Exception:"SslStream" object cannot be visited which has been released

`在 System.Net.Security.SslState.CheckThrow(Boolean authSucessCheck) 在 System.Net.Security.SslState.get_SecureStream() 在 System.Net.Security.SslStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback asyncCallback, Object asyncState) 在 System.IO.Stream.<>c.b__43_0(Stream stream, ReadWriteParameters args, AsyncCallback callback, Object state) 在 System.Threading.Tasks.TaskFactory`1.FromAsyncTrim[TInstance,TArgs](TInstance thisRef, TArgs args, Func`5 beginMethod, Func`3 endMethod) 在 System.IO.Stream.BeginEndReadAsync(Byte[] buffer, Int32 offset, Int32 count) 在 System.IO.Stream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken) 在 System.IO.Stream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count) 在 DotNetty.Handlers.Tls.TlsHandler.ReadFromSslStreamAsync(IByteBuffer outputBuffer, Int32 outputBufferLength) 在 DotNetty.Handlers.Tls.TlsHandler.Unwrap(IChannelHandlerContext ctx, IByteBuffer packet, Int32 offset, Int32 length, List`1 packetLengths, List`1 output) 在 DotNetty.Handlers.Tls.TlsHandler.Decode(IChannelHandlerContext context, IByteBuffer input, List`1 output) 在 DotNetty.Codecs.ByteToMessageDecoder.CallDecode(IChannelHandlerContext context, IByteBuffer input, List`1 output)`