[exim-dev] [Bug 3094] New: :at_start: for headers_add in rou…

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Συντάκτης: Exim Bugzilla
Ημερομηνία:  
Προς: exim-dev
Αντικείμενο: [exim-dev] [Bug 3094] New: :at_start: for headers_add in routers & transports
https://bugs.exim.org/show_bug.cgi?id=3094

            Bug ID: 3094
           Summary: :at_start: for headers_add in routers & transports
           Product: Exim
           Version: 4.97
          Hardware: All
                OS: All
            Status: NEW
          Severity: wishlist
          Priority: medium
         Component: Delivery in general
          Assignee: unallocated@???
          Reporter: jgh146exb@???
                CC: exim-dev@???


Currently headers added by router or transport always go at the end of the
existing
headers (after any removals). It would be good to support the same flexibility
that
is supported by the ACL header manipulations.

Doing so will probably mean an additional pass over the headers; no longer
being able
to do removals in the send-to-wire path because we need to do removes before
adds
(so that a remove and add of the same header works as a replace). Would we
want to
take the efficiency hit for all configs, or do we accept a two-path
code-complexity
addition?

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