You can talk plain text protocol through a TLS or SSL-encrypted connection, even interactively.

Example:

        { echo GET / HTTP/1.0 ; echo ; sleep 1 ; } | openssl s_client -connect www.google.com:443

Or just :

        openssl s_client -connect www.google.com:443

then type interactively GET / HTTP/1.0 then press enter twice.