Re: [dcp] sequence numbers on resend

[Eddie Kohler <kohler@icir.org>]

> 4.2 defines that a sequence number increases by one (modulo 2^24) for
>   every packet sent.
> 
> The spec isn't clear to me whether retransmissions (e.g. request and
> response) should follow this guideline.

You're right. We need to be clearer about retransmissions at the start of a
connection.

My first instincts are:

(1) DCCP-Responses are never retransmitted. If a Response is lost, the side
that initiated the connection will retransmit the Request eventually.

(2) I'm not sure it matters, in practice, whether retransmitted Requests
have new sequence numbers. Therefore, for consistency, I would choose that
they would.

Eddie

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