ZLMediaKit/webrtc/Sdp.cpp
2021-03-28 23:31:21 +08:00

798 lines
24 KiB
C++

//
// Created by xzl on 2021/3/27.
//
#include "Sdp.h"
#include <inttypes.h>
using onCreateSdpItem = function<SdpItem::Ptr(const string &key, const string &value)>;
static unordered_map<string, onCreateSdpItem> sdpItemCreator;
template <typename Item>
void registerSdpItem(){
onCreateSdpItem func = [](const string &key, const string &value) {
auto ret = std::make_shared<Item>();
ret->parse(value);
return ret;
};
Item item;
sdpItemCreator.emplace(item.getKey(), std::move(func));
}
class DirectionInterface {
public:
virtual RtpDirection getDirection() const = 0;
};
class SdpDirectionSendonly : public SdpItem, public DirectionInterface{
public:
const char* getKey() const override { return getRtpDirectionString(getDirection());}
RtpDirection getDirection() const override {return RtpDirection::sendonly;}
};
class SdpDirectionRecvonly : public SdpItem, public DirectionInterface{
public:
const char* getKey() const override { return getRtpDirectionString(getDirection());}
RtpDirection getDirection() const override {return RtpDirection::recvonly;}
};
class SdpDirectionSendrecv : public SdpItem, public DirectionInterface{
public:
const char* getKey() const override { return getRtpDirectionString(getDirection());}
RtpDirection getDirection() const override {return RtpDirection::sendrecv;}
};
class SdpDirectionInactive : public SdpItem, public DirectionInterface{
public:
const char* getKey() const override { return getRtpDirectionString(getDirection());}
RtpDirection getDirection() const override {return RtpDirection::inactive;}
};
static bool registerAllItem(){
registerSdpItem<SdpString<'v'> >();
registerSdpItem<SdpString<'s'> >();
registerSdpItem<SdpString<'i'> >();
registerSdpItem<SdpString<'u'> >();
registerSdpItem<SdpString<'e'> >();
registerSdpItem<SdpString<'p'> >();
registerSdpItem<SdpString<'z'> >();
registerSdpItem<SdpString<'k'> >();
registerSdpItem<SdpString<'r'> >();
registerSdpItem<SdpTime>();
registerSdpItem<SdpOrigin>();
registerSdpItem<SdpConnection>();
registerSdpItem<SdpBandwidth>();
registerSdpItem<SdpMedia>();
registerSdpItem<SdpAttr>();
registerSdpItem<SdpAttrGroup>();
registerSdpItem<SdpAttrMsidSemantic>();
registerSdpItem<SdpAttrRtcp>();
registerSdpItem<SdpAttrIceUfrag>();
registerSdpItem<SdpAttrIcePwd>();
registerSdpItem<SdpAttrIceOption>();
registerSdpItem<SdpAttrFingerprint>();
registerSdpItem<SdpAttrSetup>();
registerSdpItem<SdpAttrMid>();
registerSdpItem<SdpAttrExtmap>();
registerSdpItem<SdpAttrRtpMap>();
registerSdpItem<SdpAttrRtcpFb>();
registerSdpItem<SdpAttrFmtp>();
registerSdpItem<SdpAttrSSRC>();
registerSdpItem<SdpAttrSSRCGroup>();
registerSdpItem<SdpAttrSctpMap>();
registerSdpItem<SdpAttrCandidate>();
registerSdpItem<SdpDirectionSendonly>();
registerSdpItem<SdpDirectionRecvonly>();
registerSdpItem<SdpDirectionSendrecv>();
registerSdpItem<SdpDirectionInactive>();
return true;
}
TrackType getTrackType(const string &str){
if (str == "video") {
return TrackVideo;
}
if (str == "audio") {
return TrackAudio;
}
if (str == "application") {
return TrackApplication;
}
return TrackInvalid;
}
const char* getTrackString(TrackType type){
switch (type) {
case TrackVideo : return "video";
case TrackAudio : return "audio";
