/// <summary>
/// Reply to a enum query from freelancer clients with our server information.
/// </summary>
/// <param name="client"></param>
/// <param name="enum_payload"></param>
public void SendCmdEnumResponse(IPEndPoint client, ushort enum_payload)
{
// TODO: we could need it
const bool password = false;
const bool nodpnsvr = true;
var application_data = new byte[0];
FLMsgType.AddAsciiStringLen0(ref application_data,
"1:1:" + server_version + ":-1910309061:" + server_id + ":");
FLMsgType.AddUnicodeStringLen0(ref application_data, server_description);
byte[] pkt = { 0x00, 0x03 };
FLMsgType.AddUInt16(ref pkt, enum_payload);
FLMsgType.AddUInt32(ref pkt, 0x58 + (uint)server_name.Length * 2); // ReplyOffset
FLMsgType.AddUInt32(ref pkt, (uint)application_data.Length); // ReplySize/ResponseSize
FLMsgType.AddUInt32(ref pkt, 0x50); // ApplicationDescSize
FLMsgType.AddUInt32(ref pkt, (password ? 0x80u : 0x00u) | (nodpnsvr ? 0x40u : 0x00u));
// ApplicationDescFlags
FLMsgType.AddUInt32(ref pkt, max_players + 1); // MaxPlayers
FLMsgType.AddUInt32(ref pkt, (uint)dplay_sessions.Count + 1); // CurrentPlayers
FLMsgType.AddUInt32(ref pkt, 0x58); // SessionNameOffset
FLMsgType.AddUInt32(ref pkt, (uint)server_name.Length * 2); // SessionNameSize
FLMsgType.AddUInt32(ref pkt, 0); // PasswordOffset
FLMsgType.AddUInt32(ref pkt, 0); // PasswordSize
FLMsgType.AddUInt32(ref pkt, 0); // ReservedDataOffset
FLMsgType.AddUInt32(ref pkt, 0); // ReservedDataSize
FLMsgType.AddUInt32(ref pkt, 0); // ApplicationReservedDataOffset
FLMsgType.AddUInt32(ref pkt, 0); // ApplicationReservedDataSize
FLMsgType.AddArray(ref pkt, ApplicationInstanceGUID); // ApplicationInstanceGUID
FLMsgType.AddArray(ref pkt, ApplicationGUID); // ApplicationGUID
FLMsgType.AddUnicodeStringLen0(ref pkt, server_name); // SessionName
FLMsgType.AddArray(ref pkt, application_data); // ApplicationData
TxStart(pkt, client);
}