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Re: Does Mosquitto send CONNACKS with response other than 0?

To: Michael Connors <connorsml@xxxxxxxxx>
From: Roger Light <roger@xxxxxxxxxx>
Date: Mon, 15 Aug 2011 15:34:14 +0100
Cc: mqtt-users@xxxxxxxxxxxxxxxxxxx
In-reply-to: <CAFvVXiRPRL=NktOasrzAXbqTMUWP_iVorKFtOLazJvn3W9cMAw@mail.gmail.com>
Sender: rogerlight@xxxxxxxxx

Hi Michael,

> I have been having a look at the Erlang MQTT client, and I modified it to
> send usernames and password (successfully I think).

That's great news! The Erlang client has been sat unloved for a while.

> Then I tried to do a connect with no username and password and I got disconnected,
> however I was expecting to receive a CONNACK with a response code of either 4 or 5?

This is a mosquitto error. It does queue a CONNACK message but then
closes the socket immediately so the message doesn't get sent. I've
always regarded this as fairly non-critical but feel free to disagree!

Cheers,

Roger

References

Does Mosquitto send CONNACKS with response other than 0?
From: Michael Connors, 2011-08-15