mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-07 04:33:57 +08:00
493 lines
17 KiB
C++
493 lines
17 KiB
C++
/*
|
||
* MIT License
|
||
*
|
||
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
|
||
*
|
||
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
|
||
*
|
||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
* of this software and associated documentation files (the "Software"), to deal
|
||
* in the Software without restriction, including without limitation the rights
|
||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
* copies of the Software, and to permit persons to whom the Software is
|
||
* furnished to do so, subject to the following conditions:
|
||
*
|
||
* The above copyright notice and this permission notice shall be included in all
|
||
* copies or substantial portions of the Software.
|
||
*
|
||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
* SOFTWARE.
|
||
*/
|
||
|
||
|
||
#include "RtmpSession.h"
|
||
#include "Common/config.h"
|
||
#include "Util/onceToken.h"
|
||
|
||
namespace mediakit {
|
||
|
||
static int kSockFlags = SOCKET_DEFAULE_FLAGS | FLAG_MORE;
|
||
|
||
RtmpSession::RtmpSession(const Socket::Ptr &pSock) : TcpSession(pSock) {
|
||
DebugP(this);
|
||
//设置15秒发送超时时间
|
||
pSock->setSendTimeOutSecond(15);
|
||
//起始接收buffer缓存设置为4K，节省内存
|
||
pSock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
|
||
}
|
||
|
||
RtmpSession::~RtmpSession() {
|
||
DebugP(this);
|
||
}
|
||
|
||
void RtmpSession::onError(const SockException& err) {
|
||
DebugP(this) << err.what();
|
||
|
||
//流量统计事件广播
|
||
GET_CONFIG(uint32_t,iFlowThreshold,General::kFlowThreshold);
|
||
|
||
if(_ui64TotalBytes > iFlowThreshold * 1024){
|
||
bool isPlayer = !_pPublisherSrc;
|
||
NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport,
|
||
_mediaInfo,
|
||
_ui64TotalBytes,
|
||
_ticker.createdTime()/1000,
|
||
isPlayer,
|
||
*this);
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onManager() {
|
||
GET_CONFIG(uint32_t,handshake_sec,Rtmp::kKeepAliveSecond);
|
||
GET_CONFIG(uint32_t,keep_alive_sec,Rtmp::kKeepAliveSecond);
|
||
|
||
if (_ticker.createdTime() > handshake_sec * 1000) {
|
||
if (!_pRingReader && !_pPublisherSrc) {
|
||
shutdown(SockException(Err_timeout,"illegal connection"));
|
||
}
|
||
}
|
||
if (_pPublisherSrc) {
|
||
//publisher
|
||
if (_ticker.elapsedTime() > keep_alive_sec * 1000) {
|
||
shutdown(SockException(Err_timeout,"recv data from rtmp pusher timeout"));
|
||
}
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onRecv(const Buffer::Ptr &pBuf) {
|
||
_ticker.resetTime();
|
||
try {
|
||
_ui64TotalBytes += pBuf->size();
|
||
onParseRtmp(pBuf->data(), pBuf->size());
|
||
} catch (exception &e) {
|
||
shutdown(SockException(Err_shutdown,StrPrinter << "catch exception:" << e.what()));
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onCmd_connect(AMFDecoder &dec) {
|
||
auto params = dec.load<AMFValue>();
|
||
double amfVer = 0;
|
||
AMFValue objectEncoding = params["objectEncoding"];
|
||
if(objectEncoding){
|
||
amfVer = objectEncoding.as_number();
|
||
}
|
||
///////////set chunk size////////////////
|
||
sendChunkSize(60000);
|
||
////////////window Acknowledgement size/////
|
||
sendAcknowledgementSize(5000000);
|
||
///////////set peerBandwidth////////////////
|
||
sendPeerBandwidth(5000000);
|
||
|
||
_mediaInfo._app = params["app"].as_string();
