SSL client reuse_sessions not working?

[Roger Lipscombe]

On Thu, 2 Apr 2020 at 10:07, Roger Lipscombe <roger@REDACTED> wrote:
> I'm investigating SSL session reuse, and I can't get my client to
> actually reuse sessions. I'm using the escript below.

I looked in the OTP source code; it only reuses client sessions if
verify is set to verify_peer.

Obviously, that causes problems in the "localhost" case, so I stubbed
that out with {verify_fun, {fun yolo/3, undefined}}.

At that point, it started reusing session IDs, but the
'session_resumption' value still came back negative. What's that
about? I was hoping to use that to assert that the session *had* been
reused.