else {
+      console.warn(
+        "Recording process didn't exit cleanly, output file might be corrupt"
+      );
+    }
+  });
+
+  // FFmpeg writes its logs to stderr
+  recProcess.stderr.on("data", (chunk) => {
+    chunk
+      .toString()
+      .split(/\r?\n/g)
+      .filter(Boolean) // Filter out empty strings
+      .forEach((line) => {
+        console.log(line);
+        if (line.startsWith("ffmpeg version")) {
+          setTimeout(() => {
+            recResolve();
+          }, 1000);
+        }
+      });
+  });
+
+  return promise;
+}
+
+const startRecordingGstreamer = () => {
+  // Return a Promise that can be awaited
+  let recResolve;
+  const promise = new Promise((res, _rej) => {
+    recResolve = res;
+  });
+
+  // const useAudio = audioEnabled();
+  // const useVideo = videoEnabled();
+  // const useH264 = h264Enabled();
+
+  let cmdInputPath = `${__dirname}/recording/input-vp8.sdp`;
+  let cmdOutputPath = `${__dirname}/recording/output-gstreamer-vp8.webm`;
+  let cmdMux = "webmmux";
+  let cmdAudioBranch = "";
+  let cmdVideoBranch = "";
+
+  // if (useAudio) {
+  //   // prettier-ignore
+  //   cmdAudioBranch =
+  //     "demux. ! queue \
+  //     ! rtpopusdepay \
+  //     ! opusparse \
+  //     ! mux.";
+  // }
+
+  // if (useVideo) {
+  //   if (useH264) {
+      cmdInputPath = `${__dirname}/recording/input-h264.sdp`;
+      cmdOutputPath = `${__dirname}/recording/output-gstreamer-h264.mp4`;
+      cmdMux = `mp4mux faststart=true faststart-file=${cmdOutputPath}.tmp`;
+
+      // prettier-ignore
+      cmdVideoBranch =
+        "demux. ! queue \
+        ! rtph264depay \
+        ! h264parse \
+        ! mux.";
+  //   } else {
+  //     // prettier-ignore
+  //     cmdVideoBranch =
+  //       "demux. ! queue \
+  //       ! rtpvp8depay \
+  //       ! mux.";
+  //   }
+  // }
+
+  // Run process
+  const cmdProgram = "gst-launch-1.0"; // Found through $PATH
+  const cmdArgStr = [
+    "--eos-on-shutdown",
+    `filesrc location=${cmdInputPath}`,
+    "! sdpdemux timeout=0 name=demux",
+    `${cmdMux} name=mux`,
+    `! filesink location=${cmdOutputPath}`,
+    cmdAudioBranch,
+    cmdVideoBranch,
+  ]
+    .join(" ")
+    .trim();
+
+  console.log(
+    `Run command: ${cmdProgram} ${cmdArgStr}`
+  );
+
+  let recProcess = Process.spawn(cmdProgram, cmdArgStr.split(/\s+/));
+  global.recProcess = recProcess;
+
+  recProcess.on("error", (err) => {
+    console.error("Recording process error:", err);
+  });
+
+  recProcess.on("exit", (code, signal) => {
+    console.log("Recording process exit, code: %d, signal: %s", code, signal);
+
+    global.recProcess = null;
+    stopMediasoupRtp();
+
+    if (!signal || signal === "SIGINT") {
+      console.log("Recording stopped");
+    } else {
+      console.warn(
+        "Recording process didn't exit cleanly, output file might be corrupt"
+      );
+    }
+  });
+
+  // GStreamer writes some initial logs to stdout
+  recProcess.stdout.on("data", (chunk) => {
+    chunk
+      .toString()
+      .split(/\r?\n/g)
+      .filter(Boolean) // Filter out empty strings
+      .forEach((line) => {
+        console.log(line);
+        if (line.startsWith("Setting pipeline to PLAYING")) {
+          setTimeout(() => {
+            recResolve();
+          }, 1000);
+        }
+      });
+  });
+
+  // GStreamer writes its progress logs to stderr
+  recProcess.stderr.on("data", (chunk) => {
+    chunk
+      .toString()
+      .split(/\r?\n/g)
+      .filter(Boolean) // Filter out empty strings
+      .forEach((line) => {
+        console.log(line);
+      });
+  });
+
+  return promise;
+}
+
+function stopMediasoupRtp() {
+  console.log("Stop mediasoup RTP transport and consumer");
+
+  // const useAudio = audioEnabled();
+  // const useVideo = videoEnabled();
+
+  // if (useAudio) {
+  //   global.mediasoup.rtp.audioConsumer.close();
+  //   global.mediasoup.rtp.audioTransport.close();
+  // }
+
+  // if (useVideo) {
+  //   global.mediasoup.rtp.videoConsumer.close();
+  //   global.mediasoup.rtp.videoTransport.close();
+  // }
+}
+
 const io = new Server(httpsServer)
 
