c++httpwininet

WinInet HttpQuery Info returning Invalid Status Codes

I am working on a program that needs to check the existence of a page before it loads (so nothing too exotic).

Everything is working OK, but I cannot get HttpQueryInfo to return a valid status code for a page. The status code returned is: 1875378224

Code producing the problem:

DWORD headerBuffSize = sizeof(DWORD);
DWORD statusCode;
//Check existance of page (for 404 error)
if(!HttpQueryInfo(hRequestHandle,
                  HTTP_QUERY_STATUS_CODE,
                  &statusCode,
                  &headerBuffSize,
                  NULL))
    return 4;

if(statusCode == HTTP_STATUS_NOT_FOUND)
    cout << "We got a 404 error" << endl;

cout << "Got Status code: " << statusCode << endl; //1875378224 everywhere
cout << "404 status code: " << HTTP_STATUS_NOT_FOUND << endl; //What it should be getting

I am not sure what to make of it; I have compared my own code to several examples online, and it looks like it should work, although I may have just made a stupid mistake.

Thanks!

Solution

  • The information retrieved from the response header by HttpQueryInfo is always a text string. 

    int statusCode;
char responseText[256]; // change to wchar_t for unicode
DWORD responseTextSize = sizeof(responseText);

//Check existance of page (for 404 error)
if(!HttpQueryInfo(hRequestHandle,
                  HTTP_QUERY_STATUS_CODE,
                  &responseText,
                  &responseTextSize,
                  NULL))
    return 4;
statusCode = atoi(responseText);