anchor.diff:  basic() ->
       Opts = #{no_dns_cache=>true},
       {ok, [
  -        {undefined, {1,2,3,4}, 0},
  +        {http, {1,2,3,4}, 0},
           {tcp, {4,3,2,1}, 25},
  -        {undefined, {0,0,0,0}, 1200},
  +        {http, {0,0,0,0}, 1200},
           {tls, {1,0,0,0,0,0,0,5}, 0}
       ]} =
           resolve("http://1.2.3.4, http://4.3.2.1:25;transport=tcp,"
  
positive.code: %% ===================================================================
  
  
  % -define(TEST, true).
  -ifdef(TEST).
  -include_lib("eunit/include/eunit.hrl").
  
  
negative.code: 
     
      {ok, [
          {http, {127,0,0,1}, 0},
          {https, {127,0,0,1}, 0},
          {http, {127,0,0,1}, 25},
          {tls, {127,0,0,1}, 0},
          {udp, {127,0,0,1}, 1234}
      ]} = 
  