 // socket.io namespace (could represent a room?)
@@ -58,8 +312,8 @@ const peers = io.of('/mediasoup')
 
 const createWorker = async () => {
   worker = await mediasoup.createWorker({
-    rtcMinPort: 2000,
-    rtcMaxPort: 2020,
+    rtcMinPort: 32256,
+    rtcMaxPort: 65535,
   })
   console.log(`[createWorker] worker pid ${worker.pid}`)
 
@@ -81,17 +335,31 @@ worker = createWorker()
 // https://github.com/versatica/mediasoup/blob/v3/src/supportedRtpCapabilities.ts
 const mediaCodecs = [
   {
-    kind: 'audio',
-    mimeType: 'audio/opus',
+    kind: "audio",
+    mimeType: "audio/opus",
+    preferredPayloadType: 111,
     clockRate: 48000,
     channels: 2,
+    parameters: {
+      minptime: 10,
+      useinbandfec: 1,
+    },
   },
   {
-    kind: 'video',
-    mimeType: 'video/VP8',
+    kind: "video",
+    mimeType: "video/VP8",
+    preferredPayloadType: 96,
+    clockRate: 90000,
+  },
+  {
+    kind: "video",
+    mimeType: "video/H264",
+    preferredPayloadType: 125,
     clockRate: 90000,
     parameters: {
-      'x-google-start-bitrate': 1000,
+      "level-asymmetry-allowed": 1,
+      "packetization-mode": 1,
+      "profile-level-id": "42e01f",
     },
   },
 ]
@@ -109,6 +377,8 @@ peers.on('connection', async socket => {
   })
 
   socket.on('createRoom', async ({ callId }, callback) => {
+    console.log('[createRoom] callId', callId);
+    console.log('Router length:', Object.keys(router).length);
     if (router[callId] === undefined) {
       // worker.createRouter(options)
       // options = { mediaCodecs, appData }
@@ -147,7 +417,7 @@ peers.on('connection', async socket => {
   })
 
   // see client's socket.emit('transport-produce', ...)
-  socket.on('transport-produce', async ({ kind, rtpParameters, appData }, callback) => {
+  socket.on('transport-produce', async ({ kind, rtpParameters, callId }, callback) => {
     // call produce based on the prameters from the client
     producer = await producerTransport.produce({
       kind,
@@ -157,14 +427,65 @@ peers.on('connection', async socket => {
     console.log(`[transport-produce] Producer ID: ${producer.id} | kind: ${producer.kind}`)
 
     producer.on('transportclose', () => {
-      console.log('transport for this producer closed ')
+      console.log('transport for this producer closed', callId)
+      
+      // https://mediasoup.org/documentation/v3/mediasoup/api/#producer-close
       producer.close()
+
+      // https://mediasoup.org/documentation/v3/mediasoup/api/#router-close
+      router[callId].close()
+      delete router[callId]
     })
 
