WordPress at a glance
filter is not described

http_response filter-hook . WP 2.9.0

Filters the HTTP API response immediately before the response is returned.

Usage

add_filter( 'http_response', 'filter_function_name_9619', 10, 3 );
function filter_function_name_9619( $response, $r, $url ){
	// filter...

	return $response;
}
$response(array)
HTTP response.
$r(array)
HTTP request arguments.
$url(string)
The request URL.

Where the hook is called

WP_Http::request()
http_response
WP_Http::_dispatch_request()
http_response
wp-includes/class-http.php 423
return apply_filters( 'http_response', $response, $r, $url );
wp-includes/class-http.php 572
return apply_filters( 'http_response', $response, $args, $url );

Where the hook is used (in WP core)

Does not used.