# MQTT reconnection failure to Flespi.io

**URL:** <https://discourse.nodered.org/t/mqtt-reconnection-failure-to-flespi-io/55768>\
**Category:** General\
**Tags:** mqtt\
**Created:** [27 December 2021 20:33 UTC](https://discourse.nodered.org/t/mqtt-reconnection-failure-to-flespi-io/55768 "2021-12-27T20:33:55Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![Barbudor](https://avatars.discourse-cdn.com/v4/letter/b/4af34b/32.png) [@Barbudor](https://discourse.nodered.org/u/Barbudor)\
**Post date:** [30 December 2021 09:03 UTC](https://discourse.nodered.org/t/mqtt-reconnection-failure-to-flespi-io/55768/16 "2021-12-30T09:03:51Z")

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I finally had some feedback from Flespi who pointed that their broker has a limit of 16 topic per subscription request : [flespi MQTT broker - MQTT 5.0 compliant, secure, fast, and free](https://flespi.com/mqtt-broker)  
Indeed I have 18 topics in my subscription request.  
It doesn't explain why the request works when I restart Node-red but not on subsequent reconnections.

Unfortunately I don't see, as of today, any ways in the MQTT broker node to limit the number of topics per subscription request.

I will let the test with no Clean Session run for a couple more days and then split my access to Flespi across 2 different MQTT Broker nodes as a work around.  
At the same I will post a feature suggestion to add a limit to the number of topics per subscriptions requests (done at [Add option to limit number of topics per subscription requests](https://discourse.nodered.org/t/add-option-to-limit-number-of-topics-per-subscription-requests/55879))

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