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From: dean gaudet <dean-list-linux-kernel@arctic.org>
To: Jan Hudec <bulb@ucw.cz>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: Client receives TCP packets but does not ACK
Date: Mon, 18 Jun 2001 09:17:25 -0700 (PDT)	[thread overview]
Message-ID: <Pine.LNX.4.33.0106180913560.312-100000@twinlark.arctic.org> (raw)
In-Reply-To: <20010618135018.A12320@artax.karlin.mff.cuni.cz>

On Mon, 18 Jun 2001, Jan Hudec wrote:

> Btw: can the aplication somehow ask the tcp/ip stack what was actualy acked?
> (ie. how many bytes were acked).

no, but it's not necessarily a useful number anyhow -- because it's
possible that the remote end ACKd bytes but the ACK never arrives.  so you
can get into a situation where the remote application has the entire
message but the local application doesn't know.  the only way to solve
this is above the TCP layer.  (message duplicate elimination using an
unique id.)

if the #bytes ack'd was available it would probably fool people into
implementing buggy code (which of course they do anyhow :)

-dean


  reply	other threads:[~2001-06-18 16:17 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-15 12:53 Client receives TCP packets but does not ACK Heusden, Folkert van
2001-06-15 18:27 ` Mike Black
2001-06-15 18:39   ` Gérard Roudier
2001-06-15 19:12   ` Alan Cox
2001-06-17 18:17     ` Pavel Machek
2001-06-17 19:32       ` Alan Cox
2001-06-17 19:40       ` Dan Podeanu
     [not found]         ` <200106172113.f5HLDhJ377473@saturn.cs.uml.edu>
2001-06-17 22:09           ` Dan Podeanu
2001-06-17 22:35         ` dean gaudet
2001-06-18 11:50 ` Jan Hudec
2001-06-18 16:17   ` dean gaudet [this message]
2001-06-18 16:48     ` Jonathan Morton
2001-06-18 22:30       ` dean gaudet
2001-06-18 23:43         ` Jonathan Morton
2001-06-19  2:46           ` dean gaudet
2001-06-20 21:01   ` David Schwartz
  -- strict thread matches above, loose matches on Subject: below --
2001-07-01 21:27 Nivedita Singhvi
2001-07-11  3:43 ` Robert Kleemann
     [not found] <E15BiHy-0002xC-00@the-village.bc.nu.suse.lists.linux.kernel>
2001-06-17 20:21 ` Andi Kleen
     [not found] <Pine.LNX.4.33.0106121720310.1152-100000@localhost.localdomain.suse.lists.linux.kernel>
2001-06-13  8:48 ` Andi Kleen
2001-06-13 16:09   ` Robert Kleemann
2001-06-13  0:26 Robert Kleemann
2001-06-15  3:50 ` Robert Kleemann
2001-06-15 12:44   ` Mike Black
2001-06-15 18:29     ` Albert D. Cahalan
2001-06-15 23:10       ` Robert Kleemann
2001-06-16 11:55       ` Mike Black
2001-06-16 23:56 ` Robert Kleemann
2001-06-27  1:04   ` Robert Kleemann

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