anchor.diff:  
      
       {ok, [
  -        {undefined, {127,0,0,1}, 0},
  -        {undefined, {127,0,0,1}, 0},
  -        {undefined, {127,0,0,1}, 25},
  +        {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}
       ]} = 
  
positive.code: basic() ->
      Opts = #{no_dns_cache=>true},
      {ok, [
          {undefined, {1,2,3,4}, 0},
          {tcp, {4,3,2,1}, 25},
          {undefined, {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,"
  
negative.code: %% ===================================================================
  
  
  %-define(TEST, true).
  -ifdef(TEST).
  -include_lib("eunit/include/eunit.hrl").
  
  