hi,

I want to be able to identify requests by a unique id.

I'm able to do this in the location section:

proxy_set_header X-Request-Id
$pid-$msec-$remote_addr-$request_length;

but I want instead to set it to a variable, e.g. in the http section:

set $request_id $pid-$msec-$remote_addr-$request_length; ## does
this work?

add_header X-Request-Id $request_id; ## I don't see it in
the response headers

can it work?

TIA!

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