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unit UChat;

interface

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

type
  TForm1 = class(TForm)
    ListView1: TListView;
    Edit1: TEdit;
    Button1: TButton;
    Label1: TLabel;
    Server: TSimpleTCPServer;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
if (StrToInt(Edit1.Text)<65535) or (StrToInt(Edit1.Text)>1024) then begin
Server.Port:=StrToInt(Edit1.Text);
Server.Active:=true;
end
else
begin
Showmessage('Du musst einen  Port zwischen 1024 und 65535 angeben')
end;
end;

end.                    

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procedure TSimpleTCPServer.SetPort(const Value: Integer);
begin
  FServer.DefaultPort:=Value;
end;                    

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if Server=NIL then
  showMessage('Diese Variable ist nicht initialisiert!');                    

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IOHandler.ReadStream(Stream,ByteCount);
IOHandler.Write(Stream,ByteCount);