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Re: [paho-dev] Query topics of a broker

Hi Mathias,

there is no standard mechanism in MQTT to do that. Some MQTT brokers may allow this out of the box (I’m not aware of such a broker, though), some other brokers may give you the ability to implement this yourself with plugins. HiveMQ for instance lets you do exactly this with the plugin system (see http://www.hivemq.com/docs/plugins/2.2.0/#subscription-store-service).

Hope that helps,

Dominik

(as always: Take this with a grain of salt since I’m involved in the HiveMQ development)


On 7 Feb 2015 at 18:53:59, Matthias Böhmer (mail@xxxxxxxxxxxxxxxxxx) wrote:

Dear List --- I am currently looking into using MQTT in a large infrastructure for replacing old pub-sub system. Is anybody aware of a component keeping track of available topics that allows to query the topics? For instance something like "select topics where topic like '/level/#'" which gives me all matching topics? Cheers, Matthias

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