mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-01 17:11:31 +08:00
486 lines
15 KiB
C++
486 lines
15 KiB
C++
//
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// Created by xzl on 2019/3/27.
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//
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#include "Util/MD5.h"
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#include "Util/base64.h"
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#include "RtspPusher.h"
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#include "RtspSession.h"
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using namespace mediakit::Client;
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namespace mediakit {
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RtspPusher::RtspPusher(const EventPoller::Ptr &poller,const RtspMediaSource::Ptr &src) : TcpClient(poller){
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_pMediaSrc = src;
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}
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RtspPusher::~RtspPusher() {
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teardown();
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DebugL << endl;
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}
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void RtspPusher::teardown() {
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if (alive()) {
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sendRtspRequest("TEARDOWN" ,_strContentBase);
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shutdown(SockException(Err_shutdown,"teardown"));
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}
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reset();
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CLEAR_ARR(_apUdpSock);
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_rtspMd5Nonce.clear();
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_rtspRealm.clear();
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_aTrackInfo.clear();
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_strSession.clear();
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_strContentBase.clear();
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_strSession.clear();
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_uiCseq = 1;
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_pPublishTimer.reset();
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_pBeatTimer.reset();
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_pRtspReader.reset();
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_aTrackInfo.clear();
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_onHandshake = nullptr;
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}
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void RtspPusher::publish(const string &strUrl) {
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auto userAndPwd = FindField(strUrl.data(),"://","@");
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Rtsp::eRtpType eType = (Rtsp::eRtpType)(int)(*this)[ kRtpType];
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if(userAndPwd.empty()){
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publish(strUrl,"","",eType);
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return;
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}
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auto suffix = FindField(strUrl.data(),"@",nullptr);
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auto url = StrPrinter << "rtsp://" << suffix << endl;
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if(userAndPwd.find(":") == string::npos){
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publish(url,userAndPwd,"",eType);
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return;
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}
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auto user = FindField(userAndPwd.data(),nullptr,":");
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auto pwd = FindField(userAndPwd.data(),":",nullptr);
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publish(url,user,pwd,eType);
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}
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void RtspPusher::onPublishResult(const SockException &ex) {
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if(_pPublishTimer){
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//播放结果回调
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_pPublishTimer.reset();
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if(_onPublished){
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_onPublished(ex);
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}
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} else {
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//播放成功后异常断开回调
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if(_onShutdown){
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_onShutdown(ex);
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}
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}
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if(ex){
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teardown();
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}
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}
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void RtspPusher::publish(const string & strUrl, const string &strUser, const string &strPwd, Rtsp::eRtpType eType ) {
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DebugL << strUrl << " "
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<< (strUser.size() ? strUser : "null") << " "
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<< (strPwd.size() ? strPwd:"null") << " "
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<< eType;
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teardown();
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if(strUser.size()){
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(*this)[kRtspUser] = strUser;
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}
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if(strPwd.size()){
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(*this)[kRtspPwd] = strPwd;
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(*this)[kRtspPwdIsMD5] = false;
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}
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_eType = eType;
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auto ip = FindField(strUrl.data(), "://", "/");
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if (!ip.size()) {
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ip = FindField(strUrl.data(), "://", NULL);
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}
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auto port = atoi(FindField(ip.data(), ":", NULL).data());
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if (port <= 0) {
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//rtsp 默认端口554
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port = 554;
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} else {
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//服务器域名
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ip = FindField(ip.data(), NULL, ":");
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}
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_strUrl = strUrl;
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weak_ptr<RtspPusher> weakSelf = dynamic_pointer_cast<RtspPusher>(shared_from_this());
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float playTimeOutSec = (*this)[kTimeoutMS].as<int>() / 1000.0;
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_pPublishTimer.reset( new Timer(playTimeOutSec, [weakSelf]() {
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auto strongSelf=weakSelf.lock();
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if(!strongSelf) {
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return false;
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}
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strongSelf->onPublishResult(SockException(Err_timeout,"publish rtsp timeout"));
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return false;
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},getPoller()));
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if(!(*this)[kNetAdapter].empty()){
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setNetAdapter((*this)[kNetAdapter]);
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}
