[issue21015] support SSL_CTX_set_ecdh_auto on newer OpenSSLs

[Donald Stufft]

Donald Stufft added the comment:

The reason I made a default argument to set_ecdh_curve is that I couldn't find any information about what happens if you set a ecdh curve _twice_ within a a OpenSSL SSL Context. So I played it safe and made it a default argument that only gets called if you haven't called it. That preserves the users ability to specify their own curve for sure.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21015>
_______________________________________