13 Dec
2024
13 Dec
'24
11:11 a.m.
Hi Benoît
The is_direction function works by checking the From tag in the From
header and comparing it to the From tag in the Route header field.
Mid-dialog requests that are in the opposite direction (from that of
the original INVITE) have the To and From values swapped, so it's
possible to tell from the Route header fields whether the mid-dialog
request is from A to B or from B to A.
Anyway, getting the parameter, removing it, and then rebuilding the
Route header fields may work for you. I don't think I'd use that, but
it might work for you. You also need to be careful to not affect Route
values that other proxy servers might have added. I didn't consider
that in my first reply.
James
On Fri, 13 Dec 2024 at 15:32, Benoît Panizzon <benoit.panizzon(a)imp.ch> wrote:
Hi James
I ended up first using:
$var(rr) = $(hfl(Record-Route){tobody.uri}{uri.param,rr}); to get my rr
param I wanted to remove and then the s.rm function from textops.
And as I fear, there is no function to change 'one' header, I ended
doing:
remove_hf("Record-Route");
And then re-insert the 'corrected' header in a while loop.
Well thinking about it just now, RR header should be at the beginning
of he message, maybe I need to get $hflc and then do a reverse while
loop and use insert_hf instead of append_hf
By the way, the rr parameter for adding ftag to
the RR header fields
can later be used to see which direction (the is_direction() function)
the request is going in, so you may not even need to change the
Record-Route values if you use that.
I am logging is_direction to find out how it exactly behaves. I also
considered using this function but I am not yet sure i fully understand
what it does, especially within replies.
--
Mit freundlichen Grüssen
-Benoît Panizzon- @ HomeOffice und normal erreichbar
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