Hi Andy,

So, indeed, if you can provide the setup your doing it would help.

Here's the full config I use:
xrootd.txt

Could you post a trivial test that provokes this issue?

Well, not really trivial... The reliable reproducer is to run something like:

gfal-copy -vvv -f -K adler32 --checksum-mode both davs://srmdav.ific.uv.es:8443/webdav/lustre/ific.uv.es/grid/atlas/atlaslocalgroupdisk/rucio/user/cescobar/ed/65/user.cescobar.21356729._000011.out.root davs://xrootd-dev.physik.uni-bonn.de:1094/data/grid/atlas/user/scratch/foo

with the target machine (xrootd-dev) being firewalled. This means I force davix to connect many times, i.e. check file existence, delete the file if it already exists, try a push (which will fail due to the firewall), try a pull (which will fail since the source did not provide a macaroon) and finally falling back to a streamed copy.
In the end, this is just a nasty hack to force davix to create many connections in series. With this command, I do reliable get a crash (or even two) > 90 % of the time.
I'm not aware of an easy way to force davix directly to do that via commandline, though :-(.

Cheers,
Oliver

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