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From sebb <seb...@gmail.com>
Subject Re: Idle connection timeout where Keep-Alive is not sent
Date Thu, 27 Feb 2014 11:38:09 GMT
On 26 February 2014 07:31, Milamber <milamber@apache.org> wrote:
>
> Le 26/02/2014 02:21, sebb a ecrit :
>
>> HC4 allows one to provide a ConnectionKeepAliveStrategy which allows
>> one to provide a time-to-live (TTL) for the connection, based on the
>> HttpResponse and the HttpContext
>>
>> There is a default implementation which uses the Keep-Alive header to
>> calculate the time.
>>
>> So we can subclass that, and provide our own calculation if the
>> default one does not find the header.
>>
>> That's easy, and I've tried it.
>>
>> What is not so obvious is how to specify which URLs need what idle
>> timeouts.
>> The simplest would be to use a property to apply a timeout to any
>> requests that don't return the Keep-Alive header, but that may be too
>> crude in general, as it would enforce timeouts on every host.
>>
>> However it would be a good proof of concept that could be used against S3
>> etc.
>>
>> We could add an idle timeout field to the HttpSampler GUIbut that
>> might be tedious to maintain. Adding it to the Http Defaults would
>> work provided that there was a single value that suited all the Http
>> requests in scope (not much better than using a global property).
>>
>> Would that be sufficient?
>
>
> Yes seems sufficient in a first time (have a property or idle timeout field
> to the Http Defautls GUI).
>
>
>> Or do we need a way to specify the timeout on a per-host basis?
>> Maybe a list of hostnames and timeouts?
>>
>> Any other bright ideas?
>>
>> I propose to implement the single property method (but document it as
>> subject to change) so that it can be tested in earnest.
>
>
>
> +1.
>
> Thanks
>
> Milamber
>
>
>>
>> Then we can see how it might need to be extended.
>>

OK, the idle timeout code has been implemented - for httpclient4 only,
I don't think it's worth it for the HC3.1 or Java stacks.

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