mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-07 04:33:57 +08:00
573 lines
20 KiB
C++
573 lines
20 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "RtmpSession.h"
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#include "Common/config.h"
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#include "Util/onceToken.h"
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namespace mediakit {
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static int kSockFlags = SOCKET_DEFAULE_FLAGS | FLAG_MORE;
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RtmpSession::RtmpSession(const Socket::Ptr &pSock) : TcpSession(pSock) {
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DebugL << get_peer_ip();
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//设置15秒发送超时时间
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pSock->setSendTimeOutSecond(15);
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//起始接收buffer缓存设置为4K，节省内存
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pSock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
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}
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RtmpSession::~RtmpSession() {
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DebugL << get_peer_ip();
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if(_delayTask){
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_delayTask();
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_delayTask = nullptr;
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}
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}
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void RtmpSession::onError(const SockException& err) {
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DebugL << err.what();
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//流量统计事件广播
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GET_CONFIG_AND_REGISTER(uint32_t,iFlowThreshold,Broadcast::kFlowThreshold);
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if(_ui64TotalBytes > iFlowThreshold * 1024){
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bool isPlayer = !_pPublisherSrc;
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport,
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_mediaInfo,
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_ui64TotalBytes,
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_ticker.createdTime()/1000,
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isPlayer,
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*this);
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}
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}
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void RtmpSession::onManager() {
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if (_ticker.createdTime() > 15 * 1000) {
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if (!_pRingReader && !_pPublisherSrc) {
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WarnL << "非法链接:" << get_peer_ip();
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shutdown();
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}
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}
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if (_pPublisherSrc) {
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//publisher
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if (_ticker.elapsedTime() > 15 * 1000) {
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WarnL << "数据接收超时:" << get_peer_ip();
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shutdown();
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}
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}
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if(_delayTask){
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if(time(NULL) > _iTaskTimeLine){
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_delayTask();
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_delayTask = nullptr;
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}
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}
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}
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void RtmpSession::onRecv(const Buffer::Ptr &pBuf) {
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_ticker.resetTime();
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try {
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_ui64TotalBytes += pBuf->size();
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onParseRtmp(pBuf->data(), pBuf->size());
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} catch (exception &e) {
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WarnL << e.what();
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shutdown();
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}
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}
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void RtmpSession::onCmd_connect(AMFDecoder &dec) {
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auto params = dec.load<AMFValue>();
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double amfVer = 0;
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AMFValue objectEncoding = params["objectEncoding"];
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if(objectEncoding){
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amfVer = objectEncoding.as_number();
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}
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///////////set chunk size////////////////
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sendChunkSize(60000);
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////////////window Acknowledgement size/////
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sendAcknowledgementSize(5000000);
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///////////set peerBandwidth////////////////
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sendPeerBandwidth(5000000);
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_mediaInfo._app = params["app"].as_string();
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_strTcUrl = params["tcUrl"].as_string();
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if(_strTcUrl.empty()){
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//defaultVhost:默认vhost
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_strTcUrl = string(RTMP_SCHEMA) + "://" + DEFAULT_VHOST + "/" + _mediaInfo._app;
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}
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bool ok = true; //(app == APP_NAME);
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AMFValue version(AMF_OBJECT);
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version.set("fmsVer", "FMS/3,0,1,123");
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version.set("capabilities", 31.0);
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AMFValue status(AMF_OBJECT);
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status.set("level", ok ? "status" : "error");
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status.set("code", ok ? "NetConnection.Connect.Success" : "NetConnection.Connect.InvalidApp");
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status.set("description", ok ? "Connection succeeded." : "InvalidApp.");
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status.set("objectEncoding", amfVer);
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sendReply(ok ? "_result" : "_error", version, status);
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if (!ok) {
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throw std::runtime_error("Unsupported application: " + _mediaInfo._app);
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}
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AMFEncoder invoke;
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invoke << "onBWDone" << 0.0 << nullptr;
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sendResponse(MSG_CMD, invoke.data());
