README.md

@@ -33,3 +33,7 @@ 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
+
+### Demo project
+  The demo project used initially and then modified for our needs `https://github.com/jamalag/mediasoup2`
+

app.js

@@ -65,19 +65,22 @@ httpsServer.listen(process.env.PORT, () => {
 const peers = io.of('/')
 
 const createWorker = async () => {
+  try {
     worker = await mediasoup.createWorker({
       rtcMinPort: 2000,
       rtcMaxPort: 2020,
     })
-  console.log(`[createWorker] worker pid ${worker.pid}`)
+    console.log(`[createWorker] worker pid ${worker.pid}`);
   
     worker.on('died', error => {
       // This implies something serious happened, so kill the application
-    console.error('mediasoup worker has died', error)
+      console.error('mediasoup worker has died', error);
-    setTimeout(() => process.exit(1), 2000) // exit in 2 seconds
+      setTimeout(() => process.exit(1), 2000); // exit in 2 seconds
     })
-
+    return worker;
-  return worker
+  } catch (error) {
+    console.log(`ERROR | createWorker | ${error.message}`);
+  }
 }
 
 // We create a Worker as soon as our application starts
@@ -105,6 +108,7 @@ const mediaCodecs = [
 ]
 
 const closeCall = (callId) => {
+  try {
     if (videoCalls[callId]) {
       videoCalls[callId].producer?.close();
       videoCalls[callId].consumer?.close();
@@ -112,28 +116,51 @@ const closeCall = (callId) => {
       videoCalls[callId]?.producerTransport.close();
       videoCalls[callId].router.close();
       delete videoCalls[callId];
+    } else {
+      console.log(`The call with id ${callId} has already been deleted`);
+    }
+  } catch (error) {
+    console.log(`ERROR | closeCall | callid ${callId} | ${error.message}`);
   }
 }
 
 const getRtpCapabilities = (callId, callback) => {
+  try {
     console.log('[getRtpCapabilities] callId', callId);
     const rtpCapabilities = videoCalls[callId].router.rtpCapabilities;
     callback({ rtpCapabilities });
+  } catch (error) {
+    console.log(`ERROR | getRtpCapabilities | callId ${callId} | ${error.message}`);
+  }
 }
 
+/*
+  - Handlers for WS events
+  - These are created only when we have a connection with a peer
+*/
 peers.on('connection', async socket => {
-  console.log('[connection] socketId:', socket.id)
+  console.log('[connection] socketId:', socket.id);
+
+  // After making the connection successfully, we send the client a 'connection-success' event
   socket.emit('connection-success', {
     socketId: socket.id
-  })
+  });
 
+  // It is triggered when the peer is disconnected
   socket.on('disconnect', () => {
-    // do some cleanup
+    const callId = socketDetails[socket.id];
-    console.log('peer disconnected | socket.id', socket.id)
+    console.log(`disconnect | socket ${socket.id} | callId ${callId}`);
     delete socketDetails[socket.id];
-  })
+    closeCall(callId);
+  });
 
+  /*
+    - This event creates a room with the roomId and the callId sent
+    - It will return the rtpCapabilities of that room
+    - If the room already exists, it will not create it, but will only return rtpCapabilities
+  */
   socket.on('createRoom', async ({ callId }, callback) => {
+    try {
       if (callId) {
         console.log(`[createRoom] socket.id ${socket.id} callId ${callId}`);
         if (!videoCalls[callId]) {
@@ -146,115 +173,174 @@ peers.on('connection', async socket => {
       } else {
         console.log(`[createRoom] missing callId ${callId}`);
       }
-  })
+    } catch (error) {
+      console.log(`ERROR | createRoom | callId ${callId} | ${error.message}`);
+    }
+  });
 
