<?php

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/**

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* HTTP API: WP_Http class

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*

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* @package WordPress

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* @subpackage HTTP

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* @since 2.7.0

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*/

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if ( ! class_exists( 'Requests' ) ) {

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require ABSPATH . WPINC . '/class-requests.php';

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Requests::register_autoloader();

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Requests::set_certificate_path( ABSPATH . WPINC . '/certificates/ca-bundle.crt' );

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}

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/**

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* Core class used for managing HTTP transports and making HTTP requests.

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*

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* This class is used to consistently make outgoing HTTP requests easy for developers

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* while still being compatible with the many PHP configurations under which

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* WordPress runs.

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*

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* Debugging includes several actions, which pass different variables for debugging the HTTP API.

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*

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* @since 2.7.0

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*/

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class WP_Http {

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// Aliases for HTTP response codes.

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const HTTP_CONTINUE = 100;

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const SWITCHING_PROTOCOLS = 101;

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const PROCESSING = 102;

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const EARLY_HINTS = 103;

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const OK = 200;

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const CREATED = 201;

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const ACCEPTED = 202;

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const NON_AUTHORITATIVE_INFORMATION = 203;

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const NO_CONTENT = 204;

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const RESET_CONTENT = 205;

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const PARTIAL_CONTENT = 206;

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const MULTI_STATUS = 207;

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const IM_USED = 226;

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const MULTIPLE_CHOICES = 300;

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const MOVED_PERMANENTLY = 301;

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const FOUND = 302;

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const SEE_OTHER = 303;

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const NOT_MODIFIED = 304;

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const USE_PROXY = 305;

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const RESERVED = 306;

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const TEMPORARY_REDIRECT = 307;

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const PERMANENT_REDIRECT = 308;

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const BAD_REQUEST = 400;

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const UNAUTHORIZED = 401;

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const PAYMENT_REQUIRED = 402;

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const FORBIDDEN = 403;

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const NOT_FOUND = 404;

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const METHOD_NOT_ALLOWED = 405;

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const NOT_ACCEPTABLE = 406;

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const PROXY_AUTHENTICATION_REQUIRED = 407;

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const REQUEST_TIMEOUT = 408;

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const CONFLICT = 409;

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const GONE = 410;

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const LENGTH_REQUIRED = 411;

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const PRECONDITION_FAILED = 412;

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const REQUEST_ENTITY_TOO_LARGE = 413;

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const REQUEST_URI_TOO_LONG = 414;

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const UNSUPPORTED_MEDIA_TYPE = 415;

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const REQUESTED_RANGE_NOT_SATISFIABLE = 416;

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const EXPECTATION_FAILED = 417;

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const IM_A_TEAPOT = 418;

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const MISDIRECTED_REQUEST = 421;

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const UNPROCESSABLE_ENTITY = 422;

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const LOCKED = 423;

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const FAILED_DEPENDENCY = 424;

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const UPGRADE_REQUIRED = 426;

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const PRECONDITION_REQUIRED = 428;

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const TOO_MANY_REQUESTS = 429;

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const REQUEST_HEADER_FIELDS_TOO_LARGE = 431;

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const UNAVAILABLE_FOR_LEGAL_REASONS = 451;

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const INTERNAL_SERVER_ERROR = 500;

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const NOT_IMPLEMENTED = 501;

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const BAD_GATEWAY = 502;

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const SERVICE_UNAVAILABLE = 503;

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const GATEWAY_TIMEOUT = 504;

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const HTTP_VERSION_NOT_SUPPORTED = 505;

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const VARIANT_ALSO_NEGOTIATES = 506;

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const INSUFFICIENT_STORAGE = 507;

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const NOT_EXTENDED = 510;

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const NETWORK_AUTHENTICATION_REQUIRED = 511;

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/**

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* Send an HTTP request to a URI.

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*

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* Please note: The only URI that are supported in the HTTP Transport implementation

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* are the HTTP and HTTPS protocols.

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*

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* @since 2.7.0

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*

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* @param string $url The request URL.

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* @param string|array $args {

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* Optional. Array or string of HTTP request arguments.

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*

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* @type string $method Request method. Accepts 'GET', 'POST', 'HEAD', 'PUT', 'DELETE',

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* 'TRACE', 'OPTIONS', or 'PATCH'.

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* Some transports technically allow others, but should not be

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* assumed. Default 'GET'.

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* @type float $timeout How long the connection should stay open in seconds. Default 5.

