[Bug 19489] WinHttpSendRequest does not support empty string ("") as headers argument

http://bugs.winehq.org/show_bug.cgi?id=19489

--- Comment #2 from Austin English   2009-07-28 11:12:45 ---
(In reply to comment #0)
> Created an attachment (id=22659)

--> (http://bugs.winehq.org/attachment.cgi?id=22659) [details]
> simple fix for problem mentioned
>
> When using WinHttpSendRequest() with an empty string as 'headers' argument and
> -1 as a value for the header length, an INVALID_PARAMETER error is returned.
>
> add_request_headers() in winhttp/request.c correctly performs a strlen() on the
> headers argument if header length is specified as -1.
>
> The problem is that if headers is an empty string, and there is no actual
> header, the search for '\r\n\ fails, the terminating zero is found, and
> add_request_header breaks out of the loop with a FALSE return value.
>
> Under Windows, this call is successful.

Please add a testcase before submitting to wine-patches.