Re: [TLS] ALPN concerns

Peter Gutmann <p.gutmann@auckland.ac.nz> Wed, 06 November 2013 06:53 UTC

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From: Peter Gutmann <p.gutmann@auckland.ac.nz>
To: "<tls@ietf.org>" <tls@ietf.org>
Thread-Topic: [TLS] ALPN concerns
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Date: Wed, 6 Nov 2013 06:52:42 +0000
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Subject: Re: [TLS] ALPN concerns
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Brian Smith <brian@briansmith.org> writes:

>I am very concerned about the issues that they've run into where many web
>servers are failing to handshake when the ClientHello message is larger than
>255 bytes.

I'm curious as to how something like this could come about, is anyone familiar
with the code base for something that does this?  Is there actually code out
there that explicitly checks:

  if( sizeof( client_handshake ) > 255 )
    return( -1 );

and if so, why?

Peter.