Hello, use msg_apply_changes() (from textopsx) before send_udp(). Cheers, Daniel On 13.04.20 18:02, Luis Rojas G. wrote: > Hello, > > I am using the dispatcher module, Kamailio version 5.3.3. The point > is, I am using send_udp() to forward the message, because I don't want > Kamailio to add headers Via nor Record-Route. I am just dispatching > the Invite message, and the rest of communication to be made just > between the endpoints, not through Kamailio. > > However,  I need to add before a custom header, using append_hf().  It > seems, send_udp() really changes nothing at all in the message, not > even something added by the script with append_hf(). It works if I use > forward(), but not if I use send_udp(). > > Is there a way to accomplish this? > > Best regards, > > -- > Luis Rojas > Software Architect > Sixbell > Los Leones 1200 > Providencia > Santiago, Chile > Phone: (+56-2) 22001288 > mailto:luis.rojas@sixbell.com > https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sixbel… > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users(a)lists.kamailio.org > https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.kam…