mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-07 04:33:57 +08:00
572 lines
21 KiB
C++
572 lines
21 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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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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RtmpSession::RtmpSession(const Socket::Ptr &sock) : TcpSession(sock) {
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DebugP(this);
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GET_CONFIG(uint32_t,keep_alive_sec,Rtmp::kKeepAliveSecond);
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sock->setSendTimeOutSecond(keep_alive_sec);
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}
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RtmpSession::~RtmpSession() {
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DebugP(this);
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}
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void RtmpSession::onError(const SockException& err) {
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bool isPlayer = !_publisher_src;
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uint64_t duration = _ticker.createdTime()/1000;
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WarnP(this) << (isPlayer ? "RTMP播放器(" : "RTMP推流器(")
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<< _media_info._vhost << "/"
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<< _media_info._app << "/"
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<< _media_info._streamid
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<< ")断开:" << err.what()
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<< ",耗时(s):" << duration;
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//流量统计事件广播
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GET_CONFIG(uint32_t,iFlowThreshold,General::kFlowThreshold);
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if(_total_bytes >= iFlowThreshold * 1024){
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, isPlayer, static_cast<SockInfo &>(*this));
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}
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}
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void RtmpSession::onManager() {
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GET_CONFIG(uint32_t,handshake_sec,Rtmp::kHandshakeSecond);
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GET_CONFIG(uint32_t,keep_alive_sec,Rtmp::kKeepAliveSecond);
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if (_ticker.createdTime() > handshake_sec * 1000) {
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if (!_ring_reader && !_publisher_src) {
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shutdown(SockException(Err_timeout,"illegal connection"));
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}
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}
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if (_publisher_src) {
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//publisher
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if (_ticker.elapsedTime() > keep_alive_sec * 1000) {
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shutdown(SockException(Err_timeout,"recv data from rtmp pusher timeout"));
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}
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}
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}
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void RtmpSession::onRecv(const Buffer::Ptr &buf) {
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_ticker.resetTime();
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try {
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_total_bytes += buf->size();
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onParseRtmp(buf->data(), buf->size());
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} catch (exception &ex) {
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shutdown(SockException(Err_shutdown, ex.what()));
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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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///////////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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_media_info._app = params["app"].as_string();
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_tc_url = params["tcUrl"].as_string();
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if(_tc_url.empty()){
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//defaultVhost:默认vhost
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_tc_url = string(RTMP_SCHEMA) + "://" + DEFAULT_VHOST + "/" + _media_info._app;
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} else {
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auto pos = _tc_url.rfind('?');
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if (pos != string::npos) {
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//tc_url 中可能包含?以及参数，参见issue: #692
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_tc_url = _tc_url.substr(0, pos);
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}
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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", params["objectEncoding"]);
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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: " + _media_info._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> ticker(new Ticker);
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weak_ptr<RtmpSession> weak_self = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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std::shared_ptr<onceToken> pToken(new onceToken(nullptr,[ticker,weak_self](){
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auto strong_self = weak_self.lock();
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if(strong_self){
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DebugP(strong_self.get()) << "publish 回复时间:" << ticker->elapsedTime() << "ms";
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}
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}));
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dec.load<AMFValue>();/* NULL */
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_media_info.parse(_tc_url + "/" + getStreamId(dec.load<std::string>()));
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_media_info._schema = RTMP_SCHEMA;
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auto on_res = [this,pToken](const string &err, bool enableHls, bool enableMP4){
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auto src = dynamic_pointer_cast<RtmpMediaSource>(MediaSource::find(RTMP_SCHEMA,
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_media_info._vhost,
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_media_info._app,
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_media_info._streamid));