|
||
_strTcUrl = params["tcUrl"].as_string();
|
||
if(_strTcUrl.empty()){
|
||
//defaultVhost:默认vhost
|
||
_strTcUrl = string(RTMP_SCHEMA) + "://" + DEFAULT_VHOST + "/" + _mediaInfo._app;
|
||
}
|
||
bool ok = true; //(app == APP_NAME);
|
||
AMFValue version(AMF_OBJECT);
|
||
version.set("fmsVer", "FMS/3,0,1,123");
|
||
version.set("capabilities", 31.0);
|
||
AMFValue status(AMF_OBJECT);
|
||
status.set("level", ok ? "status" : "error");
|
||
status.set("code", ok ? "NetConnection.Connect.Success" : "NetConnection.Connect.InvalidApp");
|
||
status.set("description", ok ? "Connection succeeded." : "InvalidApp.");
|
||
status.set("objectEncoding", amfVer);
|
||
sendReply(ok ? "_result" : "_error", version, status);
|
||
if (!ok) {
|
||
throw std::runtime_error("Unsupported application: " + _mediaInfo._app);
|
||
}
|
||
|
||
AMFEncoder invoke;
|
||
invoke << "onBWDone" << 0.0 << nullptr;
|
||
sendResponse(MSG_CMD, invoke.data());
|
||
}
|
||
|
||
void RtmpSession::onCmd_createStream(AMFDecoder &dec) {
|
||
sendReply("_result", nullptr, double(STREAM_MEDIA));
|
||
}
|
||
|
||
void RtmpSession::onCmd_publish(AMFDecoder &dec) {
|
||
std::shared_ptr<Ticker> pTicker(new Ticker);
|
||
weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
|
||
std::shared_ptr<onceToken> pToken(new onceToken(nullptr,[pTicker,weakSelf](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(strongSelf){
|
||
DebugP(strongSelf.get()) << "publish 回复时间:" << pTicker->elapsedTime() << "ms";
|
||
}
|
||
}));
|
||
dec.load<AMFValue>();/* NULL */
|
||
_mediaInfo.parse(_strTcUrl + "/" + dec.load<std::string>());
|
||
|
||
auto onRes = [this,pToken](const string &err){
|
||
auto src = dynamic_pointer_cast<RtmpMediaSource>(MediaSource::find(RTMP_SCHEMA,
|
||
_mediaInfo._vhost,
|
||
_mediaInfo._app,
|
||
_mediaInfo._streamid,
|
||
false));
|
||
bool authSuccess = err.empty();
|
||
bool ok = (!src && !_pPublisherSrc && authSuccess);
|
||
AMFValue status(AMF_OBJECT);
|
||
status.set("level", ok ? "status" : "error");
|
||
status.set("code", ok ? "NetStream.Publish.Start" : (authSuccess ? "NetStream.Publish.BadName" : "NetStream.Publish.BadAuth"));
|
||
status.set("description", ok ? "Started publishing stream." : (authSuccess ? "Already publishing." : err.data()));
|
||
status.set("clientid", "0");
|
||
sendReply("onStatus", nullptr, status);
|
||
if (!ok) {
|
||
string errMsg = StrPrinter << (authSuccess ? "already publishing:" : err.data()) << " "
|
||
<< _mediaInfo._vhost << " "
|
||
<< _mediaInfo._app << " "
|
||
<< _mediaInfo._streamid;
|
||
shutdown(SockException(Err_shutdown,errMsg));
|
||
return;
|
||
}
|
||
_pPublisherSrc.reset(new RtmpToRtspMediaSource(_mediaInfo._vhost,_mediaInfo._app,_mediaInfo._streamid));
|
||
_pPublisherSrc->setListener(dynamic_pointer_cast<MediaSourceEvent>(shared_from_this()));
|
||
//如果是rtmp推流客户端，那么加大TCP接收缓存，这样能提升接收性能
|
||
_sock->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
|
||
};
|
||
|
||
Broadcast::AuthInvoker invoker = [weakSelf,onRes,pToken](const string &err){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
return;
|
||
}
|
||
strongSelf->async([weakSelf,onRes,err,pToken](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
return;
|
||
}
|
||
onRes(err);
|
||
});
|
||
};
|
||
auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPublish,
|
||
_mediaInfo,
|
||
invoker,
|
||
