Hi Andy,
the criticality comes from EGI running the following nagios check against WebDAV endpoints:
https://gitlab.cern.ch/lcgdm/nagios-plugins-webdav/blob/master/src/check_webdav
They plan to make this part of the critical profile (i.e. sties will be marked as broken if they fail the test) sometime in the coming weeks / months (may depend on the number of failures they observe).
In my opinion, though, the probe is also broken in various ways. It seems to provide a bad Content-Length with modern libcurl versions (that's how I found #916 ) and for old libcurl versions, it uses a chunked transfer (but at least in my tests, it sent some garbage numbers as you can see above).
So in my opinion, the probe issues are worse, but depending on how they are going to fix it, it might be that the fix in xrootd for this issue is still an EGI requirement (even though an FTS does not seem to use chunked encoding, so they test something with the probe that does not match actual real world usage...).
Cheers,
Oliver
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