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}
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void RtmpSession::onCmd_createStream(AMFDecoder &dec) {
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sendReply("_result", nullptr, double(STREAM_MEDIA));
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}
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void RtmpSession::onCmd_publish(AMFDecoder &dec) {
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std::shared_ptr<Ticker> pTicker(new Ticker);
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std::shared_ptr<onceToken> pToken(new onceToken(nullptr,[pTicker](){
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DebugL << "publish 回复时间:" << pTicker->elapsedTime() << "ms";
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}));
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dec.load<AMFValue>();/* NULL */
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_mediaInfo.parse(_strTcUrl + "/" + dec.load<std::string>());
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auto onRes = [this,pToken](const string &err){
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auto src = dynamic_pointer_cast<RtmpMediaSource>(MediaSource::find(RTMP_SCHEMA,
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_mediaInfo._vhost,
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_mediaInfo._app,
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_mediaInfo._streamid,
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false));
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bool authSuccess = err.empty();
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bool ok = (!src && !_pPublisherSrc && authSuccess);
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AMFValue status(AMF_OBJECT);
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status.set("level", ok ? "status" : "error");
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status.set("code", ok ? "NetStream.Publish.Start" : (authSuccess ? "NetStream.Publish.BadName" : "NetStream.Publish.BadAuth"));
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status.set("description", ok ? "Started publishing stream." : (authSuccess ? "Already publishing." : err.data()));
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status.set("clientid", "0");
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sendReply("onStatus", nullptr, status);
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if (!ok) {
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WarnL << "onPublish:"
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<< (authSuccess ? "Already publishing:" : err.data()) << " "
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<< _mediaInfo._vhost << " "
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<< _mediaInfo._app << " "
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<< _mediaInfo._streamid << endl;
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shutdown();
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return;
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}
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_pPublisherSrc.reset(new RtmpToRtspMediaSource(_mediaInfo._vhost,_mediaInfo._app,_mediaInfo._streamid));
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_pPublisherSrc->setListener(dynamic_pointer_cast<MediaSourceEvent>(shared_from_this()));
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//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
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_sock->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
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};
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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Broadcast::AuthInvoker invoker = [weakSelf,onRes,pToken](const string &err){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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strongSelf->async([weakSelf,onRes,err,pToken](){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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onRes(err);
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPublish,
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_mediaInfo,
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invoker,
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*this);
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if(!flag){
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//该事件无人监听，默认鉴权成功
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onRes("");
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}
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}
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void RtmpSession::onCmd_deleteStream(AMFDecoder &dec) {
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AMFValue status(AMF_OBJECT);
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status.set("level", "status");
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status.set("code", "NetStream.Unpublish.Success");
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status.set("description", "Stop publishing.");
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sendReply("onStatus", nullptr, status);
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throw std::runtime_error(StrPrinter << "Stop publishing." << endl);
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}
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void RtmpSession::findStream(const function<void(const RtmpMediaSource::Ptr &src)> &cb,bool retry) {
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auto src = dynamic_pointer_cast<RtmpMediaSource>(MediaSource::find(RTMP_SCHEMA,
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_mediaInfo._vhost,
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_mediaInfo._app,
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_mediaInfo._streamid,
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true));
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if(src || !retry){
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cb(src);
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return;
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}
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//广播未找到流
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastNotFoundStream,_mediaInfo,*this);
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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auto task_id = this;
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auto media_info = _mediaInfo;
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auto onRegist = [task_id, weakSelf, media_info, cb](BroadcastMediaChangedArgs) {
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if(bRegist &&
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schema == media_info._schema &&
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vhost == media_info._vhost &&
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app == media_info._app &&
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stream == media_info._streamid){
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//播发器请求的rtmp流终于注册上了
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auto strongSelf = weakSelf.lock();
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if(!strongSelf) {
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return;
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}
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//切换到自己的线程再回复
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//如果触发 kBroadcastMediaChanged 事件的线程与本RtmpSession绑定的线程相同,
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//那么strongSelf->async操作可能是同步操作,
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//通过指定参数may_sync为false确保 NoticeCenter::delListener操作延后执行,
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//以便防止遍历事件监听对象map时做删除操作
