Quick and dirty Http client/server code with node.js

Http Server (sampler)

This node.js Http server samples a metric and serves it at regular intervals.

var http = require('http');
var number = 0;

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var num = number.toString();
  res.end('Hello World ' + num + '\n' );
}).listen(1337, '127.0.0.1');

var interval = setInterval(function(){
  number++; 
},2000);

console.log('Server running at http://127.0.0.1:1337/');

Http Client (poller)

This node.js Http client polls (requests) data at regular intervals.

To test start server on a terminal, then client on a different terminal.

var http = require('http');

var interval = setInterval(function(){

  http.get("http://127.0.0.1:1337", function(res) {
    console.log("Got response: " + res.statusCode);
    res.on('data', function (chunk) {
      console.log('BODY: ' + chunk);
    });
  }).on('error', function(e) {
    console.log("Got error: " + e.message);
  });
},2000);

Http Client (agent)

This node.js Http client, when requested redirects GET request to the server on port 1337 and returns the response on port 1338.

To test start server on a terminal, then agent on a different terminal. On a browser request/refresh "http://127.0.0.1/1338".

var http = require('http');

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});

  http.get("http://127.0.0.1:1337", function(_res) {
    console.log("Got response: " + _res.statusCode);
    _res.on('data', function (chunk) {
      res.end('BODY: ' + chunk);
      console.log('BODY: ' + chunk);
    });
   }).on('error', function(e) {
      console.log("Got error: " + e.message);
  });

}).listen(1338, '127.0.0.1');