
//
// Licensed to Green Energy Corp (www.greenenergycorp.com) under one or
// more contributor license agreements. See the NOTICE file distributed
// with this work for additional information regarding copyright ownership.
// Green Energy Corp licenses this file to you under the Apache License,
// Version 2.0 (the "License"); you may not use this file except in
// compliance with the License.  You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This file was forked on 01/01/2013 by Automatak, LLC and modifications
// have been made to this file. Automatak, LLC licenses these modifications to
// you under the terms of the License.
//

namespace Automatak.DNP3.Interface
{
    /// <summary>
    /// Various callbacks that can be received from the link layer
    /// </summary>
    public interface ILinkStatusListener
    {
        /// Called when a the reset/unreset status of the link layer changes
        void OnStateChange(LinkStatus value);

        /// Called when a keep alive message is transmitted
        void OnKeepAliveInitiated();

        /// Called when a keep alive message (request link status) receives no response
        void OnKeepAliveFailure();

        /// Called when a keep alive message receives a valid response
        void OnKeepAliveSuccess();
    }
}