-  // Client emits a request to create server side Transport
+  /*
-  // We need to differentiate between the producer and consumer transports
+    - Client emits a request to create server side Transport
-  socket.on('createWebRtcTransport', async ({ sender, callId }, callback) => {
+    - Depending on the sender, producerTransport or consumerTransport is created on that router
-    console.log(`[createWebRtcTransport] Is this a sender request? ${sender} | callId ${callId}`)
+    - It will return parameters, these are required for the client to create the RecvTransport 
-    // The client indicates if it is a producer or a consumer
+    from the client.
-    // if sender is true, indicates a producer else a consumer
+      - If the client is producer(sender: true) then it will use parameters for device.createSendTransport(params)
-    if (sender)
+      - If the client is a consumer(sender: false) then it will use parameters for device.createRecvTransport(params)
-      videoCalls[callId].producerTransport = await createWebRtcTransportLayer(callId, callback)
+  */
-    else
+  socket.on('createWebRtcTransport', async ({ sender }, callback) => {
-      videoCalls[callId].consumerTransport = await createWebRtcTransportLayer(callId, callback)
+    try {
-  })
-
-  // see client's socket.emit('transport-connect', ...)
-  socket.on('transport-connect', async ({ dtlsParameters }) => {
       const callId = socketDetails[socket.id];
-    console.log(`[transport-connect] socket.id ${socket.id} | callId ${callId} | DTLS PARAMS... ${dtlsParameters}`)
+      console.log(`[createWebRtcTransport] sender ${sender} | callId ${callId}`);
-    await videoCalls[callId].producerTransport.connect({ dtlsParameters })
+      if (sender) {
-  })
+        if (!videoCalls[callId].producerTransport) {
+          videoCalls[callId].producerTransport = await createWebRtcTransportLayer(callId, callback);
+        } else {
+          console.log(`producerTransport has already been defined | callId ${callId}`);
+        }
+      } else if (!sender) {
+        if (!videoCalls[callId].consumerTransport) {
+          videoCalls[callId].consumerTransport = await createWebRtcTransportLayer(callId, callback);
+        } else {
+          console.log(`consumerTransport has already been defined | callId ${callId}`);
+        }
+      }
+    } catch (error) {
+      console.log(`ERROR | createWebRtcTransport | callId ${callId} | sender ${sender} | ${error.message}`);
+    }
+  });
 
-  // see client's socket.emit('transport-produce', ...)
+  /*
+    - The client sends this event after successfully creating a createSendTransport(AS PRODUCER)
+    - The connection is made to the created transport
+  */
+  socket.on('transport-connect', async ({ dtlsParameters }) => {
+    try {
+      const callId = socketDetails[socket.id];
+      console.log(`[transport-connect] socket.id ${socket.id} | callId ${callId}`)
+      await videoCalls[callId].producerTransport.connect({ dtlsParameters });
+    } catch (error) {
+      console.log(`ERROR | transport-connect | callId ${socketDetails[socket.id]} | ${error.message}`);
+    }
+  });
+
+  /*
+    - The event sent by the client (PRODUCER) after successfully connecting to producerTransport
+    - For the router with the id callId, we make produce on producerTransport
+    - Create the handler on producer at the 'transportclose' event
+  */
   socket.on('transport-produce', async ({ kind, rtpParameters, appData }) => {
+    try {
       const callId = socketDetails[socket.id];
       console.log('[transport-produce] | socket.id', socket.id, '| callId', callId);
-    // call produce based on the prameters from the client
       videoCalls[callId].producer = await videoCalls[callId].producerTransport.produce({
         kind,
         rtpParameters,
-    })
+      });
-    console.log(`[transport-produce] Producer ID: ${videoCalls[callId].producer.id} | kind: ${videoCalls[callId].producer.kind}`)
+      console.log(`[transport-produce] Producer ID: ${videoCalls[callId].producer.id} | kind: ${videoCalls[callId].producer.kind}`);
   
       videoCalls[callId].producer.on('transportclose', () => {
         const callId = socketDetails[socket.id];
         console.log('transport for this producer closed', callId)
         closeCall(callId);
-    })
+      });
-  })
+    } catch (error) {
+      console.log(`ERROR | transport-produce | callId ${socketDetails[socket.id]} | ${error.message}`);
+    }
+  });
 
