MQTT, Home Assistant, Mosquitto: Connection Refused

Application Development MQTT
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1

Dear All!

I promise, I did my Google research before posting this:
I use home assistant with the MQTT add on.
I try to configure my MQTT Broker to bridge to the TTN MQTT broker.

Here is an error-message I receive:

Connection Refused: unacceptable protocol version

Anyone had this issue and has a solution for me?

Thanks a lot!
Albert

My config for MQTT Broker:

# Bridge to The Things Network
connection bridge
address eu1.cloud.thethings.network:1883
bridge_protocol_version mqttv311
remote_username xxx
remote_password xxx
# topic # both 0 ttn/ APPID/devices/
bridge_insecure false
topic # out 0
topic # in 0
cleansession true

The log message:


1647188389: Connecting bridge bridge (eu1.cloud.thethings.network:1883)
1647188389: mosquitto version 1.6.12 running
1647188389: Connection Refused: unacceptable protocol version
1647188389: Socket error on client local.core-mosquitto.bridge, disconnecting.
2

Can you try a vanilla client - like MQTT Explorer - that will verify all the credentials, details etc and let us know how you get on.

If they work OK, we can look at the details of your Home Assistant - but to cut to the chase on that bit, is it up to date and what MQTT version does it support?

3

Hello!
Thank you for getting back to me on that issue.
I have already tried with MQTT Explorer with the same credentials and it works.

In Home Assistant I use the most recent versions.

MQTT add-on 6.0.1
Home-Assistant 2022.3.4

I appreciate that you try to help me with this.

Thanks

Albert

4

Even if the message indicates that the bridge is not possible I do receive MQTT messages…

… to be continued :slight_smile:

5

This post was moved from another topic because double-posted.

Don’t double-post!

bluejedi

Dear All!

Here is my mqtt.yaml - and the config I have in my mqtt.conf…
However the bridge to the MQTT Add-On is not working. I opened another thread as well for that.

addon config (yaml)

logins:
  - username: xxxxx
    password: xxxxx
  - username: xdddd
    password: sdfsdfdsf
customize:
  active: true
  folder: mosquitto
certfile: fullchain.pem
keyfile: privkey.pem
require_certificate: false
anonymous: false

on HA /share/mosquitto I stored a file Mosquitto.conf

# Bridge to The Things Network
connection bridge
address eu1.cloud.thethings.network:1883
remote_username user@ttn
remote_password NNSXSxxx
bridge_insecure false
topic # out 0
topic # in 0
cleansession true

Here is the error-message I receive in the MQTT Log

1647371076: Connection Refused: unacceptable protocol version

Any feedback appreciated

1 Like
6

@Adandl

The error message in your log:

1647188389: Connection Refused: unacceptable protocol version

Does not match the configuration you show in the top post:

bridge_protocol_version mqttv311

In your double post (post right above) the bridge_protocol_version is missing which can explain the error message but it does not match the configuration that you show on top.

You should now (with protocol version specified) probably see a different error message which is not shown in your posts. FYI: Filename should be mosquitto.conf (all lower case).

A possible solution for your problem was already described here:


Use the Forum Search option to find information on the forum.

7

I struggled with the same “unacceptable version” error, adding the bridge_protocol_version got rid of that error for me, thx,

However, i still get connection errors. A test with mosquitto_sub in Home Assistant Terminal worked fine, from my perspective the issue seems to be with the Mosquitto Addon itself.

8

Hello - this is my current (working) configuration:

MQTT - Config in HA (snipplet)

customize:
  active: true
  folder: mosquitto

mosquitto/mqtt.conf

# Bridge to The Things Network
connection bridge
address eu1.cloud.thethings.network:1883
remote_username ********@ttn
remote_password *******
bridge_insecure false
topic # out 0
topic # in 0
cleansession true
#autosave_interval 30
#autosave_on_changes false

I still get this message in the logs, but apparently has nothing to do with TTN-MQTT, because I receive all messages.
A hint - use MQTT Explorer to debug the messages

Kind regards
Albert

1 Like