A wrapper module for 'http.request' function...

urlrequest.js

// Based upon https://gist.github.com/1393666

var querystring = require('querystring'),
	url = require('url'),
	http = require('http');

/**
 * @param {string} reqUrl	The complete URL to send the request to
 * @param {Object} options	options of the request
 * @param {Function} cb		Callback function that is to be called with response / errors
 * 
 * Options: Can contain following keys: 
 *	- method (The HTTP method as string)
 * 	- headers (Array of request headers)
 * 	- params (Object of params to be sent along with the request)
 *	- format (The format in which the params has to be sent. Valid values: json | form. Defaults to form)
 * 
 * Callback format: <code>function(body, error, response) {}</code>
 *	- body: String. Content of the response.
 *	- error: Errors occured in the connection / request
 *	- response: The complete response object
 *	
 *	The caller should check for error parameter first. If an error occured, 
 * 	both body and response will be <code>null</code>
 */
exports.send = function(reqUrl, options, cb){
    if(typeof options === "function"){ cb = options; options = {}; }// incase no options passed in

    // parse url to chunks
    reqUrl = url.parse(reqUrl);

    // http.request settings
    var settings = {
        host: reqUrl.hostname,
        port: reqUrl.port || 80,
        path: reqUrl.pathname,
        headers: options.headers || {},
        method: options.method || 'GET'
    };

    // if there are params:
    if(options.params){
		var format = options.format || 'form';
		if(format == 'json') {
			options.params = JSON.stringify(options.params);
			settings.headers['Content-Type'] = 'application/json';
		} else {
			options.params = querystring.stringify(options.params);
			settings.headers['Content-Type'] = 'application/x-www-form-urlencoded';
		}
        settings.headers['Content-Length'] = options.params.length;
    };

    // MAKE THE REQUEST
    var req = http.request(settings);

    // if there are params: write them to the request
    if(options.params){ req.write(options.params) };

    // when the response comes back
    req.on('response', function(res){
        res.body = '';
        res.setEncoding('utf-8');

        // concat chunks
        res.on('data', function(chunk){ res.body += chunk });

        // when the response has finished
        res.on('end', function(){
            
            // fire callback
            cb(res.body, null, res);
        });
    });
	
	req.on('error', function(exception){
		cb(null, exception, null);
	});

    // end the request
    req.end();
}