Miroslav Pejic
607 lines
17 KiB
JavaScript
Executable File
607 lines
17 KiB
JavaScript
Executable File
/*
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http://patorjk.com/software/taag/#p=display&f=ANSI%20Regular&t=Server
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███████ ███████ ██████ ██ ██ ███████ ██████
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██ ██ ██ ██ ██ ██ ██ ██ ██
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███████ █████ ██████ ██ ██ █████ ██████
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██ ██ ██ ██ ██ ██ ██ ██ ██
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███████ ███████ ██ ██ ████ ███████ ██ ██
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*/
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/*
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dependencies: {
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compression : https://www.npmjs.com/package/compression
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dotenv : https://www.npmjs.com/package/dotenv
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express : https://www.npmjs.com/package/express
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ngrok : https://www.npmjs.com/package/ngrok
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socket.io : https://www.npmjs.com/package/socket.io
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}
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*/
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"use strict"; // https://www.w3schools.com/js/js_strict.asp
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require("dotenv").config();
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const compression = require("compression");
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const express = require("express");
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const path = require("path");
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const app = express();
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app.use(compression()); // Compress all HTTP responses GZip
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const http = require("http");
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const server = http.createServer(app);
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const { Server } = require("socket.io");
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const io = new Server().listen(server);
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const ngrok = require("ngrok");
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var PORT = process.env.PORT || 3000; // signalingServerPort
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var localHost = "http://localhost:" + PORT; // http
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var channels = {}; // collect channels
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var sockets = {}; // collect sockets
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var peers = {}; // collect peers info grp by channels
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var ngrokEnabled = process.env.NGROK_ENABLED;
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var ngrokAuthToken = process.env.NGROK_AUTH_TOKEN;
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var turnEnabled = process.env.TURN_ENABLED;
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var turnUrls = process.env.TURN_URLS;
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var turnUsername = process.env.TURN_USERNAME;
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var turnCredential = process.env.TURN_PASSWORD;
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// Use all static files from the www folder
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app.use(express.static(path.join(__dirname, "www")));
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// Remove trailing slashes in url
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app.use(function (req, res, next) {
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if (req.path.substr(-1) === "/" && req.path.length > 1) {
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let query = req.url.slice(req.path.length);
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res.redirect(301, req.path.slice(0, -1) + query);
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} else {
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next();
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}
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});
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/*
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app.get(["/"], (req, res) =>
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res.sendFile(path.join(__dirname, "www/client.html"))
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); */
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// all start from here
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app.get(["/"], (req, res) =>
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res.sendFile(path.join(__dirname, "www/landing.html"))
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);
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// set new room name and join
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app.get(["/newcall"], (req, res) =>
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res.sendFile(path.join(__dirname, "www/newcall.html"))
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);
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// if not allow video/audio
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app.get(["/permission"], (req, res) =>
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res.sendFile(path.join(__dirname, "www/permission.html"))
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);
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// privacy policy
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app.get(["/privacy"], (req, res) =>
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res.sendFile(path.join(__dirname, "www/privacy.html"))
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);
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// no room name specified to join
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app.get("/join/", function (req, res) {
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res.redirect("/");
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});
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// join to room
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app.get("/join/*", function (req, res) {
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if (Object.keys(req.query).length > 0) {
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logme("redirect:" + req.url + " to " + url.parse(req.url).pathname);
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res.redirect(url.parse(req.url).pathname);
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} else {
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res.sendFile(path.join(__dirname, "www/client.html"));
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}
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});
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/**
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* You should probably use a different stun-turn server
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* doing commercial stuff, also see:
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*
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* https://gist.github.com/zziuni/3741933
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* https://www.twilio.com/docs/stun-turn
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* https://github.com/coturn/coturn
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*
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* Check the functionality of STUN/TURN servers:
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* https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/
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*/
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var iceServers = [{ urls: "stun:stun.l.google.com:19302" }];
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if (turnEnabled == "true") {
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iceServers.push({
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urls: turnUrls,
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username: turnUsername,
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credential: turnCredential,
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});
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}
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/**
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* Expose server to external with https tunnel using ngrok
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* https://ngrok.com
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*/
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async function ngrokStart() {
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try {
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await ngrok.authtoken(ngrokAuthToken);
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await ngrok.connect(PORT);
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let api = ngrok.getApi();
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let data = await api.listTunnels();
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let pu0 = data.tunnels[0].public_url;
