rtp.h

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// Copyright (C) 1999-2005 Open Source Telecom Corporation.
// Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
// Copyright (C) 2015 Cherokees of Idaho.
//
// 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; either version 2 of the License, or
// (at your option) any later version.
//
// 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 Lesser General Public License
// along with GNU ccRTP.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// This exception applies only to the code released under the name GNU
// ccRTP.  If you copy code from other releases into a copy of GNU
// ccRTP, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU ccRTP, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//

#ifndef CCXX_RTP_RTP_H_
#define CCXX_RTP_RTP_H_

#include <ccrtp/cqueue.h>
#include <ccrtp/channel.h>

NAMESPACE_COMMONCPP

    template <class RTPDataChannel = DualRTPUDPIPv4Channel,
          class RTCPChannel = DualRTPUDPIPv4Channel,
          class ServiceQueue = AVPQueue>
    class __EXPORT TRTPSessionBase : public ServiceQueue
    {
    public:
        TRTPSessionBase(const InetHostAddress& ia, tpport_t dataPort,
                tpport_t controlPort, uint32 membersSize,
                RTPApplication& app) :
            ServiceQueue(membersSize,app)
            { build(ia,dataPort,controlPort); }

        TRTPSessionBase(uint32 ssrc,
                const InetHostAddress& ia,
                tpport_t dataPort, tpport_t controlPort,
                uint32 membersSize, RTPApplication& app):
            ServiceQueue(ssrc,membersSize,app)
            { build(ia,dataPort,controlPort); }

        TRTPSessionBase(const InetMcastAddress& ia, tpport_t dataPort,
                tpport_t controlPort, uint32 membersSize,
                RTPApplication& app, uint32 iface) :
            ServiceQueue(membersSize,app)
            { build(ia,dataPort,controlPort,iface); }

        TRTPSessionBase(uint32 ssrc,
                const InetMcastAddress& ia, tpport_t dataPort,
                tpport_t controlPort, uint32 membersSize,
                RTPApplication& app, uint32 iface) :
            ServiceQueue(ssrc,membersSize,app)
            { build(ia,dataPort,controlPort,iface); }

        virtual size_t dispatchBYE(const std::string &str)
            {
                return QueueRTCPManager::dispatchBYE(str);
            }

        inline Socket::Error
        setMcastTTL(uint8 ttl)
            {
                Socket::Error error = dso->setMulticast(true);
                if ( error ) return error;
                error = dso->setTimeToLive(ttl);
                if ( error ) return error;
                error = cso->setMulticast(true);
                if ( error ) return error;
                return cso->setTimeToLive(ttl);
            }

        inline virtual
        ~TRTPSessionBase()
            {
                endSocket();
            }

        inline RTPDataChannel *getDSO(void)
            {return dso;}

    protected:
        inline bool
        isPendingData(microtimeout_t timeout)
            { return dso->isPendingRecv(timeout); }

        InetHostAddress
        getDataSender(tpport_t *port = NULL) const
            { return dso->getSender(port); }

        inline size_t
        getNextDataPacketSize() const
            { return dso->getNextPacketSize(); }

        inline size_t
        recvData(unsigned char* buffer, size_t len,
             InetHostAddress& na, tpport_t& tp)
            { na = dso->getSender(tp); return dso->recv(buffer, len); }

        inline void
        setDataPeer(const InetAddress &host, tpport_t port)
            { dso->setPeer(host,port); }


        inline size_t
        sendData(const unsigned char* const buffer, size_t len)
            { return dso->send(buffer, len); }

        inline SOCKET getDataRecvSocket() const
            { return dso->getRecvSocket(); }

        inline bool
        isPendingControl(microtimeout_t timeout)
            { return cso->isPendingRecv(timeout); }

        InetHostAddress
        getControlSender(tpport_t *port = NULL) const
            { return cso->getSender(port); }

        inline size_t
        recvControl(unsigned char *buffer, size_t len,
                InetHostAddress& na, tpport_t& tp)
            { na = cso->getSender(tp); return cso->recv(buffer,len); }

        inline void
        setControlPeer(const InetAddress &host, tpport_t port)
            { cso->setPeer(host,port); }

        inline size_t
        sendControl(const unsigned char* const buffer, size_t len)
            { return cso->send(buffer,len); }

        inline SOCKET getControlRecvSocket() const
            { return cso->getRecvSocket(); }

