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If a partial header was read, we previously did not return to the
poll loop. Instead, a read into the data buffer was attempted. If
that read actually succeeded (that is, a packet arrived between the
two read calls), then the next attempt to read the header resulted
in garbage size/offsets being attempted.
The fix is to simply check for a partial header read and return to the
poll loop immediately if one occurred.
git pull https://github.com/bbockelm/xrootd-1 fix_readv_headers
Or view, comment on, or merge it at:
https://github.com/xrootd/xrootd/pull/108
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