ZLMediaKit/src/Rtsp/RtspSession.h

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/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
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* Use of this source code is governed by MIT license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
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*/
#ifndef SESSION_RTSPSESSION_H_
#define SESSION_RTSPSESSION_H_
#include <set>
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#include <vector>
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#include <unordered_set>
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#include <unordered_map>
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#include "Util/util.h"
#include "Util/logger.h"
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#include "Common/config.h"
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#include "Network/TcpSession.h"
#include "Player/PlayerBase.h"
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#include "RtpMultiCaster.h"
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#include "RtspMediaSource.h"
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#include "RtspSplitter.h"
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#include "RtpReceiver.h"
#include "RtspMediaSourceImp.h"
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#include "Common/Stamp.h"
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using namespace std;
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using namespace toolkit;
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namespace mediakit {
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class RtspSession;
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class BufferRtp : public Buffer{
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public:
typedef std::shared_ptr<BufferRtp> Ptr;
BufferRtp(const RtpPacket::Ptr & pkt,uint32_t offset = 0 ):_rtp(pkt),_offset(offset){}
virtual ~BufferRtp(){}
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char *data() const override {
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return (char *)_rtp->data() + _offset;
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}
uint32_t size() const override {
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return _rtp->size() - _offset;
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}
private:
RtpPacket::Ptr _rtp;
uint32_t _offset;
};
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class RtspSession: public TcpSession, public RtspSplitter, public RtpReceiver , public MediaSourceEvent{
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public:
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typedef std::shared_ptr<RtspSession> Ptr;
typedef std::function<void(const string &realm)> onGetRealm;
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//encrypted为true是则表明是md5加密的密码否则是明文密码
//在请求明文密码时如果提供md5密码者则会导致认证失败
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typedef std::function<void(bool encrypted,const string &pwd_or_md5)> onAuth;
RtspSession(const Socket::Ptr &pSock);
virtual ~RtspSession();
////TcpSession override////
void onRecv(const Buffer::Ptr &pBuf) override;
void onError(const SockException &err) override;
void onManager() override;
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protected:
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//RtspSplitter override
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/**
* rtsp包回调sdp等content数据
* @param parser rtsp包
*/
void onWholeRtspPacket(Parser &parser) override;
/**
* rtp包回调
* @param data
* @param len
*/
void onRtpPacket(const char *data,uint64_t len) override;
/**
* rtsp头中获取Content长度
* @param parser
* @return
*/
int64_t getContentLength(Parser &parser) override;
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//RtpReceiver override
void onRtpSorted(const RtpPacket::Ptr &rtppt, int trackidx) override;
//MediaSourceEvent override
bool close(MediaSource &sender,bool force) override ;
int totalReaderCount(MediaSource &sender) override;
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//TcpSession override
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int send(const Buffer::Ptr &pkt) override;
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/**
* RTCP包回调
* @param iTrackidx
* @param track
* @param pucData
* @param uiLen
*/
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virtual void onRtcpPacket(int iTrackidx, SdpTrack::Ptr &track, unsigned char *pucData, unsigned int uiLen);
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private:
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//处理options方法,获取服务器能力
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void handleReq_Options(const Parser &parser);
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//处理describe方法请求服务器rtsp sdp信息
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void handleReq_Describe(const Parser &parser);
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//处理ANNOUNCE方法请求推流附带sdp
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void handleReq_ANNOUNCE(const Parser &parser);
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//处理record方法开始推流
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void handleReq_RECORD(const Parser &parser);
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//处理setup方法播放和推流协商rtp传输方式用
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void handleReq_Setup(const Parser &parser);
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//处理play方法开始或恢复播放
