Failed to send Http request based on MFC - file

Question

I'm new to HTTP and MFC. I suppose to upload a binary file to a given URL, by sending PUT request. I'm sure the requesting URL and the header are well formed and the file works well, because I tried them by Postman then get a SUCCESS returned.
But when I try to do this by the following MFC code, it always returns a 403 error. Please help me.
bool UploadFile(LPCTSTR strUrl, LPCTSTR filenameFullpath, CString header)
{
BOOL bResult = FALSE;
DWORD dwType = 0;
CString strServer;
CString strObject;
INTERNET_PORT wPort = 0;
DWORD dwFileLength = 0;
BYTE * pFileBuff = NULL;
CHttpConnection * pHC = NULL;
CHttpFile * pHF = NULL;
CInternetSession cis;
bResult = AfxParseURL(strUrl, dwType, strServer, strObject, wPort);
if (!bResult)
return FALSE;
CFile file;
try
{
// Read the file
if (!file.Open(filenameFullpath, CFile::shareDenyNone | CFile::modeRead))
return FALSE;
dwFileLength = file.GetLength();
if (dwFileLength <= 0)
return FALSE;
pFileBuff = new BYTE[dwFileLength];
memset(pFileBuff, 0, sizeof(BYTE) * dwFileLength);
file.Read(pFileBuff, dwFileLength);
// Set up internet connection
const int nTimeOut = 5000;
cis.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, nTimeOut);
cis.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 2); // Retry once if failed
pHC = cis.GetHttpConnection(strServer, dwType == AFX_INET_SERVICE_HTTP ? NORMAL_CONNECT : SECURE_CONNECT, wPort); // Get a HTTP connection
pHF = pHC->OpenRequest(CHttpConnection::HTTP_VERB_PUT, strObject);//strObject
pHF->AddRequestHeaders(header , HTTP_ADDREQ_FLAG_ADD_IF_NEW);
// I set the header separately instead of passing it as the first parameter of the next call.
// If I don't do so, another error occurs
if (!pHF->SendRequest(NULL, 0, pFileBuff, dwFileLength))
{
delete[]pFileBuff;
pFileBuff = NULL;
pHF->Close();
pHC->Close();
cis.Close();
return FALSE;
}
DWORD dwStateCode = 0;
pHF->QueryInfoStatusCode(dwStateCode);
if (dwStateCode == HTTP_STATUS_OK)
bResult = TRUE;
}
catch (CInternetException * pEx)
{
char sz[256] = "";
pEx->GetErrorMessage(sz, 25);
CString str;
str.Format("InternetException occur!\r\n%s", sz);
AfxMessageBox(str);
}
delete[]pFileBuff;
pFileBuff = NULL;
file.Close();
pHF->Close();
pHC->Close();
cis.Close();
return bResult;
}
And the calling of this function is just something like this:
CHttpClient hc;
hc.UploadFile(csUrl, "E:\\blah blah blah\\blah.tma", csUploadHeader);
while csUrl and csUploadHeader are well formed CString;

Answer 1

I got it! I should give pHF the header items (the key-value pairs) one by one, by calling the AddRequestHeaders() method several times, instead of wrapping and passing them together to pHF.
Then the following codes works very well:
CString sHeader1, sHeader2, sHeader3;
sHeader1.Format(_T("%s : %s"), sKey1, sValue1); // sKey_, sValue_ are strings
sHeader2.Format(_T("%s : %s"), sKey2, sValue2);
sHeader3.Format(_T("%s : %s"), sKey3, sValue3);
pHF->AddRequestHeaders(sHeader1, HTTP_ADDREQ_FLAG_ADD_IF_NEW); // Keep the second paeramter as these
pHF->AddRequestHeaders(sHeader2, HTTP_ADDREQ_FLAG_COALESCE);
pHF->AddRequestHeaders(sHeader3, HTTP_ADDREQ_FLAG_COALESCE);
And a very important notification: the string we pass to AddRequestHeaders() should not have the quotation("") around either the key or the value. In other words, string like "MyKey":"MyValue" have to be modified as MyKey:MyValue before giving to AddRequestHeaders();