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let pu1 = data.tunnels[1].public_url;
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let tunnelHttps = pu0.startsWith("https") ? pu0 : pu1;
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// server settings
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logme("settings", {
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http: localHost,
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https: tunnelHttps,
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iceServers: iceServers,
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ngrok: {
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ngrok_enabled: ngrokEnabled,
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ngrok_token: ngrokAuthToken,
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},
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});
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} catch (e) {
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console.error("[Error] ngrokStart", e);
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}
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}
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/**
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* Start Local Server with ngrok https tunnel (optional)
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*/
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server.listen(PORT, null, function () {
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logme(
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`%c
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███████╗██╗ ██████╗ ███╗ ██╗ ███████╗███████╗██████╗ ██╗ ██╗███████╗██████╗
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██╔════╝██║██╔════╝ ████╗ ██║ ██╔════╝██╔════╝██╔══██╗██║ ██║██╔════╝██╔══██╗
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███████╗██║██║ ███╗██╔██╗ ██║█████╗███████╗█████╗ ██████╔╝██║ ██║█████╗ ██████╔╝
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╚════██║██║██║ ██║██║╚██╗██║╚════╝╚════██║██╔══╝ ██╔══██╗╚██╗ ██╔╝██╔══╝ ██╔══██╗
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███████║██║╚██████╔╝██║ ╚████║ ███████║███████╗██║ ██║ ╚████╔╝ ███████╗██║ ██║
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╚══════╝╚═╝ ╚═════╝ ╚═╝ ╚═══╝ ╚══════╝╚══════╝╚═╝ ╚═╝ ╚═══╝ ╚══════╝╚═╝ ╚═╝ started...
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`,
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"font-family:monospace"
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);
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// https tunnel
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if (ngrokEnabled == "true") {
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ngrokStart();
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} else {
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// server settings
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logme("settings", {
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http: localHost,
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iceServers: iceServers,
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});
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}
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});
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/**
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* Users will connect to the signaling server, after which they'll issue a "join"
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* to join a particular channel. The signaling server keeps track of all sockets
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* who are in a channel, and on join will send out 'addPeer' events to each pair
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* of users in a channel. When clients receive the 'addPeer' even they'll begin
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* setting up an RTCPeerConnection with one another. During this process they'll
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* need to relay ICECandidate information to one another, as well as SessionDescription
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* information. After all of that happens, they'll finally be able to complete
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* the peer connection and will be in streaming audio/video between eachother.
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* On peer connected
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*/
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io.sockets.on("connect", (socket) => {
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logme("[" + socket.id + "] --> connection accepted");
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socket.channels = {};
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sockets[socket.id] = socket;
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/**
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* On peer diconnected
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*/
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socket.on("disconnect", () => {
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for (var channel in socket.channels) {
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removePeerFrom(channel);
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}
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logme("[" + socket.id + "] <--> disconnected");
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delete sockets[socket.id];
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});
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/**
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* On peer join
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*/
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socket.on("join", (config) => {
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logme("[" + socket.id + "] --> join ", config);
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var channel = config.channel;
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var peer_name = config.peerName;
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var peer_video = config.peerVideo;
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var peer_audio = config.peerAudio;
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var peer_hand = config.peerHand;
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if (channel in socket.channels) {
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logme("[" + socket.id + "] [Warning] already joined", channel);
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return;
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}
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// no channel aka room in channels init
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if (!(channel in channels)) {
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channels[channel] = {};
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}
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// no channel aka room in peers init
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if (!(channel in peers)) {
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peers[channel] = {};
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}
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// collect peers info grp by channels
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peers[channel][socket.id] = {
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peer_name: peer_name,
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peer_video: peer_video,
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peer_audio: peer_audio,
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peer_hand: peer_hand,
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};
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logme("connected peers grp by roomId", peers);
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for (var id in channels[channel]) {
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// offer false
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channels[channel][id].emit("addPeer", {
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peer_id: socket.id,
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peers: peers[channel],
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should_create_offer: false,
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iceServers: iceServers,
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});
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// offer true
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socket.emit("addPeer", {
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peer_id: id,
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peers: peers[channel],
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should_create_offer: true,
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iceServers: iceServers,
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});
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logme("[" + socket.id + "] emit add Peer [" + id + "]");
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}
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channels[channel][socket.id] = socket;
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socket.channels[channel] = channel;
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});
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/**
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* Remove peers from channel aka room
