WebSocket error

When running Rhino.Inside for a longer period of time (4-8 hours), I get such an exception:

<>c__DisplayClass9.<ReadBytesAsync>b__8|System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
                            at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)
                            at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
                            --- End of inner exception stack trace ---
                            at System.Net.Security._SslStream.EndRead(IAsyncResult asyncResult)
                            at WebSocketSharp.Ext.<>c__DisplayClass9.<ReadBytesAsync>b__8(IAsyncResult ar)

It seems the rhino core underneath keeps running.