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strongSelf->async([task_id,weakSelf,media_info,cb](){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf) {
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return;
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}
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DebugL << "收到rtmp注册事件,回复播放器:" << media_info._schema << "/" << media_info._vhost << "/" << media_info._app << "/" << media_info._streamid;
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//再找一遍媒体源，一般能找到
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strongSelf->findStream(cb,false);
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//取消延时任务，防止多次回复
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strongSelf->cancelDelyaTask();
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//取消事件监听
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//在事件触发时不能在当前线程移除事件监听,否则会导致遍历map时做删除操作导致程序崩溃
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NoticeCenter::Instance().delListener(task_id,Broadcast::kBroadcastMediaChanged);
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}, false);
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}
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};
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NoticeCenter::Instance().addListener(task_id, Broadcast::kBroadcastMediaChanged, onRegist);
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//5秒后执行失败回调
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doDelay(5, [cb,task_id]() {
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//取消监听该事件,该延时任务可以在本对象析构时或到达指定延时后调用
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//所以该对象在销毁前一定会被取消事件监听
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NoticeCenter::Instance().delListener(task_id,Broadcast::kBroadcastMediaChanged);
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cb(nullptr);
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});
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}
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void RtmpSession::sendPlayResponse(const string &err,const RtmpMediaSource::Ptr &src){
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bool authSuccess = err.empty();
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bool ok = (src.operator bool() && authSuccess);
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if (ok) {
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//stream begin
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sendUserControl(CONTROL_STREAM_BEGIN, STREAM_MEDIA);
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}
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// onStatus(NetStream.Play.Reset)
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AMFValue status(AMF_OBJECT);
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status.set("level", ok ? "status" : "error");
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status.set("code", ok ? "NetStream.Play.Reset" : (authSuccess ? "NetStream.Play.StreamNotFound" : "NetStream.Play.BadAuth"));
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status.set("description", ok ? "Resetting and playing." : (authSuccess ? "No such stream." : err.data()));
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status.set("details", _mediaInfo._streamid);
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status.set("clientid", "0");
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sendReply("onStatus", nullptr, status);
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if (!ok) {
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WarnL << (authSuccess ? "No such stream:" : err.data()) << " "
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<< _mediaInfo._vhost << " "
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<< _mediaInfo._app << " "
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<< _mediaInfo._streamid
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<< endl;
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shutdown();
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return;
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}
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// onStatus(NetStream.Play.Start)
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status.clear();
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status.set("level", "status");
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status.set("code", "NetStream.Play.Start");
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status.set("description", "Started playing.");
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status.set("details", _mediaInfo._streamid);
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status.set("clientid", "0");
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sendReply("onStatus", nullptr, status);
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// |RtmpSampleAccess(true, true)
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AMFEncoder invoke;
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invoke << "|RtmpSampleAccess" << true << true;
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sendResponse(MSG_DATA, invoke.data());
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//onStatus(NetStream.Data.Start)
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invoke.clear();
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AMFValue obj(AMF_OBJECT);
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obj.set("code", "NetStream.Data.Start");
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invoke << "onStatus" << obj;
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sendResponse(MSG_DATA, invoke.data());
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//onStatus(NetStream.Play.PublishNotify)
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status.clear();
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status.set("level", "status");
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status.set("code", "NetStream.Play.PublishNotify");
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status.set("description", "Now published.");
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status.set("details", _mediaInfo._streamid);
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status.set("clientid", "0");
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sendReply("onStatus", nullptr, status);
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// onMetaData
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invoke.clear();
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invoke << "onMetaData" << src->getMetaData();
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sendResponse(MSG_DATA, invoke.data());
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src->getConfigFrame([&](const RtmpPacket::Ptr &pkt) {
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//DebugL<<"send initial frame";
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onSendMedia(pkt);
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});
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_pRingReader = src->getRing()->attach(getPoller());
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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SockUtil::setNoDelay(_sock->rawFD(), false);
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_pRingReader->setReadCB([weakSelf](const RtmpPacket::Ptr &pkt) {
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auto strongSelf = weakSelf.lock();
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if (!strongSelf) {
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return;
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}
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strongSelf->onSendMedia(pkt);
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});
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_pRingReader->setDetachCB([weakSelf]() {
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auto strongSelf = weakSelf.lock();