     // Send back to the client the Producer's id
     callback({
       id: producer.id
     })
+
+
+    console.log('🔴', callId);
+
+    const rtpTransport = await router[callId].createPlainTransport({
+      comedia: false,
+      rtcpMux: false,
+      listenIp: { ip: "127.0.0.1", announcedIp: null }
+    });
+    await rtpTransport.connect({
+      ip: "127.0.0.1",
+      port: 5006,
+      rtcpPort: 5007,
+    });
+
+    console.log(
+      "mediasoup VIDEO RTP SEND transport connected: %s:%d <--> %s:%d (%s)",
+      rtpTransport.tuple.localIp,
+      rtpTransport.tuple.localPort,
+      rtpTransport.tuple.remoteIp,
+      rtpTransport.tuple.remotePort,
+      rtpTransport.tuple.protocol
+    );
+
+    console.log(
+      "mediasoup VIDEO RTCP SEND transport connected: %s:%d <--> %s:%d (%s)",
+      rtpTransport.rtcpTuple.localIp,
+      rtpTransport.rtcpTuple.localPort,
+      rtpTransport.rtcpTuple.remoteIp,
+      rtpTransport.rtcpTuple.remotePort,
+      rtpTransport.rtcpTuple.protocol
+    );
+
+    const rtpConsumer = await rtpTransport.consume({
+      // producerId: global.mediasoup.webrtc.videoProducer.id,
+      producerId: producer.id,
+      // rtpCapabilities: router.rtpCapabilities,
+      rtpCapabilities: router[callId].rtpCapabilities,
+      paused: true,
+    });
+    // console.log('🟡 producerId:', producer.id, 'rtpCapabilities:', router[callId].rtpCapabilities, 'paused:', true);
+    await startRecordingFfmpeg();
+    // await startRecordingGstreamer();
+    rtpConsumer.resume();
+
   })
 
   // see client's socket.emit('transport-recv-connect', ...)
@@ -175,6 +496,7 @@ peers.on('connection', async socket => {
 
   socket.on('consume', async ({ rtpCapabilities, callId }, callback) => {
     try {
+      console.log('consume', rtpCapabilities, callId);
       // check if the router can consume the specified producer
       if (router[callId].canConsume({
         producerId: producer.id,
@@ -188,11 +510,17 @@ peers.on('connection', async socket => {
         })
 
         consumer.on('transportclose', () => {
-          console.log('transport close from consumer')
+          console.log('transport close from consumer', callId)
+          // closeRoom(callId)
+          delete router[callId]
         })
 
         consumer.on('producerclose', () => {
-          console.log('producer of consumer closed')
+          console.log('producer of consumer closed', callId)
+          
+          // https://mediasoup.org/documentation/v3/mediasoup/api/#router-close
+          router[callId].close()
+          delete router[callId]
         })
 
         // from the consumer extract the following params
@@ -225,6 +553,7 @@ peers.on('connection', async socket => {
 
 const createWebRtcTransportLayer = async (callId, callback) => {
   try {
+    console.log('[createWebRtcTransportLayer] callId', callId);
     // https://mediasoup.org/documentation/v3/mediasoup/api/#WebRtcTransportOptions
     const webRtcTransport_options = {
       listenIps: [
@@ -236,8 +565,12 @@ const createWebRtcTransportLayer = async (callId, callback) => {
       enableUdp: true,
       enableTcp: true,
       preferUdp: true,
+      initialAvailableOutgoingBitrate: 300000
     }
 
+    // console.log('webRtcTransport_options', webRtcTransport_options);
+    // console.log('router', router, '| router[callId]', router[callId]);
+    
     // https://mediasoup.org/documentation/v3/mediasoup/api/#router-createWebRtcTransport
     let transport = await router[callId].createWebRtcTransport(webRtcTransport_options)
     console.log(`callId: ${callId} | transport id: ${transport.id}`)
@@ -252,20 +585,25 @@ const createWebRtcTransportLayer = async (callId, callback) => {
       console.log('transport closed')
     })
 
