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httpclient: support expect/continue

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Allow users to opt-in to expect/continue handling when sending a POST
and we're authenticated with a "connection-based" authentication
mechanism like NTLM or Negotiate.

If the response is a 100, return to the caller (to allow them to post
their body).  If the response is *not* a 100, buffer the response for
the caller.

HTTP expect/continue is generally safe, but some legacy servers
have not implemented it correctly.  Require it to be opt-in.
This commit is contained in:
Edward Thomson
2019-10-25 12:22:10 +01:00
parent 6c21c989a3
commit 7372573b5f
7 changed files with 68 additions and 10 deletions
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8
include/git2/common.h
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@@ -203,7 +203,8 @@ typedef enum {
GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY,
GIT_OPT_GET_PACK_MAX_OBJECTS,
GIT_OPT_SET_PACK_MAX_OBJECTS,
GIT_OPT_DISABLE_PACK_KEEP_FILE_CHECKS
GIT_OPT_DISABLE_PACK_KEEP_FILE_CHECKS,
GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE
} git_libgit2_opt_t;
/**
@@ -397,6 +398,11 @@ typedef enum {
* > This will cause .keep file existence checks to be skipped when
* > accessing packfiles, which can help performance with remote filesystems.
*
* opts(GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE, int enabled)
* > When connecting to a server using NTLM or Negotiate
* > authentication, use expect/continue when POSTing data.
* > This option is not available on Windows.
*
* @param option Option key
* @param ... value to set the option
* @return 0 on success, <0 on failure