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| author | Loïc Hoguin <[email protected]> | 2016-08-29 12:39:49 +0200 |
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| committer | Loïc Hoguin <[email protected]> | 2016-08-29 12:40:03 +0200 |
| commit | c807880f7ac73f813b2660ea81a00f7712a4e793 (patch) | |
| tree | ba1d09e9b177f230665a80513b33fbd532000ce4 /archives/extend/2013-September/000240.html | |
| parent | b1df25a7d9cda697513650659b781b55b40898f8 (diff) | |
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diff --git a/archives/extend/2013-September/000240.html b/archives/extend/2013-September/000240.html new file mode 100644 index 00000000..a5c5c8b3 --- /dev/null +++ b/archives/extend/2013-September/000240.html @@ -0,0 +1,140 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> +<HTML> + <HEAD> + <TITLE> [99s-extend] timeouts and slow clients in cowboy loop handler + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20timeouts%20and%20slow%20clients%20in%20cowboy%20loop%20handler&In-Reply-To=%3C523C9A5F.3080805%40ninenines.eu%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <style type="text/css"> + pre { + white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ + } + </style> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="000239.html"> + <LINK REL="Next" HREF="000241.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[99s-extend] timeouts and slow clients in cowboy loop handler</H1> + <B>Loïc Hoguin</B> + <A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20timeouts%20and%20slow%20clients%20in%20cowboy%20loop%20handler&In-Reply-To=%3C523C9A5F.3080805%40ninenines.eu%3E" + TITLE="[99s-extend] timeouts and slow clients in cowboy loop handler">essen at ninenines.eu + </A><BR> + <I>Fri Sep 20 20:56:31 CEST 2013</I> + <P><UL> + <LI>Previous message: <A HREF="000239.html">[99s-extend] timeouts and slow clients in cowboy loop handler +</A></li> + <LI>Next message: <A HREF="000241.html">[99s-extend] timeouts and slow clients in cowboy loop handler +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#240">[ date ]</a> + <a href="thread.html#240">[ thread ]</a> + <a href="subject.html#240">[ subject ]</a> + <a href="author.html#240">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>chunk only returns when the client has received the chunk, so the +timestamps solution should work. + +As for the timeout, you can simply use erlang:send_after or something +like usual and the message will arrive in info/3. + +On 09/20/2013 08:54 PM, akonsu wrote: +><i> thanks! +</I>><i> +</I>><i> how to implement timeout callback manually? if I had receive then I +</I>><i> would just use timeout clause there, but with the handler I do not know... +</I>><i> +</I>><i> I have doubts about validity of my question on the erlang list. I later +</I>><i> realised that there is no problem receiving messages in my handler from +</I>><i> my upstream process, I can do it fast enough and shove everything to the +</I>><i> response. my real problem is to determine if the http client is reading +</I>><i> fast enough from the response... +</I>><i> +</I>><i> +</I>><i> 2013/9/20 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> Loop handlers close after a while regardless of what you send, it +</I>><i> only checks what the client sends. The best way for you would be to +</I>><i> disable that timeout and handle it manually. +</I>><i> +</I>><i> As for the second question, I'm still reading the thread on +</I>><i> erlang-questions but I've seen some good ideas about timestamps so far. +</I>><i> +</I>><i> +</I>><i> On 09/20/2013 08:47 PM, akonsu wrote: +</I>><i> +</I>><i> Hi, +</I>><i> +</I>><i> I am using loop handler and I stream from it: +</I>><i> +</I>><i> info({stream, Part}, Req, S) -> +</I>><i> ok = cowboy_req:chunk(Part, Req), +</I>><i> {loop, Req, S, hibernate}; +</I>><i> +</I>><i> I have two questions: +</I>><i> +</I>><i> 1. on timeouts cowboy sends 204 No Content. In my case it is not the +</I>><i> right response because I may have already sent some data. Is +</I>><i> there a way +</I>><i> to send a custom response? +</I>><i> +</I>><i> 2. how to check if the client is too slow and is not reading the +</I>><i> response stream fast enough? If this happens, then I need to +</I>><i> disconnect. +</I>><i> +</I>><i> I can live without 1. but I need to figure out 2. Please help. +</I>><i> +</I>><i> thank you! +</I>><i> Konstantin +</I>><i> +</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> <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> +</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> + +-- +Loïc Hoguin +Erlang Cowboy +Nine Nines +<A HREF="http://ninenines.eu">http://ninenines.eu</A> + +</PRE> + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="000239.html">[99s-extend] timeouts and slow clients in cowboy loop handler +</A></li> + <LI>Next message: <A HREF="000241.html">[99s-extend] timeouts and slow clients in cowboy loop handler +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#240">[ date ]</a> + <a href="thread.html#240">[ thread ]</a> + <a href="subject.html#240">[ subject ]</a> + <a href="author.html#240">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://lists.ninenines.eu/listinfo/extend">More information about the Extend +mailing list</a><br> +</body></html> |