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www.mjs
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www.mjs
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#!/usr/bin/env node --experimental-specifier-resolution=node
/* eslint-disable no-console */
/**
* Module dependencies.
*/
import http from 'http';
import WebSocket from 'ws';
import app from '../app';
/**
* Normalize a port into a number, string, or false.
*/
function normalizePort(val) {
const port = parseInt(val, 10);
if (Number.isNaN(port)) {
// named pipe
return val;
}
if (port >= 0) {
// port number
return port;
}
return false;
}
/**
* Event listener for HTTP server "error" event.
*/
function onErrorListener(port) {
return function onError(error) {
if (error.syscall !== 'listen') {
throw error;
}
const bind = typeof port === 'string'
? `Pipe ${port}`
: `Port ${port}`;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
console.error(`${bind} requires elevated privileges`);
process.exit(1);
break;
case 'EADDRINUSE':
console.error(`${bind} is already in use`);
process.exit(1);
break;
default:
throw error;
}
};
}
/**
* Event listener for HTTP server "listening" event.
*/
function onListeningListener(server) {
return function onListening() {
const addr = server.address();
const bind = typeof addr === 'string'
? `pipe ${addr}`
: `port ${addr.port}`;
console.log(`Listening on ${bind}`);
};
}
/**
* Get port from environment and store in Express.
*/
const port = normalizePort(process.env.PORT || '3000');
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', onErrorListener(port));
server.on('listening', onListeningListener(server));
const wss = new WebSocket.Server({ noServer: true });
wss.on('connection', (ws) => {
ws.on('message', (data) => {
console.log('WS server got message: ', data);
console.log('WS client count: ', wss.clients.length || 0);
wss.clients.forEach((client) => {
if (client !== ws && client.readyState === WebSocket.OPEN) {
console.log('WS sending message to client');
client.send(data);
}
});
});
});
server.on('upgrade', (request, socket, head) => {
wss.handleUpgrade(request, socket, head, (ws) => {
wss.emit('connection', ws, request);
});
});