From ###@###.###:

Yes I'm talking about the PSK ciphersuite defined in RFC 4279
[company] will develop a client which communicates with an applicative server by http requests ; these requests will be secured by PSK-TLS.
In an other side , we will test this applicative server with a WebLoad tool which simulates http client. But actually , these tools (LoadRunner, WebLoad....) don't support PSK because Java doesn't support PSK.
So it will be very interesting for us to know if PSK is planned in your development
See also RFC's 4279, 4785 (null encryption), 5489 (ECDHE_PSK).