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function is not described

allowed_http_request_hosts() WP 3.6.0

Mark allowed redirect hosts safe for HTTP requests as well.

Attached to the http_request_host_is_external filter.

No Hooks.

Return

true|false.

Usage

allowed_http_request_hosts( $is_external, $host );
$is_external *(true false) (required)*
$host(string) (required)
-

Changelog

Since 3.6.0 Introduced.

Code of allowed_http_request_hosts() WP 5.7.2

<?php
function allowed_http_request_hosts( $is_external, $host ) {
	if ( ! $is_external && wp_validate_redirect( 'http://' . $host ) ) {
		$is_external = true;
	}
	return $is_external;
}