-  // see client's socket.emit('transport-recv-connect', ...)
+  /*
+    - The client sends this event after successfully creating a createRecvTransport(AS CONSUMER)
+    - The connection is made to the created consumerTransport
+  */
   socket.on('transport-recv-connect', async ({ dtlsParameters }) => {
+    try {
       const callId = socketDetails[socket.id];
-    console.log(`[transport-recv-connect] socket.id ${socket.id} | callId ${callId} | DTLS PARAMS: ${dtlsParameters}`);
+      console.log(`[transport-recv-connect] socket.id ${socket.id} | callId ${callId}`);
-    await videoCalls[callId].consumerTransport.connect({ dtlsParameters })
+      await videoCalls[callId].consumerTransport.connect({ dtlsParameters });
+    } catch (error) {
+      console.log(`ERROR | transport-recv-connect | callId ${socketDetails[socket.id]} | ${error.message}`);
+    }
   })
 
+  /*
+    - The customer consumes after successfully connecting to consumerTransport
+    - The previous step was 'transport-recv-connect', and before that 'createWebRtcTransport'
+    - This event is only sent by the consumer
+    - The parameters that the consumer consumes are returned
+      - The consumer does consumerTransport.consume(params)
+  */
   socket.on('consume', async ({ rtpCapabilities }, callback) => {
+    try {
       const callId = socketDetails[socket.id];
       console.log('[consume] callId', callId);
-    try {
+
-      // console.log('consume', rtpCapabilities, callId);
+      // Check if the router can consume the specified producer
-      // check if the router can consume the specified producer
       if (videoCalls[callId].router.canConsume({
         producerId: videoCalls[callId].producer.id,
         rtpCapabilities
       })) {
         console.log('[consume] Can consume', callId);
-        // transport can now consume and return a consumer
+        // Transport can now consume and return a consumer
         videoCalls[callId].consumer = await videoCalls[callId].consumerTransport.consume({
           producerId: videoCalls[callId].producer.id,
           rtpCapabilities,
           paused: true,
-        })
+        });
 
         // https://mediasoup.org/documentation/v3/mediasoup/api/#consumer-on-transportclose
         videoCalls[callId].consumer.on('transportclose', () => {
           const callId = socketDetails[socket.id];
           console.log('transport close from consumer', callId);
           closeCall();
-        })
+        });
 
         // https://mediasoup.org/documentation/v3/mediasoup/api/#consumer-on-producerclose
         videoCalls[callId].consumer.on('producerclose', () => {
           const callId = socketDetails[socket.id];
           console.log('producer of consumer closed', callId);
           closeCall();
-        })
+        });
 
-        // from the consumer extract the following params
+        // From the consumer extract the following params to send back to the Client
-        // to send back to the Client
         const params = {
           id: videoCalls[callId].consumer.id,
           producerId: videoCalls[callId].producer.id,
           kind: videoCalls[callId].consumer.kind,
           rtpParameters: videoCalls[callId].consumer.rtpParameters,
-        }
+        };
 
-        // send the parameters to the client
+        // Send the parameters to the client
-        callback({ params })
+        callback({ params });
       } else {
-        console.log('[canConsume] Can\'t consume')
+        console.log(`[canConsume] Can't consume | callId ${callId}`);
       }
     } catch (error) {
-      console.log('[consume] Error', error.message)
+      console.log(`ERROR | consume | callId ${callId} | ${error.message}`)
-      callback({
+      callback({ params: { error } });
-        params: {
-          error: error
     }
-      })
+  });
-    }
-  })
 
+  /*
+    - 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 
+  */
   socket.on('consumer-resume', async () => {
+    try {
       const callId = socketDetails[socket.id];
       console.log(`[consumer-resume] callId ${callId}`)
-    await videoCalls[callId].consumer.resume()
+      await videoCalls[callId].consumer.resume();
-  })
+    } catch (error) {
-})
+      console.log(`ERROR | consumer-resume | callId ${socketDetails[socket.id]} | ${error.message}`);
+    }
+  });
+});
 
+/*
+  - Called from at event 'createWebRtcTransport' and assigned to the consumer or producer transport
+  - It will return parameters, these are required for the client to create the RecvTransport 
+    from the client.
+    - If the client is producer(sender: true) then it will use parameters for device.createSendTransport(params)
+    - If the client is a consumer(sender: false) then it will use parameters for device.createRecvTransport(params)
+*/
 const createWebRtcTransportLayer = async (callId, callback) => {
   try {
     console.log('[createWebRtcTransportLayer] callId', callId);
@@ -269,45 +355,40 @@ const createWebRtcTransportLayer = async (callId, callback) => {
       enableUdp: true,
       enableTcp: true,
       preferUdp: true,
-    }
+    };
-
-    // console.log('webRtcTransport_options', webRtcTransport_options);
     
