Merge pull request 'LINXD-2850: Add handler on icestatechange failed/disconnected to send 'connection-failed' event to participants' (#39) from LINXD-2850-connection-failed-handler into develop

Reviewed-on: #39
Reviewed-by: Cristi Ene <cristi.ene@safemobile.com>

.env

@@ -1,7 +1,11 @@
 PORT=3000
-IP=0.0.0.0 #	Listening IPv4 or IPv6.
+IP=0.0.0.0 #    Listening IPv4 or IPv6.
-ANNOUNCED_IP=185.8.154.190 # Announced IPv4 or IPv6 (useful when running mediasoup behind NAT with private IP).
+ANNOUNCED_IP=192.168.1.199 #    Announced IPv4 or IPv6 (useful when running mediasoup behind NAT with private IP).
-RTC_MIN_PORT=2000
+RTC_MIN_PORT=40000
-RTC_MAX_PORT=2020
+RTC_MAX_PORT=49999
 SERVER_CERT="./server/ssl/cert.pem"
-SERVER_KEY="./server/ssl/key.pem"
+SERVER_KEY="./server/ssl/key.pem"
+ENABLE_UDP=true
+ENABLE_TCP=true
+PREFER_UDP=true
+PREFER_TCP=false

.gitignore

@@ -1,2 +1,3 @@
 /node_modules
 /dist
+.idea

Dockerfile

@@ -5,7 +5,7 @@ WORKDIR /app
 RUN apt-get update && \
     apt-get install -y build-essential pip net-tools iputils-ping iproute2 curl
 
-RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
 RUN apt-get install -y nodejs
 
 COPY . /app/

README.md

@@ -6,36 +6,54 @@
 1. Go to `/server/ssl`
 2. Execute `openssl req -newkey rsa:2048 -new -nodes -x509 -days 3650 -keyout key.pem -out cert.pem`
 
-
 ### 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)
 
+1. Install the dependencies `npm install`.
+
+2. Go to the `linx-devops/scaling-tools/private-system-truste-cert` project and generate a new server certificate and key:
+
+        sh create_certificate_for_domain.sh 192.168.1.110 #local IP
+        # generates files
+        nginx-selfsigned.crt
+        device.key
+
+3. You need to update the Video Server in the provisioning to point to your private IP. ex: https://192.168.1.199:3000
+
+4. The generated files must be moved to server/ssl and renamed as follows:
+
+        cp device.key  {mediasoup_project}/server/ssl/key.pem
+        cp nginx-selfsigned.crt {mediosup_project}/server/ssl/cert.pem
+
+5. Go to https://dev.linx.safemobile.com/dispatcher/resources/help/LINXHelp.html#safemobile-certificate-import and import the certificate for your system type
+
+6. The ANNOUNCED IP in .env must be configured to use the same private IP used in generating the certificate.
+
+7. 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`)
+   (To connect to the terminal, use `pm2 log video-server`)
 
 
 ### Web client
 
 - 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: https://HOST/sfu/?assetId=1&&accountId=1&producer=true&dest_asset_id=75&assetName=Adi
+  ex: https://HOST/sfu/?assetId=1&&accountId=1&producer=true&dest_asset_id=75&assetName=Adi
-assetId = asset id of the unit on which you are doing the test
+  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
+  accountId = account id of the unit on which you are doing the test
-producer = it will always be true because you are the producer
+  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)
+  (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
+  assetName = asset name of the unit on which you are doing the test
-dest_asset_id= the addressee with whom the call is made
+  dest_asset_id= the addressee with whom the call is made
 - To make a call using this client, you need a microphone and permission to use it
 - For any changes related to the client, the command `npm run watch' will have to be used to generate the bundle.js used by the web client
 
 ### Demo project
-  The demo project used initially and then modified for our needs `https://github.com/jamalag/mediasoup2`
+The demo project used initially and then modified for our needs `https://github.com/jamalag/mediasoup2`

app.js

@@ -12,6 +12,11 @@ try {
   console.log('https support is disabled!');
 }
 const mediasoup = require('mediasoup');
+const isUdpEnabled = process.env.ENABLE_UDP === 'true';
+const isTcpEnabled = process.env.ENABLE_TCP === 'true';
+const isUdpPreferred = process.env.PREFER_UDP === 'true';
+const isTcpPreferred = process.env.PREFER_TCP === 'true';
+let currentConnectionType = isUdpPreferred ? 'udp' : 'tcp';
 
 let worker;
 /**
@@ -537,6 +542,15 @@ const isInitiator = (callId, socketId) => {
   return videoCalls[callId]?.initiatorSocket?.id === socketId;
 };
 
