fix : crash when sdpMLineIndex is null on addCandidate (flutter-webrtc#1153)

duyhungtnn · web-flow · commit 81fec361744f · 2022-11-03T23:49:37.000+08:00
diff --git a/common/darwin/Classes/FlutterWebRTCPlugin.m b/common/darwin/Classes/FlutterWebRTCPlugin.m
@@ -344,7 +344,11 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult) result
         NSString* peerConnectionId = argsMap[@"peerConnectionId"];
         NSDictionary* candMap = argsMap[@"candidate"];
         NSString *sdp = candMap[@"candidate"];
-        int sdpMLineIndex = ((NSNumber*)candMap[@"sdpMLineIndex"]).intValue;
+        id sdpMLineIndexValue = candMap[@"sdpMLineIndex"];
+        int sdpMLineIndex = 0;
+        if (![sdpMLineIndexValue isKindOfClass:[NSNull class]]) {
+            sdpMLineIndex = ((NSNumber*)candMap[@"sdpMLineIndex"]).intValue;
+        }
         NSString *sdpMid = candMap[@"sdpMid"];
 
         RTCIceCandidate* candidate = [[RTCIceCandidate alloc] initWithSdp:sdp sdpMLineIndex:sdpMLineIndex sdpMid:sdpMid];