-    // send back to the client the following prameters
-    callback({
-      // https://mediasoup.org/documentation/v3/mediasoup-client/api/#TransportOptions
-      params: {
+    const params = {
       id: transport.id,
       iceParameters: transport.iceParameters,
       iceCandidates: transport.iceCandidates,
       dtlsParameters: transport.dtlsParameters,
     }
+
+    console.log('params', params);
+
+    // send back to the client the following prameters
+    callback({
+      // https://mediasoup.org/documentation/v3/mediasoup-client/api/#TransportOptions
+      params
     })
 
     return transport
 
   } catch (error) {
+    console.log('[createWebRtcTransportLayer] ERROR', JSON.stringify(error));
     callback({
       params: {
         error: error

package.json

@@ -5,7 +5,8 @@
   "main": "app.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "start": "nodemon app.js",
+    "start:dev": "nodemon app.ts",
+    "start:prod": "pm2 start ./app.js -n video-server",
     "watch": "watchify public/index.js -o public/bundle.js -v"
   },
   "keywords": [],
@@ -13,18 +14,22 @@
   "license": "ISC",
   "type": "module",
   "dependencies": {
+    "@types/express": "^4.17.13",
     "dotenv": "^16.0.1",
     "express": "^4.18.1",
+    "ffmpeg-static": "^5.0.2",
     "httpolyglot": "^0.1.2",
     "mediasoup": "^3.10.4",
     "mediasoup-client": "^3.6.54",
+    "parcel": "^2.7.0",
     "socket.io": "^2.0.3",
-    "socket.io-client": "^2.0.3",
-    "nodemon": "^2.0.19",
-    "watchify": "^4.0.0"
+    "socket.io-client": "^2.0.3"
   },
   "devDependencies": {
     "nodemon": "^2.0.19",
+    "pm2": "^5.2.0",
+    "ts-node": "^10.9.1",
+    "ts-node-dev": "^2.0.0",
     "watchify": "^4.0.0"
   }
 }

public/config.js

@@ -1,4 +1,5 @@
 module.exports = {
   hubAddress: 'https://hub.dev.linx.safemobile.com/',
-  mediasoupAddress: 'https://video.safemobile.org/mediasoup',
+  // mediasoupAddress: 'https://video.safemobile.org/mediasoup',
+  mediasoupAddress: 'http://localhost:3000/mediasoup',
 }

public/index.html

@@ -21,6 +21,14 @@
             display: flex;
             justify-content: center;
         }
+
+        #closeCallBtn {
+            padding: 5;
+            background-color: papayawhip;
+            display: flex;
+            justify-content: center;
+            width: 736px;
+        }
     </style>
   </head>
   <body>
@@ -55,9 +63,6 @@
                                 <button id="btnRecvSendTransport">Consume</button>
                             </div>
                         </td>
-                        <td class="remoteColumn">
-                            <div id="videoContainer"></div>
-                        </td>
                     </tr>
                     <!-- <tr>
                         <td colspan="2">
@@ -85,6 +90,9 @@
                     </tr> -->
                 </tbody>
             </table>
+            <div id="closeCallBtn">
+                <button id="btnCloseCall" disabled>Close Call</button>
+            </div>
         </div>
     </body>
   </body>

public/index.js

@@ -6,6 +6,8 @@ console.log('[CONFIG]', config);
 
 const ASSET_ID = parseInt(urlParams.get('assetId')) || null;
 const ACCOUNT_ID = parseInt(urlParams.get('accountId')) || null;
+const ASSET_NAME = urlParams.get('assetName') || null;
+const ASSET_TYPE = urlParams.get('assetType') || null;
 let callId = parseInt(urlParams.get('callId')) || null;
 const IS_PRODUCER = urlParams.get('producer') === 'true' ? true : false
 console.log('[URL] ASSET_ID', ASSET_ID, '| ACCOUNT_ID', ACCOUNT_ID, '| callId', callId, ' | IS_PRODUCER', IS_PRODUCER)
@@ -15,7 +17,12 @@ hub = io(config.hubAddress)
 
