react-native-webrtc

react-native-webrtc

A WebRTC module for React Native.

Support

• Currently support for iOS and Android.
• Support video and audio communication.
• Supports data channels.
• You can use it to build an iOS/Android app that can communicate with web browser.
• The WebRTC Library is based on webrtc-build-scripts

WebRTC Revision

please see #79 for discussions.

react-native-webrtc	WebRTC(ios)	WebRTC(android)
<= 0.9.0	branch ~47 beta (11177)	branch ~47 beta (11139)
0.10.0	branch 52 stable (13039)	branch 52 stable (13039)

Installation

prerequisite: Git Large File Storage ( Git LFS )

since 0.10.0, we upgrade webrtc library to branch 52 stable release, and store library on Git Large File Storage
you may need to install git lfs to automatically download library when git clone or npm install.

belows are brief memo, please go to Git LFS official website for details.

Linux: download git-lfs tar file and execute install.sh inside it.
Mac: brew install git-lfs or port install git-lfs then git lfs install

react-native-webrtc:

• iOS
• Android

Usage

Now, you can use WebRTC like in browser. In your index.ios.js/index.android.js, you can require WebRTC to import RTCPeerConnection, RTCSessionDescription, etc.

var WebRTC = require('react-native-webrtc');
var {
  RTCPeerConnection,
  RTCMediaStream,
  RTCIceCandidate,
  RTCSessionDescription,
  RTCView,
  MediaStreamTrack,
  getUserMedia,
} = WebRTC;

Anything about using RTCPeerConnection, RTCSessionDescription and RTCIceCandidate is like browser.
Support most WebRTC APIs, please see the Document.

var configuration = {"iceServers": [{"url": "stun:stun.l.google.com:19302"}]};
var pc = new RTCPeerConnection(configuration);
MediaStreamTrack.getSources(sourceInfos => {
  var videoSourceId;
  for (var i = 0; i < sourceInfos.length; i++) {
    var sourceInfo = sourceInfos[i];
    if(sourceInfo.kind == "video" && sourceInfo.facing == "front") {
      videoSourceId = sourceInfo.id;
    }
  }
  getUserMedia({
    "audio": true,
    "video": {
      optional: [{sourceId: videoSourceId}]
    }
  }, function (stream) {
    pc.addStream(stream);
  }, logError);
});

pc.createOffer(function(desc) {
  pc.setLocalDescription(desc, function () {
    // Send pc.localDescription to peer
  }, function(e) {});
}, function(e) {});
pc.onicecandidate = function (event) {
  // send event.candidate to peer
};
// also support setRemoteDescription, createAnswer, addIceCandidate, onnegotiationneeded, oniceconnectionstatechange, onsignalingstatechange, onaddstream

However, render video stream should be used by React way.

Rendering RTCView.

var container;
var RCTWebRTCDemo = React.createClass({
  getInitialState: function() {
    return {videoURL: null};
  },
  componentDidMount: function() {
    container = this;
  },
  render: function() {
    return (
      <View>
        <RTCView streamURL={this.state.videoURL}/>
      </View>
    );
  }
});

And set stream to RTCView

container.setState({videoURL: stream.toURL()});

Demo

The demo project is https://github.com/oney/RCTWebRTCDemo
And you will need a signaling server. I have written a signaling server https://react-native-webrtc.herokuapp.com/ (the repository is https://github.com/oney/react-native-webrtc-server).
You can open this website in browser, and then set it as signaling server in the app, and run the app. After you enter the same room ID, the video stream will be connected.

Native control

Use react-native-incall-manager to keep screen on, mute microphone, etc.