code: function parseHttpBody(req, cb) {
  	// check for multipart streams that can contain file uploads
  
  	var contentType = req.headers['content-type'];
  	var m = contentType && contentType.match(/^multipart\/form-data; boundary=(.+)$/);
  
  	if (m && m[1]) {
  		parseMultipart(req, m[1], cb);
  	} else {
  		parseSinglepart(req, cb);
  	}
  }
docs: Streams and parses an HTTP request by calling into parseSinglepart or parseMultipart.
  
  @param {Object}   req       The HTTP request.
  @param {Function} cb        Callback on completion.