A Node.js app that allows the use of the Twitter API by client-side JavaScript.

twitter_api_proxy.js

/*
  A simple Node.js proxy for Twitter's OAuth API.
*/

var http = require('http');
var url = require('url');
var t = require('twitter-js-client');

var twitter = new t.Twitter({
  "consumerKey": "###",
  "consumerSecret": "###",
  "accessToken": "###",
  "accessTokenSecret": "###",
  "callBackUrl": "http://dvbris.com"
});

http.createServer(function (req, res) {
  var url_parts = url.parse(req.url, true);

  res.writeHead(200, {'Content-Type': 'application/json'});
  function error(err) {
    res.end(JSON.stringify(err));
  }
  function success(data) {
    res.end(data);
  }
  twitter.doRequest(decodeURIComponent(url_parts.query.api_url), error, success);

}).listen(6001);
console.log('Server running at localhost:6001');

Allows Twitter API requests from client side JavaScript.