Node.js C9 backup Testing123

Probably output of that Getting started with Node.js ebook workbook

index.js

var server = require("./server");
var router = require("./router");
var requestHandlers = require("./requestHandlers");

var handle = {}
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
handle["/show"] = requestHandlers.show;

server.start(router.route, handle);

requestHandlers.js

var querystring = require("querystring");
var fs = require("fs");

function start(response, postData) {
 console.log("Request handler 'start' was called.");
 var body = '<html>'+
 '<head>'+
 '<meta http-equiv="Content-Type" content="text/html; '+
 'charset=UTF-8" />'+
 '</head>'+
 '<body>'+
 '<form action="/upload" method="post">'+
 '<textarea name="text" rows="20" cols="60"></textarea>'+
 '<input type="submit" value="Submit text" />'+
 '</form>'+
 '</body>'+
 '</html>';
 response.writeHead(200, {"Content-Type": "text/html"});
 response.write(body);
 response.end();
}

function upload(response, postData) {
 console.log("Request handler 'upload' was called.");
 response.writeHead(200, {"Content-Type": "text/plain"});
 response.write("You've sent the text: "+
 querystring.parse(postData).text);
 response.end();
}

function show(response, postData) {
 console.log("Request handler 'show' was called.");
 fs.readFile("./tmp/kitty.jpg", "binary", function(error, file) {
 if(error) {
 response.writeHead(500, {"Content-Type": "text/plain"});
 response.write(error + "\n");
 response.end();
 } else {
 response.writeHead(200, {"Content-Type": "image/png"});
 response.write(file, "binary");
 response.end();
 }
 });
}

exports.start = start;
exports.upload = upload;
exports.show = show;

router.js

function route(handle, pathname, response, postData) {
 
 console.log("About to route a request for " + pathname);
 
 if (typeof handle[pathname] === 'function') {
 handle[pathname](response, postData);
 } else {
 console.log("No request handler found for " + pathname);
 response.writeHead(404, {"Content-Type": "text/plain"});
 response.write("404 Not found");
 response.end();
 }
}

exports.route = route;

server.js

var http = require("http");
var url = require("url");

function start(route, handle) {
 function onRequest(request, response) {
 var postData = "";
 var pathname = url.parse(request.url).pathname;
 console.log("Request for " + pathname + " received.");
 
 request.setEncoding("utf8");
 
 request.addListener("data", function(postDataChunk) {
 postData += postDataChunk;
 console.log("Received POST data chunk '"+
 postDataChunk + "'.");
 });
 
 request.addListener("end", function() {
 route(handle, pathname, response, postData);
 });
}
http.createServer(onRequest).listen(process.env.PORT, process.env.IP);
console.log("Server has started.");
}
exports.start = start;