Method CloseConnection

src/network/network_server.cpp:235–284

}

NetworkRecvStatus ServerNetworkGameSocketHandler::CloseConnection(NetworkRecvStatus status)
{
	assert(status != NETWORK_RECV_STATUS_OKAY);
	/*
	 * Sending a message just before leaving the game calls cs->SendPackets.
	 * This might invoke this function, which means that when we close the
	 * connection after cs->SendPackets we will close an already closed
	 * connection. This handles that case gracefully without having to make
	 * that code any more complex or more aware of the validity of the socket.
	 */
	if (this->IsPendingDeletion() || this->sock == INVALID_SOCKET) return status;

	if (status != NETWORK_RECV_STATUS_CLIENT_QUIT && status != NETWORK_RECV_STATUS_SERVER_ERROR && !this->HasClientQuit() && this->status >= STATUS_AUTHORIZED) {
		/* We did not receive a leave message from this client... */
		std::string client_name = this->GetClientName();

		NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, "", STR_NETWORK_ERROR_CLIENT_CONNECTION_LOST);

		/* Inform other clients of this... strange leaving ;) */
		for (NetworkClientSocket *new_cs : NetworkClientSocket::Iterate()) {
			if (new_cs->status >= STATUS_AUTHORIZED && this != new_cs) {
				new_cs->SendErrorQuit(this->client_id, NETWORK_ERROR_CONNECTION_LOST);
			}
		}
	}

	/* If we were transferring a map to this client, stop the savegame creation
	 * process and queue the next client to receive the map. */
	if (this->status == STATUS_MAP) {
		/* Ensure the saving of the game is stopped too. */
		this->savegame->Destroy();
		this->savegame = nullptr;

		this->CheckNextClientToSendMap(this);
	}

	NetworkAdminClientError(this->client_id, NETWORK_ERROR_CONNECTION_LOST);
	Debug(net, 3, "[{}] Client #{} closed connection", ServerNetworkGameSocketHandler::GetName(), this->client_id);

	/* We just lost one client :( */
	if (this->status >= STATUS_AUTHORIZED) _network_game_info.clients_on--;
	extern uint8_t _network_clients_connected;
	_network_clients_connected--;

	this->SendPackets(true);

	this->DeferDeletion();

	return status;
}

/**
 * Whether an connection is allowed or not at this moment.