uppercaser.js

/**
 Write an HTTP server that receives only POST requests and converts
 incoming POST body characters to upper-case and returns it to the
 client.

 Your server should listen on port 8000.

 ----------------------------------------------------------------------
 HINTS:

 While you're not restricted to using the streaming capabilities of the
 `request` and `response` objects, it will be much easier if you do.

 There are a number of different packages in npm that you can use to
 "transform" stream data as it's passing through. For this exercise
 the `through2-map` package offers the simplest API.

 `through2-map` allows you to create a transform stream using
 only a single function that takes a chunk of data and returns a chunk
 of data. It's designed to work much like `Array#map()` but for
 streams:

 var map = require('through2-map')
 inStream.pipe(map(function (chunk) {
    return chunk.toString().split('').reverse().join('')
  }).pipe(outStream)

 In the above example, the incoming data from `inStream` is converted
 to a String (if it isn't already), the characters are reversed and the
 result is passed through to `outStream`. So we've made a chunk
 character reverser! Remember though that the chunk size is determined
 up-stream and you have little control over it for incoming data.

 */

var http = require('http');
var fs = require('fs');

var server = http.createServer(function(req, res) {
	if(req.method='POST'){
		var body='';
		req.on('data', function(chunk){
			   body+=chunk;
		 });
		req.on('end', function(){
			 res.write(body.toUpperCase());
			res.end();
		});
	}


});

server.listen(8000);