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IIOT MQTT Subscription

Forum: Runtime 🇬🇧

Creator: koppit

Created: 2022-04-17

Updated: 2024-02-20

koppit - 2022-04-17

Hi,

I'm doing some home automation with Zigbee2MQTT and the MQTT_Client (1.2.0.0) from IIoT Libraries SL.
I have only been able to subscribe to 12 out of maybe 50 devices. Those are the 12 first in the program.
If i comment out one of the 12, the 13th is subscribed to.

Is there a limit to how many subscriptions the MQTT client can handle?
Is there a way to add more?

Greetings
Jan Magne!

SubscribedToFirst12Devices.png

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i-campbell - 2022-04-17

Hi Jan. If you open the library in library manager, you can edit the limits in MQTT.Params.
Ian

👍
2

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- koppit - 2022-04-17
  
  Thanks, increasing "g_udiMaxPublishersAndSubscribers" solved my issue.
  
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- auto1254 - 2024-02-20
  
  hi, I had the same error, but after doing this I was unable to connect more than 50 subscriptions to the same client, is there any way to help?
  
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  - i-campbell - 2024-02-20
    
    I think it is a similar issue, but different.
    
    I saw you use AWS IoT Core. AWS limits you in this - search in page here for text "Subscriptions per connection" it is 50, cannot be changed.
    
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