        inline Socket::Error
        joinGroup(const InetMcastAddress& ia, uint32 iface)
            {
                Socket::Error error  = dso->setMulticast(true);
                if ( error ) return error;
                error = dso->join(ia,iface);
                if ( error ) return error;
                error = cso->setMulticast(true);
                if ( error ) {
                    dso->drop(ia);
                    return error;
                }
                error = cso->join(ia,iface);
                if ( error ) {
                    dso->drop(ia);
                    return error;
                }
                return Socket::errSuccess;
            }

        inline Socket::Error
        leaveGroup(const InetMcastAddress& ia)
            {
                Socket::Error error = dso->setMulticast(false);
                if ( error ) return error;
                error = dso->leaveGroup(ia);
                if ( error ) return error;
                error = cso->setMulticast(false);
                if ( error ) return error;
                return cso->leaveGroup(ia);
            }

        inline void
        endSocket()
            {
                if (dso) {
                    dso->endSocket();
                    delete dso;
                }
                dso = NULL;
                if (cso) {
                    cso->endSocket();
                    delete cso;
                }
                cso = NULL;
            }

    private:
        void
        build(const InetHostAddress& ia, tpport_t dataPort,
              tpport_t controlPort)
            {
                if ( 0 == controlPort ) {
                    dataBasePort = even_port(dataPort);
                    controlBasePort = dataBasePort + 1;
                } else {
                    dataBasePort = dataPort;
                    controlBasePort = controlPort;
                }
                dso = new RTPDataChannel(ia,dataBasePort);
                cso = new RTCPChannel(ia,controlBasePort);
            }

        void
        build(const InetMcastAddress& ia, tpport_t dataPort,
              tpport_t controlPort, uint32 iface)
            {
                if ( 0 == controlPort ) {
                    dataBasePort = even_port(dataPort);
                    controlBasePort = dataBasePort + 1;
                } else {
                    dataBasePort = dataPort;
                    controlBasePort = controlPort;
                }
                dso = new RTPDataChannel(InetHostAddress("0.0.0.0"),dataBasePort);
                cso = new RTCPChannel(InetHostAddress("0.0.0.0"),controlBasePort);
                joinGroup(ia,iface);
            }

        inline tpport_t
        odd_port(tpport_t port)
            { return (port & 0x01)? (port) : (port - 1); }

        inline tpport_t
        even_port(tpport_t port)
            { return (port & 0x01)? (port - 1) : (port); }

        tpport_t dataBasePort;
        tpport_t controlBasePort;

    protected:
        RTPDataChannel* dso;
        RTCPChannel* cso;
        friend class RTPSessionBaseHandler;
    };

    template
    <class RTPDataChannel = DualRTPUDPIPv4Channel,
     class RTCPChannel = DualRTPUDPIPv4Channel,
     class ServiceQueue = AVPQueue>
    class __EXPORT SingleThreadRTPSession :
        protected Thread,
        public TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>
    {
    public:
        SingleThreadRTPSession(const InetHostAddress& ia,
                       tpport_t dataPort = DefaultRTPDataPort,
                       tpport_t controlPort = 0,
                       int pri = 0,
                       uint32 memberssize =
                       MembershipBookkeeping::defaultMembersHashSize,
                       RTPApplication& app = defaultApplication()
#if defined(_MSC_VER) && _MSC_VER >= 1300
            );
#else
        ):
        Thread(pri),
        TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>
        (ia,dataPort,controlPort,memberssize,app)
        { }
#endif

        SingleThreadRTPSession(uint32 ssrc, const InetHostAddress& ia,
                               tpport_t dataPort = DefaultRTPDataPort,
                               tpport_t controlPort = 0,
                               int pri = 0,
                               uint32 memberssize =
                               MembershipBookkeeping::defaultMembersHashSize,
                               RTPApplication& app = defaultApplication()
#if defined(_MSC_VER) && _MSC_VER >= 1300
        );
#else
    ):
    Thread(pri),
    TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>
    (ssrc, ia,dataPort,controlPort,memberssize,app)
{ }
#endif

SingleThreadRTPSession(const InetMcastAddress& ia,
               tpport_t dataPort = DefaultRTPDataPort,
               tpport_t controlPort = 0,
               int pri = 0,
               uint32 memberssize =
               MembershipBookkeeping::defaultMembersHashSize,
               RTPApplication& app = defaultApplication(),
               uint32 iface = 0
#if defined(_MSC_VER) && _MSC_VER >= 1300
           );
#else
        ):
        Thread(pri),
        TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>
        (ia,dataPort,controlPort,memberssize,app,iface)
        { }
#endif

