yekonga-server/src/core/peer.js

Yekonga Server

// @ts-nocheck

module.exports = (socketServer, options) => {
    var localOptions = {
        debug: true
    }

    new PeerConnection(socketServer, options);
}

class PeerConnection {
    constructor(socket, options) {
        options = options || {};
        this.path = '/peer';
        this._peerDevices = {}
        this._peerRooms = {}

        this._socket = socket.of(this.path);
        this.initializeSocket();
    } 

    initializeSocket() { 
        this._socket.on('connection', (socket) => {
            // console.warn(`connected: /peer`);

            // socket.on("open",  (data) => {
            //     data = data || {}
            //     var peerId = (data.peerId)? data.peerId: Yekonga.Helper.uuid4('peerId');
            //     socket.join(peerId);
            //     console.debug(`open: ${peerId}`);

            //     socket.emit('open', { peerId, type: "general" })
            // }) 

            socket.on('join', ({roomId, userId, peerId, profile }) => {
                peerId = (peerId)? peerId: Yekonga.Helper.uuid4('peerId');
                if(!socket.data) socket.data = {}
                console.debug(`join: ${peerId}`);
                
                socket.data.userId = userId;
                socket.data.roomId = roomId;
                socket.data.peerId = peerId;
                socket.data.profile = profile;
                socket.join(roomId);

                socket.emit('open', { peerId, type: "general" });
                
                if (!this._peerDevices[peerId]) {
                    socket.broadcast.to(roomId).emit('request', { roomId, userId, peerId, profile })
                } else {
                    socket.broadcast.to(roomId).emit('session-active', { roomId, userId, peerId, profile })
                }
                
                this._peerDevices[peerId] = { roomId }; 
            });

            socket.on('offer', ({roomId, userId, peerId, offer, profile, to}) => {
                this._peerDevices[peerId]['offer'] = offer; 

                socket.broadcast.to(roomId).emit(`offer-${to}`, {roomId, userId, peerId, offer, profile})
            })

            socket.on('answer', ({roomId, userId, peerId, answer, profile, to}) => {
                this._peerDevices[peerId]['answer'] = answer; 

                socket.broadcast.to(roomId).emit(`answer-${to}`, {roomId, userId, peerId, answer, profile})
            })

            socket.on('leave', (data) => {
                var { roomId, peerId, userId } = data || {}
                
                this._peerDevices[peerId] = undefined;
                socket.broadcast.to(roomId).emit('leave', {userId, peerId})
            });

            socket.on('disconnect', () => {
                if(!socket.data) socket.data = {}

                const roomId = socket.data.roomId;
                const userId = socket.data.userId;
                const peerId = socket.data.peerId;
                const devices = Object.keys(this._peerDevices).length;

                if (devices > 0) {
                    if (devices <= 2) {
                        socket.broadcast.emit("leave", {userId, peerId, roomId})
                    }
                    this._peerDevices[peerId] = undefined;
                } 

                console.debug(`${this.path} (${roomId}) => disconnect`);
                if(roomId) {
                    socket.leave(roomId);
                    socket.broadcast.to(roomId).emit('leave', {userId, peerId, roomId});
                }
            })

            socket.on('error', function (e) {
                console.debug('socket.io error:' + e);
            });
        });
    }
}