117 lines
2.3 KiB
JavaScript
117 lines
2.3 KiB
JavaScript
const debug = require('@tryghost/debug')('server');
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const logging = require('@tryghost/logging');
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const http = require('http');
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let server;
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let normalizedPort;
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/**
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* Get port from nconf
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*/
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/**
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* @description Create a Node HTTP server.
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*
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* @param {Express} app
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* @param {any} port
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* @return {Object}
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*/
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const start = function start(app, port) {
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normalizedPort = normalizePort(port);
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server = http.createServer(app);
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/**
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* Listen on provided port, on all network interfaces.
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*/
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app.set('port', normalizedPort);
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server.listen(normalizedPort);
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server.on('error', onError);
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server.on('listening', onListening);
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return server;
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};
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/**
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* @description Stop Node HTTP server.
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* @param {Function} done
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*/
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const stop = function stop(done) {
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try {
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server.close(done);
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} catch (e) {
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/*jshint unused:false*/
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}
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};
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/**
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* Normalize a port into a number, string, or false.
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*/
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/**
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* @description Normalize a port.
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* @param {any} val
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* @return {Number|String|Boolean}
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*/
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function normalizePort(val) {
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const portVal = parseInt(val, 10);
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if (isNaN(portVal)) {
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// CASE: Named pipe
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return val;
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}
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if (portVal >= 0) {
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// port number
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return portVal;
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}
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return false;
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}
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/**
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* Event listener for HTTP server "error" event.
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*/
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/**
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* @description Event handler for HTTP server "error" event.
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* @param {Error} error
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*/
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function onError(error) {
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if (error.syscall !== 'listen') {
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throw error;
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}
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const bind = typeof normalizedPort === 'string'
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? `Pipe ${normalizedPort}`
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: `Port ${normalizedPort}`;
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// handle specific listen errors with friendly messages
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switch (error.code) {
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case 'EACCES':
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logging.error(`${bind} requires elevated privileges`);
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process.exit(1);
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break;
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case 'EADDRINUSE':
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logging.error(`${bind} is already in use`);
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process.exit(1);
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break;
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default:
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throw error;
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}
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}
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/**
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* @description Event handler for HTTP server "listening" event.
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*/
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function onListening() {
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const addr = server.address();
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const bind = typeof addr === 'string'
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? 'pipe ' + addr
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: 'port ' + addr.port;
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debug('Server ready');
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logging.info(`Listening on ${bind} \n`);
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}
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module.exports.start = start;
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module.exports.stop = stop; |