OpenSSL::SSL::SSLServer doesn't negotiate ECDHE-* ciphersuites
I'm trying to configure an instance of OpenSSL::SSL::SSLServer that supports Elliptic curve Diffie–Hellman. No matter what combination of Ruby and OpenSSL versions I try the negotiation with the client fails.
Proof of concept:
openssl s_client -connect localhost:8443
Also attaching a pcap file of the failed handshake.