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bool auth_success = err.empty();
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bool ok = (!src && !_publisher_src && auth_success);
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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" : (auth_success ? "NetStream.Publish.BadName" : "NetStream.Publish.BadAuth"));
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status.set("description", ok ? "Started publishing stream." : (auth_success ? "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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string errMsg = StrPrinter << (auth_success ? "already publishing:" : err.data()) << " "
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<< _media_info._vhost << " "
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<< _media_info._app << " "
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<< _media_info._streamid;
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shutdown(SockException(Err_shutdown,errMsg));
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return;
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}
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_publisher_src.reset(new RtmpMediaSourceImp(_media_info._vhost, _media_info._app, _media_info._streamid));
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_publisher_src->setListener(dynamic_pointer_cast<MediaSourceEvent>(shared_from_this()));
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//设置转协议
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_publisher_src->setProtocolTranslation(enableHls, enableMP4);
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setSocketFlags();
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};
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if(_media_info._app.empty() || _media_info._streamid.empty()){
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//不允许莫名其妙的推流url
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on_res("rtmp推流url非法", false, false);
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return;
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}
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Broadcast::PublishAuthInvoker invoker = [weak_self, on_res, pToken](const string &err, bool enableHls, bool enableMP4) {
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auto strongSelf = weak_self.lock();
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if (!strongSelf) {
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return;
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}
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strongSelf->async([weak_self, on_res, err, pToken, enableHls, enableMP4]() {
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auto strongSelf = weak_self.lock();
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if (!strongSelf) {
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return;
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}
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on_res(err, enableHls, enableMP4);
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPublish, _media_info, invoker, static_cast<SockInfo &>(*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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GET_CONFIG(bool,to_hls,General::kPublishToHls);
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GET_CONFIG(bool,to_mp4,General::kPublishToMP4);
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on_res("", to_hls, to_mp4);
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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::sendPlayResponse(const string &err,const RtmpMediaSource::Ptr &src){
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bool auth_success = err.empty();
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bool ok = (src.operator bool() && auth_success);
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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" : (auth_success ? "NetStream.Play.StreamNotFound" : "NetStream.Play.BadAuth"));
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status.set("description", ok ? "Resetting and playing." : (auth_success ? "No such stream." : err.data()));
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status.set("details", _media_info._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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string err_msg = StrPrinter << (auth_success ? "no such stream:" : err.data()) << " "
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<< _media_info._vhost << " "
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<< _media_info._app << " "
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<< _media_info._streamid;
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shutdown(SockException(Err_shutdown, err_msg));
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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", _media_info._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", _media_info._streamid);
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status.set("clientid", "0");
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sendReply("onStatus", nullptr, status);
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auto &metadata = src->getMetaData();
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if(metadata){
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//在有metadata的情况下才发送metadata
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//其实metadata没什么用，有些推流器不产生metadata
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// onMetaData
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invoke.clear();
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invoke << "onMetaData" << metadata;
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sendResponse(MSG_DATA, invoke.data());
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auto duration = metadata["duration"];
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if(duration && duration.as_number() > 0){
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//这是点播，使用绝对时间戳
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_stamp[0].setPlayBack();
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_stamp[1].setPlayBack();
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}
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}
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src->getConfigFrame([&](const RtmpPacket::Ptr &pkt) {
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//DebugP(this)<<"send initial frame";
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onSendMedia(pkt);
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});
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//音频同步于视频
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_stamp[0].syncTo(_stamp[1]);
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_ring_reader = src->getRing()->attach(getPoller());
