# System.Net.Quic

``` diff
 namespace System.Net.Quic {
     public enum QuicError {
-        AddressInUse = 4,

+        CallbackError = 15,
-        HostUnreachable = 7,

-        InvalidAddress = 5,

-        ProtocolError = 11,

+        TransportError = 14,
     }
     public sealed class QuicException : IOException {
+        public long? TransportErrorCode { get; }
     }
 }
```

