app/bin/www
#!/usr/bin/env node
/** Module dependencies */
const config = require('config');
const http = require('http');
const log = require('../src/components/log')(module.filename);
const app = require('../app');
/** Normalize a port into a number, string, or false. */
const normalizePort = (val) => {
const port = parseInt(val, 10);
if (isNaN(port)) {
// named pipe
return val;
}
if (port >= 0) {
// port number
return port;
}
return false;
};
/** Event listener for HTTP server "error" event. */
const onError = (error) => {
if (error.syscall !== 'listen') {
throw error;
}
const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
log.error(bind + ' requires elevated privileges', {
function: 'onError',
});
process.exit(1);
break;
case 'EADDRINUSE':
log.error(bind + ' is already in use', { function: 'onError' });
process.exit(1);
break;
default:
throw error;
}
};
/** Event listener for HTTP server "listening" event. */
const onListening = () => {
const addr = server.address();
const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port;
log.info('Listening on ' + bind);
};
/** Get port from environment and store in Express. */
const port = normalizePort(config.get('server.port'));
app.set('port', port);
/** Create HTTP server. */
const server = http.createServer(app);
/** Listen on provided port, on all network interfaces. */
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);