anchor.diff:       tls13_finished_verify_data,
        tls13_1_RTT_handshake,
        tls13_basic_ssl_server_openssl_client,
  +     tls13_basic_ssl_server_ssl_client,
        tls13_custom_groups_ssl_server_openssl_client,
  +     tls13_custom_groups_ssl_server_ssl_client,
        tls13_hello_retry_request_ssl_server_openssl_client,
        tls13_client_auth_empty_cert_alert_ssl_server_openssl_client,
        tls13_client_auth_empty_cert_ssl_server_openssl_client,
  
positive.code:     ssl_test_lib:close(Server),
      ssl_test_lib:close_port(Client).
  
  tls13_custom_groups_ssl_server_openssl_client() ->
      [{doc,"Test that ssl server can select a common group for key-exchange"}].
  
  
negative.code:     ssl_test_lib:check_result(Server, ok),
      ssl_test_lib:close(Server),
      ssl_test_lib:close_port(Client).
  
  
  tls13_custom_groups_ssl_server_ssl_client() ->
      [{doc,"Test that ssl server can select a common group for key-exchange"}].
  
  tls13_custom_groups_ssl_server_ssl_client(Config) ->
      ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
      ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
  
      %% Set versions
      ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
                    {supported_groups, [x448, secp256r1, secp384r1]}|ServerOpts0],
      ClientOpts1 = [{versions, ['tlsv1.2','tlsv1.3']}|ClientOpts0],
      {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
  
      Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
  					{from, self()},
  					{mfa, {ssl_test_lib, send_recv_result_active, []}},
  					{options, ServerOpts}]),
      Port = ssl_test_lib:inet_port(Server),
  
      ClientOpts = [{supported_groups,[secp384r1, secp256r1, x25519]}|ClientOpts1],
  
      Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
  					{host, Hostname},
  					{from, self()},
  					{mfa, {ssl_test_lib, send_recv_result_active, []}},
  					{options, ClientOpts}]),
  
      ssl_test_lib:check_result(Server, ok, Client, ok),
      ssl_test_lib:close(Server),
      ssl_test_lib:close_port(Client).
  
  
  tls13_hello_retry_request_ssl_server_openssl_client() ->
      [{doc,"Test that ssl server can request a new group when the client's first key share"
  