Automatically Determine FTP Proxy Method

Tries each of the five possible ProxyMethod settings and returns the value (1-5) of the ProxyMethod that succeeded.

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#include <CkFtp2.h>

void ChilkatSample(void)
    {
    CkFtp2 ftp;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = ftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("%s\n",ftp.lastErrorText());
        return;
    }

    ftp.put_Hostname("www.example-code.com");
    ftp.put_Username("example-code.com");
    ftp.put_Password("****");

    ftp.put_ProxyHostname("ftp.myproxyhost.com");
    ftp.put_ProxyPort(21);
    //  Note: Your FTP Proxy server may or may not require authentication.
    ftp.put_ProxyUsername("myProxyUsername");
    ftp.put_ProxyPassword("myProxyPassword");

    //  The ProxyMethod should be an integer value between 1 and 5.
    //  If you know your FTP proxy server's authentication scheme,
    //  you may set it directly.  To determine the ProxyMethod,
    //  call DetermineProxyMethod.  A return value of -1 indicates a failure.
    //  A return value of 0 indicates that nothing worked.
    //  A return value of 1-5 indicates the ProxyMethod that was
    //  successful, and this should be the value used for the ProxyMethod
    //  property.

    int pMethod;
    pMethod = ftp.DetermineProxyMethod();
    printf("%d\n",pMethod);

    ftp.Disconnect();
    }