Function encode_udp_payload 

pub fn encode_udp_payload<B>(
    out: &mut B,
    payload: &[u8],
) -> Result<(), ContextPayloadError>
where
    B: BufMut,

Available on crate feature masque only.

Append a context-0 HTTP Datagram payload carrying payload.

Payloads above MAX_UDP_PAYLOAD are refused and nothing is written.