Fallback to unmunged SDP for answer (#400)

* Fallback to unmunged sdp for answer * changeset * fix log message
livekit · Aug 18, 2022 · d6dd20c · d6dd20c
1 parent 027ede3
commit d6dd20c
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diff --git a/.changeset/fifty-moles-train.md b/.changeset/fifty-moles-train.md
@@ -0,0 +1,5 @@
+---
+'livekit-client': patch
+---
+
+Fallback to unmunged sdp for answer
diff --git a/src/room/PCTransport.ts b/src/room/PCTransport.ts
@@ -157,8 +157,17 @@ export default class PCTransport {
         ensureAudioNack(media);
       }
     });
-    answer.sdp = write(sdpParsed);
-    await this.pc.setLocalDescription(answer);
+    const originalSdp = answer.sdp;
+    try {
+      answer.sdp = write(sdpParsed);
+      await this.pc.setLocalDescription(answer);
+    } catch (e: unknown) {
+      log.warn('not able to set desired local description, falling back to unmodified answer', {
+        error: e,
+      });
+      answer.sdp = originalSdp;
+      await this.pc.setLocalDescription(answer);
+    }
     return answer;
   }