Re: [TLS] I-D Action: draft-ietf-tls-certificate-compression-05.txt

Patrick McManus <mcmanus@ducksong.com> Fri, 05 April 2019 11:44 UTC

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References: <155445860706.13142.18114741162189514330@ietfa.amsl.com> <740c8243-395d-61ee-ad64-58557ec99526@wizmail.org> <187E4B97-9285-4399-A74A-110886486AD6@ericsson.com>
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From: Patrick McManus <mcmanus@ducksong.com>
Date: Fri, 5 Apr 2019 13:44:37 +0200
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To: John Mattsson <john.mattsson@ericsson.com>
Cc: Jeremy Harris <jgh@wizmail.org>, "tls@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] I-D Action: draft-ietf-tls-certificate-compression-05.txt
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also congestion control interaction will typically cause more bytes to
incur extra round trips - especially early in the connection.

On Fri, Apr 5, 2019 at 1:04 PM John Mattsson <john.mattsson@ericsson.com>
wrote:

> If fragmentation is used on some layer, lowering the number of bytes can
> definitely reduce the number of round-trips. This should probably be
> explained a bit more.
>
> If used in any of the TLS based EAP methods, the use of compression may
> even be needed to make the handshake complete at all as many access points
> drop EAP connections after 40-50 packets.
> https://tools.ietf.org/html/draft-ms-emu-eaptlscert-02
>
> John
>
> -----Original Message-----
> From: TLS <tls-bounces@ietf.org> on behalf of Jeremy Harris <
> jgh@wizmail.org>
> Date: Friday, 5 April 2019 at 12:35
> To: "TLS@ietf.org" <tls@ietf.org>
> Subject: Re: [TLS] I-D Action:
> draft-ietf-tls-certificate-compression-05.txt
>
>     On 05/04/2019 11:03, internet-drafts@ietf.org wrote:
>     >    In TLS handshakes, certificate chains often take up the majority
> of
>     >    the bytes transmitted.
>     >
>     >    This document describes how certificate chains can be compressed
> to
>     >    reduce the amount of data transmitted and avoid some round trips.
>
>     Reducing the number of bytes (and possibly packets) is a good thing,
>     but how does this reduce roundtrips?
>     --
>     Thanks,
>       Jeremy
>
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