     // 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 => {
+      console.log(`transport | dtlsstatechange | calldId ${callId} | dtlsState ${dtlsState}`);
       if (dtlsState === 'closed') {
-        transport.close()
+        transport.close();
       }
-    })
+    });
 
+    // Handler if the transport layer has closed (for various reasons)
     transport.on('close', () => {
-      console.log('transport closed')
+      console.log(`transport | closed | calldId ${callId}`);
-    })
+    });
 
     const params = {
       id: transport.id,
       iceParameters: transport.iceParameters,
       iceCandidates: transport.iceCandidates,
       dtlsParameters: transport.dtlsParameters,
-    }
+    };
 
-    // send back to the client the following prameters
+    // Send back to the client the params
-    callback({
+    callback({ params });
-      // https://mediasoup.org/documentation/v3/mediasoup-client/api/#TransportOptions
-      params
-    })
 
-    return transport
+    // Set transport to producerTransport or consumerTransport
+    return transport;
 
   } catch (error) {
-    console.log('[createWebRtcTransportLayer] ERROR', JSON.stringify(error));
+    console.log(`ERROR | createWebRtcTransportLayer | callId ${callId} | ${error.message}`);
-    callback({
+    callback({ params: { error } });
-      params: {
-        error: error
-      }
-    })
   }
 }

