(Delphi DLL) FTP Enable/Disable TLS 1.3

Chilkat started supporting TLS 1.3 in version 9.5.0.82. For versions 9.5.0.82 and 9.5.0.83, TLS 1.3 was not enabled by default. A program could enable TLS 1.3 by including the "EnableTls13" keyword in the UncommonOptions property.

In Chilkat v9.5.0.84 and later, TLS 1.3 is enabled by default. TLS 1.3 can be disabled by including the "DisableTls13" keyword in UncommonOptions. This will cause TLS 1.2 to be used instead.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Ftp2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: HCkFtp2;

begin
ftp := CkFtp2_Create();

// In Chilkat v9.5.0.82 and .83, TLS 1.3 is not enabled by default. 
// To enable TLS 1.3, add the keyword "EnableTls13" to the UncommonOptions property.
CkFtp2_putUncommonOptions(ftp,'EnableTls13');

// In Chilkat v9.5.0.84 and later, TLS 1.3 is enabled by default.
// If disabling TLS 1.3 is needed (for some unanticipated reason), then add the keyword
// "DisableTls13" to UncommonOptions
CkFtp2_putUncommonOptions(ftp,'DisableTls13');

CkFtp2_Dispose(ftp);

end;