A simple "chat" application using Node.js

chat.js

/*
Usage:
  $ node chat.js
  $ curl http://127.0.0.1:8124/say?one
  // say!
  $ curl http://127.0.0.1:8124/say?two
  // say!
  $ curl http://127.0.0.1:8124/ask
  // ["one", "two"]
*/

// chat.js
var sys = require('sys'),
  url = require('url'),
  http = require('http');

var messages = [];

http.createServer(function (request, response) {
  var req = url.parse(request.url);
  
  if (req.pathname == '/say') {
    messages.push(req.query);
    sendResponse('say!', 200, response);
  }
  else if (req.pathname == '/ask') {
    sendResponse(JSON.stringify(messages), 200, response);
  }
  else {
    sendResponse('not found!', 404, response);
  }
}).listen(8124);

function sendResponse(bodyText, httpCode, response){
  response.writeHead(httpCode, {
    'Content-Length': bodyText.length,
    'Content-Type': 'text/plain'
  });
  response.end(bodyText);		
}