Hi jthiltges, We have found the source of the FD leak and have a patch ready. It was a combination of a misunderstanding of what the HTTP plugin should do when a socket error is encountered (98% of the cases) and a systemic error that didn't deal with an unexpected error presentation peculiar to the Linux kernel (2% of the cases). As for the oddity of not being able to send multiple HTTP requests on an open socket; do you have a small test program that demonstrates this behavior? It would speed thing along. So, two issues still outstanding. Andy -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/596#issuecomment-334047989 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1