+const emitToParticipants = (callId, event, message) => {
+  try {
+    videoCalls[callId].receiverSocket.emit(event, message);
+    videoCalls[callId].initiatorSocket.emit(event, message);
+  } catch (error) {
+    console.error(`[emitToParticipants] | ERROR | callId: ${callId} | error: ${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 
@@ -555,14 +569,34 @@ const createWebRtcTransportLayer = async (callId, callback) => {
           announcedIp: process.env.ANNOUNCED_IP, // Announced IPv4 or IPv6 (useful when running mediasoup behind NAT with private IP).
         },
       ],
-      enableUdp: true,
+      enableUdp: isUdpEnabled,
-      enableTcp: true,
+      enableTcp: isTcpEnabled,
-      preferUdp: true,
+      preferUdp: isUdpPreferred,
+      preferTcp: isTcpPreferred,
+      iceConsentTimeout: 3
     };
 
     // https://mediasoup.org/documentation/v3/mediasoup/api/#router-createWebRtcTransport
     let transport = await videoCalls[callId].router.createWebRtcTransport(webRtcTransport_options);
 
+    // `iceselectedtuplechange`: Fires when ICE switches transport (e.g., UDP → TCP).
+    transport.on('iceselectedtuplechange', (selectedTuple) => {
+      const { protocol } = selectedTuple;
+      if (currentConnectionType !== protocol) {
+        console.warn(`⚠️ ${currentConnectionType.toUpperCase()} blocked! Switching to ${protocol.toUpperCase()} for callId: ${callId}`);
+        currentConnectionType = protocol;
+      }
+    });
+
+    // `icestatechange`: Fires when ICE connection state changes (e.g., new, connected, failed).
+    transport.on('icestatechange', (iceState) => {
+      console.log(`[ICE STATE CHANGE] callId: ${callId} | State: ${iceState}`);
+      if (iceState === 'failed' || iceState === 'disconnected') {
+        console.warn(`⚠️ ICE failure detected for callId: ${callId}! Possible UDP blockage.`);
+        emitToParticipants(callId, 'connection-failed', { callId });
+      }
+    });
+
     // Handler for when DTLS(Datagram Transport Layer Security) changes
     transport.on('dtlsstatechange', (dtlsState) => {
       console.log(`transport | dtlsstatechange | calldId ${callId} | dtlsState ${dtlsState}`);

build.sh

@@ -51,11 +51,11 @@ if [ -d "node_modules" ]; then
 fi
 
 # Install dependencies
-#npm install
+npm install
 
 ## PROJECT NEEDS
 echo "Building app... from $(git rev-parse --abbrev-ref HEAD)"
-#npm run-script build
+npm run-script build
 cp -r {.env,app.js,package.json,server,public,doc,Dockerfile} dist/
 #cp -r ./* dist/
 

package.json

@@ -16,7 +16,7 @@
     "@types/express": "^4.17.13",
     "dotenv": "^16.0.1",
     "express": "^4.18.1",
-    "mediasoup": "^3.10.4",
+    "mediasoup": "^3.15.5",
     "mediasoup-client": "^3.6.54",
     "parcel": "^2.7.0",
     "socket.io": "^2.0.3",
@@ -29,4 +29,4 @@
     "ts-node-dev": "^2.0.0",
     "watchify": "^4.0.0"
   }
-}
+}

server/ssl/cert-old.pem

@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----
+MIIDrzCCApegAwIBAgIUfpwrZVz3ogv3YeXbtL5wqIGEXGMwDQYJKoZIhvcNAQEL
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+-----END CERTIFICATE-----

server/ssl/cert.pem

@@ -1,25 +1,24 @@
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 -----END CERTIFICATE-----

server/ssl/key-old.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----

server/ssl/key.pem

@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
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 -----END PRIVATE KEY-----