The type for UDP errors.

pp is the pretty-printer for errors.

The type for an IP address representations.

The type representing the internal state of the UDP layer.

Disconnect from the UDP layer. While this might take some time to complete, it can never result in an error.

The type for callback functions that adds the UDP metadata for src and dst IP addresses, the src_port of the connection and the buffer payload of the datagram.

listen t ~port callback executes callback for each packet received on port.

• raises Invalid_argument

  if port < 0 or port > 65535

unlisten t ~port stops any listeners on port.

input t demultiplexes incoming datagrams based on their destination port.

write ~src ~src_port ~ttl ~dst ~dst_port udp data is a task that writes data from an optional src and src_port to a dst and dst_port IP address pair. An optional time-to-live (ttl) is passed through to the IP layer.