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startConnect(ip, port , playTimeOutSec);
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}
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void RtspPusher::onErr(const SockException &ex) {
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onPublishResult(ex);
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}
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void RtspPusher::onConnect(const SockException &err) {
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if(err) {
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onPublishResult(err);
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return;
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}
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//推流器不需要多大的接收缓存，节省内存占用
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_sock->setReadBuffer(std::make_shared<BufferRaw>(1 * 1024));
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sendAnnounce();
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}
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void RtspPusher::onRecv(const Buffer::Ptr &pBuf){
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try {
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input(pBuf->data(), pBuf->size());
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} catch (exception &e) {
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SockException ex(Err_other, e.what());
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onPublishResult(ex);
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}
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}
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void RtspPusher::onWholeRtspPacket(Parser &parser) {
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decltype(_onHandshake) fun;
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_onHandshake.swap(fun);
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if(fun){
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fun(parser);
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}
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parser.Clear();
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}
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void RtspPusher::sendAnnounce() {
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auto src = _pMediaSrc.lock();
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if (!src) {
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throw std::runtime_error("the media source was released");
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}
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//解析sdp
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_sdpParser.load(src->getSdp());
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_aTrackInfo = _sdpParser.getAvailableTrack();
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if (_aTrackInfo.empty()) {
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throw std::runtime_error("无有效的Sdp Track");
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}
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_onHandshake = std::bind(&RtspPusher::handleResAnnounce,this, placeholders::_1);
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sendRtspRequest("ANNOUNCE",_strUrl,{},src->getSdp());
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}
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void RtspPusher::handleResAnnounce(const Parser &parser) {
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string authInfo = parser["WWW-Authenticate"];
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//发送DESCRIBE命令后的回复
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if ((parser.Url() == "401") && handleAuthenticationFailure(authInfo)) {
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sendAnnounce();
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return;
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}
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if(parser.Url() == "302"){
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auto newUrl = parser["Location"];
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if(newUrl.empty()){
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throw std::runtime_error("未找到Location字段(跳转url)");
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}
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publish(newUrl);
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return;
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}
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if (parser.Url() != "200") {
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throw std::runtime_error(StrPrinter << "ANNOUNCE:" << parser.Url() << " " << parser.Tail());
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}
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_strContentBase = parser["Content-Base"];
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if(_strContentBase.empty()){
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_strContentBase = _strUrl;
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}
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if (_strContentBase.back() == '/') {
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_strContentBase.pop_back();
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}
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sendSetup(0);
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}
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bool RtspPusher::handleAuthenticationFailure(const string ¶msStr) {
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if(!_rtspRealm.empty()){
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//已经认证过了
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return false;
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}
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char *realm = new char[paramsStr.size()];
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char *nonce = new char[paramsStr.size()];
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char *stale = new char[paramsStr.size()];
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onceToken token(nullptr,[&](){
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delete[] realm;
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delete[] nonce;
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delete[] stale;
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});
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if (sscanf(paramsStr.data(), "Digest realm=\"%[^\"]\", nonce=\"%[^\"]\", stale=%[a-zA-Z]", realm, nonce, stale) == 3) {
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_rtspRealm = (const char *)realm;
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_rtspMd5Nonce = (const char *)nonce;
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return true;
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}
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if (sscanf(paramsStr.data(), "Digest realm=\"%[^\"]\", nonce=\"%[^\"]\"", realm, nonce) == 2) {
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_rtspRealm = (const char *)realm;
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_rtspMd5Nonce = (const char *)nonce;
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return true;
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}
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if (sscanf(paramsStr.data(), "Basic realm=\"%[^\"]\"", realm) == 1) {
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_rtspRealm = (const char *)realm;
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return true;
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}
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return false;
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}
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//有必要的情况下创建udp端口
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void RtspPusher::createUdpSockIfNecessary(int track_idx){
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auto &rtpSockRef = _apUdpSock[track_idx];
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if(!rtpSockRef){
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rtpSockRef.reset(new Socket(getPoller()));
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//rtp随机端口
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if (!rtpSockRef->bindUdpSock(0, get_local_ip().data())) {
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rtpSockRef.reset();
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throw std::runtime_error("open rtp sock failed");
