Mqqt Error: Mqtt Password Truncated about homebuttons HOT 6 CLOSED

I decided to poke through the code, sure enough, password is 50 characters

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mosquitto max password length is 65535 bytes.
UTF-8 characterset can use up to 4 bytes per character... int(65535/4)=16383

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@BriscoeTech I'll raise this limit. In the meantime you could add a new user for MQTT with a shorter password.

@Zixim I can't store this much data 🙂. 50 is already very long for a password... What would be a reasonable limit? 128 characters?

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@nplan i feel 50 is sufficient... 😛 but I also understand OP's pain of having to redo all the passwords.
64 or 128 are pretty numbers i guess.

@BriscoeTech
OTOH... Home Assistant MQTT (mosquitto) allows for multiple user/password pairs and it's really straightforward. Could also add a user/pass for the Homebuttons.
https://community.home-assistant.io/t/mqtt-with-multiple-users/432162

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Increased to 64 character in v2.2.1.

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Thanks everyone! I will take a look at setting up the multiple password pairs.

I agree 64 is probably plenty big enough, I was amazed Mosquito generated that large a password to begin with, and did not think about the implications at the time. Hopefully this will help prevent another user from getting the same surprise.

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