How can my wp-includes/class-http.php be fixed?

I have complained about this issue before. My wp-includes/class-http.php in my nigelweb.us site keeps giving me issues.

Every two days or so I have to upload a new one to the site because of issues I do not know.

I upgraded to the latest Wordpress install two days age and one day after that I realize I am still having the same issue. I do not have an answer for this but it is frustrating my clients.

When this happen, my whole multisite is down. Please Please Please take a look at it for me.

I extended support access to the site. Jack has all the information for my site access.

  • Vaughan

    Hi @nigel,

    That'sstrange that this keeps re-occuring. I've searched lots on google but nothing seems to come to light.

    The one thing that does stick out though is in your PHP config.

    Zend Guard Loader, SourceGuardian & ionCube Loader (Any chance you could ask your host if you could disable those on your domain to test with?

    As those do encode & work with PHP and the HTTP protocols, so something could be incompatible with those.

    Another potential issue I saw, but most likely not related to this at all.

    memory_limit 256M
    post_max_size 512M

    Your post_max_size should never be more than the memory_limit.

    Hope this helps

  • Nigel

    This is the response from my host:
    Hello Nigel,

    I have checked that ioncube, sourceguardian and zendguard is already disable for your account and you can verify it at URL:

    http://nigelweb.us/info.php

    Please let us know if you have any additional questions or need further assistance.

    Shakir Ali
    Technical Support Representative

    Today I have to upload the class-http.php again because my sites stop working. I attached the affected file for you to analyze, please let me know your findings.

  • Nigel

    <?php
    /**
    * Simple and uniform HTTP request API.
    *
    * Standardizes the HTTP requests for WordPress. Handles cookies, gzip encoding and decoding, chunk
    * decoding, if HTTP 1.1 and various other difficult HTTP protocol implementations.
    *
    * @link http://trac.wordpress.org/ticket/4779 HTTP API Proposal
    *
    * @package WordPress
    * @subpackage HTTP
    * @since 2.7.0
    */

    /**
    * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
    *
    * This class is used to consistently make outgoing HTTP requests easy for developers
    * while still being compatible with the many PHP configurations under which
    * WordPress runs.
    *
    * Debugging includes several actions, which pass different variables for debugging the HTTP API.
    *
    * @package WordPress
    * @subpackage HTTP
    * @since 2.7.0
    */
    class WP_Http {

    /**
    * Send an HTTP request to a URI.
    *
    * Please note: The only URI that are supported in the HTTP Transport implementation
    * are the HTTP and HTTPS protocols.
    *
    * @access public
    * @since 2.7.0
    *
    * @param string $url The request URL.
    * @param string|array $args {
    * Optional. Array or string of HTTP request arguments.
    *
    * @type string $method Request method. Accepts 'GET', 'POST', 'HEAD', or 'PUT'.
    * Some transports technically allow others, but should not be
    * assumed. Default 'GET'.
    * @type int $timeout How long the connection should stay open in seconds. Default 5.
    * @type int $redirection Number of allowed redirects. Not supported by all transports
    * Default 5.
    * @type string $httpversion Version of the HTTP protocol to use. Accepts '1.0' and '1.1'.
    * Default '1.0'.
    * @type string $user-agent User-agent value sent.
    * Default WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ).
    * @type bool $reject_unsafe_urls Whether to pass URLs through {@see wp_http_validate_url()}.
    * Default false.
    * @type bool $blocking Whether the calling code requires the result of the request.
    * If set to false, the request will be sent to the remote server,
    * and processing returned to the calling code immediately, the caller
    * will know if the request succeeded or failed, but will not receive
    * any response from the remote server. Default true.
    * @type string|array $headers Array or string of headers to send with the request.
    * Default empty array.
    * @type array $cookies List of cookies to send with the request. Default empty array.
    * @type string|array $body Body to send with the request. Default null.
    * @type bool $compress Whether to compress the $body when sending the request.
    * Default false.
    * @type bool $decompress Whether to decompress a compressed response. If set to false and
    * compressed content is returned in the response anyway, it will
    * need to be separately decompressed. Default true.
    * @type bool $sslverify Whether to verify SSL for the request. Default true.
    * @type string sslcertificates Absolute path to an SSL certificate .crt file.
    * Default ABSPATH . WPINC . '/certificates/ca-bundle.crt'.
    * @type bool $stream Whether to stream to a file. If set to true and no filename was
    * given, it will be droped it in the WP temp dir and its name will
    * be set using the basename of the URL. Default false.
    * @type string $filename Filename of the file to write to when streaming. $stream must be
    * set to true. Default null.
    * @type int $limit_response_size Size in bytes to limit the response to. Default null.
    *
    * }
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
    * A WP_Error instance upon error.
    */
    public function request( $url, $args = array() ) {
    global $wp_version;

    $defaults = array(
    'method' => 'GET',
    /**
    * Filter the timeout value for an HTTP request.
    *
    * @since 2.7.0
    *
    * @param int $timeout_value Time in seconds until a request times out.
    * Default 5.
    */
    'timeout' => apply_filters( 'http_request_timeout', 5 ),
    /**
    * Filter the number of redirects allowed during an HTTP request.
    *
    * @since 2.7.0
    *
    * @param int $redirect_count Number of redirects allowed. Default 5.
    */
    'redirection' => apply_filters( 'http_request_redirection_count', 5 ),
    /**
    * Filter the version of the HTTP protocol used in a request.
    *
    * @since 2.7.0
    *
    * @param string $version Version of HTTP used. Accepts '1.0' and '1.1'.
    * Default '1.0'.
    */
    'httpversion' => apply_filters( 'http_request_version', '1.0' ),
    /**
    * Filter the user agent value sent with an HTTP request.
    *
    * @since 2.7.0
    *
    * @param string $user_agent WordPress user agent string.
    */
    'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ),
    /**
    * Filter whether to pass URLs through wp_http_validate_url() in an HTTP request.
    *
    * @since 3.6.0
    *
    * @param bool $pass_url Whether to pass URLs through wp_http_validate_url().
    * Default false.
    */
    'reject_unsafe_urls' => apply_filters( 'http_request_reject_unsafe_urls', false ),
    'blocking' => true,
    'headers' => array(),
    'cookies' => array(),
    'body' => null,
    'compress' => false,
    'decompress' => true,
    'sslverify' => true,
    'sslcertificates' => ABSPATH . WPINC . '/certificates/ca-bundle.crt',
    'stream' => false,
    'filename' => null,
    'limit_response_size' => null,
    );

