anchor.diff:  	  tls_upgrading_data_connection = false,
   	  ftp_extension = ?FTP_EXT_DEFAULT
   	 }).
  +
  +-record(recv_chunk_closing, {
  +          dconn_closed = false,
  +          pos_compl_received = false,
  +          client_called_us = false
  +         }).
   
   
   -type shortage_reason()  :: 'etnospc' | 'epnospc'.
  
positive.code: handle_call({_, recv_chunk}, _, #state{chunk = false} = State) ->
      {reply, {error, "ftp:recv_chunk_start/2 not called"}, State}; 
  
  handle_call({_, recv_chunk}, From, #state{chunk = true} = State0) ->
      State = activate_data_connection(State0),
      {noreply, State#state{client = From, caller = recv_chunk}};
  
negative.code: 
  %%--------------------------------------------------------------------------
  %% File handling - chunk_transfer complete
  
  handle_ctrl_result({pos_compl, _}, #state{client = From,
                                            caller = #recv_chunk_closing{dconn_closed       = true,
                                                                         client_called_us   = true,
                                                                         pos_compl_received = false
                                                                        }}
  		   = State0) when From =/= undefined ->
      %% The pos_compl was the last event we waited for, finnish and clean up
      ?DBG("recv_chunk_closing pos_compl, last event",[]),
      gen_server:reply(From, ok),
      activate_ctrl_connection(State0),
      {noreply, State0#state{caller = undefined,
                             chunk = false,
                             client = undefined}};
  
  handle_ctrl_result({pos_compl, _}, #state{caller = #recv_chunk_closing{}=R}
  		   = State0) ->
      %% Waiting for more, don't care what
      ?DBG("recv_chunk_closing pos_compl, wait more",[]),
      {noreply, State0#state{caller = R#recv_chunk_closing{pos_compl_received=true}}};
  
  
  %%--------------------------------------------------------------------------
  %% File handling - recv_file
  