anchor.diff:  call(SvcName, App, Msg, Opts, Caller) ->
       c(find_state(SvcName), App, Msg, Opts, Caller).
   
  -c(#state{service_name = Svc, options = [{_, Mask} | _]} = S,
  +c(#state{service_name = SvcName, options = [{_, Mask} | _]} = S,
     App,
     Msg,
     Opts,
     Caller) ->
       case find_transport(App, Msg, Opts, S) of
           {_,_,_} = T ->
  -            send_request(T, Mask, Msg, Opts, Caller, Svc);
  +            send_request(T, Mask, Msg, Opts, Caller, SvcName);
           false ->
               {error, no_connection};
           {error, _} = No ->
  
positive.code:     exit(T).
  
  %% ---------------------------------------------------------------------------
  %% # failover/[23]
  %% ---------------------------------------------------------------------------
  
  %% Failover as a consequence of request_peer_down/2.
  failover({_, #request{handler = Pid} = Req, TRef}, S) ->
      Pid ! {failover, TRef, rt(Req, S)}.
  
  %% Failover as a consequence of store_request/4.
  failover(TRef, Seqs, S)
    when is_reference(TRef) ->
      case lookup_request(Seqs, TRef) of
          #request{} = Req ->
              failover({Seqs, Req, TRef}, S);
          false ->
              ok
      end.
  
  %% prepare_request returned a binary ...
  rt(#request{packet = #diameter_packet{msg = undefined}}, _) ->
      false; %% Not what we should do but binaries are only parially supported
  
  %% ... or not.
  rt(#request{packet = #diameter_packet{msg = Msg},
              dictionary = Dict}
     = Req,
     S) ->
      find_transport(get_destination(Dict, Msg), Req, S).
  
  %% ---------------------------------------------------------------------------
  %% # report_status/5
  
negative.code: %% The mod field of the #diameter_app{} here includes any extra
  %% arguments passed to diameter:call/2.
  
  send_request({TPid, Caps, App}
               = Transport,
               Mask,
               Msg,
               Opts,
               Caller,
               SvcName) ->
      #diameter_app{module = ModX}
          = App,
  
  