/// <summary>
/// 断开连接
/// </summary>
public void DisConnect()
{
try
{
#region 先取消订阅
List <string> topics = new List <string>();
if (Client.Subscriptions.Count > 0)
{
foreach (Subscription subscription in Client.Subscriptions)
{
topics.Add(subscription.TopicName);
}
string errMsg = string.Empty;
UnSubscribe(topics, ref errMsg);
}
#endregion
Client.MessageReceived -= OnMessageReceived;
Client.ReconnectedMqtt -= OnReconnectedMqtt;
Client.Disconnect();
Client.Dispose();
LogHelper.WriteDebug("MQTT连接断开");
}
catch (Exception e)
{
LogHelper.WriteError("MQTT连接断开失败" + e.Message);
}
}
/// <summary>
/// 方法说明：MQTT断开连接
/// 完成时间：2016-04-20
/// </summary>
public void DisConnect()
{
try
{
if (_client == null)
{
return;
}
//先取消主题的订阅
var topics = new List <string>();
if (_client.Subscriptions.Count > 0)
{
topics.AddRange(_client.Subscriptions.Select(subscription => subscription.TopicName));
var errMsg = string.Empty;
UnSubscribe(topics, ref errMsg);
}
//再取消事件订阅
_client.MessageReceived -= OnMessageReceived;
_client.ReconnectedMqtt -= OnReconnectedMqtt;
//最后断开断开连接
_client.Disconnect();
//断开连接后，心跳计数需要释放
_heartbeattimer.Close();
_heartbeatnumber = 0;
_client.Dispose();
LogHelper.WriteDebug(Resources.SdkMqttDisconnectSuccess);
}
catch (Exception ex)
{
LogHelper.WriteError($"{Resources.SdkMqttDisconnectFail}:{ex.Message}");
}
}