*this);
|
||
if(!flag){
|
||
//该事件无人监听，默认鉴权成功
|
||
onRes("");
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onCmd_deleteStream(AMFDecoder &dec) {
|
||
AMFValue status(AMF_OBJECT);
|
||
status.set("level", "status");
|
||
status.set("code", "NetStream.Unpublish.Success");
|
||
status.set("description", "Stop publishing.");
|
||
sendReply("onStatus", nullptr, status);
|
||
throw std::runtime_error(StrPrinter << "Stop publishing." << endl);
|
||
}
|
||
|
||
|
||
void RtmpSession::sendPlayResponse(const string &err,const RtmpMediaSource::Ptr &src){
|
||
bool authSuccess = err.empty();
|
||
bool ok = (src.operator bool() && authSuccess);
|
||
if (ok) {
|
||
//stream begin
|
||
sendUserControl(CONTROL_STREAM_BEGIN, STREAM_MEDIA);
|
||
}
|
||
// onStatus(NetStream.Play.Reset)
|
||
AMFValue status(AMF_OBJECT);
|
||
status.set("level", ok ? "status" : "error");
|
||
status.set("code", ok ? "NetStream.Play.Reset" : (authSuccess ? "NetStream.Play.StreamNotFound" : "NetStream.Play.BadAuth"));
|
||
status.set("description", ok ? "Resetting and playing." : (authSuccess ? "No such stream." : err.data()));
|
||
status.set("details", _mediaInfo._streamid);
|
||
status.set("clientid", "0");
|
||
sendReply("onStatus", nullptr, status);
|
||
if (!ok) {
|
||
string errMsg = StrPrinter << (authSuccess ? "no such stream:" : err.data()) << " "
|
||
<< _mediaInfo._vhost << " "
|
||
<< _mediaInfo._app << " "
|
||
<< _mediaInfo._streamid;
|
||
shutdown(SockException(Err_shutdown,errMsg));
|
||
return;
|
||
}
|
||
|
||
// onStatus(NetStream.Play.Start)
|
||
status.clear();
|
||
status.set("level", "status");
|
||
status.set("code", "NetStream.Play.Start");
|
||
status.set("description", "Started playing.");
|
||
status.set("details", _mediaInfo._streamid);
|
||
status.set("clientid", "0");
|
||
sendReply("onStatus", nullptr, status);
|
||
|
||
// |RtmpSampleAccess(true, true)
|
||
AMFEncoder invoke;
|
||
invoke << "|RtmpSampleAccess" << true << true;
|
||
sendResponse(MSG_DATA, invoke.data());
|
||
|
||
//onStatus(NetStream.Data.Start)
|
||
invoke.clear();
|
||
AMFValue obj(AMF_OBJECT);
|
||
obj.set("code", "NetStream.Data.Start");
|
||
invoke << "onStatus" << obj;
|
||
sendResponse(MSG_DATA, invoke.data());
|
||
|
||
//onStatus(NetStream.Play.PublishNotify)
|
||
status.clear();
|
||
status.set("level", "status");
|
||
status.set("code", "NetStream.Play.PublishNotify");
|
||
status.set("description", "Now published.");
|
||
status.set("details", _mediaInfo._streamid);
|
||
status.set("clientid", "0");
|
||
sendReply("onStatus", nullptr, status);
|
||
|
||
// onMetaData
|
||
invoke.clear();
|
||
invoke << "onMetaData" << src->getMetaData();
|
||
sendResponse(MSG_DATA, invoke.data());
|
||
|
||
src->getConfigFrame([&](const RtmpPacket::Ptr &pkt) {
|
||
//DebugP(this)<<"send initial frame";
|
||
onSendMedia(pkt);
|
||
});
|
||
|
||
_pRingReader = src->getRing()->attach(getPoller());
|
||
weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
|
||
SockUtil::setNoDelay(_sock->rawFD(), false);
|
||
_pRingReader->setReadCB([weakSelf](const RtmpPacket::Ptr &pkt) {
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
return;
|
||
}
|
||
strongSelf->onSendMedia(pkt);
|
||
});
|
||
_pRingReader->setDetachCB([weakSelf]() {
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
return;
|
||
}
|
||
strongSelf->shutdown(SockException(Err_shutdown,"rtmp ring buffer detached"));
