On Wed, Nov 12, 2014, Tristan Hill wrote:

> Hi,
> 
> Is it possible to make s_client give more detail about the client
> hello it sends.  A break down covering the RFC structure would be
> useful.
> 
> struct {
>             ProtocolVersion client_version;
>             Random random;
>             SessionID session_id;
>             CipherSuite cipher_suites<2..2^16-1>;
>             CompressionMethod compression_methods<1..2^8-1>;
>         } ClientHello;
> 
> I'm trying to work out what is different between these two connections
> (and why one works but the other doesn't):
> 

It is but it's only supported in OpenSSL 1.0.2 and later. You compile OpenSSL
with "enable-ssl-trace" and use the -trace option to s_client/s_server.

Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org
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