[erlang-questions] UDP concurrent server

[Benoit Chesneau]

On Wed, Dec 9, 2015 at 11:07 AM Bogdan Andu <bog495@REDACTED> wrote:

> following the thread
> https://groups.google.com/forum/?hl=en#!topic/erlang-programming/6Q3cLtJdwIU
>
> as it seems that POSt to topic does not work
>
> After more tests the basic questions that remains ..
>
> Is there a way to have more than one process be blocked
> in gen_udp:recv/2 call as this seems to not be possible,
> probably because the way udp sockets work.
>
> Sequentially works as expected, but when when I try to spawn another
> process
> that makes and attempt to execute gen_udp:recv/2 while the first process
> already does
> gen_udp:recv/2 , the second process gives elready error. This means that 2
> process
> cannot concurrently do gen_udp:recv/2 .
>

You can if you tell to the udp socket to reuse the port:
https://github.com/refuge/rbeacon/blob/master/src/rbeacon.erl#L414-L425

If you do this any process will be able to reuse it and send/recv to it.

- benoît
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20151209/506314fd/attachment.htm>