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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: S-expression I/O in Ada
Date: Tue, 10 Aug 2010 22:22:02 +0100
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> Yes, if TCP sockets is what you use. There is a hell of other
> protocols even on the Ethernet, some of which are not stream-oriented.

We leverage stream i/o via UDP (which on GNAT is seriously broken,
because it tries to do an OS sendto() for each elementary component!
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9535) by using 'Write into a
memory stream[1] on one side and then sendto() the constructed
Stream_Element_Array; and on the other side recvfrom() to get the
datagram contents, use this as input to a memory stream, then 'Read. (Of
course we could use 'Output and 'Input, but the data types involved are
all definite).

[1]
http://booch95.svn.sourceforge.net/viewvc/booch95/trunk/src/bc-support-memory_streams.ads?revision=1420&view=markup
http://booch95.svn.sourceforge.net/viewvc/booch95/trunk/src/bc-support-memory_streams.adb?revision=1428&view=markup