anchor.diff:       traffic_ping_pong_small_sendto_and_recvfrom_udpL,
        traffic_ping_pong_medium_sendto_and_recvfrom_udp4,
        traffic_ping_pong_medium_sendto_and_recvfrom_udp6,
  +     traffic_ping_pong_medium_sendto_and_recvfrom_udpL,
   
        traffic_ping_pong_small_sendmsg_and_recvmsg_tcp4,
        traffic_ping_pong_small_sendmsg_and_recvmsg_tcp6,
  
positive.code:          traffic_ping_pong_small_sendto_and_recvfrom_udpL/1,
           traffic_ping_pong_medium_sendto_and_recvfrom_udp4/1,
           traffic_ping_pong_medium_sendto_and_recvfrom_udp6/1,
  
           traffic_ping_pong_small_sendmsg_and_recvmsg_tcp4/1,
           traffic_ping_pong_small_sendmsg_and_recvmsg_tcp6/1,
  
negative.code:                    ?TT(?SECS(45)),
                     InitState = #{domain => inet6,
                                   proto  => udp,
                                   msg    => Msg,
                                   num    => Num},
                     ok = traffic_ping_pong_sendto_and_recvfrom_udp(InitState)
             end).
  
  
  
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %% This test case is intended to test that the sendto and recvfrom 
  %% functions by repeatedly sending a meassage between two entities.
  %% The same basic test case is used for two different message sizes; 
  %% small (8 bytes) and medium (8K).
  %% The message is sent from A to B and then back again. This is 
  %% repeated a set number of times (more times the small the message).
  %% This is the 'medium' message test case, for Unix Domain (dgram) socket.
  
  traffic_ping_pong_medium_sendto_and_recvfrom_udpL(suite) ->
      [];
  traffic_ping_pong_medium_sendto_and_recvfrom_udpL(doc) ->
      [];
  traffic_ping_pong_medium_sendto_and_recvfrom_udpL(_Config) when is_list(_Config) ->
      Msg = l2b(?TPP_MEDIUM),
      Num = ?TPP_MEDIUM_NUM,
      tc_try(traffic_ping_pong_medium_sendto_and_recvfrom_udpL,
             fun() -> has_support_unix_domain_socket() end,
             fun() ->
                     ?TT(?SECS(45)),
                     InitState = #{domain => local,
                                   proto  => default,
                                   msg    => Msg,
                                   num    => Num},
                     ok = traffic_ping_pong_sendto_and_recvfrom_udp(InitState)
  