[rabbitmq-discuss] Are there any unused delivery tag values?

[Lowell.Boggs at emc.com]

Great!  I really don't like making assumptions about data ranges without documentation.

I'll see if I can find the spec on the web for answers to similar questions in the future.

Thanks!

Lowell 

-----Original Message-----
From: David Wragg [mailto:david at rabbitmq.com] 
Sent: Tuesday, July 26, 2011 10:49 AM
To: Boggs Jr., Lowell
Cc: rabbitmq-discuss at lists.rabbitmq.com
Subject: Re: [rabbitmq-discuss] Are there any unused delivery tag values?

Hi Lowell,

<Lowell.Boggs at emc.com> writes:
> Delivery tags are uint64_t data.
>
> Is zero a valid delivery tag?  Is (uint64_t)(-1)?
>
> I'm interested in knowing whether I need to keep extra bools laying
> around to keep track of the "has been auto-acked" or not flag.