QTfrontend/net/tcpBase.h
author unc0rr
Thu, 01 Nov 2012 14:31:53 +0400
branch0.9.18
changeset 7916 be11c26a3a0b
parent 7289 835bb2852579
child 8069 bb7671829935
permissions -rw-r--r--
Fix 0.9.18 desync: CreateNetGame() slot creates signal-slot connections from hwnet to hwgame. The problem is that this slot is called asynchronously using queued connection, and hwnet could send some signals to hwgame before hwgame object is created and connected. Changed this to direct connection. Also changed connections to hwgame object to queued, but this is unrelated. Sorry, it is frontend patch. Maybe a little delay on server side could help, but not much, as tcp packets could get glued on client's side, and that greately depends on pc and internet connection performance. Frontend should be reworked to be safe for queued connections, as it is extemely dangerous to have a mix of queued/direct connections.

/*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2006-2007 Igor Ulyanov <iulyanov@gmail.com>
 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
 *
 * This program 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 of the License
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#ifndef _TCPBASE_INCLUDED
#define _TCPBASE_INCLUDED

#include <QObject>
#include <QTcpServer>
#include <QTcpSocket>
#include <QByteArray>
#include <QString>
#include <QDir>
#include <QProcess>
#include <QPointer>

#include <QImage>

#define MAXMSGCHARS 255

class TCPBase : public QObject
{
        Q_OBJECT

    public:
        TCPBase(bool demoMode);
        virtual ~TCPBase();

    signals:
        void isReadyNow();

    protected:
        quint16 ipc_port;

        void Start();

        QByteArray readbuffer;

        QByteArray toSendBuf;
        QByteArray demo;

        void SendIPC(const QByteArray & buf);
        void RawSendIPC(const QByteArray & buf);

        virtual QStringList getArguments()=0;
        virtual void onClientRead();
        virtual void onClientDisconnect();
        virtual void SendToClientFirst();

    private:
        static QPointer<QTcpServer> IPCServer;

        bool m_isDemoMode;
        void RealStart();
        QPointer<QTcpSocket> IPCSocket;

    private slots:
        void NewConnection();
        void ClientDisconnect();
        void ClientRead();
        void StartProcessError(QProcess::ProcessError error);

        void tcpServerReady();
};

#endif // _TCPBASE_INCLUDED