.env

@@ -8,3 +8,4 @@ SERVER_KEY="./server/ssl/key.pem"
 ENABLE_UDP=true
 ENABLE_TCP=true
 PREFER_UDP=true
+PREFER_TCP=false

README.md

@@ -9,17 +9,22 @@
 ### Development
 
 ##### To start in development mode you must:
+
 1. Install the dependencies `npm install`.
 
-2. Go to the linx-devops project and run the `create_certificate_for_domain.sh` script from `private-system-trusted-cert`, it expects an ip/domain as the first argument.
-   ex: `sh create_certificate_for_domain.sh 192.168.1.199`
-   (Use your private IP-address)
+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:
-- device.key -> key.pem
-- nginx-selfsigned.crt -> cert.pem
+
+        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
 
@@ -33,22 +38,22 @@
 ##### 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
-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
-dest_asset_id= the addressee with whom the call is made
+  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
+  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
+  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;
 /**
@@ -555,14 +560,33 @@ const createWebRtcTransportLayer = async (callId, callback) => {
           announcedIp: process.env.ANNOUNCED_IP, // Announced IPv4 or IPv6 (useful when running mediasoup behind NAT with private IP).
         },
       ],
-      enableUdp: process.env.ENABLE_UDP === 'true',
-      enableTcp: process.env.ENABLE_TCP === 'true',
-      preferUdp: process.env.PREFER_UDP === 'true',
+      enableUdp: isUdpEnabled,
+      enableTcp: isTcpEnabled,
+      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.`);
+      }
+    });
+
     // Handler for when DTLS(Datagram Transport Layer Security) changes
     transport.on('dtlsstatechange', (dtlsState) => {
       console.log(`transport | dtlsstatechange | calldId ${callId} | dtlsState ${dtlsState}`);

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",