test

Reviewed-on: #23
Reviewed-by: Cristi Ene <cristi.ene@safemobile.com>

app.js

@@ -13,40 +13,40 @@ try {
 }
 const mediasoup = require('mediasoup');
 
-let worker
+let worker;
 /**
  * 
  * videoCalls - Dictionary of Object(s)
  * '<callId>': {
- *  router: Router,                                            router
+ *  router: Router,
  *  initiatorAudioProducer: Producer,
  *  initiatorVideoProducer: Producer,
- *  receiverVideoProducer: Producer,                           producerVideo
- *  receiverAudioProducer: Producer,                           producerAudio
+ *  receiverVideoProducer: Producer,
+ *  receiverAudioProducer: Producer,
  *  initiatorProducerTransport: Producer Transport,
- *  receiverProducerTransport: Producer Transport,             producerTransport
- *  initiatorConsumerVideo: Consumer,                          consumerVideo
- *  initiatorConsumerAudio: Consumer,                          consumerAudio
- *  initiatorConsumerTransport: Consumer Transport             consumerTransport
- *  initiatorSockerId
- *  receiverSocketId
+ *  receiverProducerTransport: Producer Transport,
+ *  initiatorConsumerVideo: Consumer,
+ *  initiatorConsumerAudio: Consumer,
+ *  initiatorConsumerTransport: Consumer Transport
+ *  initiatorSocket
+ *  receiverSocket
  * }
  * 
  **/
-let videoCalls = {}
-let socketDetails = {}
+let videoCalls = {};
+let socketDetails = {};
 
 app.get('/', (_req, res) => {
   res.send('Hello from mediasoup app!')
-})
+});
 
-app.use('/sfu', express.static(path.join(__dirname, 'public')))
+app.use('/sfu', express.static(path.join(__dirname, 'public')));
 
 // SSL cert for HTTPS access
 const options = {
   key: fs.readFileSync(process.env.SERVER_KEY, 'utf-8'),
   cert: fs.readFileSync(process.env.SERVER_CERT, 'utf-8'),
-}
+};
 
 const httpsServer = https.createServer(options, app);
 
@@ -192,12 +192,11 @@ peers.on('connection', async socket => {
       if (callId) {
         console.log(`[createRoom] socket.id ${socket.id} callId ${callId}`);
         if (!videoCalls[callId]) {
-          console.log('[createRoom] callId', callId);
-          videoCalls[callId] = { router: await worker.createRouter({ mediaCodecs }) }
+          videoCalls[callId] = { router: await worker.createRouter({ mediaCodecs }) };
           console.log(`[createRoom] Router ID: ${videoCalls[callId].router.id}`);
-          videoCalls[callId].receiverSocketId = socket.id
+          videoCalls[callId].receiverSocket = socket;
         } else {
-          videoCalls[callId].initiatorSockerId = socket.id
+          videoCalls[callId].initiatorSocket = socket;
         }
         socketDetails[socket.id] = callId;
         // rtpCapabilities is set for callback
@@ -225,7 +224,6 @@ peers.on('connection', async socket => {
   */
   socket.on('createWebRtcTransport', async ({ sender }, callback) => {
     try {
-      console.log('🟥', socket.id, JSON.stringify(sender));
       const callId = socketDetails[socket.id];
       console.log(`[createWebRtcTransport] socket ${socket.id} | sender ${sender} | callId ${callId}`);
       if (sender) {
@@ -260,11 +258,19 @@ peers.on('connection', async socket => {
       if (typeof dtlsParameters === 'string') dtlsParameters = JSON.parse(dtlsParameters);
 
