ing'] ) {
			stream_set_blocking( $handle, 0 );
			fclose( $handle );
			return array(
				'headers'  => array(),
				'body'     => '',
				'response' => array(
					'code'    => false,
					'message' => false,
				),
				'cookies'  => array(),
			);
		}

		$response     = '';
		$body_started = false;
		$keep_reading = true;
		$block_size   = 4096;

		if ( isset( $parsed_args['limit_response_size'] ) ) {
			$block_size = min( $block_size, $parsed_args['limit_response_size'] );
		}

		// If streaming to a file setup the file handle.
		if ( $parsed_args['stream'] ) {
			if ( ! WP_DEBUG ) {
				$stream_handle = @fopen( $parsed_args['filename'], 'w+' );
			} else {
				$stream_handle = fopen( $parsed_args['filename'], 'w+' );
			}

			if ( ! $stream_handle ) {
				return new WP_Error(
					'http_request_failed',
					sprintf(
						/* translators: 1: fopen(), 2: File name. */
						__( 'Could not open handle for %1$s to %2$s.' ),
						'fopen()',
						$parsed_args['filename']
					)
				);
			}

			$bytes_written = 0;

			while ( ! feof( $handle ) && $keep_reading ) {
				$block = fread( $handle, $block_size );
				if ( ! $body_started ) {
					$response .= $block;
					if ( strpos( $response, "\r\n\r\n" ) ) {
						$processed_response = WP_Http::processResponse( $response );
						$body_started       = true;
						$block              = $processed_response['body'];
						unset( $response );
						$processed_response['body'] = '';
					}
				}

				$this_block_size = strlen( $block );

				if ( isset( $parsed_args['limit_response_size'] )
					&& ( $bytes_written + $this_block_size ) > $parsed_args['limit_response_size']
				) {
					$this_block_size = ( $parsed_args['limit_response_size'] - $bytes_written );
					$block           = substr( $block, 0, $this_block_size );
				}

				$bytes_written_to_file = fwrite( $stream_handle, $block );

				if ( $bytes_written_to_file != $this_block_size ) {
					fclose( $handle );
					fclose( $stream_handle );
					return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
				}

				$bytes_written += $bytes_written_to_file;

				$keep_reading = (
					! isset( $parsed_args['limit_response_size'] )
					|| $bytes_written < $parsed_args['limit_response_size']
				);
			}

			fclose( $stream_handle );

		} else {
			$header_length = 0;

			while ( ! feof( $handle ) && $keep_reading ) {
				$block     = fread( $handle, $block_size );
				$response .= $block;

				if ( ! $body_started && strpos( $response, "\r\n\r\n" ) ) {
					$header_length = strpos( $response, "\r\n\r\n" ) + 4;
					$body_started  = true;
				}

				$keep_reading = (
					! $body_started
					|| ! isset( $parsed_args['limit_response_size'] )
					|| strlen( $response ) < ( $header_length + $parsed_args['limit_response_size'] )
				);
			}

			$processed_response = WP_Http::processResponse( $response );
			unset( $response );

		}

		fclose( $handle );

		$processed_headers = WP_Http::processHeaders( $processed_response['headers'], $url );

		$response = array(
			'headers'  => $processed_headers['headers'],
			// Not yet processed.
			'body'     => null,
			'response' => $processed_headers['response'],
			'cookies'  => $processed_headers['cookies'],
			'filename' => $parsed_args['filename'],
		);

		// Handle redirects.
		$redirect_response = WP_Http::handle_redirects( $url, $parsed_args, $response );
		if ( false !== $redirect_response ) {
			return $redirect_response;
		}

		// If the body was chunk encoded, then decode it.
		if ( ! empty( $processed_response['body'] )
			&& isset( $processed_headers['headers']['transfer-encoding'] )
			&& 'chunked' === $processed_headers['headers']['transfer-encoding']
		) {
			$processed_response['body'] = WP_Http::chunkTransferDecode( $processed_response['body'] );
		}

		if ( true === $parsed_args['decompress']
			&& true === WP_Http_Encoding::should_decode( $processed_headers['headers'] )
		) {
			$processed_response['body'] = WP_Http_Encoding::decompress( $processed_response['body'] );
		}

		if ( isset( $parsed_args['limit_response_size'] )
			&& strlen( $processed_response['body'] ) > $parsed_args['limit_response_size']
		) {
			$processed_response['body'] = substr( $processed_response['body'], 0, $parsed_args['limit_response_size'] );
		}

		$response['body'] = $processed_response['body'];

		return $response;
	}

	/**
	 * Verifies the received SSL certificate against its Common Names and subjectAltName fields.
	 *
	 * PHP's SSL verifications only verify that it's a valid Certificate, it doesn't verify if
	 * the certificate is valid for the hostname which was requested.
	 * This function verifies the requested hostname against certificate's subjectAltName field,
	 * if that is empty, or contains no DNS entries, a fallback to the Common Name field is used.
	 *
	 * IP Address support is included if the request is being made to an IP address.
	 *
	 * @since 3.7.0
	 *
	 * @param resource $stream The PHP Stream which the SSL request is being made over
	 * @param string   $host   The hostname being requested
	 * @return bool If the certificate presented in $stream is valid for $host
	 */
	public static function verify_ssl_certificate( $stream, $host ) {
		$context_options = stream_context_get_options( $stream );

		if ( empty( $context_options['ssl']['peer_certificate'] ) ) {
			return false;
		}

		$cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] );
		if ( ! $cert ) {
			return false;
		}

		/*
		 * If the request is being made to an IP address, we'll validate against IP fields
		 * in the cert (if they exist)
		 */
		$host_type = ( WP_Http::is_ip_address( $host ) ? 'ip' : 'dns' );

		$certificate_hostnames = array();
		if ( ! empty( $cert['extensions']['subjectAltName'] ) ) {
			$match_against = preg_split( '/,\s*/', $cert['extensions']['subjectAltName'] );
			foreach ( $match_against as $match ) {
				list( $match_type, $match_host ) = explode( ':', $match );
				if ( strtolower( trim( $match_type ) ) === $host_type ) { // IP: or DNS:
					$certificate_hostnames[] = strtolower( trim( $match_host ) );
				}
			}
		} elseif ( ! empty( $cert['subject']['CN'] ) ) {
			// Only use the CN when the certificate includes no subjectAltName extension.
			$certificate_hostnames[] = strtolower( $cert['subject']['CN'] );
		}

		// Exact hostname/IP matches.
		if ( in_array( strtolower( $host ), $certificate_hostnames, true ) ) {
			return true;
		}

		// IP's can't be wildcards, Stop processing.
		if ( 'ip' === $host_type ) {
			return false;
		}

		// Test to see if the domain is at least 2 deep for wildcard support.
		if ( substr_count( $host, '.' ) < 2 ) {
			return false;
		}

		// Wildcard subdomains certs (*.example.com) are valid for a.example.com but not a.b.example.com.
		$wildcard_host = preg_replace( '/^[^.]+\./', '*.', $host );

		return in_array( strtolower( $wildcard_host ), $certificate_hostnames, true );
	}

	/**
	 * Determines whether this class can be used for retrieving a URL.
	 *
	 * @since 2.7.0
	 * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
	 *
	 * @param array $args Optional. Array of request arguments. Default empty array.
	 * @return bool False means this class can not be used, true means it can.
	 */
	public static function test( $args = array() ) {
		if