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* @type int $redirection Number of allowed redirects. Not supported by all transports

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* Default 5.

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* @type string $httpversion Version of the HTTP protocol to use. Accepts '1.0' and '1.1'.

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* Default '1.0'.

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* @type string $user-agent User-agent value sent.

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* Default 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ).

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* @type bool $reject_unsafe_urls Whether to pass URLs through wp_http_validate_url().

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* Default false.

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* @type bool $blocking Whether the calling code requires the result of the request.

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* If set to false, the request will be sent to the remote server,

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* and processing returned to the calling code immediately, the caller

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* will know if the request succeeded or failed, but will not receive

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* any response from the remote server. Default true.

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* @type string|array $headers Array or string of headers to send with the request.

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* Default empty array.

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* @type array $cookies List of cookies to send with the request. Default empty array.

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* @type string|array $body Body to send with the request. Default null.

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* @type bool $compress Whether to compress the $body when sending the request.

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* Default false.

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* @type bool $decompress Whether to decompress a compressed response. If set to false and

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* compressed content is returned in the response anyway, it will

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* need to be separately decompressed. Default true.

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* @type bool $sslverify Whether to verify SSL for the request. Default true.

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* @type string $sslcertificates Absolute path to an SSL certificate .crt file.

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* Default ABSPATH . WPINC . '/certificates/ca-bundle.crt'.

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* @type bool $stream Whether to stream to a file. If set to true and no filename was

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* given, it will be droped it in the WP temp dir and its name will

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* be set using the basename of the URL. Default false.

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* @type string $filename Filename of the file to write to when streaming. $stream must be

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* set to true. Default null.

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* @type int $limit_response_size Size in bytes to limit the response to. Default null.

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*

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* }

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* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.

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* A WP_Error instance upon error.

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*/

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public function request( $url, $args = array() ) {

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$defaults = array(

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'method' => 'GET',

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/**

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* Filters the timeout value for an HTTP request.

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*

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* @since 2.7.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param float $timeout_value Time in seconds until a request times out. Default 5.

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* @param string $url The request URL.

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*/

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'timeout' => apply_filters( 'http_request_timeout', 5, $url ),

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/**

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* Filters the number of redirects allowed during an HTTP request.

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*

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* @since 2.7.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param int $redirect_count Number of redirects allowed. Default 5.

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* @param string $url The request URL.

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*/

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'redirection' => apply_filters( 'http_request_redirection_count', 5, $url ),

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/**

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* Filters the version of the HTTP protocol used in a request.

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*

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* @since 2.7.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param string $version Version of HTTP used. Accepts '1.0' and '1.1'. Default '1.0'.

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* @param string $url The request URL.

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*/

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'httpversion' => apply_filters( 'http_request_version', '1.0', $url ),

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/**

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* Filters the user agent value sent with an HTTP request.

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*

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* @since 2.7.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param string $user_agent WordPress user agent string.

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* @param string $url The request URL.

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*/

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'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ), $url ),

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/**

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* Filters whether to pass URLs through wp_http_validate_url() in an HTTP request.

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*

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* @since 3.6.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param bool $pass_url Whether to pass URLs through wp_http_validate_url(). Default false.

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* @param string $url The request URL.

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*/

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'reject_unsafe_urls' => apply_filters( 'http_request_reject_unsafe_urls', false, $url ),

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'blocking' => true,

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'headers' => array(),

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'cookies' => array(),

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'body' => null,

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'compress' => false,

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'decompress' => true,

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'sslverify' => true,

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'sslcertificates' => ABSPATH . WPINC . '/certificates/ca-bundle.crt',

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'stream' => false,

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'filename' => null,

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'limit_response_size' => null,

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);

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// Pre-parse for the HEAD checks.

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$args = wp_parse_args( $args );

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// By default, HEAD requests do not cause redirections.

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if ( isset( $args['method'] ) && 'HEAD' === $args['method'] ) {

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$defaults['redirection'] = 0;

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}

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

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/**

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* Filters the arguments used in an HTTP request.

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*

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* @since 2.7.0

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*

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* @param array $parsed_args An array of HTTP request arguments.

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* @param string $url The request URL.

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*/

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$parsed_args = apply_filters( 'http_request_args', $parsed_args, $url );

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// The transports decrement this, store a copy of the original value for loop purposes.

