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Path: utzoo!utcsrgv!thomson
From: thomson@utcsrgv.UUCP (Brian Thomson)
Newsgroups: net.unix-wizards
Subject: Re: UNIX IPC Datagram Reliability under 4.2BSD
Message-ID: <3156@utcsrgv.UUCP>
Date: Wed, 18-Jan-84 17:44:23 EST
Article-I.D.: utcsrgv.3156
Posted: Wed Jan 18 17:44:23 1984
Date-Received: Wed, 18-Jan-84 19:38:56 EST
References: <2205@allegra.UUCP>
Organization: CSRG, University of Toronto
Lines: 13

The easy answer is that UNIX-domain datagrams are unreliable because
they are full of bugs.  The eye-for-the-future answer is that you get
indications of SOME errors (i.e. destination address is not a socket
or not a datagram socket) but not others.

In particular, if you send a message to a socket that doesn't have
sufficient buffer resources to hold it, the datagram is silently discarded.

At least, that's what I THINK happens.  It's difficult to test because
of the bugs.
-- 
			Brian Thomson,	    CSRG Univ. of Toronto
			{linus,ihnp4,uw-beaver,floyd,utzoo}!utcsrgv!thomson