node.js request proxy and pipe

proxy-controller.js

	/**
	 * Sends the output from the request to the response
	 * 
	 * @param  {Object} req The request
	 * @param  {Object} res The response
	 */
	var pipeRequest = function(req, res) {
		req.on("error", function(error) {
			// Here we handle errors connecting to the server in the proxy
			if (error && error.code === "ECONNREFUSED") {
				console.error("Server is down or unreachable");
				res.send(500, "Server is unavailable");
			} else {
				res.send(500, "Unknown error");
			}
		});
		req.pipe(res);
	};

	/**
	 * Proxy's a GET request to the proxy URL, built from the proxyServer
	 * and proxyPort.  Then pipe's the output of the request to the response.
	 * 
	 * @param  {Object} req The request
	 * @param  {Object} res The response
	 */
	var proxyGET = function(req, res) {
		var proxyUrl, _req;

		proxyUrl = proxyServer + ':' + proxyPort + req.path;

		_req = request.get(proxyUrl);
		pipeRequest(_req, res);
	};

	/**
	 * Proxy's a POST request to the proxy URL, built from the proxyServer
	 * and proxyPort.  Then pipe's the output of the request to the response.
	 * 
	 * @param  {Object} req The request
	 * @param  {Object} res The response
	 */
	var proxyPOST = function(req, res) {
		var proxyUrl, defaultRequest, _req;

		proxyUrl = proxyServer + ':' + proxyPort + req.path;
		defaultRequest = request.defaults({
			json: true,
			headers: {
				"Content-Type":"application/json"
			},
			body: req.body
		});
		_req = defaultRequest.post(proxyUrl);
		pipeRequest(_req, res);
	};