mirror of
https://github.com/git/git.git
synced 2024-12-01 05:54:16 +08:00
0d0bac67ce
The git-over-rsync protocol is inefficient and broken, and has been for a long time. It transfers way more objects than it needs (grabbing all of the remote's "objects/", regardless of which objects we need). It does its own ad-hoc parsing of loose and packed refs from the remote, but doesn't properly override packed refs with loose ones, leading to garbage results (e.g., expecting the other side to have an object pointed to by a stale packed-refs entry, or complaining that the other side has two copies of the refs[1]). This latter breakage means that nobody could have successfully pulled from a moderately active repository sincecd547b4(fetch/push: readd rsync support, 2007-10-01). We never made an official deprecation notice in the release notes for git's rsync protocol, but the tutorial has marked it as such since914328a(Update tutorial., 2005-08-30). And on the mailing list as far back as Oct 2005, we can find Junio mentioning it as having "been deprecated for quite some time."[2,3,4]. So it was old news then; cogito had deprecated the transport in July of 2005[5] (though it did come back briefly when Linus broke git-http-pull!). Of course some people professed their love of rsync through 2006, but Linus clarified in his usual gentle manner[6]: > Thanks! This is why I still use rsync, even though > everybody and their mother tells me "Linus says rsync is > deprecated." No. You're using rsync because you're actively doing something _wrong_. The deprecation sentiment was reinforced in 2008, with a mention that cloning via rsync is broken (with no fix)[7]. Even the commit porting rsync over to C from shell (cd547b4) lists it as deprecated! So between the 10 years of informal warnings, and the fact that it has been severely broken since 2007, it's probably safe to simply remove it without further deprecation warnings. [1] http://article.gmane.org/gmane.comp.version-control.git/285101 [2] http://article.gmane.org/gmane.comp.version-control.git/10093 [3] http://article.gmane.org/gmane.comp.version-control.git/17734 [4] http://article.gmane.org/gmane.comp.version-control.git/18911 [5] http://article.gmane.org/gmane.comp.version-control.git/5617 [6] http://article.gmane.org/gmane.comp.version-control.git/19354 [7] http://article.gmane.org/gmane.comp.version-control.git/103635 Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
106 lines
3.4 KiB
Plaintext
106 lines
3.4 KiB
Plaintext
GIT URLS[[URLS]]
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In general, URLs contain information about the transport protocol, the
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address of the remote server, and the path to the repository.
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Depending on the transport protocol, some of this information may be
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absent.
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Git supports ssh, git, http, and https protocols (in addition, ftp,
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and ftps can be used for fetching, but this is inefficient and
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deprecated; do not use it).
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The native transport (i.e. git:// URL) does no authentication and
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should be used with caution on unsecured networks.
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The following syntaxes may be used with them:
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- ssh://{startsb}user@{endsb}host.xz{startsb}:port{endsb}/path/to/repo.git/
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- git://host.xz{startsb}:port{endsb}/path/to/repo.git/
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- http{startsb}s{endsb}://host.xz{startsb}:port{endsb}/path/to/repo.git/
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- ftp{startsb}s{endsb}://host.xz{startsb}:port{endsb}/path/to/repo.git/
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An alternative scp-like syntax may also be used with the ssh protocol:
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- {startsb}user@{endsb}host.xz:path/to/repo.git/
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This syntax is only recognized if there are no slashes before the
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first colon. This helps differentiate a local path that contains a
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colon. For example the local path `foo:bar` could be specified as an
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absolute path or `./foo:bar` to avoid being misinterpreted as an ssh
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url.
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The ssh and git protocols additionally support ~username expansion:
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- ssh://{startsb}user@{endsb}host.xz{startsb}:port{endsb}/~{startsb}user{endsb}/path/to/repo.git/
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- git://host.xz{startsb}:port{endsb}/~{startsb}user{endsb}/path/to/repo.git/
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- {startsb}user@{endsb}host.xz:/~{startsb}user{endsb}/path/to/repo.git/
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For local repositories, also supported by Git natively, the following
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syntaxes may be used:
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- /path/to/repo.git/
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- \file:///path/to/repo.git/
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ifndef::git-clone[]
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These two syntaxes are mostly equivalent, except when cloning, when
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the former implies --local option. See linkgit:git-clone[1] for
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details.
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endif::git-clone[]
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ifdef::git-clone[]
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These two syntaxes are mostly equivalent, except the former implies
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--local option.
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endif::git-clone[]
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When Git doesn't know how to handle a certain transport protocol, it
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attempts to use the 'remote-<transport>' remote helper, if one
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exists. To explicitly request a remote helper, the following syntax
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may be used:
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- <transport>::<address>
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where <address> may be a path, a server and path, or an arbitrary
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URL-like string recognized by the specific remote helper being
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invoked. See linkgit:gitremote-helpers[1] for details.
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If there are a large number of similarly-named remote repositories and
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you want to use a different format for them (such that the URLs you
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use will be rewritten into URLs that work), you can create a
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configuration section of the form:
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------------
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[url "<actual url base>"]
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insteadOf = <other url base>
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------------
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For example, with this:
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------------
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[url "git://git.host.xz/"]
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insteadOf = host.xz:/path/to/
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insteadOf = work:
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------------
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a URL like "work:repo.git" or like "host.xz:/path/to/repo.git" will be
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rewritten in any context that takes a URL to be "git://git.host.xz/repo.git".
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If you want to rewrite URLs for push only, you can create a
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configuration section of the form:
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------------
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[url "<actual url base>"]
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pushInsteadOf = <other url base>
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------------
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For example, with this:
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------------
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[url "ssh://example.org/"]
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pushInsteadOf = git://example.org/
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------------
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a URL like "git://example.org/path/to/repo.git" will be rewritten to
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"ssh://example.org/path/to/repo.git" for pushes, but pulls will still
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use the original URL.
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