anchor.diff:      Config.
   
   
  -init_per_testcase(_Case, Config) ->
  +init_per_testcase(api_connectx_init=Case, Config) ->
  +    check_sctp_connectx(Case, Config);
  +init_per_testcase(t_simple_local_sockaddr_in_connectx_init=Case, Config) ->
  +    check_sctp_connectx(Case, Config);
  +init_per_testcase(Case, Config) ->
  +    init_per_testcase_common(Case, Config).
  +    
  +init_per_testcase_common(_Case, Config) ->
   
       ?P("init_per_testcase -> entry with"
          "~n   Config:   ~p"
  
positive.code:     SockAddr = #{family   => inet,
                   addr     => Localhost,
                   port     => Pb},
      {ok, A1} = gen_sctp:connectx_init(Sa, [SockAddr], []),
      {Localhost,Pb,#sctp_assoc_change{state=cant_assoc, assoc_id = A1}} =
  	recv_event(log_ok(gen_sctp:recv(Sa, infinity))),
      ok = gen_sctp:listen(Sb, true),
      {ok, A2} = gen_sctp:connectx_init(Sa, [SockAddr], []),
      {Localhost,Pb,#sctp_assoc_change{state=comm_up, assoc_id = A2}} =
  	recv_event(log_ok(gen_sctp:recv(Sa, infinity))),
      ok = gen_sctp:close(Sa),
      ok = gen_sctp:close(Sb),
      ok.
  
  
  
negative.code: 
      {ok,S} = gen_sctp:open(),
      {ok,Pb} = inet:port(S),
      try ?no_return(gen_sctp:connectx_init(S, Localhost, 12345, []))
      catch error:badarg -> ok
      end,
      {error, einval} = gen_sctp:connectx_init(S, [Localhost], not_allowed_for_port, []),
      %% try ?no_return(gen_sctp:connectx_init(S, [Localhost], not_allowed_for_port, []))
      %% catch error:badarg -> ok
      %% end,
      try ?no_return(gen_sctp:connectx_init(S, [Localhost], 12345, not_allowed_for_opts))
      catch error:badarg -> ok
      end,
      ok = gen_sctp:close(S),
  