Tracing HTTP Redirects

Example to trace through HTTP redirects.

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// Needs #include <CkHttp.h>

    CkString strOut;

    CkHttp http;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    const char * url;
    const char * html;
    long status;

    url = "http://www.planyourweddingonline.co.za/";

    //  The FollowRedirects property controls whether redirects
    //  are automatically followed.  The default behavior is to
    //  automatically follow redirects.

    //  Explicitly set FollowRedirects so that redirects are NOT automatically taken:
    http.put_FollowRedirects(false);

    //  Send the HTTP GET and return the content in a string.
    html = http.quickGetStr(url);
    if (html == 0 ) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
    }

    status = http.get_LastStatus();
    strOut.append("HTTP Response Status: ");
    strOut.appendInt(status);
    strOut.append("\r\n");

    //  The FinalRedirectUrl property will contain the redirect URL
    //  If FollowRedirects was equal to true, then all of the
    //  intermediate redirects (if any) would be followed until
    //  there were no more redirects.  However, because
    //  FollowRedirects is not true, FinalRedirectUrl contains
    //  the next redirect URL.
    strOut.append("Redirect URL: ");
    strOut.append(http.finalRedirectUrl());
    strOut.append("\r\n");

    long loopCount;
    loopCount = 0;

    while ((status == 302)) {
        url = http.finalRedirectUrl();
        html = http.quickGetStr(url);
        if (html == 0 ) {
            strOut.append(http.lastErrorText());
            strOut.append("\r\n");
            break;
        }

        status = http.get_LastStatus();
        strOut.append("Redirect URL: ");
        strOut.append(http.finalRedirectUrl());
        strOut.append("\r\n");

        //  You may wish to check that if FinalRedirectUrl
        //  equals the URL just retrieved.  If so, then break out of the
        //  loop.  (This check is omitted in this example.)

        //  Instead, this example will prevent infinite loops by
        //  keeping a loopCount and only allows following a max
        //  of 10 redirects:
        loopCount = loopCount + 1;
        if (loopCount > 10) {
            break;
        }

    }


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());