直接上代码：源码

void doRtspParse(char *b) {std::vector<std::string> res;char *ptr = b, *ptr1 = nullptr;while ((ptr1 = strstr(ptr, "\r\n"))) {res.push_back(std::string(ptr, ptr1 - ptr));ptr = ptr1 + 2;}int len = ptr - b;b[len - 1] = '\0';Debug("%d read --> \n%s", len, b);switch (cmd_) {case OPTIONS: {auto it = std::find_if(res.begin(), res.end(), [&](std::string &s) {return s.find("WWW-Authenticate") != std::string::npos;});if (it == res.end()) {doWriteCmd(DESCRIBE, seq_++, url_.GetAuth("DESCRIBE").c_str());} else {url_.SetAuth(it->c_str());doWriteCmd(OPTIONS, seq_++, url_.GetAuth("OPTIONS").c_str());}break;};case DESCRIBE: {sdp_.Parse(res);this->decode_ = Unmarshal264;if (sdp_.medias[0].rtpmap.find("H265") != std::string::npos) {this->decode_ = Unmarshal265;}doWriteCmd(SETUP, sdp_.medias[0].id.c_str(), seq_++, sdp_.session.c_str(),url_.GetAuth("SETUP").c_str());if (atype_ == 0xff) {cmd_ = SETAUDIO;}break;};case SETUP:doWriteCmd(PLAY, seq_++, sdp_.session.c_str(),url_.GetAuth("PLAY").c_str());break;case SETAUDIO: {auto it = std::find_if(sdp_.medias.begin(), sdp_.medias.end(),[](sdp::media &m) {return m.id.find("audio") != std::string::npos;});if (it == sdp_.medias.end()) {doWriteCmd(PLAY, seq_++, sdp_.session.c_str(),url_.GetAuth("PLAY").c_str());} else {atype_ = it->format;doWriteCmd(SETUP, it->id.c_str(), seq_++, sdp_.session.c_str(),url_.GetAuth("SETUP").c_str());}} break;default:rbuf_.Remove(len);return;}rbuf_.Reset(0);}