@deftypefun {int} {gnutls_dh_get_peers_public_bits} (gnutls_session_t @var{session})
@var{session}: is a gnutls session

Get the Diffie-Hellman public key bit size.  Can be used for both
anonymous and ephemeral Diffie-Hellman.

@strong{Returns:} The public key bit size used in the last Diffie-Hellman
key exchange with the peer, or a negative error code in case of error.
@end deftypefun