bonjour,
une trace compléte client 100
D [01/Jun/2017:06:02:11 +0200] [Client 99] bytes=0, http_state=0, data_remaining=75
D [01/Jun/2017:06:02:11 +0200] [Client 99] Flushing write buffer.
D [01/Jun/2017:06:02:11 +0200] [Client 99] New state is HTTP_STATE_WAITING
D [01/Jun/2017:06:02:11 +0200] [Client 99] Waiting for request.
D [01/Jun/2017:06:02:11 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [01/Jun/2017:06:02:11 +0200] [Client 99] HTTP_STATE_WAITING Closing for error 32 (Broken pipe)
D [01/Jun/2017:06:02:11 +0200] [Client 99] Closing connection.
D [01/Jun/2017:06:02:11 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
I [01/Jun/2017:06:02:12 +0200] Expiring subscriptions...
D [01/Jun/2017:06:14:41 +0200] [Client 100] Server address is "/var/run/cups/cups.sock".
D [01/Jun/2017:06:14:41 +0200] [Client 100] Accepted from localhost (Domain)
D [01/Jun/2017:06:14:41 +0200] [Client 100] Waiting for request.
I [01/Jun/2017:06:14:41 +0200] Expiring subscriptions...
D [01/Jun/2017:06:14:41 +0200] cupsdAddCert: Adding certificate for PID 0
D [01/Jun/2017:06:14:41 +0200] Report: clients=1
D [01/Jun/2017:06:14:41 +0200] Report: jobs=23
D [01/Jun/2017:06:14:41 +0200] Report: jobs-active=0
D [01/Jun/2017:06:14:41 +0200] Report: printers=1
D [01/Jun/2017:06:14:41 +0200] Report: stringpool-string-count=4532
D [01/Jun/2017:06:14:41 +0200] Report: stringpool-alloc-bytes=8992
D [01/Jun/2017:06:14:41 +0200] Report: stringpool-total-bytes=84080
D [01/Jun/2017:06:14:41 +0200] [Client 100] POST / HTTP/1.1
D [01/Jun/2017:06:14:41 +0200] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [01/Jun/2017:06:14:41 +0200] [Client 100] Read: status=200
D [01/Jun/2017:06:14:41 +0200] [Client 100] No authentication data provided.
D [01/Jun/2017:06:14:41 +0200] [Client 100] 2.0 CUPS-Get-Printers 1
D [01/Jun/2017:06:14:41 +0200] CUPS-Get-Printers
D [01/Jun/2017:06:14:41 +0200] [Client 100] Returning IPP successful-ok for CUPS-Get-Printers (no URI) from localhost
D [01/Jun/2017:06:14:41 +0200] [Client 100] Content-Length: 11685
D [01/Jun/2017:06:14:41 +0200] [Client 100] cupsdSendHeader: code=200, type="application/ipp", auth_type=0
D [01/Jun/2017:06:14:41 +0200] [Client 100] con->http=0x5599cb343270
D [01/Jun/2017:06:14:41 +0200] [Client 100] cupsdWriteClient error=0, used=0, state=HTTP_STATE_POST_SEND, data_encoding=HTTP_ENCODING_LENGTH, data_remaining=11685, response=0x5599cb2bd730(IPP_STATE_DATA), pipe_pid=0, file=-1
D [01/Jun/2017:06:14:41 +0200] [Client 100] Writing IPP response, ipp_state=IPP_STATE_DATA, old wused=0, new wused=0
D [01/Jun/2017:06:14:41 +0200] [Client 100] bytes=0, http_state=0, data_remaining=11685
D [01/Jun/2017:06:14:41 +0200] [Client 100] Flushing write buffer.
D [01/Jun/2017:06:14:41 +0200] [Client 100] New state is HTTP_STATE_WAITING
D [01/Jun/2017:06:14:41 +0200] [Client 100] Waiting for request.
D [01/Jun/2017:06:14:41 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [01/Jun/2017:06:14:41 +0200] [Client 100] POST / HTTP/1.1
D [01/Jun/2017:06:14:41 +0200] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [01/Jun/2017:06:14:41 +0200] [Client 100] Read: status=200
D [01/Jun/2017:06:14:41 +0200] [Client 100] No authentication data provided.
D [01/Jun/2017:06:14:41 +0200] [Client 100] 2.0 CUPS-Get-Classes 1
D [01/Jun/2017:06:14:41 +0200] CUPS-Get-Classes
D [01/Jun/2017:06:14:41 +0200] [Client 100] Returning IPP successful-ok for CUPS-Get-Classes (no URI) from localhost
D [01/Jun/2017:06:14:41 +0200] [Client 100] Content-Length: 75
D [01/Jun/2017:06:14:41 +0200] [Client 100] cupsdSendHeader: code=200, type="application/ipp", auth_type=0
D [01/Jun/2017:06:14:41 +0200] [Client 100] con->http=0x5599cb343270
D [01/Jun/2017:06:14:41 +0200] [Client 100] cupsdWriteClient error=0, used=0, state=HTTP_STATE_POST_SEND, data_encoding=HTTP_ENCODING_LENGTH, data_remaining=75, response=0x5599cb33e820(IPP_STATE_DATA), pipe_pid=0, file=-1
D [01/Jun/2017:06:14:41 +0200] [Client 100] Writing IPP response, ipp_state=IPP_STATE_DATA, old wused=0, new wused=0
D [01/Jun/2017:06:14:41 +0200] [Client 100] bytes=0, http_state=0, data_remaining=75
D [01/Jun/2017:06:14:41 +0200] [Client 100] Flushing write buffer.
D [01/Jun/2017:06:14:41 +0200] [Client 100] New state is HTTP_STATE_WAITING
D [01/Jun/2017:06:14:41 +0200] [Client 100] Waiting for request.
D [01/Jun/2017:06:14:41 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [01/Jun/2017:06:14:41 +0200] [Client 100] HTTP_STATE_WAITING Closing for error 32 (Broken pipe)
D [01/Jun/2017:06:14:41 +0200] [Client 100] Closing connection.
D [01/Jun/2017:06:14:41 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
I [01/Jun/2017:06:14:42 +0200] Expiring subscriptions...
root@alpha30:/var/log/cups#
bonne journée
A+
JB1