Pascal (Lazarus/Delphi)

Automatically Determine FTP Proxy Method

See more FTP Examples

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

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Ftp2;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  ftp: TFtp2;
  pMethod: Integer;

begin
  success := False;

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

  ftp := TFtp2.Create;

  ftp.Hostname := 'www.example-code.com';
  ftp.Username := 'example-code.com';
  ftp.Password := '****';

  ftp.ProxyHostname := 'ftp.myproxyhost.com';
  ftp.ProxyPort := 21;
  //  Note: Your FTP Proxy server may or may not require authentication.
  ftp.ProxyUsername := 'myProxyUsername';
  ftp.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.

  pMethod := ftp.DetermineProxyMethod();
  WriteLn(pMethod);

  success := ftp.Disconnect();


  ftp.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.