/*

A simple TCP chat server in node.js.

Minimal code for listening for clients.

Prints out what the clients say.

Echoes back to each client.

created 22 Oct 2018

by Tom Igoe

*/

// make an instance of the net library:

const net = require('net');

// create the server:

var server = net.createServer(listenForClients);

// start the server listening:

server.listen(8080);

// This function is called every time a new client connects:

function listenForClients(client) {

console.log('client connected at ' + new Date());

console.log('client: ' + client.remoteAddress);

// client.setEncoding('utf8'); // encode everything sent by the client as a string

client.write('hello'); // send the client a hello message

function readIncoming(data) {

console.log(client.remoteAddress + ': ' + data); // print what the client said

}

// client event handler. runs if there's incoming socket data:

client.on('data', readIncoming);

}