ch1

gistfile1.js

  var http = require('http'), 
  url = require('url'), 
  path = require('path'), 
  fs = require('fs'),
  config = require('./config.js')
  
  var PORT = config.PORT;
  var server = http.createServer(function (request, response) {
  
  		response.setHeader("Server", "ICBUNBSERVER");
  		var pathname = url.parse(request.url).pathname;
  		if (pathname.slice(-1) === "/") {
  			pathname = pathname + config.Welcome.file;
  		}
  		var realPath = path.join("static", path.normalize(pathname.replace(/\.\./g, "")));
  		
  		fs.exists(realPath, function (exists) {
  			if (!exists) {
  				response.writeHead(404, {
  					'Content-Type' : 'text/plain'
  				});
  
  				response.write("This request URL " + pathname + " was not found on this server.");
  				response.end();
  			} else {
  				fs.readFile(realPath, "binary", function (err, file) {
  					if (err) {
  						response.writeHead(500, {
  							'Content-Type' : 'text/plain'
  						});
  
  						response.end(err);
  					} else {
  						response.writeHead(200, {
  							'Content-Type' : 'text/html'
  						});
  
  						response.write(file, "binary");
  
  						response.end();
  					}
  				});
  			}
  		});
  	});
  
  server.listen(PORT);
  
  console.log("Server runing at port: " + PORT + ".");