From: Robin H. Johnson <robbat2@gentoo.org>
Date: Wed, 03 Jun 2009 02:18:40 GMT
Subject: Re: Request for detailed documentation of git pack protocol
Message-ID: <20090603021840.GE3042@orbis-terrarum.net>
In-Reply-To: <200906030250.01413.jnareb@gmail.com>

> >>> 	"0008NAK\n"
> >> What does this server response mean? That served doesn't need more
> >> info?
> > It means the server is answering a prior flush from the client,
> > and is saying "I still can't serve you, keep tell me more have".
> Hmmm... the communication between server and client is not entirely
> clean. Do I understand correctly that this NAK is response to clients
> flush after all those "want" lines? And that "0009done" from client
> tells server that it should send everything it has?
Relatedly with the "done" message, I'm in the process of writing a hook
that allows the server to deny the client at this point, instead of
building and sending a pack.

Suggestions on other modifications that might be needed to integrate. 
The hook:
- takes all want/have lines as input (maybe capabilities too?)
- returns 0/1
- on error, should also send a message to stderr, to be passed over the
  wire.

My intended use is to block initial clones while still allowing updates
(as long as you've got a tree at least commit X recent, I'll talk to
you). Initial and too-old clients get a message to go and download a
bundle instead.

-- 
Robin Hugh Johnson
Gentoo Linux Developer & Infra Guy
E-Mail     : robbat2@gentoo.org
GnuPG FP   : 11AC BA4F 4778 E3F6 E4ED  F38E B27B 944E 3488 4E85