[erlang-questions] Starting an echo web server from (bash) shell!

Ahmed Omar <>
Tue Nov 2 10:07:10 CET 2010


Hi zabrane,

I tried with the options you supplied and it works fine. Can you please post
the code maybe there's a problem there?
Also how are you testing it?

On Tue, Nov 2, 2010 at 12:17 AM, zabrane Mikael <> wrote:

> Hi Ahmed,
>
> Following your suggestion, I removed the "catch" and print out the error
> with:
> io:format("Accept failed with error: ~p~n", [Error]).
>
> I got:
> Accept failed with error: closed
>
> These are my socket options:
> -define(SOCK_TCP_PORT, 8888).
> -define(SOCK_TCP_OPTS, [binary,
>                   {nodelay,   true},
>                   {active,    false},
>                   {packet,    http_bin},
>                   {reuseaddr, true}]).
>
> Hope this help.
>
> --
> Regards
> Zabrane
>
> 2010/11/2 Ahmed Omar <>:
> > I would suggest you change the code to reveal the original error that you
> > got
> > so for Example could you raise the error that you get?
> > or remove the catch and change the other case clause to {error, Error}
> and
> > print out that Error?
> > {error, Error}->
> >        io:format("~p~n", [Error])
> > end.
> >
> >
> > On Mon, Nov 1, 2010 at 11:09 PM, zabrane Mikael <>
> wrote:
> >>
> >> Hi list,
> >>
> >> I'm facing a strange problem when trying to start my very basic echo
> >> web server from (bash) shell.
> >>
> >> It doesn't work when I try to run it from (bash) shell with an error
> >> in "gen_tcp:accept/1" call:
> >> $ erl -s bews
> >>
> >>
> >> But it works fine when I run it from the Erlang shell:
> >> $ erl
> >> 1> bews:start().
> >>
> >> The server is simply listening on socket 8888 and echo back what it
> gets:
> >> ...
> >> case catch gen_tcp:accept(ListenSocket) of
> >>        {ok, Sock} ->
> >>               ...
> >>        _ ->
> >>           exit({error,accept_failed})
> >> end.
> >>
> >> Any advices please?
> >>
> >> N.B: I'm under OSX Snow Leopard, Erlang R14B (erts-5.8.1)
> >>
> >> --
> >> Regards
> >> Zabrane
> >>
> >> ________________________________________________________________
> >> erlang-questions (at) erlang.org mailing list.
> >> See http://www.erlang.org/faq.html
> >> To unsubscribe; mailto:
> >>
> >
> >
> >
> > --
> > Best Regards,
> > - Ahmed Omar
> > http://nl.linkedin.com/in/adiaa
> > Follow me on twitter
> > @spawn_think
> >
>



-- 
Best Regards,
- Ahmed Omar
http://nl.linkedin.com/in/adiaa
Follow me on twitter
@spawn_think <http://twitter.com/#!/spawn_think>


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