Pascal (Lazarus/Delphi)

Determine if Connected and Logged On

See more FTP Examples

The IsConnected property indicates whether or not the FTP component has a valid TCP/IP connection (and is logged on) to the FTP server. 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;

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 := 'ftp.example.com';
  ftp.Username := 'mylogin';
  ftp.Password := 'mypassword';

  //  Connect and login to the FTP server.
  success := ftp.Connect();
  if (success <> True) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;

  //  ...

  //  At any point in an FTP session, the IsConnected property
  //  can be checked to determine if the component has remained
  //  connected to the FTP server.
  if (ftp.IsConnected = True) then
    begin
      WriteLn('Connected!');
    end
  else
    begin
      WriteLn('Not connected!');
    end;

  //  ...

  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.