docs: def INIT_TLS_SESSION(self):
          """
          XXX We should offer the right key according to the client's suites. For
          now server_rsa_key is only used for RSAkx, but we should try to replace
          every server_key with both server_rsa_key and server_ecdsa_key.
          """
          self.cur_session = tlsSession(connection_end="server")
          self.cur_session.server_certs = [self.mycert]
          self.cur_session.server_key = self.mykey
          if isinstance(self.mykey, PrivKeyRSA):
              self.cur_session.server_rsa_key = self.mykey
          # elif isinstance(self.mykey, PrivKeyECDSA):
          #    self.cur_session.server_ecdsa_key = self.mykey
          raise self.WAITING_CLIENTFLIGHT1()