Hi all,
I’m trying to replicate functionality from a previous load balancer in HAProxy,
and the final sticking point seems to be the unique ID header. I found the
unique-id-header and unique-id-format commands, which are great, but what I
want to do is only add a unique-id-header if there is not already one present.
If there is one present, I do not want to add another one (which is what seems
to be happening by default).
I’ve tried adding a conditional:
acl unique_id_missing hdr_cnt(X-Unique-ID) eq 0
unique-id-format %{+X}o\ %ci-%cp-%rt-%pid-%Ts%fp
unique-id-header X-Unique-ID if unique_id_missing
But that does not seem to be working. Should it? If not, is there another way
to go about this?
Thanks!
Scott
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