pub unsafe extern "C" fn coap_proxy_forward_response(
session: *mut coap_session_t,
received: *const coap_pdu_t,
cache_key: *mut *mut coap_cache_key_t,
) -> coap_response_t
pub unsafe extern "C" fn coap_proxy_forward_response(
session: *mut coap_session_t,
received: *const coap_pdu_t,
cache_key: *mut *mut coap_cache_key_t,
) -> coap_response_t