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if ( ! isset( $parsed_args['_redirection'] ) ) {

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$parsed_args['_redirection'] = $parsed_args['redirection'];

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}

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/**

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* Filters the preemptive return value of an HTTP request.

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*

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* Returning a non-false value from the filter will short-circuit the HTTP request and return

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* early with that value. A filter should return one of:

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*

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* - An array containing 'headers', 'body', 'response', 'cookies', and 'filename' elements

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* - A WP_Error instance

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* - boolean false to avoid short-circuiting the response

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*

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* Returning any other value may result in unexpected behaviour.

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*

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* @since 2.9.0

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*

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* @param false|array|WP_Error $preempt A preemptive return value of an HTTP request. Default false.

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* @param array $parsed_args HTTP request arguments.

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* @param string $url The request URL.

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*/

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$pre = apply_filters( 'pre_http_request', false, $parsed_args, $url );

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if ( false !== $pre ) {

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return $pre;

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}

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if ( function_exists( 'wp_kses_bad_protocol' ) ) {

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if ( $parsed_args['reject_unsafe_urls'] ) {

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$url = wp_http_validate_url( $url );

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}

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if ( $url ) {

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$url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) );

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}

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}

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$arrURL = parse_url( $url );

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if ( empty( $url ) || empty( $arrURL['scheme'] ) ) {

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$response = new WP_Error( 'http_request_failed', __( 'A valid URL was not provided.' ) );

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/** This action is documented in wp-includes/class-http.php */

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do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );

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return $response;

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}

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if ( $this->block_request( $url ) ) {

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$response = new WP_Error( 'http_request_not_executed', __( 'User has blocked requests through HTTP.' ) );

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/** This action is documented in wp-includes/class-http.php */

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do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );

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return $response;

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}

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// If we are streaming to a file but no filename was given drop it in the WP temp dir

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// and pick its name using the basename of the $url.

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if ( $parsed_args['stream'] ) {

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if ( empty( $parsed_args['filename'] ) ) {

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$parsed_args['filename'] = get_temp_dir() . basename( $url );

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}

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// Force some settings if we are streaming to a file and check for existence

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// and perms of destination directory.

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$parsed_args['blocking'] = true;

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if ( ! wp_is_writable( dirname( $parsed_args['filename'] ) ) ) {

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$response = new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );

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/** This action is documented in wp-includes/class-http.php */

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do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );

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return $response;

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}

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}

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if ( is_null( $parsed_args['headers'] ) ) {

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$parsed_args['headers'] = array();

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}

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// WP allows passing in headers as a string, weirdly.

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if ( ! is_array( $parsed_args['headers'] ) ) {

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$processedHeaders = WP_Http::processHeaders( $parsed_args['headers'] );

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$parsed_args['headers'] = $processedHeaders['headers'];

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}

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// Setup arguments.

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$headers = $parsed_args['headers'];

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$data = $parsed_args['body'];

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$type = $parsed_args['method'];

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$options = array(

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'timeout' => $parsed_args['timeout'],

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'useragent' => $parsed_args['user-agent'],

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'blocking' => $parsed_args['blocking'],

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'hooks' => new WP_HTTP_Requests_Hooks( $url, $parsed_args ),

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);

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// Ensure redirects follow browser behaviour.

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$options['hooks']->register( 'requests.before_redirect', array( get_class(), 'browser_redirect_compatibility' ) );

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// Validate redirected URLs.

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if ( function_exists( 'wp_kses_bad_protocol' ) && $parsed_args['reject_unsafe_urls'] ) {

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$options['hooks']->register( 'requests.before_redirect', array( get_class(), 'validate_redirects' ) );

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}

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if ( $parsed_args['stream'] ) {

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$options['filename'] = $parsed_args['filename'];

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}

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if ( empty( $parsed_args['redirection'] ) ) {

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$options['follow_redirects'] = false;

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} else {

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$options['redirects'] = $parsed_args['redirection'];

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}

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// Use byte limit, if we can.

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if ( isset( $parsed_args['limit_response_size'] ) ) {

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$options['max_bytes'] = $parsed_args['limit_response_size'];

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}

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// If we've got cookies, use and convert them to Requests_Cookie.

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if ( ! empty( $parsed_args['cookies'] ) ) {

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$options['cookies'] = WP_Http::normalize_cookies( $parsed_args['cookies'] );

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}

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// SSL certificate handling.

