Re: DDP segment sequences for Untagged DDP message

Caitlin Bestler <[email protected]>
Newsgroups gmane.ietf.rddp
Message-ID <[email protected]>
On Jan 16, 2004, at 1:08 PM, Barry Reinhold wrote:

>
> So, is there agreement, for the sequences that follow, that the
> specified "result" given below is the correct (and desired?) behavior 
> as
> defined by the 01 draft.
>
> Untagged DDP Segment Sequences:
>
> 1. QN = 0, MSN = 1, MO = 100 L = 1 Payload = 100 bytes
> 2. QN = 0, MSN = 1, MO = 0   L = 0 Payload = 100 bytes
> Result: DDP Message (bytes 0-200) is delivered to ULP
>

Did you mean to set the 'L' bit on message 1?

If so, that is a sender violation, which as explained in Paul's
response may or may not be caught by the receiver.

If Msg 1 is completed *before* Msg 2 is placed, Msg 2 will
be rejected as having an invalid MSN (it would be taken as
being 2**32-1 ahead of the current location).

In either case a 200 byte receive will be reported to the ULP.
The question is whether the Stream is almost immediately
thereafter torn down.

-- 
Caitlin Bestler - [email protected] - http://asomi.com/
http://asomi.com/CaitlinBestlerPublicPgpKey.html
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