Scraper based on Socket

gistfile1.js

var net 	= require('net');
var socket 	= net.Socket();
socket.on('error', function(error) {
	console.log(error);
});

process.argv.forEach(function (value, index, array) {

	if ( value !== "node" &&
		value !== __filename ) processValue(value);

});

function processValue(value, loop) {

	value = value.split("/");

	var options = {};
	var setting = {};
	options.port = 80;
	setting.path = "/";

	if( value.length === 1 ) {
		options.host = value[0];
	} else {
		if( value[0] === "http:" ||
			value[0] === "https:" ) {
			options.host = value[2];
			setting.path += value.slice(3).join("/");
		}
	}

	setting.request = 'GET ' + setting.path + ' HTTP/1.1\r\nUser-Agent: Mozilla 5.0\r\nHost: ' + options.host + '\r\n\r\n';

	initiateSocket(options, setting, loop);

}

function initiateSocket(options, setting, loop) {

	socket = net.connect(options, function() {
		socket.write(setting.request);
	});

	socket.on('data', function(data) {

		data = data.toString();

		if( data.indexOf("301 Moved Permanently") === -1 &&
			data.indexOf("302 Moved Temporarily") === -1 &&
			data.indexOf("302 Found") === -1 ) {

			//No Redirect
			socket.write(data);
			//console.log(data);
			if( data.indexOf("</html>") !== -1 ) {
				socket.end();
			}
			
		} else {

			loop = true;
			socket.end();

			var startIndex = data.indexOf("\nLocation: ") + "Location: ".length;
			var endIndex = data.indexOf("\n", startIndex);
			var newPlace = data.slice(startIndex + 1, endIndex);
			processValue(newPlace, true);

		}
	});

	return;

}