serverChat.js

var express = require('express');

var LISTEN_PORT = 8296;

/* Create an express application. `app` is a common variable name used in many express.js tutorials */
var app = express();

/**
 * The bodyParser automatically handles the parsing of JSON requests for us. Don't forget to include it
 * if you expect to process JSON data in your HTTP requests.
 */
app.use(express.bodyParser());

// listen to the client
app.use(express.static(__dirname));

// all the messages
var allMsgs = [];

/*
 * app.post() defines an handler for HTTP GET requests. You can peek into the request data inside req.body.
 */
app.post('/chat', function (req,res) {
    if (req.body.message) {
        console.log('message received: "' + req.body.message + '"');
        allMsgs.push(req.body.message);
        console.log('allMsgs = ' + allMsgs.join("\n"));
    }
    res.send(null);
});

app.get('/chat', function (req, res) {
    // return all the chat msgs
    res.json(allMsgs);
});


/*
 * app.listen() starts the HTTP server on the given TCP port.
 */
app.listen(LISTEN_PORT, function () {
    console.log('Listening on ' + LISTEN_PORT + '...');
});