    // Pre-parse for the HEAD checks.
    $args = wp_parse_args( $args );

    // By default, Head requests do not cause redirections.
    if ( isset($args['method']) && 'HEAD' == $args['method'] )
    $defaults['redirection'] = 0;

    $r = wp_parse_args( $args, $defaults );
    /**
    * Filter the arguments used in an HTTP request.
    *
    * @since 2.7.0
    *
    * @param array $r An array of HTTP request arguments.
    * @param string $url The request URL.
    */
    $r = apply_filters( 'http_request_args', $r, $url );

    // The transports decrement this, store a copy of the original value for loop purposes.
    if ( ! isset( $r['_redirection'] ) )
    $r['_redirection'] = $r['redirection'];

    /**
    * Filter whether to preempt an HTTP request's return.
    *
    * Returning a truthy value to the filter will short-circuit
    * the HTTP request and return early with that value.
    *
    * @since 2.9.0
    *
    * @param bool $preempt Whether to preempt an HTTP request return. Default false.
    * @param array $r HTTP request arguments.
    * @param string $url The request URL.
    */
    $pre = apply_filters( 'pre_http_request', false, $r, $url );
    if ( false !== $pre )
    return $pre;

    if ( function_exists( 'wp_kses_bad_protocol' ) ) {
    if ( $r['reject_unsafe_urls'] )
    $url = wp_http_validate_url( $url );
    $url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) );
    }

    $arrURL = @parse_url( $url );

    if ( empty( $url ) || empty( $arrURL['scheme'] ) )
    return new WP_Error('http_request_failed', __('A valid URL was not provided.'));

    if ( $this->block_request( $url ) )
    return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) );

    /*
    * Determine if this is a https call and pass that on to the transport functions
    * so that we can blacklist the transports that do not support ssl verification
    */
    $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';

    // Determine if this request is to OUR install of WordPress.
    $homeURL = parse_url( get_bloginfo( 'url' ) );
    $r['local'] = 'localhost' == $arrURL['host'] || ( isset( $homeURL['host'] ) && $homeURL['host'] == $arrURL['host'] );
    unset( $homeURL );

    /*
    * If we are streaming to a file but no filename was given drop it in the WP temp dir
    * and pick its name using the basename of the $url.
    */
    if ( $r['stream'] && empty( $r['filename'] ) )
    $r['filename'] = get_temp_dir() . basename( $url );

    /*
    * Force some settings if we are streaming to a file and check for existence and perms
    * of destination directory.
    */
    if ( $r['stream'] ) {
    $r['blocking'] = true;
    if ( ! wp_is_writable( dirname( $r['filename'] ) ) )
    return new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );
    }

    if ( is_null( $r['headers'] ) )
    $r['headers'] = array();

    if ( ! is_array( $r['headers'] ) ) {
    $processedHeaders = WP_Http::processHeaders( $r['headers'], $url );
    $r['headers'] = $processedHeaders['headers'];
    }

    if ( isset( $r['headers']['User-Agent'] ) ) {
    $r['user-agent'] = $r['headers']['User-Agent'];
    unset( $r['headers']['User-Agent'] );
    }

    if ( isset( $r['headers']['user-agent'] ) ) {
    $r['user-agent'] = $r['headers']['user-agent'];
    unset( $r['headers']['user-agent'] );
    }

    if ( '1.1' == $r['httpversion'] && !isset( $r['headers']['connection'] ) ) {
    $r['headers']['connection'] = 'close';
    }

    // Construct Cookie: header if any cookies are set.
    WP_Http::buildCookieHeader( $r );

    // Avoid issues where mbstring.func_overload is enabled.
    mbstring_binary_safe_encoding();

    if ( ! isset( $r['headers']['Accept-Encoding'] ) ) {
    if ( $encoding = WP_Http_Encoding::accept_encoding( $url, $r ) )
    $r['headers']['Accept-Encoding'] = $encoding;
    }

    if ( ( ! is_null( $r['body'] ) && '' != $r['body'] ) || 'POST' == $r['method'] || 'PUT' == $r['method'] ) {
    if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {
    $r['body'] = http_build_query( $r['body'], null, '&' );

    if ( ! isset( $r['headers']['Content-Type'] ) )
    $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' );
    }

    if ( '' === $r['body'] )
    $r['body'] = null;

    if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )
    $r['headers']['Content-Length'] = strlen( $r['body'] );
    }

    $response = $this->_dispatch_request( $url, $r );

    reset_mbstring_encoding();

    if ( is_wp_error( $response ) )
    return $response;

    // Append cookies that were used in this request to the response
    if ( ! empty( $r['cookies'] ) ) {
    $cookies_set = wp_list_pluck( $response['cookies'], 'name' );
    foreach ( $r['cookies'] as $cookie ) {
    if ( ! in_array( $cookie->name, $cookies_set ) && $cookie->test( $url ) ) {
    $response['cookies'][] = $cookie;
    }
    }
    }

    return $response;
    }

    /**
    * Tests which transports are capable of supporting the request.
    *
    * @since 3.2.0
    * @access private
    *
    * @param array $args Request arguments
    * @param string $url URL to Request
    *
    * @return string|bool Class name for the first transport that claims to support the request. False if no transport claims to support the request.
    */
    public function _get_first_available_transport( $args, $url = null ) {
    /**
    * Filter which HTTP transports are available and in what order.
    *
    * @since 3.7.0
    *
    * @param array $value Array of HTTP transports to check. Default array contains
    * 'curl', and 'streams', in that order.
    * @param array $args HTTP request arguments.
    * @param string $url The URL to request.
    */
    $request_order = apply_filters( 'http_api_transports', array( 'curl', 'streams' ), $args, $url );