|
||
});
|
||
_pPlayerSrc = src;
|
||
if (src->readerCount() == 1) {
|
||
src->seekTo(0);
|
||
}
|
||
|
||
//提高发送性能
|
||
(*this) << SocketFlags(kSockFlags);
|
||
SockUtil::setNoDelay(_sock->rawFD(),false);
|
||
}
|
||
|
||
void RtmpSession::doPlayResponse(const string &err,const std::function<void(bool)> &cb){
|
||
if(!err.empty()){
|
||
//鉴权失败，直接返回播放失败
|
||
sendPlayResponse(err, nullptr);
|
||
cb(false);
|
||
return;
|
||
}
|
||
|
||
//鉴权成功，查找媒体源并回复
|
||
_mediaInfo._schema = RTMP_SCHEMA;
|
||
weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
|
||
MediaSource::findAsync(_mediaInfo,weakSelf.lock(), true,[weakSelf,cb](const MediaSource::Ptr &src){
|
||
auto rtmp_src = dynamic_pointer_cast<RtmpMediaSource>(src);
|
||
auto strongSelf = weakSelf.lock();
|
||
if(strongSelf){
|
||
strongSelf->sendPlayResponse("", rtmp_src);
|
||
}
|
||
cb(rtmp_src.operator bool());
|
||
});
|
||
}
|
||
|
||
void RtmpSession::doPlay(AMFDecoder &dec){
|
||
std::shared_ptr<Ticker> pTicker(new Ticker);
|
||
weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
|
||
std::shared_ptr<onceToken> pToken(new onceToken(nullptr,[pTicker,weakSelf](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(strongSelf) {
|
||
DebugP(strongSelf.get()) << "play 回复时间:" << pTicker->elapsedTime() << "ms";
|
||
}
|
||
}));
|
||
Broadcast::AuthInvoker invoker = [weakSelf,pToken](const string &err){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
return;
|
||
}
|
||
strongSelf->async([weakSelf,err,pToken](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
return;
|
||
}
|
||
strongSelf->doPlayResponse(err,[pToken](bool){});
|
||
});
|
||
};
|
||
auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed,_mediaInfo,invoker,*this);
|
||
if(!flag){
|
||
//该事件无人监听,默认不鉴权
|
||
doPlayResponse("",[pToken](bool){});
|
||
}
|
||
}
|
||
void RtmpSession::onCmd_play2(AMFDecoder &dec) {
|
||
doPlay(dec);
|
||
}
|
||
void RtmpSession::onCmd_play(AMFDecoder &dec) {
|
||
dec.load<AMFValue>();/* NULL */
|
||
_mediaInfo.parse(_strTcUrl + "/" + dec.load<std::string>());
|
||
doPlay(dec);
|
||
}
|
||
|
||
void RtmpSession::onCmd_pause(AMFDecoder &dec) {
|
||
dec.load<AMFValue>();/* NULL */
|
||
bool paused = dec.load<bool>();
|
||
TraceP(this) << paused;
|
||
AMFValue status(AMF_OBJECT);
|
||
status.set("level", "status");
|
||
status.set("code", paused ? "NetStream.Pause.Notify" : "NetStream.Unpause.Notify");
|
||
status.set("description", paused ? "Paused stream." : "Unpaused stream.");
|
||
sendReply("onStatus", nullptr, status);
|
||
//streamBegin
|
||
sendUserControl(paused ? CONTROL_STREAM_EOF : CONTROL_STREAM_BEGIN,
|
||
STREAM_MEDIA);
|
||
if (!_pRingReader) {
|
||
throw std::runtime_error("Rtmp not started yet!");
|
||
}
|
||
if (paused) {
|
||
_pRingReader->setReadCB(nullptr);
|
||
} else {
|
||
weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
|
||
_pRingReader->setReadCB([weakSelf](const RtmpPacket::Ptr &pkt) {
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf) {
|
||
return;
|
||
}
|
||
strongSelf->onSendMedia(pkt);
|
||
});
|
||
}
|
||
}
|
||
|
||
void RtmpSession::setMetaData(AMFDecoder &dec) {
|
||
if (!_pPublisherSrc) {
|
||
throw std::runtime_error("not a publisher");
|
||
}
|
||
std::string type = dec.load<std::string>();
|
||
if (type != "onMetaData") {
|
||
throw std::runtime_error("can only set metadata");
