Subject: RE: [Tsvwg] How to handle data received in COOKIE ECHOED state in SCTP

From: [email-masked]
Date: Fri, 17 May 2002 19:51:39 +0300

Hi Simon!

	See my comment below...

> -----Original Message-----
> From: ext [email-masked] [mailto:[email-masked]]
> Sent: 17. May 2002 18:40
> To: [email-masked]
> Subject: [Tsvwg] How to handle data received in COOKIE ECHOED state in
> SCTP
> 
> 
> Hi, All,
> 
> In RFC 2960, we have:
> 
> 3.3.12 Cookie Acknowledgement (COOKIE ACK) (11):
> 
>    This chunk is used only during the initialization of an 
> association.
>    It is used to acknowledge the receipt of a COOKIE ECHO chunk.  This
>    chunk MUST precede any DATA or SACK chunk sent within the
>    association, but MAY be bundled with one or more DATA 
> chunks or SACK
>    chunk in the same SCTP packet.
> 
> 6. User Data Transfer
> 
>    DATA chunks MUST only be received according to the rules below in
>    ESTABLISHED, SHUTDOWN-PENDING, SHUTDOWN-SENT.  A DATA 
> chunk received
>    in CLOSED is out of the blue and SHOULD be handled per 8.4.  A DATA
>    chunk received in any other state SHOULD be discarded.
> 
> My question is:
> if data is bundled with COOKIE ACK, it will be received in 
> COOKIE ECHED

	This is not right... The COOKIE ACK chunk is processed first, and since that very moment, we are in the ESTABLISHED state... Afterwards, we process the DATA (or any other) chunk...

	BR Iván Arias Rodríguez

> state. By the above statement, it SHOULD be discarded. Is it 
> the right way?
> Maybe, I miss something.
> 
> Simon Zhuang
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Signaling Products Design Center   Tel: (856)642-9229x245
> RadiSys Corporation                            www.radisys.com
> 520 Fellowship Road, C-304               www.ss7-link.com
> Mt. Laurel, NJ 08054
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> 
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