Add support for DTLS/TLS over UDP

[Mzack9999]

Please describe your feature request:

Tools like openvpn expose TLS layer over UDP (DTLS). The manual dumping of certificates with openssl is described at https://serverfault.com/questions/708577/how-do-i-connect-to-an-openvpn-server-and-dump-the-certificate-chain-presented-w