MQTTnet/Source/MQTTnet/TopicFilter.cs

using MQTTnet.Protocol;

namespace MQTTnet
{
    public class TopicFilter
    {
        public string Topic { get; set; }

        public MqttQualityOfServiceLevel QualityOfServiceLevel { get; set; }

        /// <summary>
        /// This is only supported when using MQTTv5.
        /// </summary>
        public bool? NoLocal { get; set; }

        /// <summary>
        /// This is only supported when using MQTTv5.
        /// </summary>
        public bool? RetainAsPublished { get; set; }

        /// <summary>
        /// This is only supported when using MQTTv5.
        /// </summary>
        public MqttRetainHandling? RetainHandling { get; set; }

        public override string ToString()
        {
            return string.Concat(
                "TopicFilter: [Topic=", 
                Topic,
                "] [QualityOfServiceLevel=", 
                QualityOfServiceLevel,
                "] [NoLocal=", 
                NoLocal, 
                "] [RetainAsPublished=", 
                RetainAsPublished, 
                "] [RetainHandling=", 
                RetainHandling, 
                "]");
        }
    }
}