mirror of
https://github.com/itay-grudev/SingleApplication.git
synced 2024-11-15 12:15:43 +08:00
0c458ec8c9
The server now acknowledges every received message by sending a \r. By waiting for the acknowledgement, clients should no longer terminate too early, causing bytes getting lost in Qt's internal socket handling. Message handling in the server is simplified because we can now rely on the readyRead signal being raised for every frame. This should finally solve #125 and #121. What remains is to correctly handle data sent using SingleApplication::sendMessage.
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) Itay Grudev 2015 - 2020
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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// W A R N I N G !!!
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// -----------------
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//
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// This file is not part of the SingleApplication API. It is used purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or may even be removed.
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//
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#ifndef SINGLEAPPLICATION_P_H
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#define SINGLEAPPLICATION_P_H
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#include <QtCore/QSharedMemory>
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#include <QtNetwork/QLocalServer>
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#include <QtNetwork/QLocalSocket>
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#include "singleapplication.h"
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struct InstancesInfo {
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bool primary;
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quint32 secondary;
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qint64 primaryPid;
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char primaryUser[128];
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quint16 checksum; // Must be the last field
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};
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struct ConnectionInfo {
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qint64 msgLen = 0;
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quint32 instanceId = 0;
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quint8 stage = 0;
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};
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class SingleApplicationPrivate : public QObject {
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Q_OBJECT
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public:
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enum ConnectionType : quint8 {
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InvalidConnection = 0,
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NewInstance = 1,
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SecondaryInstance = 2,
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Reconnect = 3
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};
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enum ConnectionStage : quint8 {
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StageHeader = 0,
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StageBody = 1,
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StageConnected = 2,
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};
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Q_DECLARE_PUBLIC(SingleApplication)
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SingleApplicationPrivate( SingleApplication *q_ptr );
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~SingleApplicationPrivate() override;
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static QString getUsername();
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void genBlockServerName();
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void initializeMemoryBlock() const;
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void startPrimary();
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void startSecondary();
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bool connectToPrimary( int msecs, ConnectionType connectionType );
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quint16 blockChecksum() const;
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qint64 primaryPid() const;
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QString primaryUser() const;
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void readInitMessageHeader(QLocalSocket *socket);
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void readInitMessageBody(QLocalSocket *socket);
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bool writeConfirmedMessage(int msecs, const QByteArray &msg);
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void writeAck(QLocalSocket *sock);
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static void randomSleep();
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void addAppData(const QString &data);
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QStringList appData() const;
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SingleApplication *q_ptr;
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QSharedMemory *memory;
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QLocalSocket *socket;
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QLocalServer *server;
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quint32 instanceNumber;
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QString blockServerName;
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SingleApplication::Options options;
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QMap<QLocalSocket*, ConnectionInfo> connectionMap;
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QStringList appDataList;
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public Q_SLOTS:
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void slotConnectionEstablished();
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void slotDataAvailable( QLocalSocket*, quint32 );
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void slotClientConnectionClosed( QLocalSocket*, quint32 );
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};
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#endif // SINGLEAPPLICATION_P_H
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