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t5551: test v2-to-v0 http protocol fallback

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Since we use the v2 protocol by default, the connection of a v2 client
to a v2 server is well covered by the test suite. And with the
GIT_TEST_PROTOCOL_VERSION knob, we can easily test a v0 client
connecting to a v2-aware server (which will then just speak v0). But we
have no regular tests that a v2 client, when encountering a non-v2-aware
server, will correctly fall back to using v0.

In theory this is a job for the cross-version tests in t/interop, but:

  - they cover only git:// and file:// clones

  - they are not part of the usual test suite, so nobody ever runs them
    anyway

Since using v2 over http requires configuring the web server to pass
along the Git-Protocol header, we can easily create a situation where
the server does not respect the v2 probe, and the conversation falls
back to v0.

This works just fine. This new test is not about fixing any particular
bug, but just making sure that the system works (and continues to work)
as expected.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2021-09-10 10:04:42 -04:00
committed by Junio C Hamano
parent 225bc32a98
commit 26146980f1
2 changed files with 14 additions and 0 deletions
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5
t/lib-httpd/apache.conf
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@ -117,6 +117,11 @@ Alias /auth/dumb/ www/auth/dumb/
SetEnv GIT_EXEC_PATH ${GIT_EXEC_PATH}
SetEnv GIT_HTTP_EXPORT_ALL
</LocationMatch>
<LocationMatch /smart_v0/>
SetEnv GIT_EXEC_PATH ${GIT_EXEC_PATH}
SetEnv GIT_HTTP_EXPORT_ALL
SetEnv GIT_PROTOCOL
</LocationMatch>
ScriptAlias /smart/incomplete_length/git-upload-pack incomplete-length-upload-pack-v2-http.sh/
ScriptAlias /smart/incomplete_body/git-upload-pack incomplete-body-upload-pack-v2-http.sh/
ScriptAliasMatch /error_git_upload_pack/(.*)/git-upload-pack error.sh/