1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:
72:
73:
74:
75:
76:
77:
78:
79:
80:
81:
82:
83:
84:
85:
86:
87:
88:
89:
90:
91:
92:
93:
94:
95:
96:
97:
98:
99:
100:
101:
102:
103:
104:
105:
106:
107:
108:
109:
110:
111:
112:
113:
114:
115:
116:

program ChatServer;

{$APPTYPE CONSOLE}

uses
  SysUtils,
  ScktComp,
  Classes,
  Windows;

type
  TMainThread = class(TThread)
  public
    procedure Run;
  end;

  TServerThread = class(TThread)
    ServerSocket: TServerSocket;
    Port: Word;
    constructor Create;
    destructor Destroy;
    //procedure OnServerAccept(Sender: TObject; Socket: TCustomWinSocket);
    procedure OnClientRead(Sender: TObject; Socket: TCustomWinSocket);
    procedure OnClientConnect(Sender: TObject; Socket: TCustomWinSocket);
    procedure OnClientDisconnect(Sender: TObject; Socket: TCustomWinSocket);
    procedure OnServerShutDown(SendText: String);
  end;

var
  MainThread: TMainThread;
  ServerThread: TServerThread;
  i: Integer;
  Msg: TMsg;

{Mainthread}

procedure TMainThread.Run;
begin
Write(#7);
ReadLn;
end;

{ServerThread}

constructor TServerThread.Create;
begin
inherited Create(True);
ServerSocket:=TServerSocket.Create(nil);
end;

destructor TServerThread.Destroy;
begin
ServerSocket.Destroy;
inherited Destroy;
end;

procedure TServerThread.OnClientConnect(Sender: TObject; Socket: TCustomWinSocket);
begin
writeln('Client hat verbunden');
Socket.SendText('Moin');
end;

procedure TServerThread.OnClientRead(Sender: TObject; Socket: TCustomWinSocket);
begin
writeln(Socket.ReceiveText);
 for i := 0 to ServerSocket.Socket.ActiveConnections-1 do
    ServerSocket.Socket.Connections[i].SendText(Socket.ReceiveText);
end;

procedure TServerThread.OnClientDisconnect(Sender: TObject; Socket: TCustomWinSocket);
begin
writeln('Client disconnected');
end;

procedure TServerThread.OnServerShutDown(SendText: String);
begin
writeln(SendText);
end;

{Program}

begin
ServerThread := TServerThread.Create;
with ServerThread do
begin
//ServerSocket.OnAccept:=ServerThread.OnServerAccept;
ServerSocket.OnClientConnect:=ServerThread.OnClientConnect;
ServerSocket.OnClientDisconnect:=ServerThread.OnClientDisconnect;
ServerSocket.OnClientRead:=ServerThread.OnClientRead;
end;

WriteLn('ChatServer');
WriteLn;
Write('Port: ');
ReadLn(ServerThread.Port);

ServerThread.ServerSocket.Active:=False;
ServerThread.ServerSocket.Port:=ServerThread.Port;

try
ServerThread.ServerSocket.Open;//Hier ist vermutlich der Fehler
except
ServerThread.ServerSocket.Active:=False;
WriteLn('ERROR!');
end;

WriteLn('Server is running.');
while GetMessage(Msg, 0, 0, 0) do
begin
  TranslateMessage(Msg);
  DispatchMessage(Msg);
end;
ReadLn;

ServerThread.Destroy;
end.                    

1:
2:
3:
4:
5:
6:
7:
8:

ChatServer

Port: 12345
Application tried to create a window, but no driver could be loaded.
Make sure that your X server is running and that $DISPLAY is set correctly.
Application tried to create a window, but no driver could be loaded.
Make sure that your X server is running and that $DISPLAY is set correctly.
Server is running.                    

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:

uses IdTcpClient;
[...]
var
  ClientSkt: TIdTcpClient;

[...]
begin
  ClientSkt := TIdTcpClient.Create(self); // Glaube, dass das mit (Self) ist amsonsten halt ohne
end;

[...]
begin
  if Assigned(ClientSkt) then
    ClientSkt.Free;  // Zum schluss, falls vorhanden -> wieder killn (OnDestroy)
end;