Query an Gameserver

[Flodding]

Dies hier funktioniert bei mir:

Delphi-Quellcode:

procedure Get_A2S_INFO;
var
  request: TInfoRequest;
  response: TInfoResponse;
  buffer: TBufferArray;
  i: Integer;
  CheckTime: TDateTime;
begin
  request.RequestHeader := -1;
  request.PacketHeader := 'T';
  request.Payload := 'Source Engine Query'; // Von mir aus auch mit einer Konstante oder einem Ressourcestring
  request.Payload[19] := #0;

  form4.udp1.BlockMode := bmNonBlocking;
  form4.udp1.RemoteHost:= form4.edit1.Text;
  form4.udp1.RemotePort:= form4.edit2.Text;
  form4.udp1.Open;

  if form4.udp1.Connected then
    begin
    form4.Udp1.SendBuf(request, SizeOf(TInfoRequest));
    form4.udp1.WaitForData(250);
    form4.Udp1.ReceiveBuf(buffer, SizeOf(buffer));
    i := 0;
    Move(buffer[i], response.ResponseHeader, SizeOf(response.ResponseHeader)); inc(i, SizeOf(response.ResponseHeader));
    Move(buffer[i], response.PacketHeader, SizeOf(response.PacketHeader)); inc(i, SizeOf(response.PacketHeader));
    Move(buffer[i], response.Protocol, SizeOf(response.Protocol)); inc(i, SizeOf(response.Protocol));

    if response.ResponseHeader = -1 then
      begin
      response.Name := GetString(buffer, i);
      response.Map := GetString(buffer, i);
      response.Folder := GetString(buffer, i);
      response.Game := GetString(buffer, i);
      Move(buffer[i], response.ID, SizeOf(response.ID)); inc(i, SizeOf(response.ID));
      Move(buffer[i], response.Players, SizeOf(response.Players)); inc(i, SizeOf(response.Players));
      Move(buffer[i], response.MaxPlayers, SizeOf(response.MaxPlayers)); inc(i, SizeOf(response.MaxPlayers));
      Move(buffer[i], response.Bots, SizeOf(response.Bots)); inc(i, SizeOf(response.Bots));
      Move(buffer[i], response.ServerType, SizeOf(response.ServerType)); inc(i, SizeOf(response.ServerType));
      Move(buffer[i], response.Environment, SizeOf(response.Environment)); inc(i, SizeOf(response.Environment));
      Move(buffer[i], response.Visibility, SizeOf(response.Visibility)); inc(i, SizeOf(response.Visibility));
      Move(buffer[i], response.VAC, SizeOf(response.VAC)); inc(i, SizeOf(response.VAC));
      response.Version := GetString(buffer, i);
      Move(buffer[i], response.EDF, SizeOf(response.EDF)); inc(i, SizeOf(response.EDF));
      Move(buffer[i], response.EDFPort, SizeOf(response.EDFPort)); inc(i, SizeOf(response.EDFPort));
      Move(buffer[i], response.EDFSteamID, SizeOf(response.EDFSteamID)); inc(i, SizeOf(response.EDFSteamID));
      Move(buffer[i], response.EDFSpecPort, SizeOf(response.EDFSpecPort)); inc(i, SizeOf(response.EDFSpecPort));
      //response.EDFSpecName := GetString(buffer, i);
      response.EDFKeywords := GetString(buffer, i);
      Move(buffer[i], response.EDFGameID, SizeOf(response.EDFGameID)); inc(i, SizeOf(response.EDFGameID));

      form4.lblServerHeader.Caption :=  chr(response.PacketHeader);
      form4.lblServerProtocol.Caption :=  IntToStr(response.Protocol);
      form4.lblServerName.Caption := response.Name;
      form4.lblServerMap.Caption := response.Map;
      form4.lblServerFolder.Caption := response.Folder;
      form4.lblServerGame.Caption := response.Game;
      form4.lblServerID.Caption := inttostr(response.ID);
      form4.lblServerPlayers.Caption := IntToStr(response.Players);
      form4.lblServerMaxPlayers.Caption := IntToStr(response.MaxPlayers);
      form4.lblServerBots.Caption := IntToStr(response.Bots);
      form4.lblServerType.Caption := chr(response.ServerType);
      form4.lblServerEnvironment.Caption := chr(response.Environment);
      form4.lblServerVisibility.Caption := inttostr(response.Visibility);
      form4.lblServerVAC.Caption := IntToStr(response.VAC);
      form4.lblServerVersion.Caption := response.Version;
      end
      else
      form4.lblServerName.Caption := 'Server nicht erreichbar';
  end;
end;

Das Error Event:

Delphi-Quellcode:

procedure TForm4.udp1Error(Sender: TObject; SocketError: Integer);
begin
//showmessage('Could not connect. The server you are trying to query might be down');
//udp1.Active:= false;
end;