    // Loop over each transport on each HTTP request looking for one which will serve this request's needs.
    foreach ( $request_order as $transport ) {
    $class = 'WP_HTTP_' . $transport;

    // Check to see if this transport is a possibility, calls the transport statically.
    if ( !call_user_func( array( $class, 'test' ), $args, $url ) )
    continue;

    return $class;
    }

    return false;
    }

    /**
    * Dispatches a HTTP request to a supporting transport.
    *
    * Tests each transport in order to find a transport which matches the request arguments.
    * Also caches the transport instance to be used later.
    *
    * The order for requests is cURL, and then PHP Streams.
    *
    * @since 3.2.0
    * @access private
    *
    * @param string $url URL to Request
    * @param array $args Request arguments
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    private function _dispatch_request( $url, $args ) {
    static $transports = array();

    $class = $this->_get_first_available_transport( $args, $url );
    if ( !$class )
    return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) );

    // Transport claims to support request, instantiate it and give it a whirl.
    if ( empty( $transports[$class] ) )
    $transports[$class] = new $class;

    $response = $transports[$class]->request( $url, $args );

    /**
    * Fires after an HTTP API response is received and before the response is returned.
    *
    * @since 2.8.0
    *
    * @param array|WP_Error $response HTTP response or WP_Error object.
    * @param string $context Context under which the hook is fired.
    * @param string $class HTTP transport used.
    * @param array $args HTTP request arguments.
    * @param string $url The request URL.
    */
    do_action( 'http_api_debug', $response, 'response', $class, $args, $url );

    if ( is_wp_error( $response ) )
    return $response;

    /**
    * Filter the HTTP API response immediately before the response is returned.
    *
    * @since 2.9.0
    *
    * @param array $response HTTP response.
    * @param array $args HTTP request arguments.
    * @param string $url The request URL.
    */
    return apply_filters( 'http_response', $response, $args, $url );
    }

    /**
    * Uses the POST HTTP method.
    *
    * Used for sending data that is expected to be in the body.
    *
    * @access public
    * @since 2.7.0
    *
    * @param string $url The request URL.
    * @param string|array $args Optional. Override the defaults.
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    public function post($url, $args = array()) {
    $defaults = array('method' => 'POST');
    $r = wp_parse_args( $args, $defaults );
    return $this->request($url, $r);
    }

    /**
    * Uses the GET HTTP method.
    *
    * Used for sending data that is expected to be in the body.
    *
    * @access public
    * @since 2.7.0
    *
    * @param string $url The request URL.
    * @param string|array $args Optional. Override the defaults.
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    public function get($url, $args = array()) {
    $defaults = array('method' => 'GET');
    $r = wp_parse_args( $args, $defaults );
    return $this->request($url, $r);
    }

    /**
    * Uses the HEAD HTTP method.
    *
    * Used for sending data that is expected to be in the body.
    *
    * @access public
    * @since 2.7.0
    *
    * @param string $url The request URL.
    * @param string|array $args Optional. Override the defaults.
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    public function head($url, $args = array()) {
    $defaults = array('method' => 'HEAD');
    $r = wp_parse_args( $args, $defaults );
    return $this->request($url, $r);
    }

    /**
    * Parses the responses and splits the parts into headers and body.
    *
    * @access public
    * @static
    * @since 2.7.0
    *
    * @param string $strResponse The full response string
    * @return array Array with 'headers' and 'body' keys.
    */
    public static function processResponse($strResponse) {
    $res = explode("\r\n\r\n", $strResponse, 2);

    return array('headers' => $res[0], 'body' => isset($res[1]) ? $res[1] : '');
    }

    /**
    * Transform header string into an array.
    *
    * If an array is given then it is assumed to be raw header data with numeric keys with the
    * headers as the values. No headers must be passed that were already processed.
    *
    * @access public
    * @static
    * @since 2.7.0
    *
    * @param string|array $headers
    * @param string $url The URL that was requested
    * @return array Processed string headers. If duplicate headers are encountered,
    * Then a numbered array is returned as the value of that header-key.
    */
    public static function processHeaders( $headers, $url = '' ) {
    // Split headers, one per array element.
    if ( is_string($headers) ) {
    // Tolerate line terminator: CRLF = LF (RFC 2616 19.3).
    $headers = str_replace("\r\n", "\n", $headers);
    /*
    * Unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) <US-ASCII SP, space (32)>,
    * <US-ASCII HT, horizontal-tab (9)> (RFC 2616 2.2).
    */
    $headers = preg_replace('/\n[ \t]/', ' ', $headers);
    // Create the headers array.
    $headers = explode("\n", $headers);
    }

    $response = array('code' => 0, 'message' => '');

    /*
    * If a redirection has taken place, The headers for each page request may have been passed.
    * In this case, determine the final HTTP header and parse from there.
    */
    for ( $i = count($headers)-1; $i >= 0; $i-- ) {
    if ( !empty($headers[$i]) && false === strpos($headers[$i], ':') ) {
    $headers = array_splice($headers, $i);
    break;
    }
    }

    $cookies = array();
    $newheaders = array();
    foreach ( (array) $headers as $tempheader ) {
    if ( empty($tempheader) )
    continue;

    if ( false === strpos($tempheader, ':') ) {
    $stack = explode(' ', $tempheader, 3);
    $stack[] = '';
    list( , $response['code'], $response['message']) = $stack;
    continue;
    }

    list($key, $value) = explode(':', $tempheader, 2);

