src/decoder/gb28181/rtp/RTPTcpReceiver.cpp

#include"RTPTcpReceiver.h"
#include "../common_header.h"
#include "../sip/SipServer.h"
// class TcpRTPSession : public RTPSession
// {
// public:
//     void setReceiver(RTPTcpReceiver* r){
//         tcpReceiver = r;
//     }
// protected:
// 	void OnValidatedRTPPacket(RTPSourceData *srcdat, RTPPacket *rtppack, bool isonprobation, bool *ispackethandled)
// 	{
// 		// printf("SSRC %x Got packet (%d bytes) in OnValidatedRTPPacket from source 0x%04x!\n", GetLocalSSRC(), 
// 		// 	   (int)rtppack->GetPayloadLength(), srcdat->GetSSRC());
//         LOG_DEBUG("SSRC {} Got packet ({} bytes) in OnValidatedRTPPacket from source {}}!\n", GetLocalSSRC(), 
// 			   (int)rtppack->GetPayloadLength(), srcdat->GetSSRC());
//         if(nullptr != tcpReceiver){
//             tcpReceiver->ParsePacket(rtppack);
//         }
// 		DeletePacket(rtppack);
// 		*ispackethandled = true;
// 	}
// 	void OnRTCPSDESItem(RTPSourceData *srcdat, RTCPSDESPacket::ItemType t, const void *itemdata, size_t itemlength)
// 	{
// 		char msg[1024];
// 		memset(msg, 0, sizeof(msg));
// 		if (itemlength >= sizeof(msg))
// 			itemlength = sizeof(msg)-1;
// 		memcpy(msg, itemdata, itemlength);
// 		// printf("SSRC %x Received SDES item (%d): %s from SSRC %x\n", GetLocalSSRC(), (int)t, msg, srcdat->GetSSRC());
//         LOG_DEBUG("SSRC {} Received SDES item ({}): {} from SSRC {}\n", GetLocalSSRC(), (int)t, msg, srcdat->GetSSRC());
// 	}
// private:
//     RTPTcpReceiver* tcpReceiver{nullptr};
// };
class MyTCPTransmitter : public RTPTCPTransmitter
{
public:
    void setReceiver(RTPTcpReceiver* r){
        tcpReceiver = r;
    }
public:
	MyTCPTransmitter() : RTPTCPTransmitter(0){ }
	void OnSendError(SocketType sock)
	{
        LOG_ERROR("Error sending over socket {}, removing destination", sock);
		DeleteDestination(RTPTCPAddress(sock));
        if(nullptr != tcpReceiver && !tcpReceiver->isClosing()){
            tcpReceiver->ReConnect();
        }
	}
	
	void OnReceiveError(SocketType sock)
	{
        LOG_ERROR("Error receiving over socket {}, removing destination", sock);
		DeleteDestination(RTPTCPAddress(sock));
	}
private:
    RTPTcpReceiver* tcpReceiver{nullptr};
};
static int rtp_revc_thread_(void* param)
{
	if (!param)
	{
		return -1;
	}
	RTPTcpReceiver* self = (RTPTcpReceiver*)param;
	return self->OnRtpRecv();
}
static int listen_finish_thread_(void* param)
{
	if (!param)
	{
		return -1;
	}
	RTPTcpReceiver* self = (RTPTcpReceiver*)param;
	return self->ListenFinish();
}
RTPTcpReceiver::RTPTcpReceiver()
: m_bRtpExit(false)
, m_bOpened(false)
, m_idleCount(-1)
, m_noDataCount(-1)
, m_nListener(-1)
, m_bAccepted(false)
, m_bClosing(false)
{
    m_rtpSessionPtr = new RTPSession();
    m_pSessparams = new RTPSessionParams();
    m_pTrans = new MyTCPTransmitter();
}
RTPTcpReceiver::~RTPTcpReceiver(){
    if (IsOpened())
		Close();
    if(m_rtpSessionPtr != nullptr){
        delete m_rtpSessionPtr;
        m_rtpSessionPtr = nullptr;
    }
    if(m_pSessparams != nullptr){
        delete m_pSessparams;
        m_pSessparams = nullptr;
    }
    if(m_pTrans != nullptr){
        delete m_pTrans;
        m_pTrans = nullptr;
    }
}
bool RTPTcpReceiver::Open(string channel_id){
    m_SipChannelId = channel_id;
    int rtpPort = allocRtpPort();
	if (rtpPort < 0) {
		return false;
	}
	m_rtp_port = rtpPort;
    if(0 != initSession(m_rtp_port)){
        return false;
    }
    
