diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index a6b548fd..c8cd55ac 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1186,4 +1186,19 @@ void RtcConfigure::addCandidate(const SdpAttrCandidate &candidate, TrackType typ
             break;
         }
     }
+}
+
+shared_ptr<RtcSession> RtcConfigure::createOffer(){
+    shared_ptr<RtcSession> ret = std::make_shared<RtcSession>();
+    ret->version = 0;
+    ret->origin.parse("- 0 0 IN IP4 0.0.0.0");
+    ret->session_name = "zlmediakit_webrtc_session";
+    ret->session_info = "zlmediakit_webrtc_session";
+    ret->connection.parse("IN IP4 0.0.0.0");
+    ret->msid_semantic.parse("WMS *");
+    return nullptr;
+}
+
+shared_ptr<RtcSession> RtcConfigure::createAnswer(const RtcSession &offer){
+    return nullptr;
 }
\ No newline at end of file
diff --git a/webrtc/Sdp.h b/webrtc/Sdp.h
index bfdf01d4..d6860930 100644
--- a/webrtc/Sdp.h
+++ b/webrtc/Sdp.h
@@ -669,6 +669,9 @@ public:
                            RtpDirection direction,
                            const SdpAttrFingerprint &fingerprint);
     void addCandidate(const SdpAttrCandidate &candidate, TrackType type = TrackInvalid);
+
+    shared_ptr<RtcSession> createOffer();
+    shared_ptr<RtcSession> createAnswer(const RtcSession &offer);
 };