Btukfyl

#include <windows.h>

#include <winhttp.h>

#include <stdio.h>

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

int main()

{   

    static BOOL bRet = FALSE;

    TCHAR szHostName[MAX_PATH] = L"www.google.com";

    HINTERNET hSession = NULL;

    HINTERNET hConnect = NULL;

    HINTERNET hRequest = NULL;

    const TCHAR BROWSER_INFO = L"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 1.1.4322; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";

    const WCHAR *WWIZHTTP_TYPES = { L"Accept: image/gif", L"image/x-xbitmap", L"image/jpeg", L"image/pjpeg", L"application/x-shockwave-flash", L"application/x-ms-application", L"application/x-ms-xbap", L"application/vnd.ms-xpsdocument", L"application/xaml+xml", L"application/msword", L"application/vnd.ms-excel", L"application/x-cabinet-win32-x86", L"application/x-pe-win32-x86", L"application/octet-stream", L"application/x-setupscript", L"*//*", NULL };



    hSession = WinHttpOpen(BROWSER_INFO, WINHTTP_ACCESS_TYPE_NAMED_PROXY, L"172.168.1.196:808", L"<local>", 0);



    if (hSession)

    {

        hConnect = WinHttpConnect(hSession, szHostName, INTERNET_DEFAULT_HTTP_PORT, 0);

    }

    if (hConnect)

    {

        hRequest = WinHttpOpenRequest(hConnect, L"GET", NULL, NULL, WINHTTP_NO_REFERER, WWIZHTTP_TYPES, 0);

    }

    if (hRequest)

    {



        //provide username and password



        WinHttpSetCredentials(hRequest, WINHTTP_AUTH_TARGET_PROXY, WINHTTP_AUTH_SCHEME_BASIC, L"abc", L"abc", NULL);



        // Send a request.

        bRet = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);



        // End the request.         

        if (bRet)

            bRet = WinHttpReceiveResponse(hRequest, NULL);



        if (bRet)

        {

            DWORD dwStatusCode = 0;

            DWORD dwTemp = sizeof(dwStatusCode);

            WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER, NULL, &dwStatusCode, &dwTemp, NULL);

            if ((dwStatusCode >= HTTP_STATUS_CONTINUE) && (dwStatusCode < HTTP_STATUS_BAD_REQUEST))

            {

                bRet = TRUE;

            }

            else

            {

                bRet = FALSE;

            }

        }

        if (bRet == TRUE)

            MessageBox(NULL, L"HIT", L"",0);

    }

    return 0;

}

In above code, return value of dwStatusCode from WinHttpQueryHeaders() is 407 when username-password is set for proxy server. Here
WinHttpSetCredentials() is used to provide username and password but still return value of dwStatusCode is 407. If proxy server is
not having username-password then above code works as per requirement i.e., return value of dwStatusCode is 200. But in case of authentication this code fails.

I am using CCProxy version 8.0 for this sample. Please guide with proper solution.

Please pay attention to the example in this document, If a proxy authentication challenge was responded to, reset those credentials before each SendRequest, because the proxy may require re-authentication after responding.

And if still not working, you may need to use WinHttpSetOption instead of WinHttpSetCredentials to set proxy authentication,
example:

if (!WinHttpSetOption(session, WINHTTP_OPTION_PROXY_USERNAME, proxy_username, proxy_username_len)) 

{

    //do error operation.

}

if (!WinHttpSetOption(session, WINHTTP_OPTION_PROXY_PASSWORD, proxy_password, proxy_password_len)) 

{

    //do error operation.

}