Node scripts

http-get.js

var bl = require('bl'),
  http = require('http');

function getResponse(url, callback) {
  http.get(url, function (response) {
    response.pipe(bl(function (err, data) {
      if (err) {
        return console.error(err);
      }

      callback(data.toString());
    }));
  });
}

getResponse(process.argv[2], function (data) {
  console.log(data);
});

http-post.js

var bl = require('bl'),
  http = require('http'),
  parseurl = require('url').parse;

function getResponse(url, payload, callback) {
  var urlParts = parseurl(url),
    options = {
      hostname: urlParts.hostname,
      port: urlParts.port,
      path: urlParts.path,
      method: 'POST'
    };

  var request = http.request(options, function (response) {
    response.pipe(bl(function (err, data) {
      if (err) {
        return console.error(err);
      }

      callback(data.toString());
    }));
  });

  request.write(encodeURIComponent(payload));
  request.end();
}

getResponse(process.argv[2], process.argv[3], function (data) {
  console.log(data);
});

http-server.js

var fs = require('fs'),
  http = require('http'),
  path= require('path'),
  url = require('url'),
  mimeTypes = {
    '.css': 'text/css',
    '.html': 'text/html',
    '.jpeg': 'image/jpeg',
    '.jpg': 'image/jpeg',
    '.js': 'text/javascript',
    '.json': 'application/json',
    '.png': 'image/png',
    '.txt': 'text/plain'
  };

http.createServer(function (request, response) {
  console.log(request.method, request.url);
  var pathName = url.parse(request.url).pathname,
    filePath = path.join(process.cwd(), pathName);
  fs.stat(filePath, function (err, stats) {
    if (err) {
      response.statusCode = 404;
      response.setHeader('Content-Type', 'text/plain');
      response.write('404 Not Found\n')
      response.end();
      return;
    }
    if (!stats.isFile()) {
      response.statusCode = 403;
      response.setHeader('Content-Type', 'text/plain');
      response.write('403 Forbidden\n')
      response.end();
      return;
    }
    var fileExt = path.extname(filePath),
      mimeType = mimeTypes[fileExt] || 'text/plain';
    response.statusCode = 200;
    response.setHeader('Content-Type', mimeType);
    fs.createReadStream(filePath).pipe(response);
  });
}).listen(7654);

console.log('Listening on http://localhost:7654...');