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Re: curl_easy_perform spawns a new thread

From: Thomas de Toulmon via curl-library <curl-library_at_lists.haxx.se>
Date: Tue, 19 Jul 2022 16:00:35 +0200

Hi Daniel,

Many thanks for your answer.
Indeed I was able to build with the --disable-threaded-resolver option to
configure and that solved the problem.

From the documentation I could not find any bad consequences other than the
name resolution blocking but this is no worries for me as I run in our
internal network and I doubt the DNS would take long. Also that only
happens a few times at the start of the whole process.
Are there any other bad consequences I should be aware of?

Thanks again for your swift answer.

Best,
Thomas

On Tue, Jul 19, 2022 at 11:24 AM Daniel Stenberg <daniel_at_haxx.se> wrote:

> On Tue, 19 Jul 2022, Thomas de Toulmon via curl-library wrote:
>
> > I have the following issue in my code. I call curl_easy_perform (via the
> cpr
> > library) and it spawns a new thread. I was able to verify that this is
> > precisely the call to curl_easy_perform that spawns a new thread and
> > terminates it before returning.
> >
> > Is there a way I can prevent this from happening? I.e. to have
> > curl_easy_perform run in the current thread and prevent it from spawning
> a
> > new thread?
>
> If you use a libcurl built to use the threaded resolver (which is the
> default
> one), libcurl will fire up a new thread for resolving names. That's a
> built-in
> choice. The thread is only used for resolving names and nothing else.
>
> You can opt to build libcurl with the stock synch resolver or with c-ares,
> but
> those choices then come with other possible downsides.
>
> --
>
> / daniel.haxx.se
> | Commercial curl support up to 24x7 is available!
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-- 
Thomas Bottée de Toulmon
Market Microstructure Analyst
Oryctérope Transalpin SARL, a TransMarket Group Company
Rue du Léman 18A, 1920 Martigny
+41 27 544 0905 |   thomas.de.toulmon_at_ortr.ch


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Received on 2022-07-19