anchor.diff:        <<"HTTP/1.1 200 OK\r\n">>, 
         <<"Content-Length: 10\r\n\r\n">>,
         ?ECHO
  -   ];   
  +   ];
  +postman(<<"[\"0123456789\"]">>) ->
  +   [
  +      <<"HTTP/1.1 200 OK\r\n">>, 
  +      <<"Content-Length: 10\r\n\r\n">>,
  +      ?ECHO
  +   ];
   postman(_) ->
      undefined.
  
positive.code: 
     knet_mock_tcp:free().
  
  
  
  %%%----------------------------------------------------------------------------   
  
negative.code: 
     {ok, 
        [
           {200, <<"OK">>, _Head},
           ?ECHO
        ]
     } = m_http:once([m_http ||
  