A Well commented http server written in node.

nodejs-http-server

/*
A well commented http server written in node.

Written by: Tom Lane, http://github.com/tomlane

All Public Work by Tom Lane is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 UK: England & Wales License.
*/

//calling the required http and fs modules
var http = require('http');
var fs = require('fs');

//create a new http server.
var httpserver = http.Server();

//convert html files in to variables so that it will be easier to code later.
var index = fs.readFileSync("index.html");
var about = fs.readFileSync("about.html");
var contact = fs.readFileSync("contact.html");

//function for every new request.
httpserver.on("request", function (request, response) {
	//check the url
	if (request.url === "/") { 
		//log the request.
		console.log("recieved request for index.html");
		//open a response with code 200.
		response.writeHead(200, {"Content-Type": "text/html"});
		//send the relevent file to client.
		response.write(index);
		//end the reponse.
		response.end();
	}

	else if (request.url === "/about") {
		console.log("recieved request for about.html");
		response.writeHead(200, {"Content-Type": "text/html"});
		response.write(about);
		response.end();
	}

	else if (request.url === "/contact") {
		console.log("recieved request for contact.html")
		response.writeHead(200, {"Content-Type": "text/html"});
		response.write(contact);
		response.end();
	}

	//If the request is not available send a 404 warning to the console and 404 to the client.
	else {
		//log the 404 in the console along with the url being requested by the client.
		console.warn("someone hit a 404! they were trying to access: " + request.url)
		//send 404 to the client. this could also link to a custom 404 page.
		response.writeHead(404);
		//end the response.
		response.end();
	}
})

//server port.
httpserver.listen('8000');