Could any one help me on this kamailio issue, i am using kamailio as a proxy & router, PSTN route works fine, but have a problem with the ACK in response to 200OK which is not being forwarded by kamailio.
below the SIP flow at client side.
Messages Retrans Timeout Unexpected-Msg
INVITE ----------> 1 0
100 <---------- 1 0 0 0
183 <---------- 0 0 0 0
180 <---------- E-RTD1 1 0 0 0
200 <---------- E-RTD1 1 1 0 0
ACK ----------> 1 1
Pause [ 3000ms] 1 0
BYE ----------> 1 0 0
200 <---------- 0 0 0 1
after 200 OK, i have received 404 "Not here" from kamailio. Here is the cfg i have.. not sure how to solve this, since i am new to kamailio tool.
# Handle requests within SIP dialogs
route[WITHINDLG] {
if (!has_totag()) return;
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
route(DLGURI);
if (is_method("BYE")) {
setflag(FLT_ACC); # do accounting ...
setflag(FLT_ACCFAILED); # ... even if the transaction fails
} else if ( is_method("ACK") ) {
# ACK is forwarded statelessly
route(NATMANAGE);
} else if ( is_method("NOTIFY") ) {
# Add Record-Route for in-dialog NOTIFY as per RFC 6665.
record_route();
}
route(RELAY);
exit;
}
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
# no loose-route, but stateful ACK;
# must be an ACK after a 487
# or e.g. 404 from upstream server
route(RELAY);
exit;
} else {
# ACK without matching transaction ... ignore and discard
exit;
}
}
sl_send_reply("404","Not here");
exit;
}
Please help.. thanks in advance.
Solved it by adding below//