case TrackApplication : return "application";
default: return "invalid";
}
}
DtlsRole getDtlsRole(const string &str){
if (str == "active") {
return DtlsRole::active;
}
if (str == "passive") {
return DtlsRole::passive;
}
if (str == "actpass") {
return DtlsRole::actpass;
}
return DtlsRole::invalid;
}
const char* getDtlsRoleString(DtlsRole role){
switch (role) {
case DtlsRole::active : return "active";
case DtlsRole::passive : return "passive";
case DtlsRole::actpass : return "actpass";
default: return "invalid";
}
}
RtpDirection getRtpDirection(const string &str){
if (str == "sendonly") {
return RtpDirection::sendonly;
}
if (str == "recvonly") {
return RtpDirection::recvonly;
}
if (str == "sendrecv") {
return RtpDirection::sendrecv;
}
if (str == "inactive") {
return RtpDirection::inactive;
}
return RtpDirection::invalid;
}
const char* getRtpDirectionString(RtpDirection val){
switch (val) {
case RtpDirection::sendonly : return "sendonly";
case RtpDirection::recvonly : return "recvonly";
case RtpDirection::sendrecv : return "sendrecv";
case RtpDirection::inactive : return "inactive";
default: return "invalid";
}
}
//////////////////////////////////////////////////////////////////////////////////////////
void RtcSdp::parse(const string &str) {
static auto flag = registerAllItem();
RtcMedia *media = nullptr;
auto lines = split(str, "\n");
for(auto &line : lines){
trim(line);
if(line.size() < 3 || line[1] != '='){
continue;
}
auto key = line.substr(0, 1);
auto value = line.substr(2);
if (key == "m") {
medias.emplace_back(RtcMedia());
media = &medias.back();
}
SdpItem::Ptr item;
auto it = sdpItemCreator.find(key);
if (it != sdpItemCreator.end()) {
item = it->second(key, value);
} else {
item = std::make_shared<SdpCommon>(key);
item->parse(value);
}
if (media) {
media->items.push_back(std::move(item));
} else {
items.push_back(std::move(item));
}
}
}
string RtcSdp::toString() const {
_StrPrinter printer;
for (auto &item : items) {
printer << item->getKey() << "=" << item->toString() << "\r\n";
}
for (auto &media : medias) {
printer << media.toString();
}
return std::move(printer);
}
//////////////////////////////////////////////////////////////////////
string RtcMedia::toString() const {
_StrPrinter printer;
for (auto &item : items) {
printer << item->getKey() << "=" << item->toString() << "\r\n";
}
return std::move(printer);
}
RtpDirection RtcMedia::getDirection() const{
for (auto &item : items) {
auto attr = dynamic_pointer_cast<SdpAttr>(item);
if (attr) {
auto dir = dynamic_pointer_cast<DirectionInterface>(attr->detail);
if (dir) {
return dir->getDirection();
}
}
}
return RtpDirection::invalid;
}
//////////////////////////////////////////////////////////////////////////////////////////
#define SDP_THROW() throw std::invalid_argument(StrPrinter << "解析sdp " << getKey() << " 字段失败:" << str)
#define SDP_THROW2() throw std::invalid_argument(StrPrinter << "生成sdp " << getKey() << " 字段失败")
void SdpTime::parse(const string &str) {
if (sscanf(str.data(), "%" PRIu64 " %" PRIu64, &start, &stop) != 2) {
SDP_THROW();
}
}
string SdpTime::toString() const {
if (value.empty()) {
value = to_string(start) + " " + to_string(stop);
}
return SdpItem::toString();
}
void SdpOrigin::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() != 6) {
SDP_THROW();
}
