Re: [TLS] Multiple records in record limit (was: Secdir review)

Alan DeKok <aland@deployingradius.com> Mon, 26 February 2018 15:48 UTC

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Date: Mon, 26 Feb 2018 10:48:35 -0500
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Subject: Re: [TLS] Multiple records in record limit (was: Secdir review)
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On Feb 25, 2018, at 8:39 PM, Martin Thomson <martin.thomson@gmail.com> wrote:
> 
> Out of the secdir review (thanks again Alan!), I realized that the
> draft never actually said this:
> 
>   PMTU governs the size of UDP datagrams, which limits the size of records, but
>   does not prevent records from being smaller.  An endpoint that sends small
>   records is still able to send multiple records in a single UDP datagram.
> 
> I think that I should add that explanation.
> 
> Does anyone think that this should go further and advise against
> putting multiple records in the same datagram?

  Yes.  I don't think there's any good reason for that kind of behaviour.

  Alan DeKok.