(C++) FTPS with Mutual TLS Authentication (TLS Client Certificate)

Demonstrates how to do mutual TLS authentication (using a client certificate from a .pfx/.p12).

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#include <CkFtp2.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkFtp2 ftp;

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Port(21);

    // If using implicit TLS, you probably want port 990..
    ftp.put_Port(990);

    // Set this to false for implicit TLS, otherwise set to true for explicit TLS (where port is typically 21).
    ftp.put_AuthTls(false);

    // Set this to true for implicit TLS, otherwise set to false.
    ftp.put_Ssl(true);

    CkCert cert;
    bool success = cert.LoadPfxFile("qa_data/pfx/example.pfx","pfx_password");
    if (success == false) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    // Use this certificate for our TLS mutually authenticated connection:
    success = ftp.SetSslClientCert(cert);
    if (success == false) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    // Establish the TLS connection with the FTP server.
    success = ftp.ConnectOnly();
    if (success == false) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    // If a login is required, then login with the FTP account login/password.
    ftp.put_Username("myLogin");
    ftp.put_Password("myPassword");
    success = ftp.LoginAfterConnectOnly();
    if (success == false) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    // Do whatever you're doing to do ...
    // upload files, download files, etc...

    // .....
    // .....

    success = ftp.Disconnect();
    }