public function __construct(array $config = array()) {
		$defaults = array(
			'scheme' => 'http',
			'host' => 'localhost',
			'port' => null,
			'username' => null,
			'password' => null,
			'path' => null,
			'protocol' => null,
			'version' => '1.1',
			'headers' => array(),
			'body' => null
		);
		$config += $defaults;
		parent::__construct($config);

		if (strpos($this->host, '/') !== false) {
			list($this->host, $this->path) = explode('/', $this->host, 2);
		}
		$this->path = str_replace('//', '/', "/{$this->path}");
		$this->protocol = $this->protocol ?: "HTTP/{$this->version}";
	}