 const connectToMediasoup = () => {
 
-  socket = io(config.mediasoupAddress)
+  socket = io(config.mediasoupAddress, {
+    reconnection: true,
+    reconnectionDelay: 1000,
+    reconnectionDelayMax : 5000,
+    reconnectionAttempts: Infinity
+  })
 
   socket.on('connection-success', ({ _socketId, existsProducer }) => {
     console.log(`[MEDIA] ${config.mediasoupAddress} | connected: ${socket.connected} | existsProducer: ${existsProducer}`)
@@ -39,21 +46,26 @@ if (IS_PRODUCER === true) {
         asset_id: ASSET_ID,
         account_id: ACCOUNT_ID,
       })
-    );
+    )
   
     hub.on('video', (data) => {
       const parsedData = JSON.parse(data);
+
+      if (parsedData.type === 'notify-request') {
       console.log('video', parsedData)
       originAssetId = parsedData.origin_asset_id;
-      originAssetName = parsedData.origin_asset_name;
-      originAssetTypeName = parsedData.origin_asset_type_name;
+      // originAssetName = parsedData.origin_asset_name;
+      // originAssetTypeName = parsedData.origin_asset_type_name;
       callId = parsedData.video_call_id;
   
-      console.log('IS_PRODUCER', IS_PRODUCER, 'callId', callId);
-      
-      if (parsedData.type === 'notify-request' && IS_PRODUCER) {
+        console.log('[VIDEO] notify-request | IS_PRODUCER', IS_PRODUCER, 'callId', callId);
         getLocalStream()
       }
+
+      if (parsedData.type === 'notify-end') {
+        console.log('[VIDEO] notify-end | IS_PRODUCER', IS_PRODUCER, 'callId', callId);
+        resetCallSettings()
+      }
     })
   })
 
@@ -79,8 +91,8 @@ let consumerTransport
 let producer
 let consumer
 let originAssetId
-let originAssetName
-let originAssetTypeName
+// let originAssetName = 'Adi'
+// let originAssetTypeName = 'linx'
 
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#ProducerOptions
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#transport-produce
@@ -110,6 +122,7 @@ let params = {
 }
 
 const streamSuccess = (stream) => {
+  console.log('[streamSuccess]');
   localVideo.srcObject = stream
   const track = stream.getVideoTracks()[0]
   params = {
@@ -136,15 +149,17 @@ const getLocalStream = () => {
   })
   .then(streamSuccess)
   .catch(error => {
-    console.log(error.message)
+    console.log('getLocalStream', error)
   })
 }
 
 const goConnect = () => {
+  console.log('[goConnect] device:', device);
   device === undefined ? getRtpCapabilities() : goCreateTransport()
 }
 
 const goCreateTransport = () => {
+  console.log('[goCreateTransport] IS_PRODUCER:', IS_PRODUCER);
   IS_PRODUCER ? createSendTransport() : createRecvTransport()
 }
 
@@ -152,6 +167,7 @@ const goCreateTransport = () => {
 // server side to send/recive media
 const createDevice = async () => {
   try {
+    console.log('[createDevice]');
     device = new mediasoupClient.Device()
 
     // https://mediasoup.org/documentation/v3/mediasoup-client/api/#device-load
@@ -174,6 +190,7 @@ const createDevice = async () => {
 }
 
 const getRtpCapabilities = () => {
+  console.log('[getRtpCapabilities]');
   // make a request to the server for Router RTP Capabilities
   // see server's socket.on('getRtpCapabilities', ...)
   // the server sends back data object which contains rtpCapabilities
@@ -227,7 +244,7 @@ const createSendTransport = () => {
     })
 
     producerTransport.on('produce', async (parameters, callback, errback) => {
-      console.log(parameters)
+      console.log('produce', parameters)
 
       try {
         // tell the server to create a Producer
@@ -237,7 +254,7 @@ const createSendTransport = () => {
         await socket.emit('transport-produce', {
           kind: parameters.kind,
           rtpParameters: parameters.rtpParameters,
-          appData: parameters.appData,
+          callId: callId
         }, ({ id }) => {
           // Tell the transport that parameters were transmitted and provide it with the
           // server side producer's id.
@@ -261,7 +278,6 @@ const connectSendTransport = async () => {
 
   producer.on('trackended', () => {
     console.log('track ended')
-
     // close video track
   })
 
