Re: [TLS] interop for TLS clients proposing TLSv1.1

Peter Gutmann <pgut001@cs.auckland.ac.nz> Thu, 22 September 2011 10:23 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: mrex@sap.com
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Date: Thu, 22 Sep 2011 22:25:44 +1200
Cc: tls@ietf.org
Subject: Re: [TLS] interop for TLS clients proposing TLSv1.1
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Martin Rex <mrex@sap.com>; writes:

>Likewise, if my analsis is correct and that Blog accurately describes
>WinINETs behaviour, that WinINET behaviour should be fixed to allow MSIE
>users on Win7 to enable TLSv1.1 with less risk of interop problems.

I've been told this is an artefact of schannel/wininet layering, that there's
no way for schannel to communicate the necessary info to wininet, so it
responds with a RST.  There are other situations where it does this as well,
not just protocol-version issues.  There's apparently no easy way to fix this
without considerable re-architecting.

Peter.