       console.log(`[transport-connect] socket ${socket.id} | callId ${callId}`);
+
       if (!isInitiator(callId, socket.id)) {
         await videoCalls[callId].receiverProducerTransport.connect({ dtlsParameters });
+        videoCalls[callId].initiatorSocket.emit('new-producer', {
+          callId
+        });
       } else {
         await videoCalls[callId].initiatorProducerTransport.connect({ dtlsParameters });
+        videoCalls[callId].receiverSocket.emit('new-producer', {
+          callId
+        });
       }
+
     } catch (error) {
       console.log(`ERROR | transport-connect | callId ${socketDetails[socket.id]} | ${error.message}`);
     }
@@ -281,6 +287,7 @@ peers.on('connection', async socket => {
       if (typeof rtpParameters === 'string') rtpParameters = JSON.parse(rtpParameters);
       
       console.log(`[transport-produce] kind: ${kind} | socket: ${socket.id} | callId: ${callId}`);
+      
       if (kind === 'video') {
         if (!isInitiator(callId, socket.id)) {
           videoCalls[callId].receiverVideoProducer = await videoCalls[callId].receiverProducerTransport.produce({
@@ -370,6 +377,7 @@ peers.on('connection', async socket => {
     try {
       const callId = socketDetails[socket.id];
       console.log(`[transport-recv-connect] socket ${socket.id} | callId ${callId}`);
+      if (typeof dtlsParameters === 'string') dtlsParameters = JSON.parse(dtlsParameters);
       // await videoCalls[callId].consumerTransport.connect({ dtlsParameters });
       if(!isInitiator(callId, socket.id)) {
         await videoCalls[callId].receiverConsumerTransport.connect({ dtlsParameters });
@@ -393,6 +401,8 @@ peers.on('connection', async socket => {
       const callId = socketDetails[socket.id];
       console.log(`[consume] socket ${socket.id} | callId ${callId} | rtpCapabilities: ${JSON.stringify(rtpCapabilities)}`);
 
+      if (typeof rtpCapabilities === 'string') rtpCapabilities = JSON.parse(rtpCapabilities);
+
       console.log('[consume] callId', callId);
       let canConsumeVideo, canConsumeAudio;
       if (isInitiator(callId, socket.id)) {
@@ -428,7 +438,8 @@ peers.on('connection', async socket => {
         callback({ videoParams, audioParams });
       } else if (!canConsumeVideo && canConsumeAudio) {
         const audioParams = await consumeAudio(callId, socket.id, rtpCapabilities)
-        callback({ videoParams: null, audioParams });
+        const data = { videoParams: null, audioParams };
+        callback(data);
       } else {
         console.log(`[consume] Can't consume | callId ${callId}`);
         callback(null);
@@ -441,22 +452,20 @@ peers.on('connection', async socket => {
 
   /*
     - Event sent by the consumer after consuming to resume the pause
-    - When consuming on consumerTransport, it is initially done with paused: true, here we will resume 
+    - When consuming on consumerTransport, it is initially done with paused: true, here we will resume
+    - For the initiator we resume the initiatorConsumerAUDIO/VIDEO and for receiver the receiverConsumerAUDIO/VIDEO
   */
-  socket.on('consumer-resume', async () => {
+  socket.on('consumer-resume',() => {
     try {
       const callId = socketDetails[socket.id];
       console.log(`[consumer-resume] callId ${callId}`)
-
       if (isInitiator(callId, socket.id)) {
-        await videoCalls[callId].initiatorConsumerVideo.resume();
-        await videoCalls[callId].initiatorConsumerAudio.resume();
+        videoCalls[callId]?.initiatorConsumerVideo?.resume();
+        videoCalls[callId]?.initiatorConsumerAudio?.resume();
       } else {
-        await videoCalls[callId].receiverConsumerVideo.resume();
-        await videoCalls[callId].receiverConsumerAudio.resume();
+        videoCalls[callId]?.receiverConsumerVideo?.resume();
+        videoCalls[callId]?.receiverConsumerAudio?.resume();
       }
-      // await videoCalls[callId].consumerVideo.resume();
-      // await videoCalls[callId].consumerAudio.resume();
     } catch (error) {
       console.log(`ERROR | consumer-resume | callId ${socketDetails[socket.id]} | ${error.message}`);
     }
@@ -577,7 +586,7 @@ const consumeAudio = async (callId, socketId, rtpCapabilities) => {
 }
 
 const isInitiator = (callId, socketId) => {
-  return (videoCalls[callId].initiatorSockerId === socketId);
+  return (videoCalls[callId]?.initiatorSocket?.id === socketId);
 }
 
