https://bugzilla.novell.com/show_bug.cgi?id=431571 Summary: move unique identifier off user agent in to private header Product: openSUSE 11.1 Version: Factory Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: libzypp AssignedTo: coolo@novell.com ReportedBy: poeml@novell.com QAContact: qa@suse.de CC: dmacvicar@novell.com Found By: --- I notice that there is a new user agent string in place with 11.1, which contains a unique identifier: X.X.X.X - - [02/Oct/2008:14:35:37 +0200] "GET /factory/repo/oss/suse/x86_64/groff-1.18.1.1-131.38.x86_64.rpm HTTP/1.1" 302 380 "-" "ZYpp 5.11.0 (curl 7.19.0) - 8fe829d4-893f-11dd-99c5-6989a659fc4a on ''" ftp.tu-chemnitz.de 256 702 EU:RO size:2040733 - I suggest to move this information into a private metadata header (X-Foobar) for the following reasons: 1) I consider the addition of the uuid misuse of the user agent field, which must not be used for non-essential information other than product identification, according to the HTTP/1.1 spec. 2) The variation introduced with this change is prohibitive for using a HTTP Vary header on the user agent by any involved server, mirror, or proxy cache -- otherwise all requested content becomes completely uncacheable. In addition, it would ruin the hit ratio and flood the cache with objects that should not be cached. 3) It complicates server-driven negotiation based on user agent. Please send this information in a separate header. For the logging it doesn't matter - we can log an arbitrary header just as well, together with the request. It might even be more practical because then the identifier is available separately without the need to split it from the user agent string. Across updates, the other part of the user agent string could changes, so the whole user agent string is less usable for tracking as far as I can see. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.