|
||
}
|
||
_pPublisherSrc->onGetMetaData(dec.load<AMFValue>());
|
||
}
|
||
|
||
void RtmpSession::onProcessCmd(AMFDecoder &dec) {
|
||
typedef void (RtmpSession::*rtmpCMDHandle)(AMFDecoder &dec);
|
||
static unordered_map<string, rtmpCMDHandle> g_mapCmd;
|
||
static onceToken token([]() {
|
||
g_mapCmd.emplace("connect",&RtmpSession::onCmd_connect);
|
||
g_mapCmd.emplace("createStream",&RtmpSession::onCmd_createStream);
|
||
g_mapCmd.emplace("publish",&RtmpSession::onCmd_publish);
|
||
g_mapCmd.emplace("deleteStream",&RtmpSession::onCmd_deleteStream);
|
||
g_mapCmd.emplace("play",&RtmpSession::onCmd_play);
|
||
g_mapCmd.emplace("play2",&RtmpSession::onCmd_play2);
|
||
g_mapCmd.emplace("seek",&RtmpSession::onCmd_seek);
|
||
g_mapCmd.emplace("pause",&RtmpSession::onCmd_pause);}, []() {});
|
||
|
||
std::string method = dec.load<std::string>();
|
||
auto it = g_mapCmd.find(method);
|
||
if (it == g_mapCmd.end()) {
|
||
TraceP(this) << "can not support cmd:" << method;
|
||
return;
|
||
}
|
||
_dNowReqID = dec.load<double>();
|
||
auto fun = it->second;
|
||
(this->*fun)(dec);
|
||
}
|
||
|
||
void RtmpSession::onRtmpChunk(RtmpPacket &chunkData) {
|
||
switch (chunkData.typeId) {
|
||
case MSG_CMD:
|
||
case MSG_CMD3: {
|
||
AMFDecoder dec(chunkData.strBuf, chunkData.typeId == MSG_CMD3 ? 1 : 0);
|
||
onProcessCmd(dec);
|
||
}
|
||
break;
|
||
|
||
case MSG_DATA:
|
||
case MSG_DATA3: {
|
||
AMFDecoder dec(chunkData.strBuf, chunkData.typeId == MSG_CMD3 ? 1 : 0);
|
||
std::string type = dec.load<std::string>();
|
||
TraceP(this) << "notify:" << type;
|
||
if (type == "@setDataFrame") {
|
||
setMetaData(dec);
|
||
}
|
||
}
|
||
break;
|
||
case MSG_AUDIO:
|
||
case MSG_VIDEO: {
|
||
if (!_pPublisherSrc) {
|
||
throw std::runtime_error("Not a rtmp publisher!");
|
||
}
|
||
GET_CONFIG(bool,rtmp_modify_stamp,Rtmp::kModifyStamp);
|
||
if(rtmp_modify_stamp){
|
||
chunkData.timeStamp = _stampTicker[chunkData.typeId % 2].elapsedTime();
|
||
}
|
||
_pPublisherSrc->onWrite(std::make_shared<RtmpPacket>(std::move(chunkData)));
|
||
}
|
||
break;
|
||
default:
|
||
WarnP(this) << "unhandled message:" << (int) chunkData.typeId << hexdump(chunkData.strBuf.data(), chunkData.strBuf.size());
|
||
break;
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onCmd_seek(AMFDecoder &dec) {
|
||
dec.load<AMFValue>();/* NULL */
|
||
auto milliSeconds = dec.load<AMFValue>().as_number();
|
||
InfoP(this) << "rtmp seekTo(ms):" << milliSeconds;
|
||
auto stongSrc = _pPlayerSrc.lock();
|
||
if (stongSrc) {
|
||
stongSrc->seekTo(milliSeconds);
|
||
}
|
||
AMFValue status(AMF_OBJECT);
|
||
AMFEncoder invoke;
|
||
status.set("level", "status");
|
||
status.set("code", "NetStream.Seek.Notify");
|
||
status.set("description", "Seeking.");
|
||
sendReply("onStatus", nullptr, status);
|
||
}
|
||
|
||
void RtmpSession::onSendMedia(const RtmpPacket::Ptr &pkt) {
|
||
auto modifiedStamp = pkt->timeStamp;
|
||
auto &firstStamp = _aui32FirstStamp[pkt->typeId % 2];
|
||
if(!firstStamp){
|
||
firstStamp = modifiedStamp;
|
||
}
|
||
if(modifiedStamp >= firstStamp){
|
||
//计算时间戳增量
|
||
modifiedStamp -= firstStamp;
|
||
}else{
|
||
//发生回环，重新计算时间戳增量
|
||
CLEAR_ARR(_aui32FirstStamp);
|
||
modifiedStamp = 0;
|
||
}
|
||
sendRtmp(pkt->typeId, pkt->streamId, pkt, modifiedStamp, pkt->chunkId);
|
||
}
|
||
|
||
|
||
} /* namespace mediakit */
|