DisconnectReason public enum DisconnectReason Documentation AuthenticationCanceledByUser = 13 ByApplication = 11 CompressionError = 6 ConnectionLost = 10 HostKeyNotVerifiable = 9 HostNotAllowedToConnect = 1 IllegalUserName = 15 KeyExchangeFailed = 3 MacError = 5 NoMoreAuthenticationMethodsAvailable = 14 None = 0 ProtocolError = 2 ProtocolVersionNotSupported = 8 Reserved = 4 ServiceNotAvailable = 7 TooManyConnections = 12