完善

webrtc/Sdp.cpp

@@ -468,6 +468,33 @@ string SdpAttrRtcp::toString() const  {
     return SdpItem::toString();
 }
 
+void SdpAttrIceOption::parse(const string &str){
+    auto vec = split(str, " ");
+    for (auto &v : vec) {
+        if (!strcasecmp(v.data(), "trickle")) {
+            trickle = true;
+            continue;
+        }
+        if (!strcasecmp(v.data(), "renomination")) {
+            renomination = true;
+            continue;
+        }
+    }
+}
+
+string SdpAttrIceOption::toString() const{
+    if (value.empty()) {
+        if (trickle && renomination) {
+            value = "trickle renomination";
+        } else if (trickle) {
+            value = "trickle";
+        } else if (renomination) {
+            value = "renomination";
+        }
+    }
+    return value;
+}
+
 void SdpAttrFingerprint::parse(const string &str)  {
     auto vec = split(str, " ");
     if (vec.size() != 2) {
@@ -751,9 +778,10 @@ void RtcSession::loadFrom(const string &str) {
         rtc_media.ice_pwd = media.getStringItem('a', "ice-pwd");
         rtc_media.role = media.getItemClass<SdpAttrSetup>('a', "setup").role;
         rtc_media.fingerprint = media.getItemClass<SdpAttrFingerprint>('a', "fingerprint");
-        rtc_media.ice_trickle = media.getItem('a', "ice-trickle").operator bool();
         rtc_media.ice_lite = media.getItem('a', "ice-lite").operator bool();
-        rtc_media.ice_renomination = media.getItem('a', "ice-renomination").operator bool();
+        auto ice_options = media.getItemClass<SdpAttrIceOption>('a', "ice-options");
+        rtc_media.ice_trickle = ice_options.trickle;
+        rtc_media.ice_renomination = ice_options.renomination;
         rtc_media.candidate = media.getAllItem<SdpAttrCandidate>('a', "candidate");
 
         if (mline.type == TrackType::TrackApplication) {
@@ -922,15 +950,15 @@ string RtcSession::toString() const{
         sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpAttrIcePwd>(m.ice_pwd)));
         sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpAttrFingerprint>(m.fingerprint)));
         sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpAttrSetup>(m.role)));
-        if (m.ice_trickle) {
-            sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpCommon>("ice-trickle")));
+        if (m.ice_trickle || m.ice_renomination) {
+            auto attr = std::make_shared<SdpAttrIceOption>();
+            attr->trickle = m.ice_trickle;
+            attr->renomination = m.ice_renomination;
+            sdp_media.items.emplace_back(wrapSdpAttr(attr));
         }
         if (m.ice_lite) {
             sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpCommon>("ice-lite")));
         }
-        if (m.ice_renomination) {
-            sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpCommon>("ice-renomination")));
-        }
         for (auto &ext : m.extmap) {
             sdp_media.items.emplace_back(wrapSdpAttr(std::make_shared<SdpAttrExtmap>(ext)));
         }
@@ -1215,8 +1243,8 @@ shared_ptr<RtcSession> RtcConfigure::createAnswer(const RtcSession &offer){
     ret->session_info = "zlmediakit_webrtc_session";
     ret->connection.parse("IN IP4 0.0.0.0");
     ret->msid_semantic.parse("WMS *");
-    matchMedia(ret, TrackVideo, offer.media, video);
     matchMedia(ret, TrackAudio, offer.media, audio);
+    matchMedia(ret, TrackVideo, offer.media, video);
     matchMedia(ret, TrackApplication, offer.media, application);
     return ret;
 }

webrtc/Sdp.h

@@ -282,6 +282,10 @@ public:
 class SdpAttrIceOption : public SdpItem {
 public:
     //a=ice-options:trickle
+    bool trickle{false};
+    bool renomination{false};
+    void parse(const string &str) override;
+    string toString() const override;
     const char* getKey() const override { return "ice-options";}
 };
 

webrtc/WebRtcTransport.cpp

@@ -78,7 +78,7 @@ string getFingerprint(const string &algorithm_str, const std::shared_ptr<RTC::Dt
 }
 
 std::string WebRtcTransport::getAnswerSdp(const string &offer){
-    InfoL << offer;
+//    InfoL << offer;
     _offer_sdp = std::make_shared<RtcSession>();
     _offer_sdp->loadFrom(offer);
 

webrtc/answer.sdp

+ v=0
+o=- 0 0 IN IP4 0.0.0.0
+s=zlmediakit_webrtc_session
+i=zlmediakit_webrtc_session
+t=0 0
+c=IN IP4 0.0.0.0
+a=msid-semantic: WMS *
+a=group:BUNDLE 0 1
+m=audio 0 UDP/TLS/RTP/SAVPF 111
+a=mid:0
+c=IN IP4 0.0.0.0
+a=ice-ufrag:PdK3
+a=ice-pwd:PdK31zZ1sKhPU2ACzP5av37f
+a=fingerprint:sha-256 D1:4F:7B:70:86:99:BE:1E:7E:B8:C7:0F:13:BC:78:C4:6A:F9:2C:F6:F3:5E:42:11:0F:1C:74:18:F6:DD:95:75
+a=setup:passive
+a=ice-options:trickle
+a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
+a=recvonly
+a=rtcp-mux
+a=rtpmap:111 opus/48000/2
+a=rtcp-fb:111 transport-cc
+a=fmtp:111 minptime=10;useinbandfec=1
+m=video 0 UDP/TLS/RTP/SAVPF 102 121
+a=mid:1
+c=IN IP4 0.0.0.0
+a=ice-ufrag:PdK3
+a=ice-pwd:PdK31zZ1sKhPU2ACzP5av37f
+a=fingerprint:sha-256 D1:4F:7B:70:86:99:BE:1E:7E:B8:C7:0F:13:BC:78:C4:6A:F9:2C:F6:F3:5E:42:11:0F:1C:74:18:F6:DD:95:75
+a=setup:passive
+a=ice-options:trickle
+a=extmap:14 urn:ietf:params:rtp-hdrext:toffset
+a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
+a=extmap:13 urn:3gpp:video-orientation
+a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
+a=extmap:12 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
+a=recvonly
+a=rtcp-mux
+a=rtpmap:102 H264/90000
+a=rtcp-fb:102 goog-remb
+a=rtcp-fb:102 transport-cc
+a=rtcp-fb:102 ccm fir
+a=rtcp-fb:102 nack
+a=rtcp-fb:102 nack pli
+a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
+a=rtpmap:121 rtx/90000
+a=fmtp:121 apt=102
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