    $key = strtolower( $key );
    $value = trim( $value );

    if ( isset( $newheaders[ $key ] ) ) {
    if ( ! is_array( $newheaders[ $key ] ) )
    $newheaders[$key] = array( $newheaders[ $key ] );
    $newheaders[ $key ][] = $value;
    } else {
    $newheaders[ $key ] = $value;
    }
    if ( 'set-cookie' == $key )
    $cookies[] = new WP_Http_Cookie( $value, $url );
    }

    return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);
    }

    /**
    * Takes the arguments for a ::request() and checks for the cookie array.
    *
    * If it's found, then it upgrades any basic name => value pairs to WP_Http_Cookie instances,
    * which are each parsed into strings and added to the Cookie: header (within the arguments array).
    * Edits the array by reference.
    *
    * @access public
    * @version 2.8.0
    * @static
    *
    * @param array $r Full array of args passed into ::request()
    */
    public static function buildCookieHeader( &$r ) {
    if ( ! empty($r['cookies']) ) {
    // Upgrade any name => value cookie pairs to WP_HTTP_Cookie instances.
    foreach ( $r['cookies'] as $name => $value ) {
    if ( ! is_object( $value ) )
    $r['cookies'][ $name ] = new WP_HTTP_Cookie( array( 'name' => $name, 'value' => $value ) );
    }

    $cookies_header = '';
    foreach ( (array) $r['cookies'] as $cookie ) {
    $cookies_header .= $cookie->getHeaderValue() . '; ';
    }

    $cookies_header = substr( $cookies_header, 0, -2 );
    $r['headers']['cookie'] = $cookies_header;
    }
    }

    /**
    * Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.
    *
    * Based off the HTTP http_encoding_dechunk function.
    *
    * @link http://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding.
    *
    * @access public
    * @since 2.7.0
    * @static
    *
    * @param string $body Body content
    * @return string Chunked decoded body on success or raw body on failure.
    */
    public static function chunkTransferDecode( $body ) {
    // The body is not chunked encoded or is malformed.
    if ( ! preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', trim( $body ) ) )
    return $body;

    $parsed_body = '';

    // We'll be altering $body, so need a backup in case of error.
    $body_original = $body;

    while ( true ) {
    $has_chunk = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $body, $match );
    if ( ! $has_chunk || empty( $match[1] ) )
    return $body_original;

    $length = hexdec( $match[1] );
    $chunk_length = strlen( $match[0] );

    // Parse out the chunk of data.
    $parsed_body .= substr( $body, $chunk_length, $length );

    // Remove the chunk from the raw data.
    $body = substr( $body, $length + $chunk_length );

    // End of the document.
    if ( '0' === trim( $body ) )
    return $parsed_body;
    }
    }

    /**
    * Block requests through the proxy.
    *
    * Those who are behind a proxy and want to prevent access to certain hosts may do so. This will
    * prevent plugins from working and core functionality, if you don't include api.wordpress.org.
    *
    * You block external URL requests by defining WP_HTTP_BLOCK_EXTERNAL as true in your wp-config.php
    * file and this will only allow localhost and your blog to make requests. The constant
    * WP_ACCESSIBLE_HOSTS will allow additional hosts to go through for requests. The format of the
    * WP_ACCESSIBLE_HOSTS constant is a comma separated list of hostnames to allow, wildcard domains
    * are supported, eg *.wordpress.org will allow for all subdomains of wordpress.org to be contacted.
    *
    * @since 2.8.0
    * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
    * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS
    *
    * @param string $uri URI of url.
    * @return bool True to block, false to allow.
    */
    public function block_request($uri) {
    // We don't need to block requests, because nothing is blocked.
    if ( ! defined( 'WP_HTTP_BLOCK_EXTERNAL' ) || ! WP_HTTP_BLOCK_EXTERNAL )
    return false;

    $check = parse_url($uri);
    if ( ! $check )
    return true;

    $home = parse_url( get_option('siteurl') );

    // Don't block requests back to ourselves by default.
    if ( 'localhost' == $check['host'] || ( isset( $home['host'] ) && $home['host'] == $check['host'] ) ) {
    /**
    * Filter whether to block local requests through the proxy.
    *
    * @since 2.8.0
    *
    * @param bool $block Whether to block local requests through proxy.
    * Default false.
    */
    return apply_filters( 'block_local_requests', false );
    }

    if ( !defined('WP_ACCESSIBLE_HOSTS') )
    return true;

    static $accessible_hosts;
    static $wildcard_regex = false;
    if ( null == $accessible_hosts ) {
    $accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS);

    if ( false !== strpos(WP_ACCESSIBLE_HOSTS, '*') ) {
    $wildcard_regex = array();
    foreach ( $accessible_hosts as $host )
    $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) );
    $wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i';
    }
    }

    if ( !empty($wildcard_regex) )
    return !preg_match($wildcard_regex, $check['host']);
    else
    return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If it's in the array, then we can't access it.

    }

    public static function make_absolute_url( $maybe_relative_path, $url ) {
    if ( empty( $url ) )
    return $maybe_relative_path;

    // Check for a scheme.
    if ( false !== strpos( $maybe_relative_path, '://' ) )
    return $maybe_relative_path;

    if ( ! $url_parts = @parse_url( $url ) )
    return $maybe_relative_path;

    if ( ! $relative_url_parts = @parse_url( $maybe_relative_path ) )
    return $maybe_relative_path;

    $absolute_path = $url_parts['scheme'] . '://' . $url_parts['host'];
    if ( isset( $url_parts['port'] ) )
    $absolute_path .= ':' . $url_parts['port'];

    // Start off with the Absolute URL path.
    $path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/';

    // If it's a root-relative path, then great.
    if ( ! empty( $relative_url_parts['path'] ) && '/' == $relative_url_parts['path'][0] ) {
    $path = $relative_url_parts['path'];

    // Else it's a relative path.
    } elseif ( ! empty( $relative_url_parts['path'] ) ) {
    // Strip off any file components from the absolute path.
    $path = substr( $path, 0, strrpos( $path, '/' ) + 1 );

    // Build the new path.
    $path .= $relative_url_parts['path'];

    // Strip all /path/../ out of the path.
    while ( strpos( $path, '../' ) > 1 ) {
    $path = preg_replace( '![^/]+/\.\./!', '', $path );
    }

    // Strip any final leading ../ from the path.
    $path = preg_replace( '!^/(\.\./)+!', '', $path );
    }

