upnptasknotify.h

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// Program Name: upnptasknotify.h
// Created     : Oct. 24, 2005
//
// Purpose     : UPnp Task to send Notification messages
//
// Copyright (c) 2005 David Blain <dblain@mythtv.org>
//
// Licensed under the GPL v2 or later, see LICENSE for details
//
#ifndef UPNPTASKNOTIFY_H
#define UPNPTASKNOTIFY_H
 
#include <chrono>
#include <cstdint>
 
// Qt headers
#include <QString>
#include <QMutex>
#include <QUdpSocket>
 
#include "taskqueue.h"
#include "upnpdevice.h"
 
enum UPnpNotifyNTS : std::uint8_t
{
    NTS_alive   = 0,
    NTS_byebye  = 1
};
 
class UPnpNotifyTask : public Task
{
    protected:
        QMutex          m_mutex;
 
        QString         m_sMasterIP;
        int             m_nServicePort;
        std::chrono::seconds m_nMaxAge  {1h};
 
        UPnpNotifyNTS   m_eNTS          {NTS_alive};
 
        // Destructor protected to force use of Release Method
        ~UPnpNotifyTask() override = default;
 
        void ProcessDevice(QUdpSocket& socket, const UPnpDevice& device);
        void SendNotifyMsg(QUdpSocket& socket, const QString& sNT, const QString& sUDN);
 
    public:
        explicit UPnpNotifyTask( int nServicePort );
 
        QString Name() override { return( "Notify" ); } // Task
        void Execute( TaskQueue *pQueue ) override; // Task
 
        QString GetNTSString()
        {
            m_mutex.lock();
            UPnpNotifyNTS nts = m_eNTS;
            m_mutex.unlock();
 
            switch( nts )
            {
                case NTS_alive : return( "ssdp:alive"  );
                case NTS_byebye: return( "ssdp:byebye" );
            }
            return( "unknown" );
        }
 
        UPnpNotifyNTS GetNTS()
        {
            m_mutex.lock();
            UPnpNotifyNTS nts = m_eNTS;
            m_mutex.unlock();
 
            return( nts );
        }
 
        void SetNTS( UPnpNotifyNTS nts)
        {
            m_mutex.lock();
            m_eNTS = nts;
            m_mutex.unlock();
        }
};
 
#endif // UPNPTASKNOTIFY_H