    m_bOpened = true;
    LOG_INFO("[{}] started.", m_SipChannelId);
    return true;
}
bool RTPTcpReceiver::IsOpened(){
    LOG_INFO("[{}] isopng:{} ", m_SipChannelId, m_bOpened);
    return m_bOpened;
}
void RTPTcpReceiver::Close(){
    m_bRtpExit = true;
    if(m_listenFinishThread.joinable()){
        m_listenFinishThread.join();
    }
}
void RTPTcpReceiver::close_task(){
    m_bRtpExit = true;
    m_bClosing = true;
    m_bAccepted = true;
    LOG_DEBUG("[{}] 1.", m_SipChannelId);
    
    // rtp接收线程退出
    if (m_rtpThread.joinable())
    {
        m_rtpThread.join();
    }
    LOG_DEBUG("[{}] 2.", m_SipChannelId);
	ClosePsThread();
    m_bOpened = false;
    
    LOG_INFO("[{}] closed.", m_SipChannelId);
}
bool RTPTcpReceiver::isClosing(){
    return m_bClosing;
}
int RTPTcpReceiver::initSession(int localPort){
    m_nListener = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP);
	if (m_nListener < 0)
	{
		return  -1;
	}
 
	sockaddr_in   serverAddr;
	memset(&serverAddr, 0, sizeof(sockaddr_in));
	serverAddr.sin_family = AF_INET;
	serverAddr.sin_port = htons(localPort);
	serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
	int  nRet = bind(m_nListener, (sockaddr*)&serverAddr, sizeof(serverAddr));
	if (nRet == -1)
	{
        LOG_ERROR("[{}] 绑定端口失败: {}", m_SipChannelId, localPort);
		return  -1;
	}
	if (listen(m_nListener, 1) == -1)
	{
        LOG_ERROR("[{}] listen 失败", m_SipChannelId);
		return  -1;
	}
	int  nPackSize = 45678;
	m_pSessparams->SetProbationType(RTPSources::NoProbation);
	m_pSessparams->SetOwnTimestampUnit(90000.0 / 25.0);
	m_pSessparams->SetMaximumPacketSize(nPackSize + 64);
	int status = m_pTrans->Init(false);
	status = m_pTrans->Create(65535, NULL);
    m_pTrans->setReceiver(this);
	status = m_rtpSessionPtr->Create(*m_pSessparams, m_pTrans);
	if (status < 0)
	{
        // 若status = -59 ,需运行 export LOGNAME=root ，见 https://blog.csdn.net/m0_37876242/article/details/128588162
        LOG_ERROR("[{}] create session error: {}", m_SipChannelId, status);
		return -1;
	}
    m_rtpThread = std::thread(rtp_revc_thread_, this);
    m_listenFinishThread = std::thread(listen_finish_thread_, this);
    InitPS();
    bool bRet = RequestStream();
    if (!bRet)
    {
        LOG_INFO("[{}] 请求流失败！", m_SipChannelId);
        return -1;
    }
    LOG_INFO("[{}] 初始化成功, congratulations !!!", m_SipChannelId);
    return 0;
}
int RTPTcpReceiver::OnRtpRecv()
{
    if(nullptr == m_rtpSessionPtr){
        return -1;
    }
    LOG_INFO("[{}] OnRtpRecv started, m_nListener : {}", m_SipChannelId, m_nListener);
    sockaddr_in   clientAddr;
	int  nLen = sizeof(sockaddr_in);
	SocketType nServer = -1;
    