 /*
@@ -605,7 +614,6 @@ const createWebRtcTransportLayer = async (callId, callback) => {
     
     // https://mediasoup.org/documentation/v3/mediasoup/api/#router-createWebRtcTransport
     let transport = await videoCalls[callId].router.createWebRtcTransport(webRtcTransport_options)
-    console.log(`callId: ${callId} | transport id: ${transport.id}`)
 
     // Handler for when DTLS(Datagram Transport Layer Security) changes
     transport.on('dtlsstatechange', dtlsState => {

build.sh

@@ -9,13 +9,19 @@ else
   ## CLEANUP
   rm -fr dist/*
 fi
+
+if [ -d "node_modules" ]; then
+  rm -fr node_modules
+fi
+
 # Install dependencies
 #npm install
 
 ## PROJECT NEEDS
 echo "Building app... from $(git rev-parse --abbrev-ref HEAD)"
 #npm run-script build
-cp -r {.env,app.js,package.json,server,public} dist/
+#cp -r {.env,app.js,package.json,server,public} dist/
+cp -r ./* dist/
 
 #Add version control for pm2
 cd dist
@@ -43,4 +49,4 @@ fi
 
 ## POST BUILD
 
-cd -
+cd -

public/bundle.js

@@ -20368,10 +20368,24 @@ 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
+let remoteVideo = document.getElementById('remoteVideo')
+remoteVideo.defaultMuted = true
+let produceAudio = false
+
 console.log('[URL] ASSET_ID', ASSET_ID, '| ACCOUNT_ID', ACCOUNT_ID, '| callId', callId, ' | IS_PRODUCER', IS_PRODUCER)
 
 console.log('🟩 config', config)
 
+produceAudioSelector = document.getElementById('produceAudio');
+produceAudioSelector.addEventListener('change', e => {
+    if(e.target.checked) {
+      produceAudio = true
+      console.log('produce audio');
+    } else {
+      produceAudio = false
+    }
+});
+
 let socket, hub
 let device
 let rtpCapabilities
@@ -20381,6 +20395,21 @@ let producerVideo
 let producerAudio
 let consumer
 let originAssetId
+let consumerVideo // local consumer video(consumer not transport)
+let consumerAudio // local consumer audio(consumer not transport)
+
+const remoteSoundControl = document.getElementById('remoteSoundControl');
+
+remoteSoundControl.addEventListener('click', function handleClick() {
+  console.log('remoteSoundControl.textContent', remoteSoundControl.textContent);
+  if (remoteSoundControl.textContent === 'Unmute') {
+    remoteVideo.muted = false
+    remoteSoundControl.textContent = 'Mute';
+  } else {
+    remoteVideo.muted = true
+    remoteSoundControl.textContent = 'Unmute';
+  }
+});
 
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#ProducerOptions
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#transport-produce
@@ -20420,10 +20449,14 @@ setTimeout(() => {
       console.log(`[MEDIA] ${config.mediasoupAddress} | connected: ${socket.connected} | existsProducer: ${existsProducer}`)
       if (!IS_PRODUCER && existsProducer && consumer === undefined) { 
         goConnect()
-        // document.getElementById('btnRecvSendTransport').click();
       }
       if (IS_PRODUCER && urlParams.get('testing') === 'true') { getLocalStream() }
     })
+
+    socket.on('new-producer', ({ callId }) => {
+      console.log(`🟢 new-producer | callId: ${callId} | Ready to consume`);
+      consume()
+    })
   }
   
   if (IS_PRODUCER === true) {
@@ -20502,7 +20535,7 @@ const streamSuccess = (stream) => {
 const getLocalStream = () => {
   console.log('[getLocalStream]');
   navigator.mediaDevices.getUserMedia({
-    audio: true,
+    audio: produceAudio ? true : false,
     video: {
       qvga : { width: { ideal: 320 }, height: { ideal: 240 } },
       vga  : { width: { ideal: 640 }, height: { ideal: 480 } },
@@ -20651,34 +20684,36 @@ const connectSendTransport = async () => {
   // this action will trigger the 'connect' and 'produce' events above
   
