http_request_host_is_external filter-hook . WP 3.6.0

Check if HTTP request is external or not.

Allows to change and allow external requests for the HTTP request.

Usage

add_filter( 'http_request_host_is_external', 'filter_function_name_9757', 10, 3 );
function filter_function_name_9757( $external, $host, $url ){
	// filter...

	return $external;
}

$external(true/false)

Whether HTTP request is external or not.

$host(string)

Host name of the requested URL.

$url(string)

Requested URL.

Changelog

Where the hook is called

if ( ! apply_filters( 'http_request_host_is_external', false, $host, $url ) ) {

Where in WP core the hook is used WordPress

add_filter( 'http_request_host_is_external', 'allowed_http_request_hosts', 10, 2 );

add_filter( 'http_request_host_is_external', 'ms_allowed_http_request_hosts', 20, 2 );