Filters the preemptive return value of an HTTP request.

Returning a non-false value from the filter will short-circuit the HTTP request and return
early with that value. A filter should return one of:

• An array containing ‘headers’, ‘body’, ‘response’, ‘cookies’, and ‘filename’ elements
• A WP_Error instance
• boolean false to avoid short-circuiting the response

Returning any other value may result in unexpected behavior.

$pre = apply_filters( 'pre_http_request', false, $parsed_args, $url );