unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls, IdTCPServer, IdComponent, IdContext;

type
  TMain = class(TForm)
    RichEdit1: TRichEdit;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private-Deklarationen }
    procedure OnConnect(AContext: TIdContext);
  public
    { Public-Deklarationen }
    Server: TIdTCPServer;
    procedure Log(Text: String; Farbe: Byte = 0);
  end;

var
  Main: TMain;

implementation

{$R *.dfm}

{ TForm1 }

procedure TMain.FormCreate(Sender: TObject);
begin
  ReportMemoryLeaksOnShutdown := True;

  Server := TIdTCPServer.Create(self);
  Server.DefaultPort := 1307;
  Server.OnConnect := OnConnect;
end;

procedure TMain.FormDestroy(Sender: TObject);
begin
  if (Server.Active) then
    Server.Active := False;
  Server.Free;
end;

procedure TMain.Log(Text: String; Farbe: Byte = 0);
var
  aFont: TFont;
begin
  aFont := TFont.Create;
  aFont.Name := 'Courier';
  aFont.Size := 10;
  case Farbe of
    0: aFont.color := clSilver;
    1: aFont.Color := clWhite;
    2: aFont.Color := clRed;
    3: aFont.color := clYellow;
    4: aFont.color := clLime;
    5: aFont.color := clAqua;
  end;
  RichEdit1.SelAttributes.Assign(aFont);
  RichEdit1.Lines.add(Format('[%s]: %s',[TimeToStr(now),Text]));
  aFont.Free;
end;

procedure TMain.OnConnect(AContext: TIdContext);
begin
  with aContext.Binding do
  begin
    Log('Incoming connection from '+PeerIP);
    Log('Checking IP...');
    Log('Connection Accepted from '+PeerIP);
  end;
end;

end.