Re: [mqtt-comment] Why Maximum Packet Size = 2,684,354,565?

[Ian Craggs <icraggs@modelbasedtesting.co.uk>]

Roger,

then the number listed in the spec is written incorrectly, with an extra 
5 at the end.  I was looking at this this morning.

Ian


On 14/08/2017 13:25, Roger Light wrote:
> Hi Tatsuzo,
>
> It's down to the way the "remaining length" value is constructed. It
> is 4 bytes with the most significant bit of each byte being a
> continuation bit. This gives us 7 bits of integer data per "byte", so
> a 28 bit integer in total. 2^28 = 268435456.
>
> Cheers,
>
> Roger
>
>
> On 14 August 2017 at 13:16, Tatsuzo Osawa <tatsuzo.osawa@gmail.com> wrote:
> > Hi there,
> >
> > Could you show the reason of magic number "2,684,354,565" of Maximum
> > Packet Size ?
> >
> > Regards,
> > Tatsuzo Osawa
> >
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--
Ian Craggs
icraggs@uk.ibm.com                 IBM United Kingdom
Paho Project Lead; Committer on Mosquitto