Setting of Session Expiry Interval and Clean Start that equivalent of v3.1.1

[Takatoshi Kondo <redboltz@gmail.com>]

Hi,

I have a comment about the following part of MQTT Version 5.0 document:

https://docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html#_Toc3901048

> 3.1.2.11.2 Session Expiry Interval
>
> ...snip...
>
> Non-normative comment
>
> Setting Clean Start to 1 and a Session Expiry Interval of 0, is equivalent to setting CleanSession to 1 in the MQTT Specification Version 3.1.1. Setting Clean Start to 0 and no Session Expiry Interval, is equivalent to setting CleanSession to 0 in the MQTT Specification Version 3.1.1.

I thin that "Setting Clean Start to 0 and no Session Expiry Interval,
is equivalent to setting CleanSession to 0 in the MQTT Specification
Version 3.1.1." is not correct.

Because "no Session Expiry Interval" is equivalent to set to 0.

The spec said that as follows:

> If the Session Expiry Interval is absent the value 0 is used. If it is set to 0, or is absent, the Session ends when the Network Connection is closed.
>
> If the Session Expiry Interval is 0xFFFFFFFF (UINT_MAX), the Session does not expire.

So I think that the sentence

"Setting Clean Start to 0 and no Session Expiry Interval, is
equivalent to setting CleanSession to 0 in the MQTT Specification
Version 3.1.1."

should be something like as follows:

"Setting Clean Start to 0 and a Session Expiry Interval of
0xFFFFFFFF(UINT_MAX), is equivalent to setting CleanSession to 0 in
the MQTT Specification Version 3.1.1."

Am I missing something?

Thanks,
Takatoshi