00001 /*---------------------------------------------------------------------------*\ 00002 * OpenSG * 00003 * * 00004 * * 00005 * Copyright (C) 2000-2002 by the OpenSG Forum * 00006 * * 00007 * www.opensg.org * 00008 * * 00009 * contact: dirk@opensg.org, gerrit.voss@vossg.org, jbehr@zgdv.de * 00010 * * 00011 \*---------------------------------------------------------------------------*/ 00012 /*---------------------------------------------------------------------------*\ 00013 * License * 00014 * * 00015 * This library is free software; you can redistribute it and/or modify it * 00016 * under the terms of the GNU Library General Public License as published * 00017 * by the Free Software Foundation, version 2. * 00018 * * 00019 * This library is distributed in the hope that it will be useful, but * 00020 * WITHOUT ANY WARRANTY; without even the implied warranty of * 00021 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00022 * Library General Public License for more details. * 00023 * * 00024 * You should have received a copy of the GNU Library General Public * 00025 * License along with this library; if not, write to the Free Software * 00026 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * 00027 * * 00028 \*---------------------------------------------------------------------------*/ 00029 /*---------------------------------------------------------------------------*\ 00030 * Changes * 00031 * * 00032 * * 00033 * * 00034 * * 00035 * * 00036 * * 00037 \*---------------------------------------------------------------------------*/ 00038 00039 00040 #ifndef _POINTMCASTCONNECTION_H_ 00041 #define _POINTMCASTCONNECTION_H_ 00042 #ifdef __sgi 00043 #pragma once 00044 #endif 00045 00046 //--------------------------------------------------------------------------- 00047 // Includes 00048 //--------------------------------------------------------------------------- 00049 00050 #include <string> 00051 #include <map> 00052 #include <OSGBase.h> 00053 #include <OSGBaseTypes.h> 00054 #include <OSGPointSockConnection.h> 00055 #include <OSGTime.h> 00056 #include <OSGDgramSocket.h> 00057 #include <OSGDgram.h> 00058 #include <OSGDgramQueue.h> 00059 00060 OSG_BEGIN_NAMESPACE 00061 00062 class OSG_BASE_DLLMAPPING PointMCastConnection : public PointSockConnection 00063 { 00064 /*========================== PUBLIC =================================*/ 00065 public: 00066 00067 /*---------------------------------------------------------------------*/ 00071 PointMCastConnection ( void ); 00072 virtual ~PointMCastConnection ( void ); 00073 00075 /*---------------------------------------------------------------------*/ 00079 virtual const ConnectionType *getType (void); 00080 00082 /*---------------------------------------------------------------------*/ 00086 virtual Channel connectGroup(const std::string &address, 00087 Time timeout=-1 ); 00088 virtual void disconnect ( void ); 00089 virtual Channel acceptGroup ( Time timeout=-1 ); 00090 00092 /*---------------------------------------------------------------------*/ 00096 virtual bool wait (Time timeout) throw (ReadError); 00097 00099 /*---------------------------------------------------------------------*/ 00103 virtual Channel selectChannel (Time timeout=-1) throw (ReadError); 00104 00106 /*---------------------------------------------------------------------*/ 00110 static PointConnection *create(void); 00111 00114 /*========================= PROTECTED ===============================*/ 00115 protected: 00116 00117 /*---------------------------------------------------------------------*/ 00121 struct SocketBufferHeader { 00122 UInt32 size; 00123 }; 00124 00126 /*---------------------------------------------------------------------*/ 00130 virtual void read (MemoryHandle mem, UInt32 size); 00131 virtual void readBuffer (void); 00132 00134 /*---------------------------------------------------------------------*/ 00138 DgramSocket _mcastSocket; 00139 DgramSocket _responseSocket; 00140 BaseThread *_recvQueueThread; 00141 bool _recvQueueThreadRunning; 00142 bool _recvQueueThreadStop; 00143 UInt16 _seqNumber; 00144 SocketAddress _mcastAddress; 00145 DgramQueue _queue; 00146 DgramQueue _free; 00147 Lock *_lock; 00148 SocketAddress _sender; 00149 SocketAddress _ackDestination; 00150 Dgram *_lastDgram; 00151 UInt32 _lastDgramPos; 00152 bool _initialized; 00153 std::map<SocketAddress,UInt16> _combineAck; 00154 UInt16 _maxAck; 00155 00158 /*========================== PRIVATE ================================*/ 00159 private: 00160 00161 /*---------------------------------------------------------------------*/ 00165 bool recvNextDgram (Dgram *dgram ); 00166 void combineAck (Dgram *dgram,SocketAddress from); 00167 static void recvQueueThread( void *arg ); 00168 bool recvQueue ( void ); 00169 void initialize ( void ); 00170 00172 /*---------------------------------------------------------------------*/ 00176 static ConnectionType _type; 00177 00180 typedef PointSockConnection Inherited; 00181 00182 // prohibit default functions (move to 'public' if you need one) 00183 PointMCastConnection(const PointMCastConnection &source); 00184 PointMCastConnection& operator =(const PointMCastConnection &source); 00185 }; 00186 00187 //--------------------------------------------------------------------------- 00188 // Exported Types 00189 //--------------------------------------------------------------------------- 00190 00191 // class pointer 00192 00193 typedef PointMCastConnection *PointMCastConnectionP; 00194 00195 OSG_END_NAMESPACE 00196 00197 #define OSG_GROUPMCASTCONNECTION_HEADER_CVSID "@(#)$Id: $" 00198 00199 #endif /* _GROUPMCASTCONNECTION_H_ */
1.4.3