bin/www

   1 #!/usr/bin/env node
   2
   3 /**
   4  * Module dependencies.
   5  */
   6
   7 var app = require('../app');
   8 var debug = require('debug')('vc:server');
   9 var http = require('http');
  10
  11 /**
  12  * Get port from environment and store in Express.
  13  */
  14
  15 var port = normalizePort(process.env.PORT || '3000');
  16 app.set('port', port);
  17
  18 /**
  19  * Create HTTP server.
  20  */
  21
  22 var server = http.createServer(app);
  23
  24 /**
  25  * Listen on provided port, on all network interfaces.
  26  */
  27
  28 server.listen(port);
  29 server.on('error', onError);
  30 server.on('listening', onListening);
  31
  32 /*
  33  * Sockets handling
  34  */
  35
  36 const WebSocket = require('ws');
  37 const wss = new WebSocket.Server({ server: server });
  38 require('../sockets')(wss);
  39
  40 /**
  41  * Normalize a port into a number, string, or false.
  42  */
  43
  44 function normalizePort(val) {
  45   var port = parseInt(val, 10);
  46
  47   if (isNaN(port)) {
  48     // named pipe
  49     return val;
  50   }
  51
  52   if (port >= 0) {
  53     // port number
  54     return port;
  55   }
  56
  57   return false;
  58 }
  59
  60 /**
  61  * Event listener for HTTP server "error" event.
  62  */
  63
  64 function onError(error) {
  65   if (error.syscall !== 'listen') {
  66     throw error;
  67   }
  68
  69   var bind = typeof port === 'string'
  70     ? 'Pipe ' + port
  71     : 'Port ' + port;
  72
  73   // handle specific listen errors with friendly messages
  74   switch (error.code) {
  75     case 'EACCES':
  76       console.error(bind + ' requires elevated privileges');
  77       process.exit(1);
  78       break;
  79     case 'EADDRINUSE':
  80       console.error(bind + ' is already in use');
  81       process.exit(1);
  82       break;
  83     default:
  84       throw error;
  85   }
  86 }
  87
  88 /**
  89  * Event listener for HTTP server "listening" event.
  90  */
  91
  92 function onListening() {
  93   var addr = server.address();
  94   var bind = typeof addr === 'string'
  95     ? 'pipe ' + addr
  96     : 'port ' + addr.port;
  97   debug('Listening on ' + bind);
  98 }