@@ -275,8 +291,8 @@ const connectSendTransport = async () => {
     dest_asset_id: originAssetId || parseInt(urlParams.get('dest_asset_id')),
     type: 'notify-answer',
     origin_asset_priority: 1,
-    origin_asset_type_name: originAssetTypeName,
-    origin_asset_name: originAssetName,
+    origin_asset_type_name: ASSET_TYPE,
+    origin_asset_name: ASSET_NAME,
     video_call_id: callId,
     answer: 'accepted', // answer: 'rejected'
   };
@@ -286,6 +302,10 @@ const connectSendTransport = async () => {
     'video',
     JSON.stringify(answer)
   );
+
+  // Enable Close call button
+  const closeCallBtn = document.getElementById('btnCloseCall');
+  closeCallBtn.removeAttribute('disabled');
 }
 
 const createRecvTransport = async () => {
@@ -329,6 +349,16 @@ const createRecvTransport = async () => {
   })
 }
 
+const resetCallSettings = () => {
+  localVideo.srcObject = null
+  remoteVideo.srcObject = null
+  consumer = null
+  producer = null
+  producerTransport = null
+  consumerTransport = null
+  device = undefined
+}
+
 const connectRecvTransport = async () => {
   console.log('connectRecvTransport');
   // for consumer, we need to tell the server first
@@ -365,5 +395,27 @@ const connectRecvTransport = async () => {
   })
 }
 
+const closeCall = () => {
+  console.log('closeCall');
+  
+  // Emit 'notify-end' to Hub so the consumer will know to close the video
+  const notifyEnd = {
+      origin_asset_id: ASSET_ID,
+      dest_asset_id: originAssetId || parseInt(urlParams.get('dest_asset_id')),
+      type: 'notify-end', 
+    video_call_id: callId
+  }
+  console.log('notifyEnd', notifyEnd)
+  hub.emit('video', JSON.stringify(notifyEnd))
+
+  // Disable Close call button
+  const closeCallBtn = document.getElementById('btnCloseCall')
+  closeCallBtn.setAttribute('disabled', '')
+
+  // Reset settings
+  resetCallSettings()
+}
+
 btnLocalVideo.addEventListener('click', getLocalStream)
 btnRecvSendTransport.addEventListener('click', goConnect)
+btnCloseCall.addEventListener('click', closeCall)

