UNIX IPC Datagram Reliability under 4.2BSD

[pv.usc-cse%rand-relay at sri-unix.UUCP]

From:  Peter Vanderbilt <pv.usc-cse at rand-relay>


    It is pointless to require reliable datagrams; the whole point of
    datagrams is that they need not be reliable. If you want a reliable
    channel, use a stream; you can simulate datagrams on a stream.

It would be convenient to be able to reliably send one message without going
through the trouble (and overhead) of setting up a stream.