Skip to main content
Version: 3.0

WebRTC Peer to Peer Communication

In this documentation, we're going to explain how to implement WebRTC peer-to-peer communication with JavaScript SDK.

Navigate to P2P Sample Page​

There is already a working demo for this in the peer.html file.

Go to ⁣https://your-domain-name:5443/live/peer.html for a sample page.

If you have Ant Media Server installed on your local machine, you can also go to http://localhost:5080/live/peer.html

  • Input the streamId and click the join button.
  • Now open the same page in a new browser tab or any other machine and click join. Congratulations! You're now using WebRTC to connect in P2P mode from your browser!

Join P2P Communication​

When WebRTCAdaptor is successfully initialized, it establishes a web socket connection. Following a successful connection, the client receives an initialized notification from the server. After receiving initialized notification, call thejoin method.

webRTCAdaptor.join(streamId);

If the join method returns successful, the server responds with a joined notification. As a result, the callback method is called with joined notification.

Leave P2P Communication​

When you want to leave a peer-to-peer connection, just call the leave method.

webRTCAdaptor.leave(streamId);

Auxiliary Methods​

The JavaScript SDK provides several auxiliary methods to provide enough flexibility in your application.

  • turnOffLocalCamera: Turn off the local camera in WebRTC peer to peer communication.

    webRTCAdaptor.turnOffLocalCamera(streamId);

  • turnOnLocalCamera: Turn on the local camera in WebRTC peer-to-peer communication.

    webRTCAdaptor.turnOnLocalCamera(streamId);

  • muteLocalMic: Mutes the local microphone in WebRTC peer-to-peer communication.

    webRTCAdaptor.muteLocalMic();

  • unmuteLocalMic: Unmute the local microphone in WebRTC peer-to-peer communication.

    webRTCAdaptor.unmuteLocalMic();

TURN Server​

In some cases, peer-to-peer communication cannot be established and a relay server is required for video/audio transmission. For this requirement, TURN servers are needed to relay the video/audio.

Check out this TURN server document for the configuration.

You can configure TURN server credentials in peer.html as follows.

var pc_config =
{
  'iceServers' : 
      [ {
        'urls' : 'turnServerURL',
        'username' : 'turnServerUsername',
        'credential' : 'turnServerCredential'
      } ]
};


P2P Success ✅

You’ve now used Ant Media’s WebRTC Peer-to-Peer mode: connected via the sample page, joined with WebRTCAdaptor, exchanged streams directly between peers, and (if needed) configured TURN server fallback.

Your connection is now lean, fast, and minimizes lag — pure peer-to-peer streaming magic! 🎯