    // Add the Query string.
    if ( ! empty( $relative_url_parts['query'] ) )
    $path .= '?' . $relative_url_parts['query'];

    return $absolute_path . '/' . ltrim( $path, '/' );
    }

    /**
    * Handles HTTP Redirects and follows them if appropriate.
    *
    * @since 3.7.0
    *
    * @param string $url The URL which was requested.
    * @param array $args The Arguments which were used to make the request.
    * @param array $response The Response of the HTTP request.
    * @return false|object False if no redirect is present, a WP_HTTP or WP_Error result otherwise.
    */
    public static function handle_redirects( $url, $args, $response ) {
    // If no redirects are present, or, redirects were not requested, perform no action.
    if ( ! isset( $response['headers']['location'] ) || 0 === $args['_redirection'] )
    return false;

    // Only perform redirections on redirection http codes.
    if ( $response['response']['code'] > 399 || $response['response']['code'] < 300 )
    return false;

    // Don't redirect if we've run out of redirects.
    if ( $args['redirection']-- <= 0 )
    return new WP_Error( 'http_request_failed', __('Too many redirects.') );

    $redirect_location = $response['headers']['location'];

    // If there were multiple Location headers, use the last header specified.
    if ( is_array( $redirect_location ) )
    $redirect_location = array_pop( $redirect_location );

    $redirect_location = WP_HTTP::make_absolute_url( $redirect_location, $url );

    // POST requests should not POST to a redirected location.
    if ( 'POST' == $args['method'] ) {
    if ( in_array( $response['response']['code'], array( 302, 303 ) ) )
    $args['method'] = 'GET';
    }

    // Include valid cookies in the redirect process.
    if ( ! empty( $response['cookies'] ) ) {
    foreach ( $response['cookies'] as $cookie ) {
    if ( $cookie->test( $redirect_location ) )
    $args['cookies'][] = $cookie;
    }
    }

    return wp_remote_request( $redirect_location, $args );
    }

    /**
    * Determines if a specified string represents an IP address or not.
    *
    * This function also detects the type of the IP address, returning either
    * '4' or '6' to represent a IPv4 and IPv6 address respectively.
    * This does not verify if the IP is a valid IP, only that it appears to be
    * an IP address.
    *
    * @see http://home.deds.nl/~aeron/regex/ for IPv6 regex
    *
    * @since 3.7.0
    * @static
    *
    * @param string $maybe_ip A suspected IP address
    * @return integer|bool Upon success, '4' or '6' to represent a IPv4 or IPv6 address, false upon failure
    */
    public static function is_ip_address( $maybe_ip ) {
    if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $maybe_ip ) )
    return 4;

    if ( false !== strpos( $maybe_ip, ':' ) && preg_match( '/^(((?=.*(::grinning:slight_frown:?!.*\3.+\3))\3?|([\dA-F]{1,4}(\3|:\b|$)|\2))(?4){5}((?4){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i', trim( $maybe_ip, ' []' ) ) )
    return 6;

    return false;
    }

    }

    /**
    * HTTP request method uses PHP Streams to retrieve the url.
    *
    * @since 2.7.0
    * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
    */
    class WP_Http_Streams {
    /**
    * Send a HTTP request to a URI using PHP Streams.
    *
    * @see WP_Http::request For default options descriptions.
    *
    * @since 2.7.0
    * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
    *
    * @access public
    * @param string $url The request URL.
    * @param string|array $args Optional. Override the defaults.
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    public function request($url, $args = array()) {
    $defaults = array(
    'method' => 'GET', 'timeout' => 5,
    'redirection' => 5, 'httpversion' => '1.0',
    'blocking' => true,
    'headers' => array(), 'body' => null, 'cookies' => array()
    );

    $r = wp_parse_args( $args, $defaults );

    if ( isset($r['headers']['User-Agent']) ) {
    $r['user-agent'] = $r['headers']['User-Agent'];
    unset($r['headers']['User-Agent']);
    } else if ( isset($r['headers']['user-agent']) ) {
    $r['user-agent'] = $r['headers']['user-agent'];
    unset($r['headers']['user-agent']);
    }

    // Construct Cookie: header if any cookies are set.
    WP_Http::buildCookieHeader( $r );

    $arrURL = parse_url($url);

    $connect_host = $arrURL['host'];

    $secure_transport = ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' );
    if ( ! isset( $arrURL['port'] ) ) {
    if ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) {
    $arrURL['port'] = 443;
    $secure_transport = true;
    } else {
    $arrURL['port'] = 80;
    }
    }

    if ( isset( $r['headers']['Host'] ) || isset( $r['headers']['host'] ) ) {
    if ( isset( $r['headers']['Host'] ) )
    $arrURL['host'] = $r['headers']['Host'];
    else
    $arrURL['host'] = $r['headers']['host'];
    unset( $r['headers']['Host'], $r['headers']['host'] );
    }

    /*
    * Certain versions of PHP have issues with 'localhost' and IPv6, It attempts to connect
    * to ::1, which fails when the server is not set up for it. For compatibility, always
    * connect to the IPv4 address.
    */
    if ( 'localhost' == strtolower( $connect_host ) )
    $connect_host = '127.0.0.1';

    $connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host;

    $is_local = isset( $r['local'] ) && $r['local'];
    $ssl_verify = isset( $r['sslverify'] ) && $r['sslverify'];
    if ( $is_local ) {
    /**
    * Filter whether SSL should be verified for local requests.
    *
    * @since 2.8.0
    *
    * @param bool $ssl_verify Whether to verify the SSL connection. Default true.
    */
    $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify );
    } elseif ( ! $is_local ) {
    /**
    * Filter whether SSL should be verified for non-local requests.
    *
    * @since 2.8.0
    *
    * @param bool $ssl_verify Whether to verify the SSL connection. Default true.
    */
    $ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify );
    }

    $proxy = new WP_HTTP_Proxy();

