WP_Http_Streams

18#[AllowDynamicProperties]19class WP_Http_Streams {20	/**21	 * Send a HTTP request to a URI using PHP Streams.22	 *23	 * @see WP_Http::request() For default options descriptions.24	 *25	 * @since 2.7.026	 * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().27	 *28	 * @param string       $url  The request URL.29	 * @param string|array $args Optional. Override the defaults.30	 * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error31	 */32	public function request( $url, $args = array() ) {33		$defaults = array(34			'method'      => 'GET',35			'timeout'     => 5,36			'redirection' => 5,37			'httpversion' => '1.0',38			'blocking'    => true,39			'headers'     => array(),40			'body'        => null,41			'cookies'     => array(),42			'decompress'  => false,43			'stream'      => false,44			'filename'    => null,45		);46 47		$parsed_args = wp_parse_args( $args, $defaults );48 49		if ( isset( $parsed_args['headers']['User-Agent'] ) ) {50			$parsed_args['user-agent'] = $parsed_args['headers']['User-Agent'];51			unset( $parsed_args['headers']['User-Agent'] );52		} elseif ( isset( $parsed_args['headers']['user-agent'] ) ) {53			$parsed_args['user-agent'] = $parsed_args['headers']['user-agent'];54			unset( $parsed_args['headers']['user-agent'] );55		}56 57		// Construct Cookie: header if any cookies are set.58		WP_Http::buildCookieHeader( $parsed_args );59 60		$parsed_url = parse_url( $url );61 62		$connect_host = $parsed_url['host'];63 64		$secure_transport = ( 'ssl' === $parsed_url['scheme'] || 'https' === $parsed_url['scheme'] );65		if ( ! isset( $parsed_url['port'] ) ) {66			if ( 'ssl' === $parsed_url['scheme'] || 'https' === $parsed_url['scheme'] ) {67				$parsed_url['port'] = 443;68				$secure_transport   = true;69			} else {70				$parsed_url['port'] = 80;71			}72		}73 74		// Always pass a path, defaulting to the root in cases such as http://example.com.75		if ( ! isset( $parsed_url['path'] ) ) {76			$parsed_url['path'] = '/';77		}78 79		if ( isset( $parsed_args['headers']['Host'] ) || isset( $parsed_args['headers']['host'] ) ) {80			if ( isset( $parsed_args['headers']['Host'] ) ) {81				$parsed_url['host'] = $parsed_args['headers']['Host'];82			} else {83				$parsed_url['host'] = $parsed_args['headers']['host'];84			}85			unset( $parsed_args['headers']['Host'], $parsed_args['headers']['host'] );86		}87 88		/*89		 * Certain versions of PHP have issues with 'localhost' and IPv6, It attempts to connect90		 * to ::1, which fails when the server is not set up for it. For compatibility, always91		 * connect to the IPv4 address.92		 */93		if ( 'localhost' === strtolower( $connect_host ) ) {94			$connect_host = '127.0.0.1';95		}96 97		$connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host;