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import { io } from 'socket.io-client';
import Peers from './peers';
import Media from './media';
const internals = {
kSocketUrl: 'https://junction.tranquil.services',
kIceServers: [
{url:"stun:stun.l.google.com:19302"}
],
port: null,
socket: null,
peers: {},
onMessage(message) {
internals[message.action](message.data);
},
async joinAudioCall(data) {
internals.tada = data.tada; // Keeping for fun
try {
const mediaStream = await Media.start();
internals.socket = io(internals.kSocketUrl, {
transports: ['websocket']
});
internals.socket.on('error', function(error) {
console.error('GENERAL ERROR', error);
});
internals.socket.on('connect_error', function(error) {
console.error('CONNNECT ERROR', error);
});
internals.socket.on('connect', function() {
console.log('Connected to signaling server, group: ', data.currentUrl);
internals.socket.emit('join', {
room: data.currentUrl,
});
});
internals.socket.on('disconnect', function() {
console.log("disconnected from signaling server");
});
internals.socket.on('addPeer', function(data) {
Peers.add(data.peerId, internals.tada);
const peerId = data.peerId;
const peerConnection = new RTCPeerConnection(
{ iceServers: internals.kIceServers },
{ optional: [{ DtlsSrtpKeyAgreement: true }] }
);
internals.peers[peerId] = peerConnection;
mediaStream.getTracks().forEach((track) => {
peerConnection.addTrack(track, localStream);
});
peerConnection.onicecandidate = (event) => {
if (event.candidate) {
internals.socket.emit('relayICECandidate', {
peerId: peerId,
candidate: event.candidate
});
}
}
const remoteStream = new MediaStream();
peerConnection.ontrack = (event) => {
remoteStream.addTrack(event.track);
const remoteAudioElement = new Audio();
remoteAudioElement.srcObject = remoteStream;
remoteAudioElement.play();
};
peerConnection.onnegotiationneeded = async () => {
console.log("Creating RTC offer to ", peerId);
const offer = await peerConnection.createOffer();
await peerConnection.setLocalDescription(offer);
// Emit the offer to the peer
socket.emit('relayOffer', { offer, peerId });
};
console.log(`There are now ${Peers.count()} participants`);
});
socket.on('offerReceived', async (data) => {
const peerConnection = internals.peers[data.peerId];
const offer = new RTCSessionDescription(data.offer);
await peerConnection.setRemoteDescription(offer);
const answer = await peerConnection.createAnswer();
await peerConnection.setLocalDescription(answer);
// Send the answer to the peer
socket.emit('relayAnswer', { answer, peerId: data.peerId });
});
socket.on('answerReceived', async (data) => {
const peerConnection = internals.peers[data.peerId];
const answer = new RTCSessionDescription(data.answer);
await peerConnection.setRemoteDescription(answer);
});
socket.on('ICECandidateReceived', async (data) => {
const peerConnection = internals.peers[data.peerId];
const candidate = new RTCIceCandidate(data.candidate);
await peerConnection.addIceCandidate(candidate);
});
internals.socket.on('removePeer', function() {
delete internals.peers[data.peerId];
Peers.remove('id-'+(Peers.count() - 1)); // This is only for testing, don't use count to remove ids.
console.log(`There are now ${Peers.count()} participants`);
});
}
catch (err) {
internals.port.postMessage({
action: 'error'
});
internals.port.disconnect();
}
},
hangUp() {
Peers.reset();
Media.stop();
internals.socket.close();
internals.port.disconnect();
}
};
internals.port = chrome.runtime.connect({ name:"content" });
internals.port.onMessage.addListener(internals.onMessage);
console.log('Content Script Loaded');
// Indicates to the background script that we executed correctly
true;
|
