[erlang-questions] tcp data in a gen_fsm

Max Lapshin max.lapshin@REDACTED
Mon Nov 30 08:12:37 CET 2015

We have fully refused from using gen_fsm and especially in handling
protocol states in gen_fsm.

Everywhere we use something like:

handle_info({tcp, Socket, Input},  #state{protocol_state = S0} = State) ->
   {ok, OutputCommands, S1} = some_protocol:handle(Input, S0),
   ..handle somehow OutputCommands
  inet:setopts(Socket, [{active,once}]),
  {noreply, State#state{protocol_state = S1}}.

Such approach allows to record Input to file and write a test for output
commands. Also it allows more easily handle situation when there is more
than 1 command in Input packet.
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