wp-includes/rest-api/endpoints/class-wp-rest-url-details-controller.php:224Retrieves the document title from a remote URL.
$urlstringstring|WP_ErrorOne hook fires while WP_REST_URL_Details_Controller::get_remote_url() runs, in this order:
Filters the HTTP request args for URL data retrieval.
private function get_remote_url( $url ) { /* * Provide a modified UA string to workaround web properties which block WordPress "Pingbacks". * Why? The UA string used for pingback requests contains `WordPress/` which is very similar * to that used as the default UA string by the WP HTTP API. Therefore requests from this * REST endpoint are being unintentionally blocked as they are misidentified as pingback requests. * By slightly modifying the UA string, but still retaining the "WordPress" identification (via "WP") * we are able to work around this issue. * Example UA string: `WP-URLDetails/5.9-alpha-51389 (+http://localhost:8888)`. */ $modified_user_agent = 'WP-URLDetails/' . get_bloginfo( 'version' ) . ' (+' . get_bloginfo( 'url' ) . ')'; $args = array( 'limit_response_size' => 150 * KB_IN_BYTES, 'user-agent' => $modified_user_agent, ); /** * Filters the HTTP request args for URL data retrieval. * * Can be used to adjust response size limit and other WP_Http::request() args. * * @since 5.9.0 * * @param array $args Arguments used for the HTTP request. * @param string $url The attempted URL. */ $args = apply_filters( 'rest_url_details_http_request_args', $args, $url ); $response = wp_safe_remote_get( $url, $args ); if ( WP_Http::OK !== wp_remote_retrieve_response_code( $response ) ) { // Not saving the error response to cache since the error might be temporary. return new WP_Error( 'no_response', __( 'URL not found. Response returned a non-200 status code for this URL.' ), array( 'status' => WP_Http::NOT_FOUND ) ); } $remote_body = wp_remote_retrieve_body( $response ); if ( empty( $remote_body ) ) { return new WP_Error( 'no_content', __( 'Unable to retrieve body from response at this URL.' ), array( 'status' => WP_Http::NOT_FOUND ) ); } return $remote_body; }Introduced in 5.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-url-details-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.