const uuid = require('node-uuid') // based off of https://github.com/andyet/signalmaster // since it was updated to socket.io 1.3.7 function safeCb(cb) { if (typeof cb === 'function') { return cb; } else { return function () {}; } } module.exports = function(io, stunservers, state) { io.on('connection', function (socket) { socket.resources = { screen: false, video: true, audio: false } // pass a message to another id socket.on('message', function (details) { if (!details) return var otherClient = io.to(details.to) if (!otherClient) return details.from = socket.id otherClient.emit('message', details) }) socket.on('shareScreen', function () { socket.resources.screen = true }) socket.on('unshareScreen', function (type) { socket.resources.screen = false removeFeed('screen') }) socket.on('join', join) function removeFeed(type) { if (socket.room) { io.sockets.in(socket.room).emit('remove', { id: socket.id, type: type }) if (!type) { socket.leave(socket.room) socket.room = undefined } } } function join(name, cb) { // sanity check if (typeof name !== 'string') return // leave any existing rooms removeFeed() safeCb(cb)(null, describeRoom(name)) socket.join(name) socket.room = name } // we don't want to pass "leave" directly because the // event type string of "socket end" gets passed too. socket.on('disconnect', function () { removeFeed() }) socket.on('leave', function () { removeFeed() }) socket.on('create', function (name, cb) { if (arguments.length == 2) { cb = (typeof cb == 'function') ? cb : function () {} name = name || uuid() } else { cb = name name = uuid() } // check if exists var room = io.nsps['/'].adapter.rooms[name] if (room && room.length) { safeCb(cb)('taken') } else { join(name) safeCb(cb)(null, name) } }) // support for logging full webrtc traces to stdout // useful for large-scale error monitoring socket.on('trace', function (data) { console.log('trace', JSON.stringify( [data.type, data.session, data.prefix, data.peer, data.time, data.value] )) }) }) function describeRoom(name) { var adapter = io.nsps['/'].adapter var sockets = adapter.rooms[name] || {} var result = { clients: {} } Object.keys(sockets).forEach(function (id) { result.clients[id] = adapter.nsp.connected[id].resources }) return result } function socketsInRoom(name) { return io.sockets.sockets(name).length } }