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if ( ! $parsed_args['sslverify'] ) {

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$options['verify'] = false;

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$options['verifyname'] = false;

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} else {

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$options['verify'] = $parsed_args['sslcertificates'];

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}

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// All non-GET/HEAD requests should put the arguments in the form body.

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if ( 'HEAD' !== $type && 'GET' !== $type ) {

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$options['data_format'] = 'body';

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}

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/**

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* Filters whether SSL should be verified for non-local requests.

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*

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* @since 2.8.0

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* @since 5.1.0 The `$url` parameter was added.

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*

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* @param bool $ssl_verify Whether to verify the SSL connection. Default true.

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* @param string $url The request URL.

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*/

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$options['verify'] = apply_filters( 'https_ssl_verify', $options['verify'], $url );

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// Check for proxies.

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$proxy = new WP_HTTP_Proxy();

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

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$options['proxy'] = new Requests_Proxy_HTTP( $proxy->host() . ':' . $proxy->port() );

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if ( $proxy->use_authentication() ) {

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$options['proxy']->use_authentication = true;

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$options['proxy']->user = $proxy->username();

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$options['proxy']->pass = $proxy->password();

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}

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}

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// Avoid issues where mbstring.func_overload is enabled.

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mbstring_binary_safe_encoding();

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try {

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$requests_response = Requests::request( $url, $headers, $data, $type, $options );

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// Convert the response into an array.

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$http_response = new WP_HTTP_Requests_Response( $requests_response, $parsed_args['filename'] );

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$response = $http_response->to_array();

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// Add the original object to the array.

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$response['http_response'] = $http_response;

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} catch ( Requests_Exception $e ) {

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$response = new WP_Error( 'http_request_failed', $e->getMessage() );

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}

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reset_mbstring_encoding();

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/**

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* Fires after an HTTP API response is received and before the response is returned.

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*

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* @since 2.8.0

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*

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* @param array|WP_Error $response HTTP response or WP_Error object.

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* @param string $context Context under which the hook is fired.

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* @param string $class HTTP transport used.

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* @param array $parsed_args HTTP request arguments.

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* @param string $url The request URL.

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*/

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do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );

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if ( is_wp_error( $response ) ) {

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return $response;

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}

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if ( ! $parsed_args['blocking'] ) {

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return array(

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'headers' => array(),

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'body' => '',

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'response' => array(

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'code' => false,

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'message' => false,

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),

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'cookies' => array(),

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'http_response' => null,

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);

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}

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/**

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* Filters the HTTP API response immediately before the response is returned.

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*

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* @since 2.9.0

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*

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* @param array $response HTTP response.

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* @param array $parsed_args HTTP request arguments.

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* @param string $url The request URL.

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*/

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return apply_filters( 'http_response', $response, $parsed_args, $url );

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}

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[447] Fix | Delete

/**

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* Normalizes cookies for using in Requests.

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*

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* @since 4.6.0

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*

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* @param array $cookies Array of cookies to send with the request.

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* @return Requests_Cookie_Jar Cookie holder object.

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*/

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public static function normalize_cookies( $cookies ) {

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$cookie_jar = new Requests_Cookie_Jar();

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foreach ( $cookies as $name => $value ) {

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if ( $value instanceof WP_Http_Cookie ) {

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$cookie_jar[ $value->name ] = new Requests_Cookie( $value->name, $value->value, $value->get_attributes(), array( 'host-only' => $value->host_only ) );

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} elseif ( is_scalar( $value ) ) {

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$cookie_jar[ $name ] = new Requests_Cookie( $name, $value );

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}

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}

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return $cookie_jar;

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}

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[469] Fix | Delete

/**

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* Match redirect behaviour to browser handling.

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*

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* Changes 302 redirects from POST to GET to match browser handling. Per

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* RFC 7231, user agents can deviate from the strict reading of the

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* specification for compatibility purposes.

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*

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* @since 4.6.0

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*

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* @param string $location URL to redirect to.

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* @param array $headers Headers for the redirect.

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* @param string|array $data Body to send with the request.

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* @param array $options Redirect request options.

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* @param Requests_Response $original Response object.

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*/

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public static function browser_redirect_compatibility( $location, $headers, $data, &$options, $original ) {

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// Browser compatibility.

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if ( 302 === $original->status_code ) {

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$options['type'] = Requests::GET;

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}

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}

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/**

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* Validate redirected URLs.

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*

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* @since 4.7.5

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*

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* @throws Requests_Exception On unsuccessful URL validation.

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* @param string $location URL to redirect to.

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*/

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