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<H1>[99s-extend] timeout in cowboy loop handler</H1>
<B>Loïc Hoguin</B>
<A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20timeout%20in%20cowboy%20loop%20handler&In-Reply-To=%3C525E0AAF.3070203%40ninenines.eu%3E"
TITLE="[99s-extend] timeout in cowboy loop handler">essen at ninenines.eu
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<I>Wed Oct 16 05:40:31 CEST 2013</I>
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<PRE>Infinite is bad practice, yes. Infinite means some connections will
*never* be closed, eating FDs and memory for nothing.
I'm not sure why you want to receive messages, you could just use a
normal handler that asks for more data, sends it, ask for more data,
sends it, etc.
On 10/16/2013 05:31 AM, akonsu wrote:
><i> thanks for your help. suppose that I want to stream live audio. I do not
</I>><i> know how long my audio program will be, and as I stream it, if I have a
</I>><i> timeout, the server will just disconnect the user that listens to the
</I>><i> audio in the browser. and the browser won't reconnect. Would you suggest
</I>><i> the "right" way to implement something like that? Would infinite timeout
</I>><i> suffice? or is it a bad practice? another type of handler maybe?
</I>><i>
</I>><i>
</I>><i> 2013/10/15 Loïc Hoguin <<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>>>
</I>><i>
</I>><i> Yep. And it will also disconnect if the client sends too much. It
</I>><i> has to disconnect and reconnect eventually, there's no way around it.
</I>><i>
</I>><i>
</I>><i> On 10/16/2013 05:03 AM, akonsu wrote:
</I>><i>
</I>><i> so it will disconnect if the client only listens and sends
</I>><i> nothing to
</I>><i> the socket, correct?
</I>><i>
</I>><i>
</I>><i> 2013/10/15 Loïc Hoguin <<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>
</I>><i> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>
</I>><i> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>>>>
</I>><i>
</I>><i>
</I>><i> The socket connected to the client.
</I>><i>
</I>><i> TCP isn't perfect, there is no way to be 100% sure the
</I>><i> client is
</I>><i> still connected, hence the timeout. If the client is still
</I>><i> up you
</I>><i> should make it reconnect.
</I>><i>
</I>><i>
</I>><i> On 10/16/2013 04:55 AM, akonsu wrote:
</I>><i>
</I>><i> Hello,
</I>><i>
</I>><i> the documentation for `init` at
</I>><i> <A HREF="http://ninenines.eu/docs/en/____cowboy/HEAD/manual/cowboy_____loop_handler">http://ninenines.eu/docs/en/____cowboy/HEAD/manual/cowboy_____loop_handler</A>
</I>><i> <<A HREF="http://ninenines.eu/docs/en/__cowboy/HEAD/manual/cowboy___loop_handler">http://ninenines.eu/docs/en/__cowboy/HEAD/manual/cowboy___loop_handler</A>>
</I>><i>
</I>><i>
</I>><i> <<A HREF="http://ninenines.eu/docs/en/__cowboy/HEAD/manual/cowboy___loop_handler">http://ninenines.eu/docs/en/__cowboy/HEAD/manual/cowboy___loop_handler</A>
</I>><i> <<A HREF="http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_loop_handler">http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_loop_handler</A>>>
</I>><i> says:
</I>><i>
</I>><i> The receive loop will run for a duration of up to Timeout
</I>><i> milliseconds
</I>><i> after it last received data from the socket, at which
</I>><i> point it
</I>><i> will stop
</I>><i> and send a 204 No Content reply.
</I>><i>
</I>><i> What socket does it refer to? I had an impression that
</I>><i> the loop
</I>><i> handles
</I>><i> erlang messages. Do these messages come through a
</I>><i> socket (sorry
</I>><i> about a
</I>><i> trivial question, but I am new to erlang), and this is the
</I>><i> socket that
</I>><i> the docs talk about?
</I>><i>
</I>><i> The reason why I am asking is because I used to have a
</I>><i> Timeout
</I>><i> of 60000,
</I>><i> and even though messages kept coming non stop, it still
</I>><i> kept
</I>><i> disconnecting after a minute, until I set Timeout to
</I>><i> infinity.
</I>><i>
</I>><i> thanks
</I>><i> Konstantin
</I>><i>
</I>><i>
</I>><i> ___________________________________________________
</I>><i> Extend mailing list
</I>><i> <A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.ninenines.eu</A> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.ninenines.eu</A>>
</I>><i> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.__ninenines.eu</A>
</I>><i> <mailto:<A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.ninenines.eu</A>>>
</I>><i> <A HREF="http://lists.ninenines.eu:81/____listinfo/extend">http://lists.ninenines.eu:81/____listinfo/extend</A>
</I>><i> <<A HREF="http://lists.ninenines.eu:81/__listinfo/extend">http://lists.ninenines.eu:81/__listinfo/extend</A>>
</I>><i>
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</I>><i>
</I>><i>
</I>><i>
</I>><i> --
</I>><i> Loďc Hoguin
</I>><i> Erlang Cowboy
</I>><i> Nine Nines
</I>><i> <A HREF="http://ninenines.eu">http://ninenines.eu</A>
</I>><i>
</I>><i>
</I>><i>
</I>><i>
</I>><i> --
</I>><i> Loïc Hoguin
</I>><i>
</I>><i> Erlang Cowboy
</I>><i> Nine Nines
</I>><i> <A HREF="http://ninenines.eu">http://ninenines.eu</A>
</I>><i>
</I>><i>
</I>
--
Loïc Hoguin
Erlang Cowboy
Nine Nines
<A HREF="http://ninenines.eu">http://ninenines.eu</A>
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