HttpSendRequestEx (unexpected behaviour)

[Petar Popara]

I'm doing this:

InternetOpen()
InternetConnect()
HttpOpenRequest()
HttpAddRequestHeaders()

HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()

HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()

HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()

HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()

Well, the problem is that HTTP server receives "content-length" allways the
same (during each HTTP request), although I'm sending different data! I am
setting content length like this:

INTERNET_BUFFERS BufferIn;
memset(&BufferIn, 0, sizeof( INTERNET_BUFFERS ));
BufferIn.dwStructSize = sizeof( INTERNET_BUFFERS );
BufferIn.dwBufferTotal = static_cast<DWORD>(a_request.GetLength());
HttpSendRequestEx( m_hHttp, &BufferIn, NULL, 0, 0 );

Is this a bug?

[Scherbina Vladimir]

Content-length is a header, why are not you using HttpAddRequestHeaders with
"Context-length: value" and then HttpSendRequest(Ex) ?

--
Vladimir

Post by Petar Popara
InternetOpen()
InternetConnect()
HttpOpenRequest()
HttpAddRequestHeaders()
HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()
HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()
HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()
HttpSendRequestEx()
InternetWriteFile()
HttpEndRequest()
InternetReadFile()
Well, the problem is that HTTP server receives "content-length" allways the
same (during each HTTP request), although I'm sending different data! I am
INTERNET_BUFFERS BufferIn;
memset(&BufferIn, 0, sizeof( INTERNET_BUFFERS ));
BufferIn.dwStructSize = sizeof( INTERNET_BUFFERS );
BufferIn.dwBufferTotal = static_cast<DWORD>(a_request.GetLength());
HttpSendRequestEx( m_hHttp, &BufferIn, NULL, 0, 0 );
Is this a bug?

[Petar Popara]

Well, I've been using it like it was explained here (including sample code):

http://support.microsoft.com/kb/q177188/

I will also try your suggestion.

Thank you.

[Scherbina Vladimir]

I followed the link you gave me and there is no code that works with headers
in that BigPost.cpp.
The only thing I noticed is that UseHttpSendReqEx initializes
INTERNET_BUFFERS BufferIn; and sets it to NULL:

BufferIn.lpcszHeader = NULL;

You may also try to set valid value for lpcszHeader in your code.

--
Vladimir

Post by Petar Popara
http://support.microsoft.com/kb/q177188/
I will also try your suggestion.
Thank you.

[Petar Popara]

Post by Scherbina Vladimir
I followed the link you gave me and there is no code that works with headers
in that BigPost.cpp.

This line sets "content-length" implicitly:

BufferIn.dwBufferTotal = dwPostSize;

Post by Scherbina Vladimir
The only thing I noticed is that UseHttpSendReqEx initializes
BufferIn.lpcszHeader = NULL;
You may also try to set valid value for lpcszHeader in your code.

Which value is valid? You mean "Content-length : x\r\n"?

[Scherbina Vladimir]

Post by Petar Popara

Post by Scherbina Vladimir
I followed the link you gave me and there is no code that works with headers
in that BigPost.cpp.

BufferIn.dwBufferTotal = dwPostSize;

Post by Scherbina Vladimir
The only thing I noticed is that UseHttpSendReqEx initializes
BufferIn.lpcszHeader = NULL;
You may also try to set valid value for lpcszHeader in your code.

Which value is valid? You mean "Content-length : x\r\n"?

yea

--
Vladimir

[Petar Popara]

Post by Scherbina Vladimir
Content-length is a header, why are not you using HttpAddRequestHeaders with
"Context-length: value" and then HttpSendRequest(Ex) ?

Works fine. Thank you. I had to change "Context-length: value" into
"Content-length: value". :)

[Scherbina Vladimir]

misprint ;)

--
Vladimir

Post by Petar Popara

Post by Scherbina Vladimir
Content-length is a header, why are not you using HttpAddRequestHeaders with
"Context-length: value" and then HttpSendRequest(Ex) ?

Works fine. Thank you. I had to change "Context-length: value" into
"Content-length: value". :)