[Bug 31051] HttpQueryInfo() erroneously ignores lpdwIndex argument for some info levels

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=31051

--- Comment #4 from Ron van der Wal <support at tarma.com> 2012-07-02 17:30:24 CDT ---
ADDITIONAL, CORRECTION: *lpdwIndex need only be updated (if lpdwIndex is
non-NULL) if another same-named header is in fact available, for example when
enumerating Set-Cookie headers.

However, the original reported bug still stands: If *lpdwIndex exceeds the
highest valid header index available for the given dwInfoLevel, then the
function should fail with error code ERROR_HTTP_HEADER_NOT_FOUND.

>From the Microsoft documentation for HttpQueryInfo():

"lpdwIndex [in, out]

Pointer to a zero-based header index used to enumerate multiple headers with
the same name. When calling the function, this parameter is the index of the
specified header to return. When the function returns, this parameter is the
index of the next header. If the next index cannot be found,
ERROR_HTTP_HEADER_NOT_FOUND is returned."

Note that this CORRECTION invalidates the original enumeration sample, but that
the information in the original report concerning the affected HTTP_QUERY_*
values is still correct.

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