    $context = stream_context_create( array(
    'ssl' => array(
    'verify_peer' => $ssl_verify,
    //'CN_match' => $arrURL['host'], // This is handled by self::verify_ssl_certificate()
    'capture_peer_cert' => $ssl_verify,
    'SNI_enabled' => true,
    'cafile' => $r['sslcertificates'],
    'allow_self_signed' => ! $ssl_verify,
    )
    ) );

    $timeout = (int) floor( $r['timeout'] );
    $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
    $connect_timeout = max( $timeout, 1 );

    // Store error number.
    $connection_error = null;

    // Store error string.
    $connection_error_str = null;

    if ( !WP_DEBUG ) {
    // In the event that the SSL connection fails, silence the many PHP Warnings.
    if ( $secure_transport )
    $error_reporting = error_reporting(0);

    if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
    $handle = @stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
    else
    $handle = @stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );

    if ( $secure_transport )
    error_reporting( $error_reporting );

    } else {
    if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
    $handle = stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
    else
    $handle = stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
    }

    if ( false === $handle ) {
    // SSL connection failed due to expired/invalid cert, or, OpenSSL configuration is broken.
    if ( $secure_transport && 0 === $connection_error && '' === $connection_error_str )
    return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );

    return new WP_Error('http_request_failed', $connection_error . ': ' . $connection_error_str );
    }

    // Verify that the SSL certificate is valid for this request.
    if ( $secure_transport && $ssl_verify && ! $proxy->is_enabled() ) {
    if ( ! self::verify_ssl_certificate( $handle, $arrURL['host'] ) )
    return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );
    }

    stream_set_timeout( $handle, $timeout, $utimeout );

    if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.
    $requestPath = $url;
    else
    $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );

    if ( empty($requestPath) )
    $requestPath .= '/';

    $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";

    if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
    $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
    else
    $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";

    if ( isset($r['user-agent']) )
    $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";

    if ( is_array($r['headers']) ) {
    foreach ( (array) $r['headers'] as $header => $headerValue )
    $strHeaders .= $header . ': ' . $headerValue . "\r\n";
    } else {
    $strHeaders .= $r['headers'];
    }

    if ( $proxy->use_authentication() )
    $strHeaders .= $proxy->authentication_header() . "\r\n";

    $strHeaders .= "\r\n";

    if ( ! is_null($r['body']) )
    $strHeaders .= $r['body'];

    fwrite($handle, $strHeaders);

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

    $strResponse = '';
    $bodyStarted = false;
    $keep_reading = true;
    $block_size = 4096;
    if ( isset( $r['limit_response_size'] ) )
    $block_size = min( $block_size, $r['limit_response_size'] );

    // If streaming to a file setup the file handle.
    if ( $r['stream'] ) {
    if ( ! WP_DEBUG )
    $stream_handle = @fopen( $r['filename'], 'w+' );
    else
    $stream_handle = fopen( $r['filename'], 'w+' );
    if ( ! $stream_handle )
    return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );

    $bytes_written = 0;
    while ( ! feof($handle) && $keep_reading ) {
    $block = fread( $handle, $block_size );
    if ( ! $bodyStarted ) {
    $strResponse .= $block;
    if ( strpos( $strResponse, "\r\n\r\n" ) ) {
    $process = WP_Http::processResponse( $strResponse );
    $bodyStarted = true;
    $block = $process['body'];
    unset( $strResponse );
    $process['body'] = '';
    }
    }

    $this_block_size = strlen( $block );

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

    $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( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size'];
    }

    fclose( $stream_handle );

    } else {
    $header_length = 0;
    while ( ! feof( $handle ) && $keep_reading ) {
    $block = fread( $handle, $block_size );
    $strResponse .= $block;
    if ( ! $bodyStarted && strpos( $strResponse, "\r\n\r\n" ) ) {
    $header_length = strpos( $strResponse, "\r\n\r\n" ) + 4;
    $bodyStarted = true;
    }
    $keep_reading = ( ! $bodyStarted || !isset( $r['limit_response_size'] ) || strlen( $strResponse ) < ( $header_length + $r['limit_response_size'] ) );
    }

    $process = WP_Http::processResponse( $strResponse );
    unset( $strResponse );

    }

    fclose( $handle );

    $arrHeaders = WP_Http::processHeaders( $process['headers'], $url );

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

    // Handle redirects.
    if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) )
    return $redirect_response;

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

    if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) )
    $process['body'] = WP_Http_Encoding::decompress( $process['body'] );

    if ( isset( $r['limit_response_size'] ) && strlen( $process['body'] ) > $r['limit_response_size'] )
    $process['body'] = substr( $process['body'], 0, $r['limit_response_size'] );

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

    return $response;
    }

    /**
    * Verifies the received SSL certificate against it's 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
    * @static
    *
    * @param stream $stream The PHP Stream which the SSL request is being made over
    * @param string $host The hostname being requested
    * @return bool If the cerficiate 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 ( $host_type == strtolower( trim( $match_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 ) )
    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 );
    }

    /**
    * Whether this class can be used for retrieving a URL.
    *
    * @static
    * @access public
    * @since 2.7.0
    * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
    *
    * @return boolean False means this class can not be used, true means it can.
    */
    public static function test( $args = array() ) {
    if ( ! function_exists( 'stream_socket_client' ) )
    return false;

    $is_ssl = isset( $args['ssl'] ) && $args['ssl'];

    if ( $is_ssl ) {
    if ( ! extension_loaded( 'openssl' ) )
    return false;
    if ( ! function_exists( 'openssl_x509_parse' ) )
    return false;
    }

    /**
    * Filter whether streams can be used as a transport for retrieving a URL.
    *
    * @since 2.7.0
    *
    * @param bool $use_class Whether the class can be used. Default true.
    * @param array $args Request arguments.
    */
    return apply_filters( 'use_streams_transport', true, $args );
    }
    }

    /**
    * Deprecated HTTP Transport method which used fsockopen.
    *
    * This class is not used, and is included for backwards compatibility only.
    * All code should make use of WP_HTTP directly through it's API.
    *
    * @see WP_HTTP::request
    *
    * @since 2.7.0
    * @deprecated 3.7.0 Please use WP_HTTP::request() directly
    */
    class WP_HTTP_Fsockopen extends WP_HTTP_Streams {
    // For backwards compatibility for users who are using the class directly.
    }