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weak_ptr<RtmpSession> weakSelf = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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_ring_reader->setReadCB([weakSelf](const RtmpMediaSource::RingDataType &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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if(strongSelf->_paused){
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return;
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}
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size_t i = 0;
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auto size = pkt->size();
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strongSelf->setSendFlushFlag(false);
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pkt->for_each([&](const RtmpPacket::Ptr &rtmp){
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if(++i == size){
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strongSelf->setSendFlushFlag(true);
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}
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strongSelf->onSendMedia(rtmp);
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});
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});
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_ring_reader->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(SockException(Err_shutdown,"rtmp ring buffer detached"));
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});
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_player_src = src;
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if (src->totalReaderCount() == 1) {
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src->seekTo(0);
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}
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//提高服务器发送性能
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setSocketFlags();
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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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//鉴权成功，查找媒体源并回复
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weak_ptr<RtmpSession> weak_self = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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MediaSource::findAsync(_media_info, weak_self.lock(), [weak_self,cb](const MediaSource::Ptr &src){
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auto rtmp_src = dynamic_pointer_cast<RtmpMediaSource>(src);
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auto strong_self = weak_self.lock();
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if(strong_self){
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strong_self->sendPlayResponse("", rtmp_src);
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}
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cb(rtmp_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> ticker(new Ticker);
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weak_ptr<RtmpSession> weak_self = dynamic_pointer_cast<RtmpSession>(shared_from_this());
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std::shared_ptr<onceToken> token(new onceToken(nullptr, [ticker,weak_self](){
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auto strongSelf = weak_self.lock();
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if (strongSelf) {
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DebugP(strongSelf.get()) << "play 回复时间:" << ticker->elapsedTime() << "ms";
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}
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}));
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Broadcast::AuthInvoker invoker = [weak_self,token](const string &err){
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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strong_self->async([weak_self, err, token]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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strong_self->doPlayResponse(err, [token](bool) {});
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed, _media_info, invoker, static_cast<SockInfo &>(*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("",[token](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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string RtmpSession::getStreamId(const string &str){
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string stream_id;
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string params;
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auto pos = str.find('?');
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if (pos != string::npos) {
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//有url参数
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stream_id = str.substr(0, pos);
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//获取url参数
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params = str.substr(pos + 1);
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} else {
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//没有url参数
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stream_id = str;
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}
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pos = stream_id.find(":");
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if (pos != string::npos) {
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//vlc和ffplay在播放 rtmp://127.0.0.1/record/0.mp4时，
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//传过来的url会是rtmp://127.0.0.1/record/mp4:0,
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//我们在这里还原成0.mp4
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//实际使用时发现vlc，mpv等会传过来rtmp://127.0.0.1/record/mp4:0.mp4,这里做个判断
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auto ext = stream_id.substr(0, pos);
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stream_id = stream_id.substr(pos + 1);
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if (stream_id.find(ext) == string::npos) {
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stream_id = stream_id + "." + ext;
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}
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}
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if (params.empty()) {
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//没有url参数
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return stream_id;
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}
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//有url参数
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return stream_id + '?' + params;
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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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_media_info.parse(_tc_url + "/" + getStreamId(dec.load<std::string>()));
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_media_info._schema = RTMP_SCHEMA;