username = vec[0];
session_id = vec[1];
session_version = vec[2];
nettype = vec[3];
addrtype = vec[4];
address = vec[6];
}
string SdpOrigin::toString() const {
if (value.empty()) {
value = username + " " + session_id + " " + session_version + " " + nettype + " " + addrtype + " " + address;
}
return SdpItem::toString();
}
void SdpConnection::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() != 3) {
SDP_THROW();
}
nettype = vec[0];
addrtype = vec[1];
address = vec[2];
}
string SdpConnection::toString() const {
if (value.empty()) {
value = nettype + " " + addrtype + " " + address;
}
return SdpItem::toString();
}
void SdpBandwidth::parse(const string &str) {
auto vec = split(str, ":");
if (vec.size() != 2) {
SDP_THROW();
}
bwtype = vec[0];
bandwidth = atoi(vec[1].data());
}
string SdpBandwidth::toString() const {
if (value.empty()) {
value = bwtype + ":" + to_string(bandwidth);
}
return SdpItem::toString();
}
void SdpMedia::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() < 4) {
SDP_THROW();
}
type = getTrackType(vec[0]);
if (type == TrackInvalid) {
SDP_THROW();
}
port = atoi(vec[1].data());
proto = vec[2];
for (int i = 3; i < vec.size(); ++i) {
auto pt = atoi(vec[i].data());
if (type != TrackApplication && pt > 0xFF) {
SDP_THROW();
}
fmts.emplace_back(pt);
}
}
string SdpMedia::toString() const {
if (value.empty()) {
value = string(getTrackString(type)) + " " + to_string(port) + " " + proto;
for (auto fmt : fmts) {
value += ' ';
value += to_string(fmt);
}
}
return SdpItem::toString();
}
void SdpAttr::parse(const string &str) {
auto pos = str.find(':');
auto key = pos == string::npos ? str : str.substr(0, pos);
auto value = pos == string::npos ? string() : str.substr(pos + 1);
auto it = sdpItemCreator.find(key);
if (it != sdpItemCreator.end()) {
detail = it->second(key, value);
} else {
detail = std::make_shared<SdpCommon>(key);
detail->parse(value);
}
}
string SdpAttr::toString() const {
if (value.empty()) {
auto detail_value = detail->toString();
if (detail_value.empty()) {
value = detail->getKey();
} else {
value = string(detail->getKey()) + ":" + detail_value;
}
}
return SdpItem::toString();
}
void SdpAttrGroup::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() < 2) {
SDP_THROW();
}
type = vec[0];
vec.erase(vec.begin());
mids = std::move(vec);
}
string SdpAttrGroup::toString() const {
if (value.empty()) {
value = type;
for (auto mid : mids) {
value += ' ';
value += mid;
}
}
return SdpItem::toString();
}
void SdpAttrMsidSemantic::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() < 1) {
SDP_THROW();
}
msid = vec[0];
token = vec.size() > 1 ? vec[1] : "";
}
string SdpAttrMsidSemantic::toString() const {
if (value.empty()) {
if (token.empty()) {
value = string(" ") + msid;
} else {
value = string(" ") + msid + " " + token;
}
}
return SdpItem::toString();
}
void SdpAttrRtcp::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() != 4) {
SDP_THROW();
}
port = atoi(vec[0].data());
nettype = vec[1];
addrtype = vec[2];
address = vec[3];
}
string SdpAttrRtcp::toString() const {
if (value.empty()) {
value = to_string(port) + " " + nettype + " " + addrtype + " " + address;
}
return SdpItem::toString();
}
void SdpAttrFingerprint::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() != 2) {
SDP_THROW();
}