server/ssl/cert.pem

@@ -1,24 +1,25 @@
 -----BEGIN CERTIFICATE-----
-MIIEDzCCAvegAwIBAgIUaoTnmT3ltr9S5ysxQIXoLOHM6IYwDQYJKoZIhvcNAQEL
-BQAwgZYxCzAJBgNVBAYTAlJPMQ0wCwYDVQQIDARBTEJBMRMwEQYDVQQHDApBTEJB
-IElVTElBMRMwEQYDVQQKDApTQUZFTU9CSUxFMRIwEAYDVQQLDAlBSVJXSVpBUkQx
-DzANBgNVBAMMBlNFUkdJVTEpMCcGCSqGSIb3DQEJARYac2VyZ2l1LnRvbWFAc2Fm
-ZW1vYmlsZS5jb20wHhcNMjIwNzIwMTgwNzMzWhcNMzIwNzE3MTgwNzMzWjCBljEL
-MAkGA1UEBhMCUk8xDTALBgNVBAgMBEFMQkExEzARBgNVBAcMCkFMQkEgSVVMSUEx
-EzARBgNVBAoMClNBRkVNT0JJTEUxEjAQBgNVBAsMCUFJUldJWkFSRDEPMA0GA1UE
-AwwGU0VSR0lVMSkwJwYJKoZIhvcNAQkBFhpzZXJnaXUudG9tYUBzYWZlbW9iaWxl
-LmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL+KCJzVjXipimVc
-wYOwemwSQRsF/4qkWliZJBdgs6foCd8lFG2JUqMrHPruhOJA3Ue/5Xw3HXi8s34X
-EDVxRqZEOC9KSZg15Z/9dtF83PrShR0TslqS+JIfcNHBDryYihzuMoQLLucqBVzF
-dj+RKRTtor8WesNILa4ivGnr55Tq26qAVAv6CV6tyGRpHSfAOCdjr9ViLHQsNvFd
-+NBcCIbABAWyXfzGLl4iEdcu7zZxTE2Q+MRURTPJNIcDLrr2QL7VF/7vbp7iuKUE
-sPi/iXyZtyMTkjgyQA/OSY1JXWVSWtIYTHumbx1xQ/jR3CCwTPxXL5aMuT6fq4eC
-7GZhodECAwEAAaNTMFEwHQYDVR0OBBYEFBWHLoyJtgWVDFIEguh3ZVcmgbGbMB8G
-A1UdIwQYMBaAFBWHLoyJtgWVDFIEguh3ZVcmgbGbMA8GA1UdEwEB/wQFMAMBAf8w
-DQYJKoZIhvcNAQELBQADggEBAAOzDIR4K2BKKoD/retoVNyFtHSKXs2FU1UIR2QP
-NJvS9GbkQW/jMYxehHJ9jxB7AVoq+ice8kyhipFYYOPRm9WEouF+BvFyQD1bhrD1
-b5kJMKOTcTuqqlRWgECrIZT/oumgujkAT6xulPu+jSbV3XyEp4rJq4E6lks1y8RG
-4hdllhfLtmE06hqBgtSVxHg4y0PgKkn0rU+2V7ZaPDc5IViGKbFo/lZI1iW3nD9Y
-UmATM2co6zImrpt/bfBByfwpdZevpEKzSilbQ06JcGEtUm90U1Qzi0YLSv40aUYD
-jSYmcpuMoI4vLSIFpPYRAIRbvEwmdwiwCd0CcPWAY98CzhQ=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 -----END CERTIFICATE-----