    /**
    * HTTP request method uses Curl extension to retrieve the url.
    *
    * Requires the Curl extension to be installed.
    *
    * @package WordPress
    * @subpackage HTTP
    * @since 2.7.0
    */
    class WP_Http_Curl {

    /**
    * Temporary header storage for during requests.
    *
    * @since 3.2.0
    * @access private
    * @var string
    */
    private $headers = '';

    /**
    * Temporary body storage for during requests.
    *
    * @since 3.6.0
    * @access private
    * @var string
    */
    private $body = '';

    /**
    * The maximum amount of data to receive from the remote server.
    *
    * @since 3.6.0
    * @access private
    * @var int
    */
    private $max_body_length = false;

    /**
    * The file resource used for streaming to file.
    *
    * @since 3.6.0
    * @access private
    * @var resource
    */
    private $stream_handle = false;

    /**
    * Send a HTTP request to a URI using cURL extension.
    *
    * @access public
    * @since 2.7.0
    *
    * @param string $url The request URL.
    * @param string|array $args Optional. Override the defaults.
    * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
    */
    public function request($url, $args = array()) {
    $defaults = array(
    'method' => 'GET', 'timeout' => 5,
    'redirection' => 5, 'httpversion' => '1.0',
    'blocking' => true,
    'headers' => array(), 'body' => null, 'cookies' => array()
    );

    $r = wp_parse_args( $args, $defaults );

    if ( isset($r['headers']['User-Agent']) ) {
    $r['user-agent'] = $r['headers']['User-Agent'];
    unset($r['headers']['User-Agent']);
    } else if ( isset($r['headers']['user-agent']) ) {
    $r['user-agent'] = $r['headers']['user-agent'];
    unset($r['headers']['user-agent']);
    }

    // Construct Cookie: header if any cookies are set.
    WP_Http::buildCookieHeader( $r );

    $handle = curl_init();

    // cURL offers really easy proxy support.
    $proxy = new WP_HTTP_Proxy();

    if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {

    curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
    curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
    curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );

    if ( $proxy->use_authentication() ) {
    curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );
    curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
    }
    }

    $is_local = isset($r['local']) && $r['local'];
    $ssl_verify = isset($r['sslverify']) && $r['sslverify'];
    if ( $is_local ) {
    /** This filter is documented in wp-includes/class-http.php */
    $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify );
    } elseif ( ! $is_local ) {
    /** This filter is documented in wp-includes/class-http.php */
    $ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify );
    }

    /*
    * CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since.
    * a value of 0 will allow an unlimited timeout.
    */
    $timeout = (int) ceil( $r['timeout'] );
    curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout );
    curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );

    curl_setopt( $handle, CURLOPT_URL, $url);
    curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
    curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, ( $ssl_verify === true ) ? 2 : false );
    curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify );
    curl_setopt( $handle, CURLOPT_CAINFO, $r['sslcertificates'] );
    curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );

    /*
    * The option doesn't work with safe mode or when open_basedir is set, and there's
    * a bug #17490 with redirected POST requests, so handle redirections outside Curl.
    */
    curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, false );
    if ( defined( 'CURLOPT_PROTOCOLS' ) ) // PHP 5.2.10 / cURL 7.19.4
    curl_setopt( $handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS );

    switch ( $r['method'] ) {
    case 'HEAD':
    curl_setopt( $handle, CURLOPT_NOBODY, true );
    break;
    case 'POST':
    curl_setopt( $handle, CURLOPT_POST, true );
    curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
    break;
    case 'PUT':
    curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );
    curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
    break;
    default:
    curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, $r['method'] );
    if ( ! is_null( $r['body'] ) )
    curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
    break;
    }

    if ( true === $r['blocking'] ) {
    curl_setopt( $handle, CURLOPT_HEADERFUNCTION, array( $this, 'stream_headers' ) );
    curl_setopt( $handle, CURLOPT_WRITEFUNCTION, array( $this, 'stream_body' ) );
    }

    curl_setopt( $handle, CURLOPT_HEADER, false );

    if ( isset( $r['limit_response_size'] ) )
    $this->max_body_length = intval( $r['limit_response_size'] );
    else
    $this->max_body_length = false;

    // If streaming to a file open a file handle, and setup our curl streaming handler.
    if ( $r['stream'] ) {
    if ( ! WP_DEBUG )
    $this->stream_handle = @fopen( $r['filename'], 'w+' );
    else
    $this->stream_handle = fopen( $r['filename'], 'w+' );
    if ( ! $this->stream_handle )
    return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );
    } else {
    $this->stream_handle = false;
    }

    $r['headers'] = apply_filters('http_curl_headers', $r['headers']); //Added by WHMCS Integration

    if ( !empty( $r['headers'] ) ) {
    // cURL expects full header strings in each element.
    $headers = array();
    foreach ( $r['headers'] as $name => $value ) {
    $headers[] = "{$name}: $value";
    }
    curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );
    }

    if ( $r['httpversion'] == '1.0' )
    curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );
    else
    curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );

    /**
    * Fires before the cURL request is executed.
    *
    * Cookies are not currently handled by the HTTP API. This action allows
    * plugins to handle cookies themselves.
    *
    * @since 2.8.0
    *
    * @param resource &$handle The cURL handle returned by curl_init().
    * @param array $r The HTTP request arguments.
    * @param string $url The request URL.
    */
    do_action_ref_array( 'http_api_curl', array( &$handle, $r, $url ) );

    // We don't need to return the body, so don't. Just execute request and return.
    if ( ! $r['blocking'] ) {
    curl_exec( $handle );

    if ( $curl_error = curl_error( $handle ) ) {
    curl_close( $handle );
    return new WP_Error( 'http_request_failed', $curl_error );
    }
    if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) {
    curl_close( $handle );
    return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
    }

    curl_close( $handle );
    return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
    }

    curl_exec( $handle );
    $theHeaders = WP_Http::processHeaders( $this->headers, $url );
    $theBody = $this->body;