   // Produce video
-  producerVideo = await producerTransport.produce(videoParams)
+  let producerVideoHandler = await producerTransport.produce(videoParams)
   console.log('videoParams', videoParams);
   console.log('producerVideo', producerVideo);
 
-  producerVideo.on('trackended', () => {
+  producerVideoHandler.on('trackended', () => {
     console.log('track ended')
     // close video track
   })  
 
-  producerVideo.on('transportclose', () => {
+  producerVideoHandler.on('transportclose', () => {
     console.log('transport ended')
     // close video track
   })    
   
   // Produce audio
-  producerAudio = await producerTransport.produce(audioParams)
-  console.log('audioParams', audioParams);
-  console.log('producerAudio', producerAudio);
-
-  producerAudio.on('trackended', () => {
-    console.log('track ended')
-    // close audio track
-  })
-
-  producerAudio.on('transportclose', () => {
-    console.log('transport ended')
-    // close audio track
-  })
+  if (produceAudio) {
+    let producerAudioHandler = await producerTransport.produce(audioParams)
+    console.log('audioParams', audioParams);
+    console.log('producerAudio', producerAudio);
+  
+    producerAudioHandler.on('trackended', () => {
+      console.log('track ended')
+      // close audio track
+    })
+  
+    producerAudioHandler.on('transportclose', () => {
+      console.log('transport ended')
+      // close audio track
+    })
+  }
 
   const answer = {
     origin_asset_id: ASSET_ID,
@@ -20762,34 +20797,95 @@ const connectRecvTransport = async () => {
   await socket.emit('consume', {
     rtpCapabilities: device.rtpCapabilities,
     callId
-  }, async ({ params }) => {
-    if (params.error) {
-      console.log('Cannot Consume')
-      return
-    }
-
-    // Then consume with the local consumer transport
-    // which creates a consumer
-    consumer = await consumerTransport.consume({
-      id: params.id,
-      producerId: params.producerId,
-      kind: params.kind,
-      rtpParameters: params.rtpParameters
-    })
-
-    // destructure and retrieve the video track from the producer
-    const { track } = consumer
+  }, async ({videoParams, audioParams}) => {
+    console.log(`[consume] 🟩 videoParams`, videoParams)
+    console.log(`[consume] 🟩 audioParams`, audioParams)
+    console.log('[consume] 🟩 consumerTransport', consumerTransport)
 
     let stream = new MediaStream()
-    stream.addTrack(track)
-    // stream.removeTrack(track)
-    remoteVideo.srcObject = stream
-    socket.emit('consumer-resume')
-    console.log('consumer', consumer);
 
+    // Maybe the unit does not produce video or audio, so we must only consume what is produced
+    if (videoParams) {
+      console.log('❗ Have VIDEO stream to consume');
+      stream.addTrack(await getVideoTrask(videoParams))
+    } else {
+      console.log('❗ Don\'t have VIDEO stream to consume');
+    }
+    
+    if (audioParams) {
+      console.log('❗ Have AUDIO stream to consume');
+      let audioTrack = await getAudioTrask(audioParams)
+      stream.addTrack(audioTrack)
+    } else {
+      console.log('❗ Don\'t have AUDIO stream to consume');
+    }
+
+    socket.emit('consumer-resume')
+
+    remoteVideo.srcObject = stream
+    remoteVideo.setAttribute('autoplay', true)
+
+    remoteVideo.play()
+    .then(() => {
+      console.log('remoteVideo PLAY')
+    })
+    .catch((error) => {
+      displayError(`remoteVideo PLAY ERROR | ${error.message}`)
+    })
   })
 }
 
