Shoot - hit 'comment' too early. See how the second example returns to epoll after reading the partial header. I couldn't find any case where the client returned to epoll and caused the "invalid argument"; nor could I find a case where the client *didn't* return to epoll and was successful. However, don't take this as a smoking gun - probably not enough sample size. --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/45#issuecomment-41283556 ######################################################################## 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