/// <summary>
/// Publish a message asynchronously
/// </summary>
/// <param name="topic">Message topic</param>
/// <param name="message">Message data (payload)</param>
/// <param name="qosLevel">QoS Level</param>
/// <param name="retain">Retain flag</param>
/// <returns>Message Id related to PUBLISH message</returns>
public static ushort Publish(MqttClientConnection clientConnection, string topic, byte[] message, byte qosLevel, bool retain)
{
MqttMsgPublish publish = new MqttMsgPublish(topic, message, false, qosLevel, retain);
publish.MessageId = clientConnection.GetMessageId();
// enqueue message to publish into the inflight queue
EnqueueInflight(clientConnection, publish, MqttMsgFlow.ToPublish);
return(publish.MessageId);
}
