Hello,
In the following scenario, where the "Stat request" of a file returns a larger size than the actual "read request", the XrdHttp component would enter a loop.
To reproduce this, perform a GET request on a "script file". The stat on the script will return a fixed size (e.g 4096), but upon the read request, the actual output will be different. At this point, XrdHttp enters a loop trying to read the remaining bytes.
In my particular case, I am accessing the `/proc/whoami` script on an EOS system (logs attached).
This change prevents this scenario and abruptly interrupts the HTTP connection.
[xrdhttp.log](https://github.com/xrootd/xrootd/files/2098289/xrdhttp.log)
You can view, comment on, or merge this pull request online at:
https://github.com/xrootd/xrootd/pull/744
-- Commit Summary --
* Prevent issue in scenario where stat request returns larger size than the actual read request
-- File Changes --
M src/XrdHttp/XrdHttpReq.cc (9)
-- Patch Links --
https://github.com/xrootd/xrootd/pull/744.patch
https://github.com/xrootd/xrootd/pull/744.diff
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