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if (!strongSelf) {
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return;
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}
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strongSelf->shutdown();
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});
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_pPlayerSrc = src;
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if (src->getRing()->readerCount() == 1) {
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src->seekTo(0);
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}
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//提高发送性能
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(*this) << SocketFlags(kSockFlags);
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SockUtil::setNoDelay(_sock->rawFD(),false);
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}
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void RtmpSession::doPlayResponse(const string &err,const std::function<void(bool)> &cb){
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if(!err.empty()){
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//鉴权失败，直接返回播放失败
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sendPlayResponse(err, nullptr);
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cb(false);
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return;
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}
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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//鉴权成功，查找媒体源并回复
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findStream([weakSelf,cb](const RtmpMediaSource::Ptr &src){
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auto strongSelf = weakSelf.lock();
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if(strongSelf){
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strongSelf->sendPlayResponse("", src);
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}
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cb(src.operator bool());
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});
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}
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void RtmpSession::doPlay(AMFDecoder &dec){
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std::shared_ptr<Ticker> pTicker(new Ticker);
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std::shared_ptr<onceToken> pToken(new onceToken(nullptr,[pTicker](){
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DebugL << "play 回复时间:" << pTicker->elapsedTime() << "ms";
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}));
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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Broadcast::AuthInvoker invoker = [weakSelf,pToken](const string &err){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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strongSelf->async([weakSelf,err,pToken](){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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strongSelf->doPlayResponse(err,[pToken](bool){});
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed,_mediaInfo,invoker,*this);
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if(!flag){
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//该事件无人监听,默认不鉴权
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doPlayResponse("",[pToken](bool){});
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}
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}
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void RtmpSession::onCmd_play2(AMFDecoder &dec) {
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doPlay(dec);
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}
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void RtmpSession::onCmd_play(AMFDecoder &dec) {
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dec.load<AMFValue>();/* NULL */
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_mediaInfo.parse(_strTcUrl + "/" + dec.load<std::string>());
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doPlay(dec);
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}
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void RtmpSession::onCmd_pause(AMFDecoder &dec) {
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dec.load<AMFValue>();/* NULL */
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bool paused = dec.load<bool>();
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TraceL << paused;
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AMFValue status(AMF_OBJECT);
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status.set("level", "status");
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status.set("code", paused ? "NetStream.Pause.Notify" : "NetStream.Unpause.Notify");
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status.set("description", paused ? "Paused stream." : "Unpaused stream.");
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sendReply("onStatus", nullptr, status);
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//streamBegin
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sendUserControl(paused ? CONTROL_STREAM_EOF : CONTROL_STREAM_BEGIN,
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STREAM_MEDIA);
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if (!_pRingReader) {
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throw std::runtime_error("Rtmp not started yet!");
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}
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if (paused) {
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_pRingReader->setReadCB(nullptr);
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} else {
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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_pRingReader->setReadCB([weakSelf](const RtmpPacket::Ptr &pkt) {
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auto strongSelf = weakSelf.lock();
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if(!strongSelf) {
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return;
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}
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strongSelf->onSendMedia(pkt);
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});
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}
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}
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void RtmpSession::setMetaData(AMFDecoder &dec) {
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if (!_pPublisherSrc) {
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throw std::runtime_error("not a publisher");
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}
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std::string type = dec.load<std::string>();
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if (type != "onMetaData") {
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throw std::runtime_error("can only set metadata");
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}
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_pPublisherSrc->onGetMetaData(dec.load<AMFValue>());
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||
}
|
||
|
||
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()) {
|
||
TraceL << "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>();
|
||
TraceL << "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_AND_REGISTER(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:
|
||
WarnL << "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();
|
||
InfoL << "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);
|
||
}
|
||
|
||
void RtmpSession::doDelay(int delaySec, const std::function<void()> &fun) {
|
||
if(_delayTask){
|
||
_delayTask();
|
||
}
|
||
_delayTask = fun;
|
||
_iTaskTimeLine = time(NULL) + delaySec;
|
||
}
|
||
|
||
void RtmpSession::cancelDelyaTask(){
|
||
_delayTask = nullptr;
|
||
}
|
||
|
||
|
||
} /* namespace mediakit */
|