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* @param {*} channel
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*/
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async function removePeerFrom(channel) {
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if (!(channel in socket.channels)) {
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logme("[" + socket.id + "] [Warning] not in ", channel);
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return;
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}
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delete socket.channels[channel];
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delete channels[channel][socket.id];
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delete peers[channel][socket.id];
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// if not channel aka room in peers remove it
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if (Object.keys(peers[channel]).length === 0) {
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delete peers[channel];
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}
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for (var id in channels[channel]) {
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await channels[channel][id].emit("removePeer", { peer_id: socket.id });
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await socket.emit("removePeer", { peer_id: id });
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logme("[" + socket.id + "] emit remove Peer [" + id + "]");
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}
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}
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/**
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* Relay ICE to peers
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*/
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socket.on("relayICE", (config) => {
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let peer_id = config.peer_id;
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let ice_candidate = config.ice_candidate;
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/*
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logme(
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"[" + socket.id + "] relay ICE-candidate to [" + peer_id + "] ",
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{ address: config.ice_candidate.address }
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); // ice_candidate
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*/
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if (peer_id in sockets) {
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sockets[peer_id].emit("iceCandidate", {
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peer_id: socket.id,
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ice_candidate: ice_candidate,
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});
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}
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});
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/**
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* Relay SDP to peers
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*/
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socket.on("relaySDP", (config) => {
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let peer_id = config.peer_id;
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let session_description = config.session_description;
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logme(
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"[" + socket.id + "] relay SessionDescription to [" + peer_id + "] ",
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{ type: session_description.type }
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); // session_description
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if (peer_id in sockets) {
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sockets[peer_id].emit("sessionDescription", {
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peer_id: socket.id,
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session_description: session_description,
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});
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}
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});
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/**
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* Relay MSG to peers
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*/
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socket.on("msg", (config) => {
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let peerConnections = config.peerConnections;
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let room_id = config.room_id;
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let privateMsg = config.privateMsg;
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let id = config.peer_id;
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let name = config.name;
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let msg = config.msg;
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logme(
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"[" +
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socket.id +
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"] emit onMessage to [room_id: " +
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room_id +
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" private_msg: " +
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privateMsg +
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"]",
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{
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name: name,
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msg: msg,
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}
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);
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if (privateMsg) {
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if (sockets[id]) {
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sockets[id].emit("onMessage", {
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peer_id: socket.id,
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privateMsg: privateMsg,
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name: name,
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msg: msg,
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});
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}
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return;
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}
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for (var peer_id in peerConnections) {
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if (sockets[peer_id]) {
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sockets[peer_id].emit("onMessage", {
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peer_id: socket.id,
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privateMsg: privateMsg,
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name: name,
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msg: msg,
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});
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}
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}
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});
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/**
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* Relay NAME to peers
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*/
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socket.on("cName", (config) => {
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let peerConnections = config.peerConnections;
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let room_id = config.room_id;
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let peer_name_old = config.peer_name_old;
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let peer_name_new = config.peer_name_new;
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let peer_id_to_update = null;
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// update peers new name in the specified room
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for (var peer_id in peers[room_id]) {
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if (peers[room_id][peer_id]["peer_name"] == peer_name_old) {
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peers[room_id][peer_id]["peer_name"] = peer_name_new;
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peer_id_to_update = peer_id;
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/*
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logme("[" + socket.id + "] change peer name", {
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room_id: room_id,
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peer_id: peer_id,
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peer_name_old: peer_name_old,
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peer_name_new: peer_name_new,
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});
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*/
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}
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}
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// refresh if found
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if (peer_id_to_update && Object.keys(peerConnections).length != 0) {
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logme("[" + socket.id + "] emit onCName to [room_id: " + room_id + "]", {
