(.NET Core 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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// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Ftp2 ftp = new Chilkat.Ftp2();

ftp.Hostname = "ftp.example.com";
ftp.Port = 21;

// If using implicit TLS, you probably want port 990..
ftp.Port = 990;

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

// Set this to true for implicit TLS, otherwise set to false.
ftp.Ssl = true;

Chilkat.Cert cert = new Chilkat.Cert();
bool success = cert.LoadPfxFile("qa_data/pfx/example.pfx","pfx_password");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Use this certificate for our TLS mutually authenticated connection:
success = ftp.SetSslClientCert(cert);
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Establish the TLS connection with the FTP server.
success = ftp.ConnectOnly();
if (success == false) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

// If a login is required, then login with the FTP account login/password.
ftp.Username = "myLogin";
ftp.Password = "myPassword";
success = ftp.LoginAfterConnectOnly();
if (success == false) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

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

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

success = ftp.Disconnect();