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The Git project is not exactly the easiest project to get started in: it's written in C and POSIX shell, with bits of Perl, Rust and other languages sprinkled into it. On top of that, the project has grown somewhat organically over time, making the codebase hard to navigate. These are problems that we're aware of, and there have been and still are efforts to clean up some of the technical debt that is natural to exist an a project that is more than 20 years old. Furthermore, we provide resources to newcomers that help them out like our coding guidelines, code of conduct or "MyFirstContribution.adoc". But there is a rather practical problem: finding your way around in our project's tree is not easy. Doing a directory listing in the top-level directory will present you with more than 550 files, which makes it extremely hard for a newcomer to figure out what files they are even supposed to look at. This makes the onboarding experience somewhat harder than it really needs to be. This isn't only a problem for newcomers though, as I myself struggle to find the files I am looking for because of the sheer number of files. Besides the problem of discoverability it also creates a problem of structure. It is not obvious at all which files are part of "libgit.a" and which files are only linked into our final executables. So while we have this split in our build systems, that split is not evident at all in our tree. Introduce a new "lib/" directory and move all of our sources for "libgit.a" into it to fix these issues. It makes the split we have evident and reduces the number of files in our top-level tree from 550 files to ~80 files. This is still a lot of files, but it's significantly easier to navigate already. Furthermore, we can further iterate after this step and think about introducing a better structure for remaining files, as well. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
#ifndef PROTOCOL_H
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#define PROTOCOL_H
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/*
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* Intensive research over the course of many years has shown that
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* port 9418 is totally unused by anything else. Or
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*
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* Your search - "port 9418" - did not match any documents.
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*
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* as www.google.com puts it.
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*
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* This port has been properly assigned for git use by IANA:
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* git (Assigned-9418) [I06-050728-0001].
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*
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* git 9418/tcp git pack transfer service
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* git 9418/udp git pack transfer service
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*
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* with Linus Torvalds <torvalds@osdl.org> as the point of
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* contact. September 2005.
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*
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* See https://www.iana.org/assignments/port-numbers
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*/
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#define DEFAULT_GIT_PORT 9418
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enum protocol_version {
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protocol_unknown_version = -1,
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protocol_v0 = 0,
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protocol_v1 = 1,
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protocol_v2 = 2,
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};
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/*
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* Used by a client to determine which protocol version to request be used when
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* communicating with a server, reflecting the configured value of the
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* 'protocol.version' config. If unconfigured, a value of 'protocol_v0' is
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* returned.
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*/
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enum protocol_version get_protocol_version_config(void);
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/*
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* Used by a server to determine which protocol version should be used based on
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* a client's request, communicated via the 'GIT_PROTOCOL' environment variable
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* by setting appropriate values for the key 'version'. If a client doesn't
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* request a particular protocol version, a default of 'protocol_v0' will be
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* used.
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*/
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enum protocol_version determine_protocol_version_server(void);
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/*
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* Used by a client to determine which protocol version the server is speaking
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* based on the server's initial response.
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*/
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enum protocol_version determine_protocol_version_client(const char *server_response);
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#endif /* PROTOCOL_H */
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