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}
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}
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}
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void RtspPusher::sendSetup(unsigned int trackIndex) {
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_onHandshake = std::bind(&RtspPusher::handleResSetup,this, placeholders::_1,trackIndex);
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auto &track = _aTrackInfo[trackIndex];
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auto baseUrl = _strContentBase + "/" + track->_control_surffix;
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switch (_eType) {
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case Rtsp::RTP_TCP: {
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sendRtspRequest("SETUP",baseUrl,{"Transport",StrPrinter << "RTP/AVP/TCP;unicast;interleaved=" << track->_type * 2 << "-" << track->_type * 2 + 1});
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}
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break;
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case Rtsp::RTP_UDP: {
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createUdpSockIfNecessary(trackIndex);
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int port = _apUdpSock[trackIndex]->get_local_port();
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sendRtspRequest("SETUP",baseUrl,{"Transport",StrPrinter << "RTP/AVP;unicast;client_port=" << port << "-" << port + 1});
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}
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break;
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default:
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break;
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}
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}
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void RtspPusher::handleResSetup(const Parser &parser, unsigned int uiTrackIndex) {
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if (parser.Url() != "200") {
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throw std::runtime_error(
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StrPrinter << "SETUP:" << parser.Url() << " " << parser.Tail() << endl);
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}
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if (uiTrackIndex == 0) {
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_strSession = parser["Session"];
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_strSession.append(";");
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_strSession = FindField(_strSession.data(), nullptr, ";");
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}
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auto strTransport = parser["Transport"];
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if(strTransport.find("TCP") != string::npos || strTransport.find("interleaved") != string::npos){
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_eType = Rtsp::RTP_TCP;
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string interleaved = FindField( FindField((strTransport + ";").data(), "interleaved=", ";").data(), NULL, "-");
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_aTrackInfo[uiTrackIndex]->_interleaved = atoi(interleaved.data());
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}else if(strTransport.find("multicast") != string::npos){
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throw std::runtime_error("SETUP rtsp pusher can not support multicast!");
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}else{
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_eType = Rtsp::RTP_UDP;
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createUdpSockIfNecessary(uiTrackIndex);
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const char *strPos = "server_port=" ;
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auto port_str = FindField((strTransport + ";").data(), strPos, ";");
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uint16_t port = atoi(FindField(port_str.data(), NULL, "-").data());
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struct sockaddr_in rtpto;
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rtpto.sin_port = ntohs(port);
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rtpto.sin_family = AF_INET;
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rtpto.sin_addr.s_addr = inet_addr(get_peer_ip().data());
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_apUdpSock[uiTrackIndex]->setSendPeerAddr((struct sockaddr *)&(rtpto));
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}
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RtspSplitter::enableRecvRtp(_eType == Rtsp::RTP_TCP);
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if (uiTrackIndex < _aTrackInfo.size() - 1) {
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//需要继续发送SETUP命令
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sendSetup(uiTrackIndex + 1);
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return;
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}
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sendRecord();
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}
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void RtspPusher::sendOptions() {
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_onHandshake = [this](const Parser& parser){};
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sendRtspRequest("OPTIONS",_strContentBase);
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}
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inline void RtspPusher::sendRtpPacket(const RtpPacket::Ptr & pkt) {
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//InfoL<<(int)pkt.Interleaved;
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switch (_eType) {
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case Rtsp::RTP_TCP: {
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BufferRtp::Ptr buffer(new BufferRtp(pkt));
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send(buffer);
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}
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break;
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case Rtsp::RTP_UDP: {
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int iTrackIndex = getTrackIndexByTrackType(pkt->type);
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auto &pSock = _apUdpSock[iTrackIndex];
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if (!pSock) {
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shutdown(SockException(Err_shutdown,"udp sock not opened yet"));
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return;
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}
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BufferRtp::Ptr buffer(new BufferRtp(pkt,4));
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pSock->send(buffer);
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}
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break;
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default:
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break;
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}
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}
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inline int RtspPusher::getTrackIndexByTrackType(TrackType type) {
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for (unsigned int i = 0; i < _aTrackInfo.size(); i++) {
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if (type == _aTrackInfo[i]->_type) {
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return i;
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}
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}
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if(_aTrackInfo.size() == 1){
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return 0;
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}
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return -1;
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}
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void RtspPusher::sendRecord() {
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_onHandshake = [this](const Parser& parser){
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auto src = _pMediaSrc.lock();
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if (!src) {
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throw std::runtime_error("the media source was released");
