[SR-Users] default kamailio configuration

[Vitaliy Aleksandrov]

Hi All,

After reading default kamailio configuration i can't understand why does 
kamailio remove preloaded route headers from the incoming initial INVITE 
before calling record_route().

remove_hf("Route");
if  (is_method("INVITE|SUBSCRIBE"))
		record_route();

What will happen if an INVITE comes from another SIP proxy which wants 
to stay in the middle of the dialogue ?

For example, during Re-INVITE UA from our local site will construct 
in-dialog INVITE with R-URI taken from the remote contact and send it to 
our local proxy according to RR. Local proxy will process it in 
route[WITHNDLG] where loose_route() function will remove top most RR 
header because it points to us and since there is no more RR records 
forward the request to a destination from the R-URI.  As i understand in 
that case remote proxy will not receive any in-dialog requests from us.