anchor.diff:  
   
   %%--------------------------------------------------------------------
  -%% Func: code_change/3
  -%% Purpose: Convert process state when code is changed
  -%% Returns: {ok, NewState}
  +%% Function: code_change(OldVsn, State, Extra)
  +%% Descrip.: Convert process state when code is changed
  +%% Returns : {ok, NewState}
   %%--------------------------------------------------------------------
   code_change(_OldVsn, State, _Extra) ->
       {ok, State}.
  
positive.code: -module(clienttransaction).
  
  -behaviour(gen_server).
  %%--------------------------------------------------------------------
  %% Include files
  %%--------------------------------------------------------------------
  
  %%--------------------------------------------------------------------
  %% External exports
  -export([
  	 start_link/6,
  	 test/0
  	]).
  
  %% gen_server callbacks
  -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
  
  -record(state, {
  	  branch,	%% string(), the Via branch paramter for this client transaction
  	  socket_in,	%% sipsocket record(), the socket the original request was received on
  
negative.code: %%           Status = integer(), SIP status code
  %%           Reason = string(), SIP reason phrase
  %%           State  = state record()
  %% Descrip.: Fake receiving an '408 Request Timeout' response. See
  %%           comments for fake_request_response/3 above for more info.
  %% Returns : NewState = state record()
  %%--------------------------------------------------------------------
  