Hi,
Thanks for the feedback. I spent some time with gt-tile-client today to see if 
there were any time gain by using MultithreadedHttpClient. I didn't see that, 
so I have decided to skip that part. Those two client's can live their lives 
within gt-wms and gt-wfs-ng, until we have something new in gt-http.

I do want to contribute my work on HttpClientFactory. Instead of looking at 
Apache HttpComponents, which are the successor to Commons HttpClient, I would 
like to look at the Http Client within JDK 11.

Regards,

Roar Brænden

> 10. des. 2020 kl. 13:29 skrev Mark Prins <mc.pr...@gmail.com>:
> 
> On 09-12-2020 09:47, Roar Brænden wrote:
>> Hi,
>> I have started to work on a new library gt-http that tries to collect all 
>> usage of HTTP clients within Geotools. For the moment there are two client 
>> implementations. SimpleHttpClient in gt-main and MultithreadedHttpClient in 
>> gt-wms and gt-wfs-ng. You see there are actually three, but the last two are 
>> almost identical.
>> MultithreadedHttpClient have the advantage that it uses a connection pool 
>> favoring connections to the same host. I see the advantage in using this for 
>> all the listed projects. The disadvantage is that you would have a new 
>> dependency on the external library commons-httpclient.
>> In the near future this dependency will vanish when Geotools is ready for 
>> JDK 11, and we could use the new HTTP client inside JDK. Before going that 
>> direction, it would be great to have one place for all HTTP clients.
>> If you really think it's horrible to include this dependency, I could turn 
>> it into a plugin.
>> Any opinions?
> 
> At the risk of this being out of scope; the commons-httpclient version 3 .x 
> that is in use by GeoTools is and has been EOL for quite a while. upgrades 
> from 3.x to 4.x or 5.x are non trivial because the API is quite different if 
> I recall correctly.
> So I'm ambivalent with respect to further reliance on an EOL dependency; on 
> the one hand the imapct can be quite substantial if something shows up awry 
> in that lib (this is ofcourse already a risk), on the otherhand you're 
> centralizing in one place, so that could make upgrading an easier task.
> 
> -M
> 
> 
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