SingleThreadRTPSession(uint32 ssrc, const InetMcastAddress& ia,
               tpport_t dataPort = DefaultRTPDataPort,
               tpport_t controlPort = 0,
               int pri = 0,
               uint32 memberssize =
               MembershipBookkeeping::defaultMembersHashSize,
               RTPApplication& app = defaultApplication(),
               uint32 iface = 0
#if defined(_MSC_VER) && _MSC_VER >= 1300
                      );
#else
                ):
                Thread(pri),
                TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>
                (ssrc,ia,dataPort,controlPort,memberssize,app,iface)
{ }
#endif


~SingleThreadRTPSession()
{
    if (isRunning()) {
        disableStack(); Thread::join();
    }
}

#if defined(_MSC_VER) && _MSC_VER >= 1300
virtual void startRunning();
#else

void
startRunning()
{ enableStack(); Thread::start(); }
#endif


protected:
inline void disableStack(void)
{TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::disableStack();}

inline void enableStack(void)
{TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::enableStack();}

inline microtimeout_t getSchedulingTimeout(void)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::getSchedulingTimeout();}

inline void controlReceptionService(void)
{TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::controlReceptionService();}

inline void controlTransmissionService(void)
{TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::controlTransmissionService();}

inline timeval getRTCPCheckInterval(void)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::getRTCPCheckInterval();}

inline size_t dispatchDataPacket(void)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::dispatchDataPacket();}

#if defined(_MSC_VER) && _MSC_VER >= 1300
virtual void run(void);

virtual void timerTick(void);

virtual bool isPendingData(microtimeout_t timeout);
#else

virtual void timerTick(void)
{return;}

virtual bool isPendingData(microtimeout_t timeout)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::isPendingData(timeout);}

virtual void run(void)
{
    microtimeout_t timeout = 0;
    while ( ServiceQueue::isActive() ) {
        if ( timeout < 1000 ){ // !(timeout/1000)
            timeout = getSchedulingTimeout();
        }
        controlReceptionService();
        controlTransmissionService();
        microtimeout_t maxWait =
            timeval2microtimeout(getRTCPCheckInterval());
        // make sure the scheduling timeout is
        // <= the check interval for RTCP
        // packets
        timeout = (timeout > maxWait)? maxWait : timeout;
        if ( timeout < 1000 ) { // !(timeout/1000)
            dispatchDataPacket();
            timerTick();
        } else {
            if ( isPendingData(timeout/1000) ) {
                                if (ServiceQueue::isActive()) { // take in only if active
                                    takeInDataPacket();
                                }
            }
            timeout = 0;
        }
    }
    dispatchBYE("GNU ccRTP stack finishing.");
//        Thread::exit();
}

#endif

inline size_t takeInDataPacket(void)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::takeInDataPacket();}

inline size_t dispatchBYE(const std::string &str)
{return TRTPSessionBase<RTPDataChannel,RTCPChannel,ServiceQueue>::dispatchBYE(str);}
};

typedef SingleThreadRTPSession<> RTPSession;

typedef RTPSession RTPSocket;

typedef SingleThreadRTPSession<SymmetricRTPChannel,
                   SymmetricRTPChannel> SymmetricRTPSession;

#ifdef  CCXX_IPV6

template <class RTPDataChannel = DualRTPUDPIPv6Channel,
      class RTCPChannel = DualRTPUDPIPv6Channel,
      class ServiceQueue = AVPQueue>
class __EXPORT TRTPSessionBaseIPV6 : public ServiceQueue
{
public:
TRTPSessionBaseIPV6(const IPV6Host& ia, tpport_t dataPort,
    tpport_t controlPort, uint32 membersSize,
    RTPApplication& app) :
    ServiceQueue(membersSize,app)
{ build(ia,dataPort,controlPort); }

    TRTPSessionBaseIPV6(uint32 ssrc,
                const IPV6Host& ia,
                tpport_t dataPort, tpport_t controlPort,
                uint32 membersSize, RTPApplication& app):
        ServiceQueue(ssrc,membersSize,app)
        { build(ia,dataPort,controlPort); }

    TRTPSessionBaseIPV6(const IPV6Multicast& ia, tpport_t dataPort,
                tpport_t controlPort, uint32 membersSize,
                RTPApplication& app, uint32 iface) :
        ServiceQueue(membersSize,app)
        { build(ia,dataPort,controlPort,iface); }

