get_http_origin() WordPress Function

function get_http_origin() {
	$origin = '';
	if ( ! empty( $_SERVER['HTTP_ORIGIN'] ) ) {
		$origin = $_SERVER['HTTP_ORIGIN'];
	}

	/**
	 * Change the origin of an HTTP request.
	 *
	 * @since 3.4.0
	 *
	 * @param string $origin The original origin for the request.
	 */
	return apply_filters( 'http_origin', $origin );
}
Uses	Description
wp-includes/http.php:http_origin	Change the origin of an HTTP request.
wp-includes/plugin.php:apply_filters()	Calls the callback functions that have been added to a filter hook.
Used By	Description
wp-includes/rest-api.php:rest_send_cors_headers()	Sends Cross-Origin Resource Sharing headers with API requests.
wp-includes/http.php:is_allowed_http_origin()	Determines if the HTTP origin is an authorized one.
wp-includes/http.php:send_origin_headers()	Send Access-Control-Allow-Origin and related headers if the current request is from an allowed origin.