MMDVMHost-Private/NXDNKenwoodNetwork.h
SASANO Takayoshi 79b3eaa57a replace SSRC source from IPv4 address to random number
Previous implementation uses SSRC as IPv4 address that is same behaviour
of Kenwood's NXDN repeater.

RFC 3350 RTP protocol recommends SSRC uses random number.
So I use MT19937 random number generator instead of IP address.

And if this is no problem, I will do two changes.

- replace rand() in DMRNetwork.cpp and DStarNetwork.cpp to MT19937
- remove getLocalAddress() in UDPSocket.cpp
2020-07-01 19:48:07 +09:00

99 lines
3.3 KiB
C++

/*
* Copyright (C) 2009-2014,2016,2018,2020 by Jonathan Naylor G4KLX
*
* 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef NXDNKenwoodNetwork_H
#define NXDNKenwoodNetwork_H
#include "NXDNNetwork.h"
#include "UDPSocket.h"
#include "Timer.h"
#include <cstdint>
#include <string>
#include <random>
class CNXDNKenwoodNetwork : public INXDNNetwork {
public:
CNXDNKenwoodNetwork(const std::string& localAddress, unsigned int localPort, const std::string& gwyAddress, unsigned int gwyPort, bool debug);
virtual ~CNXDNKenwoodNetwork();
virtual bool open();
virtual void enable(bool enabled);
virtual bool write(const unsigned char* data, NXDN_NETWORK_MESSAGE_TYPE type);
virtual bool read(unsigned char* data);
virtual void reset();
virtual void close();
virtual void clock(unsigned int ms);
private:
CUDPSocket m_rtpSocket;
CUDPSocket m_rtcpSocket;
in_addr m_address;
unsigned int m_rtcpPort;
unsigned int m_rtpPort;
bool m_enabled;
bool m_headerSeen;
bool m_seen1;
bool m_seen2;
bool m_seen3;
bool m_seen4;
unsigned char* m_sacch;
uint8_t m_sessionId;
uint16_t m_seqNo;
unsigned int m_ssrc;
bool m_debug;
uint32_t m_startSecs;
uint32_t m_startUSecs;
CTimer m_rtcpTimer;
CTimer m_hangTimer;
unsigned char m_hangType;
unsigned short m_hangSrc;
unsigned short m_hangDst;
std::mt19937 m_random;
bool processIcomVoiceHeader(const unsigned char* data);
bool processIcomVoiceData(const unsigned char* data);
bool processIcomDataHeader(const unsigned char* data);
bool processIcomDataData(const unsigned char* data);
bool processIcomDataTrailer(const unsigned char* data);
bool processKenwoodVoiceHeader(unsigned char* data);
bool processKenwoodVoiceData(unsigned char* data);
bool processKenwoodVoiceLateEntry(unsigned char* data);
bool processKenwoodData(unsigned char* data);
bool writeRTPVoiceHeader(const unsigned char* data);
bool writeRTPVoiceData(const unsigned char* data);
bool writeRTPVoiceTrailer(const unsigned char* data);
bool writeRTPDataHeader(const unsigned char* data);
bool writeRTPDataData(const unsigned char* data);
bool writeRTPDataTrailer(const unsigned char* data);
bool writeRTCPStart();
bool writeRTCPPing();
bool writeRTCPHang(unsigned char type, unsigned short src, unsigned short dst);
bool writeRTCPHang();
unsigned int readRTP(unsigned char* data);
unsigned int readRTCP(unsigned char* data);
unsigned long getTimeStamp() const;
};
#endif