CSeq value "0" is valid number.
As in 20.16 it clearly says that 32 bit unsigned
integer is valid number.

Regards,
Ravi

--- Nataraju A B <[EMAIL PROTECTED]> wrote:

> Hi all, 
>  
> ABNF for CSeq header is 
> CSeq  =  "CSeq" HCOLON 1*DIGIT LWS Method
>  
> This does mean that '0' is a valid CSeq number. 
> I see some stacks rejecting the requests if CSeq
> number is ZERO. 
>  
> Can I know the expert opinion about the same. I
> mean, was that intended
> to be non-zero unsigned number or just unsigned
> number
>  
> Thanks & Regards,
> Nataraju A.B. Kodiak Networks  Ind Pvt Ltd
> "Change your thoughts, and you change your world."
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