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dotnet / MQTTnet

MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.
MIT License
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how to unsubscibe all topics #2063

Open lujiashun1 opened 3 months ago

lujiashun1 commented 3 months ago

MqttTest.zip github `var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()

            .Build();
        //MqttClientUnsubscribeOptions mqttClientUnsubscribeOptions = new MqttClientUnsubscribeOptions();
        //mqttClientUnsubscribeOptions.TopicFilters = mqttClient.Options.
        //await mqttClient.UnsubscribeAsync(mqttClientUnsubscribeOptions);
        mqttSubscribeOptions.TopicFilters = mqttTopicFilters;

        var response = await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);`

when I click Subscribe several times，I received several identical messages at the same time, Can't it remove duplicate topics,or how to unsbuscribe all topics?

SeppPenner commented 3 months ago

You can subsribe to the same topic multiple times if you want, but you shouldn't. And you can unsubscribe using UnsubscribeAsync, so what's the point?