# Microsoft.AspNetCore.SignalR

``` diff
 namespace Microsoft.AspNetCore.SignalR {
     public class HubException : Exception {
-        public HubException(SerializationInfo info, StreamingContext context);
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        public HubException(SerializationInfo info, StreamingContext context);
     }
     public class HubOptions {
+        public long StatefulReconnectBufferSize { get; set; }
     }
 }
```

