30 Nov
2011
30 Nov
'11
4:36 p.m.
Hi
I am using dialog module in Kamailio 3.1.5, and find that the dialog
table entry does not get deleted after call if in-dialog requests (e.g.
session timer refresh re-INVITEs in my case) are challenged. The entry
will stay there and get deleted after a long time (some time out? I
didn't set any dialog timeouts myself). If I remove the challenge for
in-dialog requests, then the dialog entry is deleted right after the call.
I use the example config script with a bit of modification for my
in-dialog route:
route[WITHINDLG] {
xlog("L_DBG","WITHINDLG: method=$rm, callid=$ci, cseq=$cs\n");
if (has_totag() ) {
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
# Filter out bad/faked up in-dialog requests.
if ( !is_known_dlg() )
{
xlog("L_WARN","WITHINDLG: NOT known dlg!! method=$rm,
callid=$ci, cseq=$cs, $fu->$tu\n");
exit;
}
if (is_method("BYE")) {
xlog("L_DBG","WITHINDLG: BYE found within Dialog \n");
setflag(FLT_ACC); # do accounting ...
setflag(FLT_ACCFAILED); # ... even if the transaction fails
}
##########################################################
# challenge: if not CANCEL/ACK
else if ( !is_method("CANCEL") && !is_method("ACK") )
{
route(AUTH);
}
##########################################################
xlog("L_DBG","WITHINDLG: Entering RELAY route from WITHINDLG
route. \n");
route(RELAY);
} else {
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
xlog("L_DBG","WITHINDLG: ACK callid=$ci, cseq=$cs\n");
if ( t_check_trans() ) {
# no loose-route, but stateful ACK;
# must be an ACK after a 487
# or e.g. 404 from upstream server
xlog("L_DBG","ACK being relayed\n");
t_relay();
exit;
} else {
# ACK without matching transaction ... ignore and discard
xlog("L_DBG","ACK without matching transaction-ignore and
discard\n");
exit;
}
}
sl_send_reply("404","Not here");
}
exit;
}
}
The part that calls route(AUTH) that I added was the cause for the
dialog entry not being deleted after call.
Here are my dialog related settings:
modparam("dialog", "enable_stats", 1)
modparam("dialog", "dlg_flag", 4)
modparam("dialog", "db_url", DBURL)
modparam("dialog", "db_update_period", 20) # use short one to catch
short dlgs (default:60)
modparam("dialog", "db_mode", 1)
# don't use did, so to cope with clients that don't preserve parameters
# and mode 1 (fallback to 3261 matching) didn't work??
modparam("dialog", "dlg_match_mode", 2)
modparam("dialog", "profiles_no_value", "inbound ;
outbound")
modparam("dialog", "dlg_extra_hdrs", "Hint: dialog
expired\r\n")
# default timeout set to max int 0x07FFFF FFFF
modparam("dialog", "default_timeout", 2147483647)
And I set the dialog flag (4) when receiving the initial INVITE.
Any idea why? Am I using the dialog module correctly?
Thanks very much!
Yufei
--
Yufei Tao
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