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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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TraceP(this) << 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, STREAM_MEDIA);
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_paused = paused;
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}
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void RtmpSession::setMetaData(AMFDecoder &dec) {
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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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_publisher_metadata = dec.load<AMFValue>();
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}
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void RtmpSession::onProcessCmd(AMFDecoder &dec) {
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typedef void (RtmpSession::*cmd_function)(AMFDecoder &dec);
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static unordered_map<string, cmd_function> s_cmd_functions;
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static onceToken token([]() {
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s_cmd_functions.emplace("connect", &RtmpSession::onCmd_connect);
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s_cmd_functions.emplace("createStream", &RtmpSession::onCmd_createStream);
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s_cmd_functions.emplace("publish", &RtmpSession::onCmd_publish);
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s_cmd_functions.emplace("deleteStream", &RtmpSession::onCmd_deleteStream);
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s_cmd_functions.emplace("play", &RtmpSession::onCmd_play);
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s_cmd_functions.emplace("play2", &RtmpSession::onCmd_play2);
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s_cmd_functions.emplace("seek", &RtmpSession::onCmd_seek);
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s_cmd_functions.emplace("pause", &RtmpSession::onCmd_pause);
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});
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std::string method = dec.load<std::string>();
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auto it = s_cmd_functions.find(method);
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if (it == s_cmd_functions.end()) {
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// TraceP(this) << "can not support cmd:" << method;
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return;
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}
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_recv_req_id = dec.load<double>();
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auto fun = it->second;
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(this->*fun)(dec);
|
||
}
|
||
|
||
void RtmpSession::onRtmpChunk(RtmpPacket::Ptr packet) {
|
||
auto &chunk_data = *packet;
|
||
switch (chunk_data.type_id) {
|
||
case MSG_CMD:
|
||
case MSG_CMD3: {
|
||
AMFDecoder dec(chunk_data.buffer, chunk_data.type_id == MSG_CMD3 ? 1 : 0);
|
||
onProcessCmd(dec);
|
||
break;
|
||
}
|
||
|
||
case MSG_DATA:
|
||
case MSG_DATA3: {
|
||
AMFDecoder dec(chunk_data.buffer, chunk_data.type_id == MSG_CMD3 ? 1 : 0);
|
||
std::string type = dec.load<std::string>();
|
||
if (type == "@setDataFrame") {
|
||
setMetaData(dec);
|
||
} else {
|
||
TraceP(this) << "unknown notify:" << type;
|
||
}
|
||
break;
|
||
}
|
||
|
||
case MSG_AUDIO:
|
||
case MSG_VIDEO: {
|
||
if (!_publisher_src) {
|
||
WarnL << "Not a rtmp publisher!";
|
||
return;
|
||
}
|
||
GET_CONFIG(bool, rtmp_modify_stamp, Rtmp::kModifyStamp);
|
||
if (rtmp_modify_stamp) {
|
||
int64_t dts_out;
|
||
_stamp[chunk_data.type_id % 2].revise(chunk_data.time_stamp, chunk_data.time_stamp, dts_out, dts_out, true);
|
||
chunk_data.time_stamp = (uint32_t)dts_out;
|
||
}
|
||
|
||
if (!_set_meta_data) {
|
||
_set_meta_data = true;
|
||
_publisher_src->setMetaData(_publisher_metadata ? _publisher_metadata : TitleMeta().getMetadata());
|
||
}
|
||
_publisher_src->onWrite(std::move(packet));
|
||
break;
|
||
}
|
||
|
||
default:
|
||
WarnP(this) << "unhandled message:" << (int) chunk_data.type_id << hexdump(chunk_data.buffer.data(), chunk_data.buffer.size());
|
||
break;
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onCmd_seek(AMFDecoder &dec) {
|
||
dec.load<AMFValue>();/* NULL */
|
||
AMFValue status(AMF_OBJECT);
|
||
AMFEncoder invoke;
|
||
status.set("level", "status");
|
||
status.set("code", "NetStream.Seek.Notify");
|
||
status.set("description", "Seeking.");
|
||
sendReply("onStatus", nullptr, status);
|
||
|
||
auto milliSeconds = (uint32_t)(dec.load<AMFValue>().as_number());
|
||
InfoP(this) << "rtmp seekTo(ms):" << milliSeconds;
|
||
auto strong_src = _player_src.lock();
|
||
if (strong_src) {
|
||
strong_src->seekTo(milliSeconds);
|
||
}
|
||
}
|
||
|
||
void RtmpSession::onSendMedia(const RtmpPacket::Ptr &pkt) {
|
||
//rtmp播放器时间戳从零开始
|
||
int64_t dts_out;
|
||
_stamp[pkt->type_id % 2].revise(pkt->time_stamp, 0, dts_out, dts_out);
|
||
sendRtmp(pkt->type_id, pkt->stream_index, pkt, (uint32_t)dts_out, pkt->chunk_id);
|
||
}
|
||
|
||
|
||
bool RtmpSession::close(MediaSource &sender,bool force) {
|
||
//此回调在其他线程触发
|
||
if(!_publisher_src || (!force && _publisher_src->totalReaderCount())){
|
||
return false;
|
||
}
|
||
string err = StrPrinter << "close media:" << sender.getSchema() << "/" << sender.getVhost() << "/" << sender.getApp() << "/" << sender.getId() << " " << force;
|
||
safeShutdown(SockException(Err_shutdown,err));
|
||
return true;
|
||
}
|
||
|
||
int RtmpSession::totalReaderCount(MediaSource &sender) {
|
||
return _publisher_src ? _publisher_src->totalReaderCount() : sender.readerCount();
|
||
}
|
||
|
||
MediaOriginType RtmpSession::getOriginType(MediaSource &sender) const{
|
||
return MediaOriginType::rtmp_push;
|
||
}
|
||
|
||
string RtmpSession::getOriginUrl(MediaSource &sender) const {
|
||
return _media_info._full_url;
|
||
}
|
||
|
||
std::shared_ptr<SockInfo> RtmpSession::getOriginSock(MediaSource &sender) const {
|
||
return const_cast<RtmpSession *>(this)->shared_from_this();
|
||
}
|
||
|
||
void RtmpSession::setSocketFlags(){
|
||
GET_CONFIG(int, merge_write_ms, General::kMergeWriteMS);
|
||
if (merge_write_ms > 0) {
|
||
//推流模式下，关闭TCP_NODELAY会增加推流端的延时，但是服务器性能将提高
|
||
SockUtil::setNoDelay(getSock()->rawFD(), false);
|
||
//播放模式下，开启MSG_MORE会增加延时，但是能提高发送性能
|
||
setSendFlags(SOCKET_DEFAULE_FLAGS | FLAG_MORE);
|
||
}
|
||
}
|
||
|
||
void RtmpSession::dumpMetadata(const AMFValue &metadata) {
|
||
if (metadata.type() != AMF_OBJECT && metadata.type() != AMF_ECMA_ARRAY) {
|
||
WarnL << "invalid metadata type:" << metadata.type();
|
||
return;
|
||
}
|
||
_StrPrinter printer;
|
||
metadata.object_for_each([&](const string &key, const AMFValue &val) {
|
||
printer << "\r\n" << key << "\t:" << val.to_string();
|
||
});
|
||
InfoL << _media_info._vhost << " " << _media_info._app << " " << _media_info._streamid << (string) printer;
|
||
}
|
||
} /* namespace mediakit */
|