View source for Simple TLS Server

== Session Reuse ==

According to Viktor Dukhovni at [http://mta.openssl.org/pipermail/openssl-users/2016-September/004564.html Possible to control session reuse from the client]:

<pre>> For performance testing purposes, I would like to turn off session
> reuse in the (homegrown) client I use for testing. Is there a function
> in the openssl library to do it?
> 
> I tried googling for "openssl client don't send session id" but I didn't
> find anything useful.

Just do nothing.  Client sessions are not reused unless you explicitly
arrange for reuse of a session by calling SSL_set_session() before
SSL_connect().  If you're trying to avoid wasting memory on storing
client-side sessions that you'll never reuse then this may help:

   SSL_CTX_set_session_cache_mode(client_ctx, SSL_SESS_CACHE_OFF);

but note this is also the default state, so is also not needed unless
some other code has explicitly enabled client-side caching of sessions.

Only the server-side cache is enabled by default.</pre>