    LOG_INFO("[{}] Poll started.", m_SipChannelId);
    int reconn_times = 0;
    int reaccept_times = 0;
    bool bReconn = false;
    while(!m_bRtpExit){
        while(!m_bAccepted){
            if(m_bRtpExit){
                goto end_flag;
            }
            
            while (!bReconn){
                if(m_bRtpExit){
                    goto end_flag;
                }
                reconn_times++;
                if(reconn_times > 10){
                    // 10次请求都失败，结束任务
                    m_bRtpExit = true;
                    goto end_flag;
                }
                LOG_DEBUG("[{}] RequestStream...", m_SipChannelId);
                bReconn = RequestStream();
                if (bReconn){
                    LOG_DEBUG("[{}] RequestStream, True", m_SipChannelId);
                   continue;
                }
                LOG_DEBUG("[{}] RequestStream, False", m_SipChannelId);
                
                std::this_thread::sleep_for(std::chrono::seconds(5));
            }
            
            LOG_DEBUG("[{}] accepting...", m_SipChannelId);
            nServer = accept(m_nListener, (sockaddr*)&clientAddr, (socklen_t * ) &nLen);
            if (-1 == nServer){
                reaccept_times++;
                LOG_DEBUG("[{}] reaccept_times =  {}", m_SipChannelId, reaccept_times);
                if(reaccept_times > 600){
                    LOG_DEBUG("[{}] reaccept_times > 600", m_SipChannelId);
                    bReconn = false;
                    reaccept_times = 0;
                }
                std::this_thread::sleep_for(std::chrono::milliseconds(100));
                continue;
            }
            LOG_DEBUG("[{}] accept success", m_SipChannelId);
            m_rtpSessionPtr->AddDestination(RTPTCPAddress(nServer));
            m_bAccepted = true;
            bReconn = false;
            reconn_times = 0;
            reaccept_times = 0;
            LOG_INFO("[{}] nServer={}", m_SipChannelId, nServer);
            break;
        }
        m_rtpSessionPtr->BeginDataAccess();
        if (m_rtpSessionPtr->GotoFirstSourceWithData())
        {
            do
            {
                RTPPacket *pack;
                
                while ((pack = m_rtpSessionPtr->GetNextPacket()) != NULL)
                {
                    // LOG_DEBUG("[{}] time: {} ", m_SipChannelId, UtilTools::get_cur_time_ms());
                    ParsePacket(pack);
                    
                    m_rtpSessionPtr->DeletePacket(pack);
                }
            } while (m_rtpSessionPtr->GotoNextSourceWithData());
        }
        
        m_rtpSessionPtr->EndDataAccess();
        m_rtpSessionPtr->Poll();
		std::this_thread::sleep_for(std::chrono::milliseconds(10));
    }
end_flag:
    m_rtpSessionPtr->Destroy();
    if(nServer > 0){
        close(nServer);
    }
    if(m_nListener > 0){
        close(m_nListener);
    }
    LOG_INFO("[{}] OnRtpRecv exited.", m_SipChannelId);
    return 0;
}
int RTPTcpReceiver::ListenFinish(){
    while(!m_bRtpExit){
        std::this_thread::sleep_for(std::chrono::seconds(3));
    }
    close_task();
}
bool RTPTcpReceiver::ReConnect(){
    m_bAccepted = false;
}
bool RTPTcpReceiver::RequestStream(){
    SipServer* pServer = SipServer::getInstance();
	int ret = -1;
	if (pServer){
		ret = pServer->RequestInvite_TCP_a(m_SipChannelId.c_str(), m_rtp_port);
	}
	return (ret > 0) ;
}