    $this->headers = '';
    $this->body = '';

    $curl_error = curl_errno( $handle );

    // If an error occurred, or, no response.
    if ( $curl_error || ( 0 == strlen( $theBody ) && empty( $theHeaders['headers'] ) ) ) {
    if ( CURLE_WRITE_ERROR /* 23 */ == $curl_error && $r['stream'] ) {
    fclose( $this->stream_handle );
    return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
    }
    if ( $curl_error = curl_error( $handle ) ) {
    curl_close( $handle );
    return new WP_Error( 'http_request_failed', $curl_error );
    }
    if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) {
    curl_close( $handle );
    return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
    }
    }

    $response = array();
    $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE );
    $response['message'] = get_status_header_desc($response['code']);

    curl_close( $handle );

    if ( $r['stream'] )
    fclose( $this->stream_handle );

    $response = array(
    'headers' => $theHeaders['headers'],
    'body' => null,
    'response' => $response,
    'cookies' => $theHeaders['cookies'],
    'filename' => $r['filename']
    );

    // Handle redirects.
    if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) )
    return $redirect_response;

    if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) )
    $theBody = WP_Http_Encoding::decompress( $theBody );

    $response['body'] = $theBody;

    return $response;
    }

    /**
    * Grab the headers of the cURL request
    *
    * Each header is sent individually to this callback, so we append to the $header property for temporary storage
    *
    * @since 3.2.0
    * @access private
    * @return int
    */
    private function stream_headers( $handle, $headers ) {
    $this->headers .= $headers;
    return strlen( $headers );
    }

    /**
    * Grab the body of the cURL request
    *
    * The contents of the document are passed in chunks, so we append to the $body property for temporary storage.
    * Returning a length shorter than the length of $data passed in will cause cURL to abort the request as "completed"
    *
    * @since 3.6.0
    * @access private
    * @return int
    */
    private function stream_body( $handle, $data ) {
    $data_length = strlen( $data );

    if ( $this->max_body_length && ( strlen( $this->body ) + $data_length ) > $this->max_body_length )
    $data = substr( $data, 0, ( $this->max_body_length - $data_length ) );

    if ( $this->stream_handle ) {
    $bytes_written = fwrite( $this->stream_handle, $data );
    } else {
    $this->body .= $data;
    $bytes_written = $data_length;
    }

    // Upon event of this function returning less than strlen( $data ) curl will error with CURLE_WRITE_ERROR.
    return $bytes_written;
    }

    /**
    * Whether this class can be used for retrieving an URL.
    *
    * @static
    * @since 2.7.0
    *
    * @return boolean False means this class can not be used, true means it can.
    */
    public static function test( $args = array() ) {
    if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) )
    return false;

    $is_ssl = isset( $args['ssl'] ) && $args['ssl'];

    if ( $is_ssl ) {
    $curl_version = curl_version();
    // Check whether this cURL version support SSL requests.
    if ( ! (CURL_VERSION_SSL & $curl_version['features']) )
    return false;
    }

    /**
    * Filter whether cURL can be used as a transport for retrieving a URL.
    *
    * @since 2.7.0
    *
    * @param bool $use_class Whether the class can be used. Default true.
    * @param array $args An array of request arguments.
    */
    return apply_filters( 'use_curl_transport', true, $args );
    }
    }

    /**
    * Adds Proxy support to the WordPress HTTP API.
    *
    * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to
    * enable proxy support. There are also a few filters that plugins can hook into for some of the
    * constants.
    *
    * Please note that only BASIC authentication is supported by most transports.
    * cURL MAY support more methods (such as NTLM authentication) depending on your environment.
    *
    * The constants are as follows:
    *

      *
    1. WP_PROXY_HOST - Enable proxy support and host for connecting.
    2. *

    3. WP_PROXY_PORT - Proxy port for connection. No default, must be defined.
    4. *

    5. WP_PROXY_USERNAME - Proxy username, if it requires authentication.
    6. *

    7. WP_PROXY_PASSWORD - Proxy password, if it requires authentication.
    8. *

    9. WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy.
      * You do not need to have localhost and the blog host in this list, because they will not be passed
      * through the proxy. The list should be presented in a comma separated list, wildcards using * are supported, eg. *.wordpress.org
    10. *

    *
    * An example can be as seen below.
    *
    * define('WP_PROXY_HOST', '192.168.84.101');
    * define('WP_PROXY_PORT', '8080');
    * define('WP_PROXY_BYPASS_HOSTS', 'localhost, http://www.example.com, *.wordpress.org');
    *

    *
    * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.
    * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_PROXY_BYPASS_HOSTS
    * @since 2.8.0
    */
    class WP_HTTP_Proxy {

    /**
    * Whether proxy connection should be used.
    *
    * @since 2.8.0
    *
    * @use WP_PROXY_HOST
    * @use WP_PROXY_PORT
    *
    * @return bool
    */
    public function is_enabled() {
    return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT');
    }

    /**
    * Whether authentication should be used.
    *
    * @since 2.8.0
    *
    * @use WP_PROXY_USERNAME
    * @use WP_PROXY_PASSWORD
    *
    * @return bool
    */
    public function use_authentication() {
    return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD');
    }

    /**
    * Retrieve the host for the proxy server.
    *
    * @since 2.8.0
    *
    * @return string
    */
    public function host() {
    if ( defined('WP_PROXY_HOST') )
    return WP_PROXY_HOST;

    return '';
    }

    /**
    * Retrieve the port for the proxy server.
    *
    * @since 2.8.0
    *
    * @return string
    */
    public function port() {
    if ( defined('WP_PROXY_PORT') )
    return WP_PROXY_PORT;

    return '';
    }

    /**
    * Retrieve the username for proxy authentication.
    *
    * @since 2.8.0
    *
    * @return string
    */
    public function username() {
    if ( defined('

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