Datagram network is supported with the following functions.
:flags ¶A simple interface to the Unix recvfrom function. Returns
three values: bytecount, source address as integer, and source
port. Bytecount can of course be negative, to indicate faults.
:flags ¶A simple interface to the Unix sendto function.
A simple interface to the Unix shutdown function. For
level, you may use the following symbols to close one or
both ends of a socket: shut-rd, shut-wr,
shut-rdwr.