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From: Johannes Sixt <j.sixt@viscovery•net>
To: Johannes Schindelin <Johannes.Schindelin@gmx•de>
Cc: git@vger•kernel.org, gitster@pobox•com,
	Peter Harris <git@peter•is-a-geek.org>,
	Sebastian Schuberth <sschuberth@gmail•com>,
	Nicolas Pitre <nico@cam•org>
Subject: Re: [PATCH/RFC] recv_sideband: Band #2 always goes to stderr
Date: Tue, 10 Mar 2009 12:11:24 +0100	[thread overview]
Message-ID: <49B64ADC.2090406@viscovery.net> (raw)
In-Reply-To: <alpine.DEB.1.00.0903101153250.14295@intel-tinevez-2-302>

Johannes Schindelin schrieb:
> On Tue, 10 Mar 2009, Johannes Sixt wrote:
>> This removes the last parameter of recv_sideband, by which the callers
>> told which channel band #2 data should be written to. Since both callers
>> of the function passed 2 for the parameter, we hereby remove the
>> parameter and send band #2 to stderr explicitly using fprintf.
> 
> To be honest, I considered this myself.
> 
> But I think it is wrong.  Just because the current callers happen to 
> output to stderr does not mean that we would not like sidebands that 
> exchange binary data for other uses in the future.
> 
> I am thinking GitTorrent here.

Clearly, we are looking at git here, not GitTorrent. "Because we could" is
IMNSHO not a good justification keep code unnecessarily complicated.

> And clearly, sideband support was written with future uses like that in 
> mind, as it goes out of its way to transmit packets instead of strings.

All data producers and data consumers *in git* use band #2 to transport
error messages and progress report. GitTorrent cannot not talk to
upload-pack or upload-archive and expect to get arbitrary binary data over
band #2.

For use-cases that you have in mind in GitTorrent, the *protocol* may be a
good choice, but the current implementation is definitely a special case.

-- Hannes

  reply	other threads:[~2009-03-10 11:13 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1236639280u.git.johannes.schindelin@gmx.de>
2009-03-10  0:41 ` [PATCH] winansi: support ESC [ K (erase in line) Johannes Schindelin
2009-03-10  7:15   ` Johannes Sixt
2009-03-10  7:30     ` [PATCH/RFC] recv_sideband: Band #2 always goes to stderr Johannes Sixt
2009-03-10 10:56       ` Johannes Schindelin
2009-03-10 11:11         ` Johannes Sixt [this message]
2009-03-10 11:17           ` Johannes Sixt
2009-03-10 11:39             ` Johannes Schindelin
2009-03-10 12:14               ` Johannes Sixt
2009-03-10 12:52                 ` Johannes Schindelin
2009-03-10 14:26                   ` Johannes Sixt
2009-03-10 14:38                     ` Shawn O. Pearce
2009-03-10 14:46                       ` Johannes Schindelin
2009-03-10 23:59           ` Junio C Hamano
2009-03-10 14:46       ` Shawn O. Pearce
2009-03-10 15:02         ` Johannes Sixt
2009-03-10 15:07           ` Johannes Schindelin
2009-03-10 15:14             ` Johannes Sixt
2009-03-10 17:35               ` Nicolas Pitre
2009-03-10 16:35             ` Jay Soffian
2009-03-10 17:37       ` Nicolas Pitre
2009-03-10 21:54       ` [PATCH 1/2] recv_sideband: Bands #2 and #3 always go " Johannes Sixt
2009-03-10 21:58         ` [PATCH 2/2] winansi: support ESC [ K (erase in line) Johannes Sixt
2009-03-11 10:22           ` Johannes Schindelin
2009-03-10 11:31     ` [PATCH] " Johannes Schindelin
2009-03-10 12:29   ` Peter Harris
2009-03-10 12:54     ` Johannes Schindelin

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