    TRTPSessionBaseIPV6(uint32 ssrc,
                const IPV6Multicast& ia, tpport_t dataPort,
                tpport_t controlPort, uint32 membersSize,
                RTPApplication& app, uint32 iface) :
        ServiceQueue(ssrc,membersSize,app)
        { build(ia,dataPort,controlPort,iface); }

    virtual size_t dispatchBYE(const std::string &str)
        {
            return QueueRTCPManager::dispatchBYE(str);
        }

    inline virtual
    ~TRTPSessionBaseIPV6()
        {
            endSocket();
        }

    inline RTPDataChannel *getDSO(void)
        {return dso;}

protected:
    inline bool
    isPendingData(microtimeout_t timeout)
        { return dso->isPendingRecv(timeout); }

    inline IPV6Host
    getDataSender(tpport_t *port = NULL) const
        { return dso->getSender(port); }

    inline size_t
    getNextDataPacketSize() const
        { return dso->getNextPacketSize(); }

    inline size_t
    recvData(unsigned char* buffer, size_t len,
         IPV6Host& na, tpport_t& tp)
        { na = dso->getSender(tp); return dso->recv(buffer, len); }

        inline void
        setDataPeerIPV6(const IPV6Host &host, tpport_t port)
        { dso->setPeer(host,port); }

    inline size_t
    sendDataIPV6(const unsigned char* const buffer, size_t len)
        { return dso->send(buffer, len); }

    inline SOCKET getDataRecvSocket() const
        { return dso->getRecvSocket(); }

        inline bool
    isPendingControl(microtimeout_t timeout)
        { return cso->isPendingRecv(timeout); }

    inline IPV6Host
    getControlSender(tpport_t *port = NULL) const
        { return cso->getSender(port); }

        inline size_t
    recvControl(unsigned char *buffer, size_t len,
            IPV6Host& na, tpport_t& tp)
        { na = cso->getSender(tp); return cso->recv(buffer,len); }

        inline void
        setControlPeerIPV6(const IPV6Host &host, tpport_t port)
        { cso->setPeer(host,port); }

        inline size_t
    sendControl(const unsigned char* const buffer, size_t len)
        { return cso->send(buffer,len); }

    inline SOCKET getControlRecvSocket() const
        { return cso->getRecvSocket(); }

    inline void
    endSocket()
        {
            dso->endSocket();
            cso->endSocket();
            if (dso) delete dso;
            dso = NULL;
            if (cso) delete cso;
            cso = NULL;
        }

private:
    void
    build(const IPV6Host& ia, tpport_t dataPort,
          tpport_t controlPort)
        {
            if ( 0 == controlPort ) {
                dataBasePort = even_port(dataPort);
                controlBasePort = dataBasePort + 1;
            } else {
                dataBasePort = dataPort;
                controlBasePort = controlPort;
            }
            dso = new RTPDataChannel(ia,dataBasePort);
            cso = new RTCPChannel(ia,controlBasePort);
        }

    void
    build(const IPV6Multicast& ia, tpport_t dataPort,
          tpport_t controlPort, uint32 iface)
        {
            if ( 0 == controlPort ) {
                dataBasePort = even_port(dataPort);
                controlBasePort = dataBasePort + 1;
            } else {
                dataBasePort = dataPort;
                controlBasePort = controlPort;
            }
            dso = new RTPDataChannel(IPV6Host("0.0.0.0"),dataBasePort);
            cso = new RTCPChannel(IPV6Host("0.0.0.0"),controlBasePort);
            joinGroup(ia,iface);
        }

    inline Socket::Error
    joinGroup(const IPV6Multicast& ia, uint32 iface)
        {
            Socket::Error error  = dso->setMulticast(true);
            if ( error ) return error;
            error = dso->join(ia,iface);
            if ( error ) return error;
            error = cso->setMulticast(true);
            if ( error ) {
                dso->drop(ia);
                return error;
            }
            error = cso->join(ia,iface);
            if ( error ) {
                dso->drop(ia);
                return error;
            }
            return Socket::errSuccess;
        }

    inline Socket::Error
    leaveGroup(const IPV6Multicast& ia)
        {
            Socket::Error error = dso->setMulticast(false);
            if ( error ) return error;
            error = dso->leaveGroup(ia);
            if ( error ) return error;
            error = cso->setMulticast(false);
            if ( error ) return error;
            return cso->leaveGroup(ia);
        }

    inline Socket::Error
    setMcastTTL(uint8 ttl)
        {
            Socket::Error error = dso->setMulticast(true);
            if ( error ) return error;
            error = dso->setTimeToLive(ttl);
            if ( error ) return error;
            error = cso->setMulticast(true);
            if ( error ) return error;
            return cso->setTimeToLive(ttl);
        }