algorithm = vec[0];
hash = vec[1];
}
string SdpAttrFingerprint::toString() const {
if (value.empty()) {
value = algorithm + " " + hash;
}
return SdpItem::toString();
}
void SdpAttrSetup::parse(const string &str) {
role = getDtlsRole(str);
if (role == DtlsRole::invalid) {
SDP_THROW();
}
}
string SdpAttrSetup::toString() const {
if (value.empty()) {
value = getDtlsRoleString(role);
}
return SdpItem::toString();
}
void SdpAttrExtmap::parse(const string &str) {
char buf[128] = {0};
if (sscanf(str.data(), "%" PRId32 " %127s", &index, buf) != 2) {
SDP_THROW();
}
ext = buf;
}
string SdpAttrExtmap::toString() const {
if (value.empty()) {
value = to_string(index) + " " + ext;
}
return SdpItem::toString();
}
void SdpAttrRtpMap::parse(const string &str) {
char buf[32] = {0};
if (sscanf(str.data(), "%" PRId8 " %31[^/]/%" PRId32 "/%" PRId32, &pt, buf, &sample_rate, &channel) != 4) {
if (sscanf(str.data(), "%" PRId8 " %31[^/]/%" PRId32, &pt, buf, &sample_rate) != 3) {
SDP_THROW();
}
}
codec = buf;
}
string SdpAttrRtpMap::toString() const {
if (value.empty()) {
value = to_string(pt) + " " + codec + "/" + to_string(sample_rate);
if (channel) {
value += '/';
value += to_string(channel);
}
}
return SdpItem::toString();
}
void SdpAttrRtcpFb::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() < 2) {
SDP_THROW();
}
pt = atoi(vec[0].data());
vec.erase(vec.begin());
arr = std::move(vec);
}
string SdpAttrRtcpFb::toString() const {
if (value.empty()) {
value = to_string(pt);
for (auto &item : arr) {
value += ' ';
value += item;
}
}
return SdpItem::toString();
}
void SdpAttrFmtp::parse(const string &str) {
auto pos = str.find(' ');
if (pos == string::npos) {
SDP_THROW();
}
pt = atoi(str.substr(0, pos).data());
auto vec = split(str.substr(pos + 1), ";");
for (auto &item : vec) {
trim(item);
auto pr_vec = split(item, "=");
if (pr_vec.size() != 2) {
SDP_THROW();
}
arr.emplace_back(std::make_pair(pr_vec[0], pr_vec[1]));
}
if (arr.empty()) {
SDP_THROW();
}
}
string SdpAttrFmtp::toString() const {
if (value.empty()) {
value = to_string(pt);
int i = 0;
for (auto &pr : arr) {
value += (i++ ? ';' : ' ');
value += pr.first + "=" + pr.second;
}
}
return SdpItem::toString();
}
void SdpAttrSSRC::parse(const string &str) {
char attr_buf[32] = {0};
char attr_val_buf[128] = {0};
if (3 == sscanf(str.data(), "%" PRIu32 " %31[^:]:%127[^\0]", &ssrc, attr_buf, attr_val_buf)) {
attribute = attr_buf;
attribute_value = attr_val_buf;
} else if (2 == sscanf(str.data(), "%" PRIu32 " %31s", &ssrc, attr_buf)) {
attribute = attr_buf;
} else {
SDP_THROW();
}
}
string SdpAttrSSRC::toString() const {
if (value.empty()) {
value = to_string(ssrc) + ' ';
value += attribute;
if (!attribute_value.empty()) {
value += ':';
value += attribute_value;
}
}
return SdpItem::toString();
}
void SdpAttrSSRCGroup::parse(const string &str) {
auto vec = split(str, " ");
if (vec.size() == 3) {
if (vec[0] != "FID") {
SDP_THROW();
}
type = std::move(vec[0]);
u.fid.rtp_ssrc = atoi(vec[1].data());
u.fid.rtx_ssrc = atoi(vec[2].data());
} else if (vec.size() == 4) {
if (vec[0] != "SIM") {
SDP_THROW();
}
type = std::move(vec[0]);
u.sim.rtp_ssrc_low = atoi(vec[1].data());
u.sim.rtp_ssrc_mid = atoi(vec[2].data());
u.sim.rtp_ssrc_high = atoi(vec[3].data());
} else {
SDP_THROW();
}
}
