A detailed description is addressed in the following article Maximizing WebRTC Potential
This project covers an implementation of Web RTC in Java to establish an app to app calling Mechanism.
To start the application you will need to start the Signalling server. A signalling server helps in sharing the ICE candidates between the peers [it must be over secure medium, i.e. wss], it is build using WebSockets or anyother related library like Socket.io. You can use the signalling server from this repo. Here I implemened a simple websocket based Node Js server that helps in establishing connection between peers.
You need to run the following commands for first time execution to install the required packages.
yarn or npm install
Then you need to start the server using
yarn start or npm start
Now you have the signalling server up and running on port :3000 you can edit this port from the index.js file in the repository.
When you open the app code base you will see a SocketRepository class here we have implemented a connection to the Signalling Server
// Here in the place of new URI("") => need to add
// your connection string in place of the ""
this.webSocketClient = new WebSocketClient(new URI("")) {
@Override
public void onOpen(ServerHandshake handshake) {
sendMessageToSocket(
new MessageModels(
"store_user", username, null, null
)
);
}
@Override
public void onMessage(String message) {
try {
onNewMessage(new Gson().fromJson(message, MessageModels.class));
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onClose(int code, String reason, boolean remote) {
Log.d(logTag, "onClose: " + reason);
}
@Override
public void onError(Exception ex) {
Log.d(logTag, "onError: " + ex.toString());
}
};You can use tools like ngrok to get a secure like to your local server.
To run the server with ngrok, start the signalling server and run the following commands:
ngrok http 3000
This command will give you a secure link to you local server.
ngrok (Ctrl+C to quit)
Send your ngrok traffic logs to Datadog: https://ngrok.com/blog-post/datadog-logs
Session Status online
Account [email protected] (Plan: Free)
Version 3.3.1
Region India (in)
Latency -
Web Interface http://127.0.0.1:4040
Forwarding https://c76d-58-65-176-42.ngrok-free.app -> http://localhost:3000
Connections ttl opn rt1 rt5 p50 p90
0 0 0.00 0.00 0.00 0.00
The link https://c76d-58-65-176-42.ngrok-free.app is a secure endpoint and can be use with the prefix of wss:// instead of https:// as it is a WebSocket based server. This link should be added as a URI in the SocketRepository class, as discussed earlier.
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