A Simple node.js chat server using telent from O'reilly's node up and running.

server-telnet-node-chat.js

// A Simple nod.js chat server using telent from O'reilly's node up and running


var net = require('net')

var chatServer = net.createServer()
	clientList = []

chatServer.on('connection', function(client) {
	client.name = client.remoteAddress + ':' + client.remotePort
	client.write('Hi ' + client.name + '!\n');
	
	clientList.push(client)

	client.on('data', function(data) {	
		broadcast(data, client)
	})

	client.on('end', function() { 
		clientList.splice(clientList.indexOf(client), 1)
  })

})

function broadcast(message, client) {
	// Echo the sending client's name to all clients receiving the message
	for(var i=0;i<clientList.length;i+=1) {
		if(client !== clientList[i]) {
			clientList[i].write(client.name + " said: " + message)
		}
		// Echo the >> character so client sending knows he sent it
		else client.write(">> " + message)
	}	
}

chatServer.listen(9000)
console.log('Listening on port 9000...');

Let's figure out how to include the date and time each message was sent, and echo that back to the client(s). It is probably pretty simple to do with javascript.