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void handleReq_Play(const Parser &parser);
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//处理pause方法暂停播放
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void handleReq_Pause(const Parser &parser);
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//处理teardown方法结束播放
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void handleReq_Teardown(const Parser &parser);
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//处理Get方法,rtp over http才用到
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void handleReq_Get(const Parser &parser);
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//处理Post方法rtp over http才用到
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void handleReq_Post(const Parser &parser);
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//处理SET_PARAMETER、GET_PARAMETER方法一般用于心跳
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void handleReq_SET_PARAMETER(const Parser &parser);
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//rtsp资源未找到
void inline send_StreamNotFound();
//不支持的传输模式
void inline send_UnsupportedTransport();
//会话id错误
void inline send_SessionNotFound();
//一般rtsp服务器打开端口失败时触发
void inline send_NotAcceptable();
//ssrc转字符串
inline string printSSRC(uint32_t ui32Ssrc);
//获取track下标
inline int getTrackIndexByTrackType(TrackType type);
inline int getTrackIndexByControlSuffix(const string &controlSuffix);
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inline int getTrackIndexByInterleaved(int interleaved);
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//一般用于接收udp打洞包也用于rtsp推流
inline void onRcvPeerUdpData(int intervaled, const Buffer::Ptr &pBuf, const struct sockaddr &addr);
//配合onRcvPeerUdpData使用
inline void startListenPeerUdpData(int iTrackIdx);
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////rtsp专有认证相关////
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//认证成功
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void onAuthSuccess();
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//认证失败
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void onAuthFailed(const string &realm,const string &why,bool close = true);
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//开始走rtsp专有认证流程
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void onAuthUser(const string &realm,const string &authorization);
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//校验base64方式的认证加密
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void onAuthBasic(const string &realm,const string &strBase64);
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//校验md5方式的认证加密
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void onAuthDigest(const string &realm,const string &strMd5);
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//发送rtp给客户端
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void sendRtpPacket(const RtpPacket::Ptr &pkt);
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//回复客户端
bool sendRtspResponse(const string &res_code,const std::initializer_list<string> &header, const string &sdp = "" , const char *protocol = "RTSP/1.0");
bool sendRtspResponse(const string &res_code,const StrCaseMap &header = StrCaseMap(), const string &sdp = "",const char *protocol = "RTSP/1.0");
//服务器发送rtcp
void sendSenderReport(bool overTcp,int iTrackIndex);
//设置socket标志
void setSocketFlags();
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private:
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//用于判断客户端是否超时
Ticker _ticker;
//收到的seq回复时一致
int _iCseq = 0;
//ContentBase
string _strContentBase;
//Session号
string _strSession;
//是否第一次播放,第一次播放需要鉴权,第二次播放属于暂停恢复
bool _bFirstPlay = true;
//url解析后保存的相关信息
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MediaInfo _mediaInfo;
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//rtsp播放器绑定的直播源
std::weak_ptr<RtspMediaSource> _pMediaSrc;
//直播源读取器
RingBuffer<RtpPacket::Ptr>::RingReader::Ptr _pRtpReader;
//推流或拉流客户端采用的rtp传输方式
Rtsp::eRtpType _rtpType = Rtsp::RTP_Invalid;
//sdp里面有效的track,包含音频或视频
vector<SdpTrack::Ptr> _aTrackInfo;
////////RTP over udp////////
//RTP端口,trackid idx 为数组下标
Socket::Ptr _apRtpSock[2];
//RTCP端口,trackid idx 为数组下标
Socket::Ptr _apRtcpSock[2];
//标记是否收到播放的udp打洞包,收到播放的udp打洞包后才能知道其外网udp端口号
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unordered_set<int> _udpSockConnected;
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////////RTP over udp_multicast////////
//共享的rtp组播对象
RtpMultiCaster::Ptr _multicaster;
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//登录认证
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string _strNonce;
//消耗的总流量
uint64_t _ui64TotalBytes = 0;
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//RTSP over HTTP
//quicktime 请求rtsp会产生两次tcp连接
//一次发送 get 一次发送post需要通过x-sessioncookie关联起来
string _http_x_sessioncookie;
function<void(const Buffer::Ptr &pBuf)> _onRecv;
//是否开始发送rtp
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bool _enableSendRtp;
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//rtsp推流相关
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RtspMediaSourceImp::Ptr _pushSrc;
//rtcp统计,trackid idx 为数组下标
RtcpCounter _aRtcpCnt[2];
//rtcp发送时间,trackid idx 为数组下标
Ticker _aRtcpTicker[2];
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};
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/**
* ssl加密的rtsp服务器echo show这样的设备访问
*/
typedef TcpSessionWithSSL<RtspSession> RtspSessionWithSSL;
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} /* namespace mediakit */
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#endif /* SESSION_RTSPSESSION_H_ */