unit clientunit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ScktComp;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    ClientSocket1: TClientSocket;
    Button1: TButton;
    Memo1: TMemo;
    Label1: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button1Click(Sender: TObject);
    procedure ClientSocket1Error(Sender: TObject; Socket: TCustomWinSocket;
      ErrorEvent: TErrorEvent; var ErrorCode: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
 ClientSocket1.Port := 23;

 ClientSocket1.Host := '127.0.0.1';
 ClientSocket1.Active := True;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
 ClientSocket1.Active := False;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
 if ClientSocket1.Active then
   ClientSocket1.Socket.SendText(Edit1.Text);
end;

procedure TForm1.ClientSocket1Error(Sender: TObject;
  Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
  var ErrorCode: Integer);
begin
ShowMessage('Connection failure... too bad');
end;

end.