+const getVideoTrask = async (videoParams) => {
+  consumerVideo = await consumerTransport.consume({
+    id: videoParams.id,
+    producerId: videoParams.producerId,
+    kind: videoParams.kind,
+    rtpParameters: videoParams.rtpParameters
+  }) 
+
+  consumerVideo.on('transportclose', () => {
+    console.log('transport closed so consumer closed')
+  })
+
+  return consumerVideo.track
+}
+
+const getAudioTrask = async (audioParams) => {
+  consumerAudio = await consumerTransport.consume({
+    id: audioParams.id,
+    producerId: audioParams.producerId,
+    kind: audioParams.kind,
+    rtpParameters: audioParams.rtpParameters
+  })
+
+  consumerAudio.on('transportclose', () => {
+    console.log('transport closed so consumer closed')
+  })
+
+  const audioTrack = consumerAudio.track
+
+  audioTrack.applyConstraints({
+    audio: {
+      advanced: [
+        {
+          echoCancellation: {exact: true}
+        },
+        {
+          autoGainControl: {exact: true}
+        },
+        {
+          noiseSuppression: {exact: true}
+        }, 
+        {
+          highpassFilter: {exact: true}
+        }
+      ]
+    }
+  })
+
+  return audioTrack
+}
+
 const closeCall = () => {
   console.log('closeCall');
   

public/index.html

@@ -34,6 +34,9 @@
   <body>
     <body>
         <div id="video">
+            <legend>Client options:</legend>
+            <input type="checkbox" id="produceAudio" name="produceAudio">
+            <label for="produceAudio">Produce audio</label><br>
             <table>
                 <thead>
                     <th>Local Video</th>
@@ -43,12 +46,24 @@
                     <tr>
                         <td>
                             <div id="sharedBtns">
-                                <video id="localVideo" autoplay class="video" muted></video>
+                                <video
+                                    id="localVideo"
+                                    class="video"
+                                    autoplay
+                                    muted
+                                    playsinline
+                                ></video>
                             </div>
                         </td>
                         <td>
                             <div id="sharedBtns">
-                                <video id="remoteVideo" autoplay class="video" ></video>
+                                <video
+                                    id="remoteVideo"
+                                    class="video"
+                                    autoplay
+                                    muted
+                                    playsinline
+                                ></video>
                             </div>
                         </td>
                     </tr>
@@ -61,33 +76,10 @@
                         <td>
                             <div id="sharedBtns">
                                 <button id="btnRecvSendTransport">Consume</button>
+                                <button id="remoteSoundControl">Unmute</button>
                             </div>
                         </td>
                     </tr>
-                    <!-- <tr>
-                        <td colspan="2">
-                            <div id="sharedBtns">
-                                <button id="btnRtpCapabilities">2. Get Rtp Capabilities</button>
-                                <br />
-                                <button id="btnDevice">3. Create Device</button>
-                            </div>
-                        </td>
-                    </tr>
-                    <tr>
-                        <td>
-                            <div id="sharedBtns">
-                                <button id="btnCreateSendTransport">4. Create Send Transport</button>
-                                <br />
-                                <button id="btnConnectSendTransport">5. Connect Send Transport & Produce</button></td>
-                            </div>
-                        <td>
-                            <div id="sharedBtns">
-                                <button id="btnRecvSendTransport">6. Create Recv Transport</button>
-                                <br />
-                                <button id="btnConnectRecvTransport">7. Connect Recv Transport & Consume</button>
-                            </div>
-                        </td>
-                    </tr> -->
                 </tbody>
             </table>
             <div id="closeCallBtn">

public/index.js

@@ -10,10 +10,24 @@ 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
+let remoteVideo = document.getElementById('remoteVideo')
+remoteVideo.defaultMuted = true
+let produceAudio = false
+
 console.log('[URL] ASSET_ID', ASSET_ID, '| ACCOUNT_ID', ACCOUNT_ID, '| callId', callId, ' | IS_PRODUCER', IS_PRODUCER)
 
 console.log('🟩 config', config)
 
