A coarse investigation with `gdb` shows that 5.1.0 tries to interpret: `PUT /data/some/path/testfile HTTP/1.1` as the chunk size (the string before the very first `\n`). -- 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/1411#issuecomment-784996844 ######################################################################## 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