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server.js
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server.js
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'use strict';
var os = require('os');
var nodeStatic = require('node-static');
var http = require('http');
var socketIO = require('socket.io');
var fileServer = new (nodeStatic.Server)();
var port = process.env.PORT || 8080;
var app = http.createServer(function (req, res) {
fileServer.serve(req, res);
}).listen(port);
var io = socketIO.listen(app);
var roomsStates = {};
io.sockets.on('connection', function (socket) {
// convenience function to log server messages on the client
function log() {
var array = ['Message from server:'];
array.push.apply(array, arguments);
socket.emit('log', array);
}
socket.on('roomMessage', function (roomMessage) {
log('Client said for room:', roomMessage.room, ', message:', roomMessage.message);
io.sockets.in(roomMessage.room).emit('message', roomMessage.message);
});
socket.on('create or join', function (roomName) {
log('Received request to create or join room ' + roomName);
var roomClientsCount = getRoomClientsCount();
if (roomClientsCount === 0) {
socket.join(roomName);
log('Client ID ' + socket.id + ' created room ' + roomName);
socket.emit('created', roomName, socket.id);
} else if (roomClientsCount === 1) {
log('Client ID ' + socket.id + ' joined room ' + roomName);
io.sockets.in(roomName).emit('join', roomName);
socket.join(roomName);
socket.emit('joined', roomName, socket.id);
io.sockets.in(roomName).emit('ready');
} else { // max two clients
socket.emit('full', roomName);
}
log('Room ' + roomName + ' now has ' + getRoomClientsCount() + ' client(s)');
function getRoomClientsCount() {
var room = socket.adapter.rooms[roomName];
return room ? room.length : 0;
}
});
socket.on('disconnect', function () {
});
socket.on('ipaddr', function () {
var ifaces = os.networkInterfaces();
for (var dev in ifaces) {
ifaces[dev].forEach(function (details) {
if (details.family === 'IPv4' && details.address !== '127.0.0.1') {
socket.emit('ipaddr', details.address);
}
});
}
});
});