Bug #124927 for Net-Async-HTTP: Suspected memory leak

Mon Mar 26 16:25:50 2018 andy [...] andybev.com - Ticket created

Subject:	Suspected memory leak
Date:	Mon, 26 Mar 2018 21:25:11 +0100
To:	bug-Net-Async-HTTP [...] rt.cpan.org
From:	Andrew Beverley <andy [...] andybev.com>

When GETting from some HTTPS hosts, it appears that some memory is not released, in particular arrays (and their references). Strangely this only happens with some HTTPS hosts, not all, but I cannot work out the difference between those that do and don't exhibit the problem. The attached script shows the behaviour, printing the number of arrays in the arena after each set of requests. After running the script for an hour or so, you can see that the number gradually increases. I have tried this with 2 machines on 2 different networks: one is Perl 5.22.1 and the other is 5.24.1. Both use Net::Async::HTTP version 0.41. I would like to sponsor the fix for this problem, if possible. Thanks!

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Tue Mar 27 05:31:11 2018 andy [...] andybev.com - Correspondence added

Subject:	Re: [rt.cpan.org #124927] Suspected memory leak
Date:	Tue, 27 Mar 2018 10:30:50 +0100
To:	bug-Net-Async-HTTP [...] rt.cpan.org
From:	Andrew Beverley <andy [...] andybev.com>

I'm not sure whether it helps, but after the process has been running for a long time, a core dump of the process's memory shows lots of data that looks like SSL certificate information. For example: 295487 www.digicert.com1 0 197097 DigiCert Inc1 168802 DigiCert Global Root CA 98622 DigiCert Global Root CA0 98579 digicert inc1 98496 O_lv^ 98490 JL}> 98487 www.digicert.com 98487 DigiCert Inc The numbers above define how many references of that particular string there are in the process's memory.

Tue Jul 17 12:44:34 2018 leonerd-cpan [...] leonerd.org.uk - Correspondence added

I suspect this may be a bug in IO::Socket::SSL itself. I have opened at ticket at https://rt.cpan.org/Ticket/Display.html?id=125867 -- Paul Evans

Tue Jul 17 12:44:34 2018 The RT System itself - Status changed from 'new' to 'open'

Tue Nov 26 05:58:04 2019 leonerd-cpan [...] leonerd.org.uk - Correspondence added

On Tue Jul 17 12:44:34 2018, PEVANS wrote: Show quoted text

> I suspect this may be a bug in IO::Socket::SSL itself. I have opened > at ticket at > https://rt.cpan.org/Ticket/Display.html?id=125867

This was indeed an SSL problem that was fixed upstream. -- Paul Evans

Tue Nov 26 05:58:05 2019 leonerd-cpan [...] leonerd.org.uk - Status changed from 'open' to 'resolved'