server/ssl/key.pem

@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQC/igic1Y14qYpl
-XMGDsHpsEkEbBf+KpFpYmSQXYLOn6AnfJRRtiVKjKxz67oTiQN1Hv+V8Nx14vLN+
-FxA1cUamRDgvSkmYNeWf/XbRfNz60oUdE7JakviSH3DRwQ68mIoc7jKECy7nKgVc
-xXY/kSkU7aK/FnrDSC2uIrxp6+eU6tuqgFQL+glerchkaR0nwDgnY6/VYix0LDbx
-XfjQXAiGwAQFsl38xi5eIhHXLu82cUxNkPjEVEUzyTSHAy669kC+1Rf+726e4ril
-BLD4v4l8mbcjE5I4MkAPzkmNSV1lUlrSGEx7pm8dcUP40dwgsEz8Vy+WjLk+n6uH
-guxmYaHRAgMBAAECggEAC3GIRTJ/EsvyUE8D4sXK8qT+jcpEc7iRC0UPAnSNF0WG
-PXY+K7MuJECBqT5R4yCj99Lvt4WldZ60jJ59IexEH8/omW6zSexCbVYb4LU4kKW+
-PTf9imrIfhZxy55groTgj4ztqLTwVvBMRLgpce/OyAjQleEWcY9g50v8/MkS23M4
-HU+KdRBBB/StI+9uSHQf5XP6nok8dRKGPE0IvAlCM5H0iran6Er0+jMlIq7TwYzX
-940h4DVf9AaUiI8UTUkvp8odtRDYNrICPRnMsm2McmpEvlhHE34/L0gLiwdaz/PZ
-xK/LvexscmfYrWjDbdoXndKsuoWmi8w3/mjXlAKSFwKBgQDKBQtp/uCVKzFn9jaA
-3v6ElUKVW0UPAS9pvH9NSZ1Fw5ZxgOieWraZ5zUVhP7DOz7uSWdleB31cN1sLLD+
-WqhCD0T6XYtwWxYNTtLiB8Pvuufp432gYula9FctC6GF+q2o5OSa6VfIaT94TfXs
-eHB7V5txx3rFu7Y7G+rpSvgGCwKBgQDyuBSGXukAEgeh3qYPMv2iE4bdT9qwLVM3
-Iq0b2LvNmBlAniSe2QXJrLGY/E/71gViRd0up16sgthkq4y/Nc7EVa3ELVXrAenV
-Zv656ArPVr/hirUSPpe7p12whk3riKziy+swyffueIw2WlA6JssM2ghdZDZlknzr
-hlAPmsPtEwKBgGIoL1KSH8b61Kehzvuw3dPHvjFZxmUy+zmR9/yyjvMNxHRj4SLI
-Cr8ewwEwvKRZjgszqUR5J31RGJTt5hXAMM7gInDPsOenqkBPE1H12fMKSpKvESQz
-yxSBcjYV16aElYphpN3MEPX0hX1Ly/jY0DZt675N4U5gFXwE5Y/y+C3fAoGBAJYG
-3ID2F3V4r4kJc4F/ljDhewI/AsDVM1OoNnI49FSviCRd2+rn4GD5Qsl6ZAIZFzjY
-UFAvGiDtu832D8h8/PJ0tzTEhQ//HcdPo3HMESp5x58kuqmtUOKoIAwl5/IHiD2j
-qBt/K6YWkyxhhKd9JRMrjfIUKF9+PYLjgYcztZlLAoGAE4KgqwduWPiOOqI5BdId
-Rq/x6JOoIVlDMKxTS4MLCrdt7RZaEOJZOZ6KDTMcTyh6uqIYQiu9eENMtZjWfA0Q
-l0p3yZjLMHh5lTVhbJTsMfp1Etut9yVZPG+7P9+XevTac/t2CNAs+xrXES/b5M8Y
-Eq7JQiVhWZZ4CGNRcQb+y34=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 -----END PRIVATE KEY-----

tsconfig.json

@@ -0,0 +1,103 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+
+    /* Language and Environment */
+    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "jsx": "preserve",                                /* Specify what JSX code is generated. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+    // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+    // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+    // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+    // "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+    /* Modules */
+    "module": "commonjs",                                /* Specify what module code is generated. */
+    // "rootDir": "./",                                  /* Specify the root folder within your source files. */
+    // "moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+    // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+    // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+    // "resolveJsonModule": true,                        /* Enable importing .json files. */
+    // "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+
+    /* JavaScript Support */
+    // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+    // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+    /* Emit */
+    // "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    // "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
+    // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+    // "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
+    // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+    // "outDir": "./",                                   /* Specify an output folder for all emitted files. */
+    // "removeComments": true,                           /* Disable emitting comments. */
+    // "noEmit": true,                                   /* Disable emitting files from a compilation. */
+    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    // "importsNotUsedAsValues": "remove",               /* Specify emit/checking behavior for imports that are only used for types. */
+    // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+    // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+    // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+    // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+    // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+    // "newLine": "crlf",                                /* Set the newline character for emitting files. */
+    // "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+    // "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+    // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+    // "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+    // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+    // "preserveValueImports": true,                     /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
+
+    /* Interop Constraints */
+    // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+    // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+
+    /* Type Checking */
+    "strict": true,                                      /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                         /* When type checking, take into account 'null' and 'undefined'. */
+    // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+    // "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+    // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+    // "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+    // "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+    // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+    // "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+    // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+    // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+    // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+    // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+    // "noUncheckedIndexedAccess": true,                 /* Add 'undefined' to a type when accessed using an index. */
+    // "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
+    // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+    // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+    // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+
+    /* Completeness */
+    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+  }
+}