C / C++ / MFC

#include <windows.h>
#include <Winhttp.h>
#include <stdio.h>

#pragma comment(lib,"Winhttp.lib")

void WinHttpAuthSample()
{
  DWORD dwStatusCode = 0;
  DWORD dwLastStatus = 0;
  DWORD dwSize = sizeof(DWORD);
  BOOL  bResults = FALSE;
  BOOL  bDone = FALSE;

  DWORD dwProxyAuthScheme = 0;
  HINTERNET  hSession = NULL, 
             hConnect = NULL,
             hRequest = NULL;

  hSession = WinHttpOpen( L"WinHTTP Example/1.0",  
                          WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
                          WINHTTP_NO_PROXY_NAME, 
                          WINHTTP_NO_PROXY_BYPASS, 0 );

  INTERNET_PORT nPort = INTERNET_DEFAULT_HTTPS_PORT;

  if( hSession )
    hConnect = WinHttpConnect( hSession, 
                               L"connect.microsoft.com", 
                               nPort, 0 );

  if( hConnect )
    hRequest = WinHttpOpenRequest( hConnect, 
                                   L"GET", 
                                   L"/dashboard",
                                   NULL, 
                                   WINHTTP_NO_REFERER, 
                                   WINHTTP_DEFAULT_ACCEPT_TYPES,
                                   WINHTTP_FLAG_SECURE);
  if( hRequest == NULL )
    bDone = TRUE;

  while( !bDone )
  {
    if( dwProxyAuthScheme != 0 )
      bResults = WinHttpSetCredentials( hRequest, 
                                        WINHTTP_AUTH_TARGET_PROXY, 
                                        dwProxyAuthScheme, 
                                        L"username@hotmail.com",
                                        L"passport password",
                                        NULL );
    bResults = WinHttpSendRequest( hRequest,
                                   WINHTTP_NO_ADDITIONAL_HEADERS,
                                   0,
                                   WINHTTP_NO_REQUEST_DATA,
                                   0, 
                                   0, 
                                   0 );

    if( bResults )
      bResults = WinHttpReceiveResponse( hRequest, NULL );

    if( !bResults && GetLastError( ) == ERROR_WINHTTP_RESEND_REQUEST)
        continue;

    if( bResults ) 
      bResults = WinHttpQueryHeaders( hRequest, 
                                      WINHTTP_QUERY_STATUS_CODE |
                                      WINHTTP_QUERY_FLAG_NUMBER,
                                      NULL, 
                                      &dwStatusCode, 
                                      &dwSize, 
                                      NULL );

    if( bResults )
    {
      switch( dwStatusCode )
      {
        case 200: 

		 printf( "The resource was successfully retrieved.\n" );
         bDone = TRUE;
         break;

        case 401:
         
          printf(" The server requires authentication. Sending credentials...\n" );

          bDone = TRUE;

          break;

        case 407:
         
          printf( "The proxy requires authentication.  Sending credentials...\n" );

          bDone = TRUE;
          break;

        default:
         
          printf("Error. Status code %d returned.\n", dwStatusCode);
          bDone = TRUE;
      }
    }

    dwLastStatus = dwStatusCode;

    if( !bResults ) 
        bDone = TRUE;
  }

  if( !bResults )
  {
    DWORD dwLastError = GetLastError( );
    printf( "Error %d has occurred.\n", dwLastError );
  }

  // Close any open handles.
  if( hRequest ) WinHttpCloseHandle( hRequest );
  if( hConnect ) WinHttpCloseHandle( hConnect );
  if( hSession ) WinHttpCloseHandle( hSession );
}

int main(int argc, char* argv[])
{
         WinHttpAuthSample();
         return 0;
}