package-lock.json

@@ -1791,27 +1791,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/@pm2/agent/node_modules/ws": {
-      "version": "7.4.6",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
-      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==",
-      "dev": true,
-      "engines": {
-        "node": ">=8.3.0"
-      },
-      "peerDependencies": {
-        "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
-      },
-      "peerDependenciesMeta": {
-        "bufferutil": {
-          "optional": true
-        },
-        "utf-8-validate": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/@pm2/io": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/@pm2/io/-/io-5.0.0.tgz",
@@ -2387,11 +2366,6 @@
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       "dev": true
     },
-    "node_modules/async-limiter": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
-      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
-    },
     "node_modules/async-listener": {
       "version": "0.6.10",
       "resolved": "https://registry.npmjs.org/async-listener/-/async-listener-0.6.10.tgz",
@@ -2454,9 +2428,9 @@
       }
     },
     "node_modules/base64-arraybuffer": {
-      "version": "0.1.5",
+      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
+      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.4.tgz",
-      "integrity": "sha512-437oANT9tP582zZMwSvZGy2nmSeAb8DW2me3y+Uv1Wp2Rulr8Mqlyrv3E7MLxmsiaPSMMDmiDVzgE+e8zlMx9g==",
+      "integrity": "sha512-a1eIFi4R9ySrbiMuyTGx5e92uRH5tQY6kArNcFaKBUleIoLjdjBg7Zxm3Mqm3Kmkf27HLR/1fnxX9q8GQ7Iavg==",
       "engines": {
         "node": ">= 0.6.0"
       }
@@ -2482,22 +2456,11 @@
       ]
     },
     "node_modules/base64id": {
-      "version": "1.0.0",
+      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/base64id/-/base64id-1.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
-      "integrity": "sha512-rz8L+d/xByiB/vLVftPkyY215fqNrmasrcJsYkVcm4TgJNz+YXKrFaFAWibSaHkiKoSgMDCb+lipOIRQNGYesw==",
+      "integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
       "engines": {
-        "node": ">= 0.4.0"
+        "node": "^4.5.0 || >= 5.9"
-      }
-    },
-    "node_modules/better-assert": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
-      "integrity": "sha512-bYeph2DFlpK1XmGs6fvlLRUN29QISM3GBuUwSFsMY2XRx4AvC0WNCS57j4c/xGrK2RS24C1w3YoBOsw9fT46tQ==",
-      "dependencies": {
-        "callsite": "1.0.0"
-      },
-      "engines": {
-        "node": "*"
       }
     },
     "node_modules/binary-extensions": {
@@ -2874,14 +2837,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/callsite": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz",
-      "integrity": "sha512-0vdNRFXn5q+dtOqjfFtmtlI9N2eVZ7LMyEV2iKC5mEEFvSg/69Ml6b/WU2qF8W1nLRa0wiSrDT3Y5jOHZCwKPQ==",
-      "engines": {
-        "node": "*"
-      }
-    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
@@ -3050,9 +3005,9 @@
       "integrity": "sha512-WZveuKPeKAG9qY+FkYDeADzdHyTYdIboXS59ixDeRJL5ZhxpqUnxSOwop4FQjMsiYm3/Or8cegVbpAHNA7pHxw=="
     },
     "node_modules/component-emitter": {
-      "version": "1.2.1",
+      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
+      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
-      "integrity": "sha512-jPatnhd33viNplKjqXKRkGU345p263OIWzDL2wH3LGIGp5Kojo+uXizHmOADRvhGFFTnJqX3jBAKP6vvmSDKcA=="
+      "integrity": "sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg=="
     },
     "node_modules/component-inherit": {
       "version": "0.0.3",
@@ -3628,36 +3583,36 @@
       }
     },
     "node_modules/engine.io": {
-      "version": "3.1.5",
+      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-3.1.5.tgz",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-3.6.0.tgz",
-      "integrity": "sha512-D06ivJkYxyRrcEe0bTpNnBQNgP9d3xog+qZlLbui8EsMr/DouQpf5o9FzJnWYHEYE0YsFHllUv2R1dkgYZXHcA==",
+      "integrity": "sha512-Kc8fo5bbg8F4a2f3HPHTEpGyq/IRIQpyeHu3H1ThR14XDD7VrLcsGBo16HUpahgp8YkHJDaU5gNxJZbuGcuueg==",
       "dependencies": {
         "accepts": "~1.3.4",
-        "base64id": "1.0.0",
+        "base64id": "2.0.0",
-        "cookie": "0.3.1",
+        "cookie": "~0.4.1",
-        "debug": "~3.1.0",
+        "debug": "~4.1.0",
-        "engine.io-parser": "~2.1.0",
+        "engine.io-parser": "~2.2.0",
-        "ws": "~3.3.1"
+        "ws": "~7.4.2"
       },
-      "optionalDependencies": {
+      "engines": {
-        "uws": "~9.14.0"
+        "node": ">=8.0.0"
       }
     },
     "node_modules/engine.io-client": {
-      "version": "3.1.6",
+      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-3.1.6.tgz",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-3.5.3.tgz",
-      "integrity": "sha512-hnuHsFluXnsKOndS4Hv6SvUrgdYx1pk2NqfaDMW+GWdgfU3+/V25Cj7I8a0x92idSpa5PIhJRKxPvp9mnoLsfg==",
+      "integrity": "sha512-qsgyc/CEhJ6cgMUwxRRtOndGVhIu5hpL5tR4umSpmX/MvkFoIxUTM7oFMDQumHNzlNLwSVy6qhstFPoWTf7dOw==",
       "dependencies": {
-        "component-emitter": "1.2.1",
+        "component-emitter": "~1.3.0",
         "component-inherit": "0.0.3",
         "debug": "~3.1.0",
-        "engine.io-parser": "~2.1.1",
+        "engine.io-parser": "~2.2.0",
         "has-cors": "1.1.0",
         "indexof": "0.0.1",
-        "parseqs": "0.0.5",
+        "parseqs": "0.0.6",
-        "parseuri": "0.0.5",
+        "parseuri": "0.0.6",
-        "ws": "~3.3.1",
+        "ws": "~7.4.2",
-        "xmlhttprequest-ssl": "~1.5.4",
+        "xmlhttprequest-ssl": "~1.6.2",
         "yeast": "0.1.2"
       }
     },
@@ -3670,33 +3625,39 @@
       }
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@@ -13505,6 +13456,46 @@
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+    "socket.io-parser": {
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@@ -14009,11 +14000,6 @@
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@@ -14124,12 +14110,6 @@
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@@ -14259,26 +14239,15 @@
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package.json

@@ -5,7 +5,7 @@
   "main": "app.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "start:dev": "nodemon app.ts",
+    "start:dev": "nodemon app.js",
     "start:prod": "pm2 start ./app.js -n video-server",
     "watch": "watchify public/index.js -o public/bundle.js -v"
   },