string SdpAttrSSRCGroup::toString() const {
if (value.empty()) {
if (type == "FID") {
value = type + " " + to_string(u.fid.rtp_ssrc) + " " + to_string(u.fid.rtx_ssrc);
} else if (type == "SIM") {
value = type + " " + to_string(u.sim.rtp_ssrc_low) + " " + to_string(u.sim.rtp_ssrc_mid) + " " + to_string(u.sim.rtp_ssrc_high);
} else {
SDP_THROW2();
}
}
return SdpItem::toString();
}
void SdpAttrSctpMap::parse(const string &str) {
char subtypes_buf[64] = {0};
if (3 == sscanf(str.data(), "%" PRIu16 " %63[^ ] %" PRId32, &port, subtypes_buf, &streams)) {
subtypes = subtypes_buf;
} else {
SDP_THROW();
}
}
string SdpAttrSctpMap::toString() const {
if (value.empty()) {
value = to_string(port);
value += ' ';
value += subtypes;
value += ' ';
value += to_string(streams);
}
return SdpItem::toString();
}
void SdpAttrCandidate::parse(const string &str) {
char transport_buf[16] = {0};
char address_buf[32] = {0};
char type_buf[16] = {0};
if (7 != sscanf(str.data(), "%" PRIu32 " %" PRIu32 " %15[^ ] %" PRIu32 " %31[^ ] %" PRIu16 " typ %15[^ \0]",
&foundation, &component, transport_buf, &priority, address_buf, &port, type_buf)) {
SDP_THROW();
}
transport = transport_buf;
address = address_buf;
type = type_buf;
auto pos = str.find(type);
if (pos != string::npos) {
auto remain = str.substr(pos + type.size());
trim(remain);
if (!remain.empty()) {
auto vec = split(remain, " ");
string key;
for (auto &item : vec) {
if (key.empty()) {
key = item;
} else {
arr.emplace_back(std::make_pair(std::move(key), std::move(item)));
}
}
}
}
}
string SdpAttrCandidate::toString() const {
if (value.empty()) {
value = to_string(foundation) + " " + to_string(component) + " " + transport + " " + to_string(priority) +
" " + address + " " + to_string(port) + " typ " + type;
for (auto &pr : arr) {
value += ' ';
value += pr.first;
value += ' ';
value += pr.second;
}
}
return SdpItem::toString();
}
void test_sdp(){
char str1[] = "v=0\n"
"o=- 380154348540553537 2 IN IP4 127.0.0.1\n"
"s=-\n"
"b=CT:1900\n"
"t=0 0\n"
"a=group:BUNDLE video\n"
"a=msid-semantic: WMS\n"
"m=video 9 RTP/SAVPF 96\n"
"c=IN IP4 0.0.0.0\n"
"a=rtcp:9 IN IP4 0.0.0.0\n"
"a=ice-ufrag:1ZFN\n"
"a=ice-pwd:70P3H0jPlGz1fiJl5XZfXMZH\n"
"a=ice-options:trickle\n"
"a=fingerprint:sha-256 3E:10:35:6B:9A:9E:B0:55:AC:2A:88:F5:74:C1:70:32:B5:8D:88:1D:37:B0:9C:69:A6:DD:07:10:73:27:1A:16\n"
"a=setup:active\n"
"a=mid:video\n"
"a=recvonly\n"
"a=rtcp-mux\n"
"a=rtpmap:96 H264/90000\n"
"a=fmtp:96 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f";
char str2[] = "v=0\n"
"o=- 2584450093346841581 2 IN IP4 127.0.0.1\n"
"s=-\n"
"t=0 0\n"
"a=group:BUNDLE audio video data\n"
"a=msid-semantic: WMS 616cfbb1-33a3-4d8c-8275-a199d6005549\n"
"m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126\n"
"c=IN IP4 0.0.0.0\n"
"a=rtcp:9 IN IP4 0.0.0.0\n"
"a=ice-ufrag:sXJ3\n"
"a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV\n"
"a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79\n"
"a=setup:actpass\n"
"a=mid:audio\n"
"a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\n"
"a=sendrecv\n"
"a=rtcp-mux\n"
"a=rtpmap:111 opus/48000/2\n"
"a=rtcp-fb:111 transport-cc\n"
"a=fmtp:111 minptime=10;useinbandfec=1\n"
"a=rtpmap:103 ISAC/16000\n"
"a=rtpmap:104 ISAC/32000\n"
"a=rtpmap:9 G722/8000\n"
"a=rtpmap:0 PCMU/8000\n"
"a=rtpmap:8 PCMA/8000\n"
