Hi,
I'm trying to remove all custom headers starting with X-, except a certain header, but Kamailio won't start due to an error. ERROR: <core> [route.c:1154]: fix_actions(): fixing failed (code=-1) at cfg:/etc/kamailio/kamailio.cfg:455
remove_hf_re("^(?!X-ThisHeaderShouldNotBeRemoved)X-.*") or remove_hf_re("^(?!X- ThisHeaderShouldNotBeRemoved)X-")
This is valid regex according to https://regex101.com/
Any idea's why this won't compile?
Regards,
Grant