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}
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_pRtspReader = src->getRing()->attach(getPoller());
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weak_ptr<RtspPusher> weakSelf = dynamic_pointer_cast<RtspPusher>(shared_from_this());
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_pRtspReader->setReadCB([weakSelf](const RtpPacket::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->sendRtpPacket(pkt);
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});
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_pRtspReader->setDetachCB([weakSelf](){
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auto strongSelf = weakSelf.lock();
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if(strongSelf){
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strongSelf->onPublishResult(SockException(Err_other,"媒体源被释放"));
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}
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});
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if(_eType != Rtsp::RTP_TCP){
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/////////////////////////心跳/////////////////////////////////
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weak_ptr<RtspPusher> weakSelf = dynamic_pointer_cast<RtspPusher>(shared_from_this());
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_pBeatTimer.reset(new Timer((*this)[kBeatIntervalMS].as<int>() / 1000.0, [weakSelf](){
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auto strongSelf = weakSelf.lock();
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if (!strongSelf){
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return false;
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}
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strongSelf->sendOptions();
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return true;
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},getPoller()));
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}
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onPublishResult(SockException(Err_success,"success"));
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//提升发送性能
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setSocketFlags();
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};
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sendRtspRequest("RECORD",_strContentBase,{"Range","npt=0.000-"});
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}
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void RtspPusher::setSocketFlags(){
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GET_CONFIG(bool,ultraLowDelay,General::kUltraLowDelay);
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if(!ultraLowDelay) {
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//提高发送性能
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(*this) << SocketFlags(SOCKET_DEFAULE_FLAGS | FLAG_MORE);
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SockUtil::setNoDelay(_sock->rawFD(), false);
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}
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}
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void RtspPusher::sendRtspRequest(const string &cmd, const string &url, const std::initializer_list<string> &header,const string &sdp ) {
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string key;
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StrCaseMap header_map;
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int i = 0;
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for(auto &val : header){
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if(++i % 2 == 0){
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header_map.emplace(key,val);
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}else{
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key = val;
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}
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}
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sendRtspRequest(cmd,url,header_map,sdp);
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}
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void RtspPusher::sendRtspRequest(const string &cmd, const string &url,const StrCaseMap &header_const,const string &sdp ) {
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auto header = header_const;
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header.emplace("CSeq",StrPrinter << _uiCseq++);
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header.emplace("User-Agent",SERVER_NAME "(build in " __DATE__ " " __TIME__ ")");
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if(!_strSession.empty()){
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header.emplace("Session",_strSession);
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}
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if(!_rtspRealm.empty() && !(*this)[kRtspUser].empty()){
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if(!_rtspMd5Nonce.empty()){
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//MD5认证
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/*
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response计算方法如下：
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RTSP客户端应该使用username + password并计算response如下:
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(1)当password为MD5编码,则
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response = md5( password:nonce:md5(public_method:url) );
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(2)当password为ANSI字符串,则
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response= md5( md5(username:realm:password):nonce:md5(public_method:url) );
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*/
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string encrypted_pwd = (*this)[kRtspPwd];
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if(!(*this)[kRtspPwdIsMD5].as<bool>()){
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encrypted_pwd = MD5((*this)[kRtspUser]+ ":" + _rtspRealm + ":" + encrypted_pwd).hexdigest();
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}
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auto response = MD5( encrypted_pwd + ":" + _rtspMd5Nonce + ":" + MD5(cmd + ":" + url).hexdigest()).hexdigest();
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_StrPrinter printer;
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printer << "Digest ";
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printer << "username=\"" << (*this)[kRtspUser] << "\", ";
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printer << "realm=\"" << _rtspRealm << "\", ";
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printer << "nonce=\"" << _rtspMd5Nonce << "\", ";
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printer << "uri=\"" << url << "\", ";
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printer << "response=\"" << response << "\"";
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header.emplace("Authorization",printer);
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}else if(!(*this)[kRtspPwdIsMD5].as<bool>()){
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//base64认证
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string authStr = StrPrinter << (*this)[kRtspUser] << ":" << (*this)[kRtspPwd];
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char authStrBase64[1024] = {0};
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av_base64_encode(authStrBase64,sizeof(authStrBase64),(uint8_t *)authStr.data(),authStr.size());
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header.emplace("Authorization",StrPrinter << "Basic " << authStrBase64 );
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}
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}
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if(!sdp.empty()){
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header.emplace("Content-Length",StrPrinter << sdp.size());
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header.emplace("Content-Type","application/sdp");
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}
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_StrPrinter printer;
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printer << cmd << " " << url << " RTSP/1.0\r\n";
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for (auto &pr : header){
|
||
printer << pr.first << ": " << pr.second << "\r\n";
|
||
}
|
||
|
||
printer << "\r\n";
|
||
|
||
if(!sdp.empty()){
|
||
printer << sdp;
|
||
}
|
||
send(printer);
|
||
}
|
||
|
||
|
||
} /* namespace mediakit */ |