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In the event that a HTTP server closes the connection after giving a 200 but before giving any packets, we don't want to hang forever waiting for a response that will never come. Instead, we should die immediately. One case where this happens is when attempting to fetch a dangling object by its object name. In this case, the server dies before sending any data. Prior to this patch, fetch-pack would wait for data from the server, and remote-curl would wait for fetch-pack, causing a deadlock. Despite this patch, there is other possible malformed input that could cause the same deadlock (e.g. a half-finished pktline, or a pktline but no trailing flush). There are a few possible solutions to this: 1. Allowing remote-curl to tell fetch-pack about the EOF (so that fetch-pack could know that no more data is coming until it says something else). This is tricky because an out-of-band signal would be required, or the http response would have to be re-framed inside another layer of pkt-line or something. 2. Make remote-curl understand some of the protocol. It turns out that in addition to understanding pkt-line, it would need to watch for ack/nak. This is somewhat fragile, as information about the protocol would end up in two places. Also, pkt-lines which are already at the length limit would need special handling. Both of these solutions would require a fair amount of work, whereas this hack is easy and solves at least some of the problem. Still to do: it would be good to give a better error message than "fatal: The remote end hung up unexpectedly". Signed-off-by: David Turner <dturner@twosigma.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git - fast, scalable, distributed revision control system
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from http://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with man gittutorial or git help tutorial, and the
documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.txt
(man gitcvs-migration or git help cvs-migration if git is
installed).
The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://news.gmane.org/gmane.comp.version-control.git/, http://marc.info/?l=git and other archival sites.
The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):
- random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
- "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks