12.3 UDP Stream Objects

Note that, unlike the name suggests, there is nothing stream-like about UDP.

asr

The asynchronous service routine to be called on events such as datagram arrival without outstanding Read call. The asr has a single argument, the event code.

port

A read-only member giving the port number of this UDP Stream.

Read (timeout)

Read a datagram, waiting at most timeout seconds (-1 is infinite). Return the data.

Write (host, port, buf)

Send buf as a datagram to IP-address host, port port.