network_query.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef NETWORK_QUERY_H
#define NETWORK_QUERY_H
 
#include "network_internal.h"

class QueryNetworkGameSocketHandler : public NetworkGameSocketHandler {
private:
  static std::vector<std::unique_ptr<QueryNetworkGameSocketHandler>> queries; 
  std::string connection_string; 
 
protected:
  NetworkRecvStatus ReceiveServerFull(Packet &p) override;
  NetworkRecvStatus ReceiveServerBanned(Packet &p) override;
  NetworkRecvStatus ReceiveServerError(Packet &p) override;
  NetworkRecvStatus ReceiveServerGameInfo(Packet &p) override;
 
  NetworkRecvStatus SendGameInfo();
 
  bool CheckConnection();
  void Send();
  bool Receive();
 
public:
  QueryNetworkGameSocketHandler(SOCKET s, std::string_view connection_string) : NetworkGameSocketHandler(s), connection_string(connection_string) {}

  static void QueryServer(SOCKET s, std::string_view connection_string)
  {
    auto query = std::make_unique<QueryNetworkGameSocketHandler>(s, connection_string);
    query->SendGameInfo();
 
    QueryNetworkGameSocketHandler::queries.push_back(std::move(query));
  }
 
  static void SendReceive();
 
  NetworkRecvStatus CloseConnection(NetworkRecvStatus status) override;
};
 
#endif /* NETWORK_QUERY_H */