WP_Http::head()
Method: Uses the HEAD HTTP method.
Source: wp-includes/class-wp-http.php:673
http_request_version
Filter Hook: Filters the version of the HTTP protocol used in a request.
Source: wp-includes/class-wp-http.php:182
WP_Http::processResponse()
Method: Parses the responses and splits the parts into headers and body.
Source: wp-includes/class-wp-http.php:692
http_request_reject_unsafe_urls
Filter Hook: Filters whether to pass URLs through wp_http_validate_url() in an HTTP request.
Source: wp-includes/class-wp-http.php:202
WP_Http::processHeaders()
Method: Transforms header string into an array.
Source: wp-includes/class-wp-http.php:724
send_origin_headers()
Function: Send Access-Control-Allow-Origin and related headers if the current request is from an allowed origin.
Source: wp-includes/http.php:493
wp_http_validate_url()
Function: Validate a URL for safe use in the HTTP API.
Source: wp-includes/http.php:521
http_request_host_is_external
Filter Hook: Check if HTTP request is external or not.
Source: wp-includes/http.php:597
allowed_http_request_hosts()
Function: Mark allowed redirect hosts safe for HTTP requests as well.
Source: wp-includes/http.php:644
ms_allowed_http_request_hosts()
Function: Adds any domain in a multisite installation for safe HTTP requests to the allowed list.
Source: wp-includes/http.php:665