Opc.Ua.Server.StandardServer.ValidateRequest C# (CSharp) Method

        protected override void ValidateRequest(RequestHeader requestHeader)
        {
            // check for server error.
            ServiceResult error = ServerError;

            if (ServiceResult.IsBad(error))
            {
                throw new ServiceResultException(error);
            }
            
            // check server state.
            ServerInternalData serverInternal = m_serverInternal;

            if (serverInternal == null || !serverInternal.IsRunning)
            {
                throw new ServiceResultException(StatusCodes.BadServerHalted);
            }

            base.ValidateRequest(requestHeader);
        }