/// <summary>
/// 发送消息
/// 不跟踪服务端的消息处理结果
/// </summary>
/// <param name="topic">主题</param>
/// <param name="message">消息</param>
/// <exception cref="ArgumentNullException"></exception>
/// <returns></returns>
public MqttError SendMessageAsync(string topic, MqttMessage message)
{
if (string.IsNullOrEmpty(topic))
{
throw new ArgumentNullException("topic");
}
if (message == null)
{
throw new ArgumentNullException("message");
}
var msg = message.ToStruct();
var opt = new MQTTAsync_responseOptions();
opt.Init();
var er = MQTTAsync.MQTTAsync_sendMessage(this.handle, topic, ref msg, ref opt);
msg.Dispose();
return(er);
}
public static extern MqttError MQTTAsync_sendMessage(
IntPtr handle,
[MarshalAs(UnmanagedType.LPStr)] string destinationName,
ref MQTTAsync_message msg,
ref MQTTAsync_responseOptions response);
unsafe public static extern MqttError MQTTAsync_unsubscribeMany(
IntPtr handle,
int count,
IntPtr *topic,
ref MQTTAsync_responseOptions response);
public static extern MqttError MQTTAsync_unsubscribe(
IntPtr handle,
[MarshalAs(UnmanagedType.LPStr)] string topic,
ref MQTTAsync_responseOptions response);