diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index 04f40c53..0831a1cf 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1447,16 +1447,14 @@ void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
     }
 }
 
-void RtcConfigure::setDefaultSetting(string ice_ufrag,
-                                     string ice_pwd,
-                                     RtpDirection direction,
+void RtcConfigure::setDefaultSetting(string ice_ufrag, string ice_pwd, RtpDirection direction,
                                      const SdpAttrFingerprint &fingerprint) {
     video.setDefaultSetting(TrackVideo);
     audio.setDefaultSetting(TrackAudio);
     application.setDefaultSetting(TrackApplication);
 
-    video.ice_ufrag = audio.ice_ufrag = application.ice_ufrag = ice_ufrag;
-    video.ice_pwd = audio.ice_pwd = application.ice_pwd = ice_pwd;
+    video.ice_ufrag = audio.ice_ufrag = application.ice_ufrag = std::move(ice_ufrag);
+    video.ice_pwd = audio.ice_pwd = application.ice_pwd = std::move(ice_pwd);
     video.direction = audio.direction = application.direction = direction;
     video.fingerprint = audio.fingerprint = application.fingerprint = fingerprint;
 }
@@ -1579,7 +1577,7 @@ static RtpDirection matchDirection(RtpDirection offer_direction, RtpDirection su
     }
 }
 
-void RtcConfigure::matchMedia(shared_ptr<RtcSession> &ret, TrackType type, const vector<RtcMedia> &medias, const RtcTrackConfigure &configure){
+void RtcConfigure::matchMedia(const shared_ptr<RtcSession> &ret, TrackType type, const vector<RtcMedia> &medias, const RtcTrackConfigure &configure){
     bool check_profile = true;
     bool check_codec = true;
 
diff --git a/webrtc/Sdp.h b/webrtc/Sdp.h
index 9e8f8f71..d75f58e0 100644
--- a/webrtc/Sdp.h
+++ b/webrtc/Sdp.h
@@ -710,10 +710,7 @@ public:
     RtcTrackConfigure audio;
     RtcTrackConfigure application;
 
-    void setDefaultSetting(string ice_ufrag,
-                           string ice_pwd,
-                           RtpDirection direction,
-                           const SdpAttrFingerprint &fingerprint);
+    void setDefaultSetting(string ice_ufrag, string ice_pwd, RtpDirection direction, const SdpAttrFingerprint &fingerprint);
     void addCandidate(const SdpAttrCandidate &candidate, TrackType type = TrackInvalid);
 
     shared_ptr<RtcSession> createAnswer(const RtcSession &offer);
@@ -724,7 +721,7 @@ public:
     void enableREMB(bool enable = true, TrackType type = TrackInvalid);
 
 private:
-    void matchMedia(shared_ptr<RtcSession> &ret, TrackType type, const vector<RtcMedia> &medias, const RtcTrackConfigure &configure);
+    void matchMedia(const shared_ptr<RtcSession> &ret, TrackType type, const vector<RtcMedia> &medias, const RtcTrackConfigure &configure);
     bool onCheckCodecProfile(const RtcCodecPlan &plan, CodecId codec);
     void onSelectPlan(RtcCodecPlan &plan, CodecId codec);