@rob-c I tried to extract one full transfer from the logs with more http info: https://gist.github.com/kreczko/66f0d2fb47865821b8933b88045b87eb#file-one-full-transfer This is what happens around checksum request, then time out: ``` 220713 14:17:30 124 Xrd_Sched: running chksum inq=0 220713 14:17:30 124 Xrootd_jobXeq: Job chksum /xrootd/cms/store/data/Run2018A/EGamma/NANOAOD/UL2018_MiniAODv1_NanoAODv2_GT36-v1/70000/4DC52ADD-551B-7242-8334-B97E6348B997.root started 220713 14:17:30 124 http_Req: XrdHttpReq::Data! final=True 220713 14:17:30 124 7dc42260.738:[log in to unmask] http_Req: PostProcessHTTPReq req: 3 reqstate: 1 220713 14:17:30 124 7dc42260.738:[log in to unmask] http_Req: Checksum for HEAD /xrootd/cms/store/data/Run2018A/EGamma/NANOAOD/UL2018_MiniAODv1_NanoAODv2_GT36-v1/70000/4DC52ADD-551B-7242-8334-B97E6348B997.root adler32=30032735 220713 14:17:30 124 7dc42260.738:[log in to unmask] http_Protocol: Sending resp: 200 header len:97 220713 14:17:30 124 http_Protocol: Sending 97 bytes 220713 14:17:30 124 http_Req: XrdHttpReq request ended. 220713 14:17:30 124 Xrd_Poll: Poller 1 enabled 7dc42260.738:[log in to unmask] 220713 14:17:30 124 Xrootd_jobSendResult: sent async ok to 7dc42260.738:[log in to unmask] 220713 14:17:30 124 Xrootd_jobXeq: Job chksum /xrootd/cms/store/data/Run2018A/EGamma/NANOAOD/UL2018_MiniAODv1_NanoAODv2_GT36-v1/70000/4DC52ADD-551B-7242-8334-B97E6348B997.root completed 220713 14:17:39 124 Xrd_Sched: running 7dc42260.94:[log in to unmask] inq=0 220713 14:17:39 124 http_Protocol: Cleanup 220713 14:17:39 124 XrdLink: Unable to send to 7dc42260.94:[log in to unmask]; connection timed out 220713 14:17:39 124 http_Protocol: SSL_shutdown failed 220713 14:17:39 124 http_Protocol: Reset 220713 14:17:39 124 http_Req: XrdHttpReq request ended. ``` -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1736#issuecomment-1183228472 You are receiving this because you are subscribed to this thread. Message ID: <[log in to unmask]> ######################################################################## 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