anchor.diff:                             ?SEV_AWAIT_CONTINUE(Tester, tester, close),
                              ok
                      end},
  -         #{desc => "close the connection socket",
  +         #{desc => "close connection socket",
              cmd  => fun(#{csock := Sock} = State) ->
  -                           %% ok = socket:setopt(Sock, otp, debug, true),
                              case socket:close(Sock) of
                                  ok ->
                                      {ok, maps:remove(csock, State)};
  
positive.code: api_to_accept_tcp6(doc) ->
      [];
  api_to_accept_tcp6(_Config) when is_list(_Config) ->
      tc_try(api_to_accept_tcp4,
             fun() -> has_support_ipv6() end,
             fun() ->
                     ?TT(?SECS(10)),
                     InitState = #{domain => inet6, timeout => 5000},
                     ok = api_to_accept_tcp(InitState)
             end).
  
negative.code: sc_cpe_socket_cleanup_tcpL(doc) ->
      [];
  sc_cpe_socket_cleanup_tcpL(_Config) when is_list(_Config) ->
      ?TT(?SECS(5)),
      tc_try(sc_cpe_socket_cleanup_tcpL,
             fun() -> has_support_unix_domain_socket() end,
             fun() ->
                     InitState = #{domain   => local,
                                   type     => stream,
                                   protocol => default},
  