/// <summary>
/// 发送消息
/// </summary>
/// <param name="msg">发送消息</param>
public void SendMessage(string msg, MqttQoS qos = MqttQoS.AtLeastOnce)
{
var mqttMsg = new MqttMessage
{
Retain = false,
Dup = false,
Payload = Encoding.UTF8.GetBytes(msg),
QoS = qos
};
mqttClient.SendMessageAsync(this.topic, mqttMsg);
}
/// <summary>
/// 订阅
/// </summary>
/// <param name="topic">主题</param>
/// <param name="qos">质量</param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="MqttException"></exception>
/// <returns></returns>
private ITaskSetter <bool> SubscribeInternal(string topic, MqttQoS qos)
{
if (string.IsNullOrEmpty(topic))
{
throw new ArgumentNullException("topic");
}
var taskId = this.GenerateTaskId();
var setter = this.taskSetterTable.Create <bool>(taskId);
var opt = this.InitResponseOptions(taskId);
var er = MQTTAsync.MQTTAsync_subscribe(this.handle, topic, qos, ref opt);
this.EnsureSuccessCode(er);
return(setter);
}
public MqttMsgPublishReceivedEventArgs(byte[] Message, byte QosLevel, string Topic)
{
this.Message = new string(Encoding.UTF8.GetChars(Message));
this.QosLevel = (MqttQoS)QosLevel;
this.Topic = Topic;
}
public virtual int SubscribeToEvents(MqttQoS qualityOfService, string[] subTopics)
{
if (mqttClient != null)
{
int returnCode = mqttClient.Subscribe(subTopics, new byte[] { (byte)qualityOfService });
return returnCode;
}
return -1;
}
public static extern MqttError MQTTAsync_subscribe(
IntPtr handle,
[MarshalAs(UnmanagedType.LPStr)] string topic,
MqttQoS qos,
ref MQTTAsync_responseOptions responseOption);
public override int SubscribeToEvents(MqttQoS qualityOfService, string[] subTopics)
{
int returnCode = base.SubscribeToEvents(qualityOfService, subTopics);
NDLogger.Log("Subscribed to " + subTopics, LogLevel.Verbose);
return returnCode;
}
/// <summary>
/// 订阅
/// </summary>
/// <param name="topic">主题</param>
/// <param name="qos">质量</param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="MqttException"></exception>
/// <returns></returns>
public Task <bool> SubscribeAsync(string topic, MqttQoS qos)
{
return(this.SubscribeInternal(topic, qos).GetTask());
}
/// <summary>
/// 订阅
/// </summary>
/// <param name="topic">主题</param>
/// <param name="qos">质量</param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="MqttException"></exception>
/// <returns></returns>
public bool Subscribe(string topic, MqttQoS qos)
{
return(this.SubscribeInternal(topic, qos).GetResult());
}
/// <summary>
/// mqtt消息
/// </summary>
/// <param name="qos">qos</param>
/// <param name="payload">数据</param>
public MqttMessage(MqttQoS qos, byte[] payload)
{
this.QoS = qos;
this.Payload = payload;
}
/// <summary>
/// mqtt消息
/// </summary>
/// <param name="qos">qos</param>
/// <param name="payload">数据</param>
public MqttMessage(MqttQoS qos, string payload)
{
this.QoS = qos;
this.Payload = Encoding.UTF8.GetBytes(payload);
}