+produceAudioSelector = document.getElementById('produceAudio');
+produceAudioSelector.addEventListener('change', e => {
+    if(e.target.checked) {
+      produceAudio = true
+      console.log('produce audio');
+    } else {
+      produceAudio = false
+    }
+});
+
 let socket, hub
 let device
 let rtpCapabilities
@@ -23,6 +37,21 @@ let producerVideo
 let producerAudio
 let consumer
 let originAssetId
+let consumerVideo // local consumer video(consumer not transport)
+let consumerAudio // local consumer audio(consumer not transport)
+
+const remoteSoundControl = document.getElementById('remoteSoundControl');
+
+remoteSoundControl.addEventListener('click', function handleClick() {
+  console.log('remoteSoundControl.textContent', remoteSoundControl.textContent);
+  if (remoteSoundControl.textContent === 'Unmute') {
+    remoteVideo.muted = false
+    remoteSoundControl.textContent = 'Mute';
+  } else {
+    remoteVideo.muted = true
+    remoteSoundControl.textContent = 'Unmute';
+  }
+});
 
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#ProducerOptions
 // https://mediasoup.org/documentation/v3/mediasoup-client/api/#transport-produce
@@ -62,10 +91,14 @@ setTimeout(() => {
       console.log(`[MEDIA] ${config.mediasoupAddress} | connected: ${socket.connected} | existsProducer: ${existsProducer}`)
       if (!IS_PRODUCER && existsProducer && consumer === undefined) { 
         goConnect()
-        // document.getElementById('btnRecvSendTransport').click();
       }
       if (IS_PRODUCER && urlParams.get('testing') === 'true') { getLocalStream() }
     })
+
+    socket.on('new-producer', ({ callId }) => {
+      console.log(`🟢 new-producer | callId: ${callId} | Ready to consume`);
+      consume()
+    })
   }
   
   if (IS_PRODUCER === true) {
@@ -144,7 +177,7 @@ const streamSuccess = (stream) => {
 const getLocalStream = () => {
   console.log('[getLocalStream]');
   navigator.mediaDevices.getUserMedia({
-    audio: true,
+    audio: produceAudio ? true : false,
     video: {
       qvga : { width: { ideal: 320 }, height: { ideal: 240 } },
       vga  : { width: { ideal: 640 }, height: { ideal: 480 } },
@@ -293,34 +326,36 @@ const connectSendTransport = async () => {
   // this action will trigger the 'connect' and 'produce' events above
   
   // Produce video
-  producerVideo = await producerTransport.produce(videoParams)
+  let producerVideoHandler = await producerTransport.produce(videoParams)
   console.log('videoParams', videoParams);
   console.log('producerVideo', producerVideo);
 
-  producerVideo.on('trackended', () => {
+  producerVideoHandler.on('trackended', () => {
     console.log('track ended')
     // close video track
   })  
 
-  producerVideo.on('transportclose', () => {
+  producerVideoHandler.on('transportclose', () => {
     console.log('transport ended')
     // close video track
   })    
   
