[erlang-questions] How to solve the blocking accept call in atcp_listener process ?
Wed May 20 01:58:00 CEST 2009
ok, but it's not gen_server compatible !
James Hague wrote:
> > Many examples uses the async_accept primitive from the module prim_inet.
> > This primitive is not documented (low level) and might change or dissapear.
> > Do you know examples which don't use it but use a "clean" solution for the blocking accept call ?
> > Or could you show an elegant solution in this forum ?
> You could always put the blocking call into it's own process. When a
> connection occurs, change the port's owner and send the port in a
> message. (And open the port in passive mode to make sure messages
> aren't received before switching the owner.)
The way I've always done it is to spawn the acceptor as:
L = listen(...),
listen_loop(L) - >
Top = self(),
spawn(fun() - >
Sock = accept(L),
Top ! one_more,
one_more - >
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