    inline tpport_t
    odd_port(tpport_t port)
        { return (port & 0x01)? (port) : (port - 1); }

    inline tpport_t
    even_port(tpport_t port)
        { return (port & 0x01)? (port - 1) : (port); }

    tpport_t dataBasePort;
    tpport_t controlBasePort;

protected:
    RTPDataChannel* dso;
    RTCPChannel* cso;
    friend class RTPSessionBaseHandler;
};

template
<class RTPDataChannel = DualRTPUDPIPv6Channel,
 class RTCPChannel = DualRTPUDPIPv6Channel,
 class ServiceQueue = AVPQueue>
class __EXPORT SingleThreadRTPSessionIPV6 :
    protected Thread,
    public TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>
{
public:
    SingleThreadRTPSessionIPV6(const IPV6Host& ia,
                   tpport_t dataPort = DefaultRTPDataPort,
                   tpport_t controlPort = 0,
                   int pri = 0,
                   uint32 memberssize =
                   MembershipBookkeeping::defaultMembersHashSize,
                   RTPApplication& app = defaultApplication()
#if defined(_MSC_VER) && _MSC_VER >= 1300
        );
#else
    ):
    Thread(pri),
    TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>
    (ia,dataPort,controlPort,memberssize,app)
{ }
#endif

SingleThreadRTPSessionIPV6(const IPV6Multicast& ia,
               tpport_t dataPort = DefaultRTPDataPort,
               tpport_t controlPort = 0,
               int pri = 0,
               uint32 memberssize =
               MembershipBookkeeping::defaultMembersHashSize,
               RTPApplication& app = defaultApplication(),
               uint32 iface = 0
#if defined(_MSC_VER) && _MSC_VER >= 1300
    );
#else
        ):
        Thread(pri),
        TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>
        (ia,dataPort,controlPort,memberssize,app,iface)
{ }
#endif

~SingleThreadRTPSessionIPV6()
{
    if (isRunning()) {
        disableStack(); Thread::join();
    }
}

#if defined(_MSC_VER) && _MSC_VER >= 1300
virtual void startRunning();
#else

void
startRunning()
{ enableStack(); Thread::start(); }
#endif


protected:
inline void enableStack(void)
{TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::enableStack();}

inline void disableStack(void)
{TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::disableStack();}

inline microtimeout_t getSchedulingTimeout(void)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::getSchedulingTimeout();}

inline void controlReceptionService(void)
{TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::controlReceptionService();}

inline void controlTransmissionService(void)
{TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::controlTransmissionService();}

inline timeval getRTCPCheckInterval(void)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::getRTCPCheckInterval();}

inline size_t dispatchDataPacket(void)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::dispatchDataPacket();}

#if defined(_MSC_VER) && _MSC_VER >= 1300
virtual void run(void);

virtual void timerTick(void);

virtual bool isPendingData(microtimeout_t timeout);
#else

virtual void timerTick(void)
{return;}

virtual bool isPendingData(microtimeout_t timeout)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::isPendingData(timeout);}

virtual void run(void)
{
    microtimeout_t timeout = 0;
    while ( ServiceQueue::isActive() ) {
        if ( timeout < 1000 ){ // !(timeout/1000)
            timeout = getSchedulingTimeout();
        }
        controlReceptionService();
        controlTransmissionService();
        microtimeout_t maxWait =
            timeval2microtimeout(getRTCPCheckInterval());
        // make sure the scheduling timeout is
        // <= the check interval for RTCP
        // packets
        timeout = (timeout > maxWait)? maxWait : timeout;
        if ( timeout < 1000 ) { // !(timeout/1000)
            dispatchDataPacket();
            timerTick();
        } else {
            if ( isPendingData(timeout/1000) ) {
                takeInDataPacket();
            }
            timeout = 0;
        }
    }
    dispatchBYE("GNU ccRTP stack finishing.");
        Thread::exit();
}

#endif

inline size_t takeInDataPacket(void)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::takeInDataPacket();}

inline size_t dispatchBYE(const std::string &str)
{return TRTPSessionBaseIPV6<RTPDataChannel,RTCPChannel,ServiceQueue>::dispatchBYE(str);}
};

typedef SingleThreadRTPSessionIPV6<> RTPSessionIPV6;

typedef RTPSessionIPV6 RTPSocketIPV6;

 typedef SingleThreadRTPSessionIPV6<SymmetricRTPChannelIPV6,
                    SymmetricRTPChannelIPV6> SymmetricRTPSessionIPV6;


#endif
 // sessions

END_NAMESPACE

#endif  //CCXX_RTP_RTP_H_

---