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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: [{ urls: "stun:stun.l.google.com:19302" }],
port: null,
socket: null,
peers: {},
onMessage(message) {
internals[message.action](message.data);
},
async joinAudioCall({ currentUrl, tada }) {
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: ", currentUrl);
internals.socket.emit("join", {
room: currentUrl,
});
});
internals.socket.on("disconnect", function () {
console.log("disconnected from signaling server");
});
internals.socket.on("addPeer", function ({ peerId }) {
/**
* Eventually the whole rtc connection logic should be moved to Peers.
* Now it only plays tadas.
*/
Peers.add(peerId, tada);
const peerConnection = new RTCPeerConnection(
{ iceServers: internals.kIceServers },
{ optional: [{ DtlsSrtpKeyAgreement: true }] },
);
internals.peers[peerId] = peerConnection;
mediaStream.getTracks().forEach((track) => {
peerConnection.addTrack(track, mediaStream);
});
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
internals.socket.emit("relayOffer", { offer, peerId });
};
console.log(`There are now ${Peers.count()} participants`);
});
internals.socket.on("offerReceived", async ({ offer, peerId }) => {
const peerConnection = internals.peers[peerId];
const remoteDescription = new RTCSessionDescription(offer);
await peerConnection.setRemoteDescription(remoteDescription);
const answer = await peerConnection.createAnswer();
await peerConnection.setLocalDescription(answer);
// Send the answer to the peer
internals.socket.emit("relayAnswer", { answer, peerId });
});
internals.socket.on("answerReceived", async ({ answer, peerId }) => {
const peerConnection = internals.peers[peerId];
const remoteDescription = new RTCSessionDescription(answer);
await peerConnection.setRemoteDescription(remoteDescription);
});
internals.socket.on(
"ICECandidateReceived",
async ({ candidate, peerId }) => {
const peerConnection = internals.peers[peerId];
const iceCandidate = new RTCIceCandidate(candidate);
await peerConnection.addIceCandidate(iceCandidate);
},
);
internals.socket.on("removePeer", function ({ peerId }) {
delete internals.peers[peerId];
Peers.remove(peerId);
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;
|
