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server.js
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server.js
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#!/bin/env node
// OpenShift sample Node application
var express = require('express');
var fs = require('fs');
var http = require('http');
var holla = require('holla');
var io = require('socket.io');
var webRTC = require('webrtc.io');
/**
* Define the sample application.
*/
var SampleApp = function() {
// Scope.
var self = this;
/* ================================================================ */
/* Helper functions. */
/* ================================================================ */
/**
* Set up server IP address and port # using env variables/defaults.
*/
self.setupVariables = function() {
// Set the environment variables we need.
self.ipaddress = process.env.OPENSHIFT_INTERNAL_IP || process.env.OPENSHIFT_NODEJS_IP;
self.port = process.env.OPENSHIFT_INTERNAL_PORT || process.env.OPENSHIFT_NODEJS_PORT || 8080;
if (typeof self.ipaddress === "undefined") {
// Log errors on OpenShift but continue w/ 127.0.0.1 - this
// allows us to run/test the app locally.
console.warn('No OPENSHIFT_NODEJS_IP var, using 0.0.0.0');
self.ipaddress = "0.0.0.0";
};
};
/**
* Populate the cache.
*/
self.populateCache = function() {
if (typeof self.zcache === "undefined") {
self.zcache = { 'index.html': '' };
}
// Local cache for static content.
self.zcache['index.html'] = fs.readFileSync('./public/index.html');
};
/**
* Retrieve entry (content) from cache.
* @param {string} key Key identifying content to retrieve from cache.
*/
self.cache_get = function(key) { return self.zcache[key]; };
/**
* terminator === the termination handler
* Terminate server on receipt of the specified signal.
* @param {string} sig Signal to terminate on.
*/
self.terminator = function(sig){
if (typeof sig === "string") {
console.log('%s: Received %s - terminating sample app ...',
Date(Date.now()), sig);
process.exit(1);
}
console.log('%s: Node server stopped.', Date(Date.now()) );
};
/**
* Setup termination handlers (for exit and a list of signals).
*/
self.setupTerminationHandlers = function(){
// Process on exit and signals.
process.on('exit', function() { self.terminator(); });
// Removed 'SIGPIPE' from the list - bugz 852598.
['SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT',
'SIGBUS', 'SIGFPE', 'SIGUSR1', 'SIGSEGV', 'SIGUSR2', 'SIGTERM'
].forEach(function(element, index, array) {
process.on(element, function() { self.terminator(element); });
});
};
/* ================================================================ */
/* App server functions (main app logic here). */
/* ================================================================ */
/**
* Create the routing table entries + handlers for the application.
*/
self.createRoutes = function() {
self.routes = { };
// Routes for /health, /asciimo, /env and /
self.routes['/health'] = function(req, res) {
res.send('1');
};
self.routes['/asciimo'] = function(req, res) {
var link = "http://i.imgur.com/kmbjB.png";
res.send("<html><body><img src='" + link + "'></body></html>");
};
self.routes['/env'] = function(req, res) {
var content = 'Version: ' + process.version + '\n<br/>\n' +
'Env: {<br/>\n<pre>';
// Add env entries.
for (var k in process.env) {
content += ' ' + k + ': ' + process.env[k] + '\n';
}
content += '}\n</pre><br/>\n'
res.send(content);
res.send('<html>\n' +
' <head><title>Node.js Process Env</title></head>\n' +
' <body>\n<br/>\n' + content + '</body>\n</html>');
};
self.routes['/'] = function(req, res) {
res.set('Content-Type', 'text/html');
res.send(self.cache_get('index.html') );
};
};
/**
* Initialize the server (express) and create the routes and register
* the handlers.
*/
self.initializeServer = function() {
// self.createRoutes();
self.app = express();
self.app.use(express.static(__dirname + "/public"))
// Add handlers for the app (from the routes).
/*
for (var r in self.routes) {
self.app.get(r, self.routes[r]);
}
*/
};
/**
* Initializes the sample application.
*/
self.initialize = function() {
self.setupVariables();
self.populateCache();
self.setupTerminationHandlers();
// Create the express server and routes.
self.initializeServer();
};
/**
* Start the server (starts up the sample application).
*/
self.start = function() {
// Start the app on the specific interface (and port).
/*
self.rtc.listen(self.port, self.ipaddress, function() {
});
*/
console.log('About to listen on port:', self.port, 'and host:', self.ipaddress);
self.server = http.createServer(self.app).listen(self.port, self.ipaddress);
// self.rtc = holla.createServer(self.server, {debug: true, presence: true});
console.log('%s: Node server started on %s:%d ...',
Date(Date.now()), self.ipaddress, self.port);
self.io = io.listen(self.server);
self.io.on('connection', self.connect);
webRTC.listen(self.server);
self.ar = null;
self.wg = null;
webRTC.on('join_room', function(args) {
console.log('Join_room:', args);
});
};
self.mute = function(data) {
if (self.wg) {
console.log('emitting mute yourself to WG');
self.wg.emit('set mute', data);
}
};
self.connect = function(client) {
var numClients = Object.keys(self.io.connected).length;
console.log('New connection over engineio,', numClients, 'connected');
client.on('id', function(params) {
console.log('id received from client', params);
if (params['id'] == 'ar') {
// AR connected
self.ar = client;
} else {
self.wg = client;
}
client.set('id', params['id'], function() {
client.emit('ready', {id: params['id'], clients: numClients});
});
});
client.on('disconnect', function() {
console.log('Client', client, 'disconnected');
});
client.on('set mute', function(data) {
self.mute(data);
});
client.on('error', function(err) {
console.log('Error:', err);
});
client.on('packet', function(type, data) {
console.log('Packet type:', type, 'data:', data);
});
};
}; /* Sample Application. */
/**
* main(): Main code.
*/
var zapp = new SampleApp();
zapp.initialize();
zapp.start();