anchor.diff:                  {ok, _} -> ok;
                   {error, Error} -> {error, Error}
               end;
  -        {error, not_found} ->
  +        not_found ->
               {error, sipapp_not_found}
       end.    
   
  
positive.code:     ok.
  
  sipmsg(AppId, _CallId, Header, Transport, Binary) ->
      case AppId:config_trace() of
          {File, all} ->
              AppName = AppId:name(),
              Msg = print_packet(AppName, Header, Transport, Binary),
  
negative.code: %% @doc NkSIP SIP basic message print and trace tool
  %%
  %% This module implements a simple but useful SIP trace utility. 
  %% You can configure any SipApp to trace SIP messages sent or received
  %% from specific IPs, to console or a disk file.
  -module(nksip_trace).
  
  -author('Carlos Gonzalez <carlosj.gf@gmail.com>').
  