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peer_id: peer_id_to_update,
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peer_name: peer_name_new,
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});
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for (var peer_id in peerConnections) {
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if (sockets[peer_id]) {
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sockets[peer_id].emit("onCName", {
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peer_id: peer_id_to_update,
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peer_name: peer_name_new,
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});
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}
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}
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}
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});
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/**
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* Relay Audio Video Hand ... Status to peers
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*/
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socket.on("peerStatus", (config) => {
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let peerConnections = config.peerConnections;
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let room_id = config.room_id;
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let peer_name = config.peer_name;
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let element = config.element;
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let status = config.status;
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// update peers video-audio status in the specified room
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for (var peer_id in peers[room_id]) {
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if (peers[room_id][peer_id]["peer_name"] == peer_name) {
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switch (element) {
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case "video":
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peers[room_id][peer_id]["peer_video"] = status;
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break;
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case "audio":
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peers[room_id][peer_id]["peer_audio"] = status;
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break;
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case "hand":
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peers[room_id][peer_id]["peer_hand"] = status;
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break;
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}
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/*
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logme("[" + socket.id + "] change " + element + " status", {
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room_id: room_id,
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peer_name: peer_name,
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element: element,
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status: status,
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});
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*/
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}
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}
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// socket.id aka peer that send this status
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if (Object.keys(peerConnections).length != 0) {
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logme(
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"[" + socket.id + "] emit onpeerStatus to [room_id: " + room_id + "]",
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{
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peer_id: socket.id,
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element: element,
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status: status,
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}
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);
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for (var peer_id in peerConnections) {
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if (sockets[peer_id]) {
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sockets[peer_id].emit("onpeerStatus", {
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peer_id: socket.id,
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element: element,
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status: status,
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});
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}
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}
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}
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});
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/**
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* Relay mute everyone in the room
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*/
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socket.on("muteEveryone", (config) => {
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let peerConnections = config.peerConnections;
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let room_id = config.room_id;
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let peer_name = config.peer_name;
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// socket.id aka peer that send this status
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if (Object.keys(peerConnections).length != 0) {
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logme(
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"[" + socket.id + "] emit onmuteEveryone to [room_id: " + room_id + "]",
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{
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peer_id: socket.id,
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peer_name: peer_name,
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}
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);
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for (var peer_id in peerConnections) {
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if (sockets[peer_id]) {
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sockets[peer_id].emit("onmuteEveryone", {
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peer_name: peer_name,
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});
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}
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}
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}
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});
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/**
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* Relay hide everyone in the room
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*/
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socket.on("hideEveryone", (config) => {
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let peerConnections = config.peerConnections;
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let room_id = config.room_id;
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let peer_name = config.peer_name;
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|
||
// socket.id aka peer that send this status
|
||
if (Object.keys(peerConnections).length != 0) {
|
||
logme(
|
||
"[" + socket.id + "] emit onhideEveryone to [room_id: " + room_id + "]",
|
||
{
|
||
peer_name: peer_name,
|
||
}
|
||
);
|
||
for (var peer_id in peerConnections) {
|
||
if (sockets[peer_id]) {
|
||
sockets[peer_id].emit("onhideEveryone", {
|
||
peer_name: peer_name,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
/**
|
||
* Relay Kick out peer from room
|
||
*/
|
||
socket.on("kickOut", (config) => {
|
||
let room_id = config.room_id;
|
||
let peer_id = config.peer_id;
|
||
let peer_name = config.peer_name;
|
||
|
||
logme(
|
||
"[" +
|
||
socket.id +
|
||
"] kick out peer [" +
|
||
peer_id +
|
||
"] from room_id [" +
|
||
room_id +
|
||
"]"
|
||
);
|
||
|
||
if (peer_id in sockets) {
|
||
sockets[peer_id].emit("onKickOut", {
|
||
peer_name: peer_name,
|
||
});
|
||
}
|
||
});
|
||
|
||
/**
|
||
* Relay File info
|
||
*/
|
||
socket.on("fileInfo", function (config) {
|
||
let peerConnections = config.peerConnections;
|
||
let room_id = config.room_id;
|
||
let peer_name = config.peer_name;
|
||
let file = config.file;
|
||
|
||
logme(
|
||
"[" +
|
||
socket.id +
|
||
"] Peer [" +
|
||
peer_name +
|
||
"] send file to room_id [" +
|
||
room_id +
|
||
"]",
|
||
{
|
||
fileName: file.fileName,
|
||
fileSize: bytesToSize(file.fileSize),
|
||
fileType: file.fileType,
|
||
}
|
||
);
|
||
|
||
function bytesToSize(bytes) {
|
||
var sizes = ["Bytes", "KB", "MB", "GB", "TB"];
|
||
if (bytes == 0) return "0 Byte";
|
||
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
|
||
return Math.round(bytes / Math.pow(1024, i), 2) + " " + sizes[i];
|
||
}
|
||
|
||
if (Object.keys(peerConnections).length != 0) {
|
||
for (var peer_id in peerConnections) {
|
||
if (sockets[peer_id]) {
|
||
sockets[peer_id].emit("onFileInfo", file);
|
||
}
|
||
}
|
||
}
|
||
});
|
||
}); // end [sockets.on-connect]
|
||
|
||
/**
|
||
* log with UTC data time
|
||
* @param {*} msg message any
|
||
* @param {*} op optional params
|
||
*/
|
||
function logme(msg, op = "") {
|
||
let dataTime = new Date().toISOString().replace(/T/, " ").replace(/Z/, "");
|
||
console.log("[" + dataTime + "] " + msg, op);
|
||
}
|