WordPress at a glance
filter is not described

http_request_args filter-hook . WP 2.7.0

Filters the arguments used in an HTTP request.

Usage

add_filter( 'http_request_args', 'filter_function_name_1148', 10, 2 );
function filter_function_name_1148( $r, $url ){
	// filter...

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

Where the hook is called

WP_Http::request()
wp-includes/class-http.php 222
$r = apply_filters( 'http_request_args', $r, $url );

Where the hook is used (in WP core)

Does not used.