   // Produce audio
-  producerAudio = await producerTransport.produce(audioParams)
-  console.log('audioParams', audioParams);
-  console.log('producerAudio', producerAudio);
-
-  producerAudio.on('trackended', () => {
-    console.log('track ended')
-    // close audio track
-  })
-
-  producerAudio.on('transportclose', () => {
-    console.log('transport ended')
-    // close audio track
-  })
+  if (produceAudio) {
+    let producerAudioHandler = await producerTransport.produce(audioParams)
+    console.log('audioParams', audioParams);
+    console.log('producerAudio', producerAudio);
+  
+    producerAudioHandler.on('trackended', () => {
+      console.log('track ended')
+      // close audio track
+    })
+  
+    producerAudioHandler.on('transportclose', () => {
+      console.log('transport ended')
+      // close audio track
+    })
+  }
 
   const answer = {
     origin_asset_id: ASSET_ID,
@@ -404,36 +439,95 @@ const connectRecvTransport = async () => {
   await socket.emit('consume', {
     rtpCapabilities: device.rtpCapabilities,
     callId
-  }, async ({ params }) => {
-    if (params.error) {
-      console.log('Cannot Consume')
-      return
-    }
-
-    console.log(`[connectRecvTransport] consume params ${params}`);
-
-    // Then consume with the local consumer transport
-    // which creates a consumer
-    consumer = await consumerTransport.consume({
-      id: params.id,
-      producerId: params.producerId,
-      kind: params.kind,
-      rtpParameters: params.rtpParameters
-    })
-
-    // destructure and retrieve the video track from the producer
-    const { track } = consumer
+  }, async ({videoParams, audioParams}) => {
+    console.log(`[consume] 🟩 videoParams`, videoParams)
+    console.log(`[consume] 🟩 audioParams`, audioParams)
+    console.log('[consume] 🟩 consumerTransport', consumerTransport)
 
     let stream = new MediaStream()
-    stream.addTrack(track)
-    // stream.removeTrack(track)
-    remoteVideo.srcObject = stream
-    socket.emit('consumer-resume')
-    console.log('consumer', consumer);
 
+    // Maybe the unit does not produce video or audio, so we must only consume what is produced
+    if (videoParams) {
+      console.log('❗ Have VIDEO stream to consume');
+      stream.addTrack(await getVideoTrask(videoParams))
+    } else {
+      console.log('❗ Don\'t have VIDEO stream to consume');
+    }
+    
+    if (audioParams) {
+      console.log('❗ Have AUDIO stream to consume');
+      let audioTrack = await getAudioTrask(audioParams)
+      stream.addTrack(audioTrack)
+    } else {
+      console.log('❗ Don\'t have AUDIO stream to consume');
+    }
+
+    socket.emit('consumer-resume')
+
+    remoteVideo.srcObject = stream
+    remoteVideo.setAttribute('autoplay', true)
+
+    remoteVideo.play()
+    .then(() => {
+      console.log('remoteVideo PLAY')
+    })
+    .catch((error) => {
+      displayError(`remoteVideo PLAY ERROR | ${error.message}`)
+    })
   })
 }
 
+const getVideoTrask = async (videoParams) => {
+  consumerVideo = await consumerTransport.consume({
+    id: videoParams.id,
+    producerId: videoParams.producerId,
+    kind: videoParams.kind,
+    rtpParameters: videoParams.rtpParameters
+  }) 
+
+  consumerVideo.on('transportclose', () => {
+    console.log('transport closed so consumer closed')
+  })
+
+  return consumerVideo.track
+}
+
+const getAudioTrask = async (audioParams) => {
+  consumerAudio = await consumerTransport.consume({
+    id: audioParams.id,
+    producerId: audioParams.producerId,
+    kind: audioParams.kind,
+    rtpParameters: audioParams.rtpParameters
+  })
+
+  consumerAudio.on('transportclose', () => {
+    console.log('transport closed so consumer closed')
+  })
+
+  const audioTrack = consumerAudio.track
+
+  audioTrack.applyConstraints({
+    audio: {
+      advanced: [
+        {
+          echoCancellation: {exact: true}
+        },
+        {
+          autoGainControl: {exact: true}
+        },
+        {
+          noiseSuppression: {exact: true}
+        }, 
+        {
+          highpassFilter: {exact: true}
+        }
+      ]
+    }
+  })
+
+  return audioTrack
+}
+
 const closeCall = () => {
   console.log('closeCall');