[OpenSER-Users] Why $rP is not writeable?

Hi, sometimes I need to forward a message to a SIP UAS that just speaks UDP (for example a PSTN gateway), so if I recevie an INVITE from a TCP client I must use: t_relay("udp:gateway:5060") since the following would fail: $rd = "gateway"; t_relay(); The problem is that this second approach is more flexible and it can be used in block routes, being them independent fo the final destination (set prevously with asignements like "$rd = gateway"). A solution for this could be allow $rP: $rP - reference to transport protocol of R-URI so I could do: $rP = "UDP"; $rd = "gateway"; t_relay(); But unfortunatelly $rP is no writeable: http://www.openser.org/dokuwiki/doku.php/core-cookbook:1.3.x#assignment Another solution could be if "force_send_socket" function would allow setting **just** the protocol type, but it doesn't allow it. So there is no solution excepting making dirty the script and setting all the destination (protocol:ip:port) using "t_relay(protocol:ip:port)". Why $rP is no writeable? Thanks. -- Iñaki Baz Castillo ibc(a)in.ilimit.es