"a=rtpmap:106 CN/32000\n"
"a=rtpmap:105 CN/16000\n"
"a=rtpmap:13 CN/8000\n"
"a=rtpmap:110 telephone-event/48000\n"
"a=rtpmap:112 telephone-event/32000\n"
"a=rtpmap:113 telephone-event/16000\n"
"a=rtpmap:126 telephone-event/8000\n"
"a=ssrc:120276603 cname:iSkJ2vn5cYYubTve\n"
"a=ssrc:120276603 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 1da3d329-7399-4fe9-b20f-69606bebd363\n"
"a=ssrc:120276603 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549\n"
"a=ssrc:120276603 label:1da3d329-7399-4fe9-b20f-69606bebd363\n"
"m=video 9 UDP/TLS/RTP/SAVPF 96 98 100 102 127 97 99 101 125\n"
"c=IN IP4 0.0.0.0\n"
"a=rtcp:9 IN IP4 0.0.0.0\n"
"a=ice-ufrag:sXJ3\n"
"a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV\n"
"a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79\n"
"a=setup:actpass\n"
"a=mid:video\n"
"a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n"
"a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\n"
"a=extmap:4 urn:3gpp:video-orientation\n"
"a=extmap:5 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\n"
"a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\n"
"a=sendrecv\n"
"a=rtcp-mux\n"
"a=rtcp-rsize\n"
"a=rtpmap:96 VP8/90000\n"
"a=rtcp-fb:96 ccm fir\n"
"a=rtcp-fb:96 nack\n"
"a=rtcp-fb:96 nack pli\n"
"a=rtcp-fb:96 goog-remb\n"
"a=rtcp-fb:96 transport-cc\n"
"a=rtpmap:98 VP9/90000\n"
"a=rtcp-fb:98 ccm fir\n"
"a=rtcp-fb:98 nack\n"
"a=rtcp-fb:98 nack pli\n"
"a=rtcp-fb:98 goog-remb\n"
"a=rtcp-fb:98 transport-cc\n"
"a=rtpmap:100 H264/90000\n"
"a=rtcp-fb:100 ccm fir\n"
"a=rtcp-fb:100 nack\n"
"a=rtcp-fb:100 nack pli\n"
"a=rtcp-fb:100 goog-remb\n"
"a=rtcp-fb:100 transport-cc\n"
"a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\n"
"a=rtpmap:102 red/90000\n"
"a=rtpmap:127 ulpfec/90000\n"
"a=rtpmap:97 rtx/90000\n"
"a=fmtp:97 apt=96\n"
"a=rtpmap:99 rtx/90000\n"
"a=fmtp:99 apt=98\n"
"a=rtpmap:101 rtx/90000\n"
"a=fmtp:101 apt=100\n"
"a=rtpmap:125 rtx/90000\n"
"a=fmtp:125 apt=102\n"
"a=ssrc-group:FID 2580761338 611523443\n"
"a=ssrc:2580761338 cname:iSkJ2vn5cYYubTve\n"
"a=ssrc:2580761338 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 bf270496-a23e-47b5-b901-ef23096cd961\n"
"a=ssrc:2580761338 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549\n"
"a=ssrc:2580761338 label:bf270496-a23e-47b5-b901-ef23096cd961\n"
"a=ssrc:611523443 cname:iSkJ2vn5cYYubTve\n"
"a=ssrc:611523443 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 bf270496-a23e-47b5-b901-ef23096cd961\n"
"a=ssrc:611523443 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549\n"
"a=ssrc:611523443 label:bf270496-a23e-47b5-b901-ef23096cd961\n"
"a=candidate:3575467457 1 udp 2113937151 10.15.83.23 57857 typ host generation 0 ufrag 6R0z network-cost 999\n"
"m=application 9 DTLS/SCTP 5000\n"
"c=IN IP4 0.0.0.0\n"
"a=ice-ufrag:sXJ3\n"
"a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV\n"
"a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79\n"
"a=setup:actpass\n"
"a=mid:data\n"
"a=sctpmap:5000 webrtc-datachannel 1024\n"
"a=sctp-port:5000";
RtcSdp sdp1;
sdp1.parse(str1);
RtcSdp sdp2;
sdp2.parse(str2);
for (auto media : sdp1.medias) {
InfoL << getRtpDirectionString(media.getDirection());
}
for (auto media : sdp2.medias) {
InfoL << getRtpDirectionString(media.getDirection());
}
InfoL << sdp1.toString();
InfoL << sdp2.toString();
}