[SR-Users] Bug in LDAP module?
Daniel-Constantin Mierla
miconda at gmail.com
Tue Dec 28 11:28:28 CET 2010
Hello,
looking in the sources, at least for 3.x, ldap module does not connect
to server from timer process, the one that executes failure route for
local timeout.
I will fix it.
Cheers,
Daniel
On 12/27/10 5:03 PM, Pan B. Christensen wrote:
> Hello,
> We are using kamailio 1.5 and we have the following problem with
> ldap_search:
> A call comes in. If it is to a VOIP user, it will be routed to
> kamailio, and eventually go to the ldap lookup route: route[10] to
> look up the user.
> This is always successful (LDAP can connect).
> It will then look up user preferences (call forwarding etc.) from SQL
> in route[12] and route based on this result in route[13].
> If the result is "CFU (call forward unconditional) = on", the URI is
> changed and route[10] (LDAP lookup) is called again.
> This is always successful (LDAP can connect).
> If the result is "CFB (call forward busy) = on" and the user is busy,
> the URI is changed and route[10] (LDAP lookup) is called again.
> This is also always successful (LDAP can connect).
> If the result is "CFNR (call forward no reply) = on", the timeout is
> changed and the call is delivered to the phone through route[14]
> (location) and route[15] (relay).
> If the user does not answer, the URI is changed in failure_route[1]
> and route[10] is called.
> For some unknown reason, ldap_search always fails in this scenario
> with the messages: "ldap_session not found", "couldn't get ldap
> session" and then "no LDAP entry found".
> Why?
> And why does this result in the -1 return code and not the -2 return
> code for ldap_search?
> The only differences I can think of is that the unsuccessful scenario
> comes from FAILURE_ROUTE instead of REQUEST_ROUTE, and that longer
> time has passed since the original invite.
> Here's a sample log:
> NOTE the three ERROR lines, the INFO line and the ROUTE 10 line.
> Dec 27 13:31:55 [3373]: INVITE received from sip:<CALLER>@<SBC_IP>
> <source IP: <SBC_IP>> to sip:<CALLEE>@<KAM_IP>:
> Dec 27 13:31:55 [3373]: ERROR:ldap:ldap_reconnect: [ldapprod]: LDAP
> reconnect successful
> Dec 27 13:31:55 [3373]: ROUTE 10: LDAP returned: UID = <UID>,
> voipSipPrimaryUri = <PRIMARY_URI>, voipExtensionUri =
> sip:<CALLEE>@<DOMAIN>
> Dec 27 13:31:55 [3373]: ROUTE 12: Effective user properties for UID
> <UID>: CFU: off <FORWARDTO>, CFB: off <FORWARDTO>, CFNR: on:25
> <FORWARDTO>, CFNC: off <FORWARDTO>, VM: <CALLEE>, busy_level: 1, DBrows: 1
> Dec 27 13:31:55 [3373]: -------------------- Calling
> sip:<CALLEE>@<DOMAIN> for 25 seconds. --------------------
> Dec 27 13:31:55 [3373]: ROUTE 15: Sending 105 INVITE from
> sip:<CALLER>@<SBC_IP> to sip:<CALLEE>@<CALLEE_IP> (via <<null>>)
> Dec 27 13:31:55 [3383]: Response 100 Trying to Cseq 102 INVITE
> received from <PROTO>:<CALLEE_IP>:<PORT>
> Dec 27 13:31:55 [3385]: Response 180 Ringing to Cseq 102 INVITE
> received from <PROTO>:<CALLEE_IP>:<PORT>
> Dec 27 13:32:20 [3388]: FAILURE_ROUTE 1: Timeout for: 104 INVITE from
> <CALLER> -> <CALLEE>
> Dec 27 13:32:20 [3388]: -------------------- Forwarding on no reply to
> <FORWARDTO> --------------------
> Dec 27 13:32:20 [3388]: ERROR:ldap:get_connected_ldap_session:
> [ldapprod]: ldap_session not found
> Dec 27 13:32:20 [3388]: ERROR:ldap:lds_search: [ldapprod]: couldn't
> get ldap session
> Dec 27 13:32:20 [3388]: INFO:ldap:ldap_search_impl: no LDAP entry found
> Dec 27 13:32:20 [3388]: ROUTE 11: Number lookup results for
> <FORWARDTO>: Node: VOIP.
> Dec 27 13:32:20 [3388]: CONFIG ERROR: VOIP number not found in LDAP.
> Hanging up.
> Dec 27 13:32:20 [3373]: Response 487 Request Cancelled to Cseq 102
> INVITE received from <PROTO>:<CALLEE_IP>:<PORT>
> Here's the ldap config file:
> [ldapprod]
> ldap_server_url = "ldap://ldap.<DOMAIN <ldap://ldap.%3CDOMAIN>>"
> ldap_network_timeout = 500
> ldap_client_bind_timeout = 500
> kamailio config snippets (in case you need them):
> # LDAP lookup for UID and primary URI
> route[10] {
> ...
> ldap_search("ldap://ldapprod/<DN>?uid,voipSipPrimaryUri,voipExtensionUri?one?(&(objectClass=voipAddress)(|(voipSipUri=sip:$rU at uio.no)(|(voipSipUri=$var(uri))(voipSipUri=$var(e164uri
> <ldap://ldapprod/%3CDN%3E?uid,voipSipPrimaryUri,voipExtensionUri?one?%28&%28objectClass=voipAddress%29%28%7C%28voipSipUri=sip:$rU@uio.no%29%28%7C%28voipSipUri=$var%28uri%29%29%28voipSipUri=$var%28e164uri>)))))");
> if ($retcode < 1) {
> switch ($retcode) {
> case -1:
> # no LDAP entry found
> route(11);
> return(1);
> case -2:
> # internal error
> sl_send_reply("500", "Internal server error");
> exit;
> }
> }
> ldap_result("uid/$avp(s:uid)");
> $avp(s:exten) = null;
> if (!ldap_result("voipExtensionUri/$avp(s:exten)")) {
> xlog("L_INFO", "voipExtensionUri not found.\n");
> }
> if (!ldap_result("voipSipPrimaryUri/$avp(s:p-uri)")) {
> xlog("L_WARN", "voipSipPrimaryUri not found.\n");
> #exit here?
> }
> if (isflagset(1)) {
> xlog("L_INFO", "ROUTE 10: LDAP returned: UID = $avp(s:uid),
> voipSipPrimaryUri = $avp(s:p-uri), voipExtensionUri = $avp(s:exten)\n");
> }
> if $avp(s:exten) != null {
> $ru=$avp(s:exten);
> } else {
> $ru=$avp(s:p-uri);
> }
> route(12);
> }
> }
> # Number lookup. Non-VoIP URI's go here.
> route[11] {
> ...
> }
> # Database lookup for call forwarding.
> route[12] {
> ...
> }
> # Call forwarding logic
> route[13] {
> if (is_method("INVITE")) {
> $avp(s:uio_timer_avp) = "300";
> if ($avp(s:cfu_status) == "on") {
> # Forward immediately
> xlog("L_INFO", "-------------------- $rU forwarded unconditionally
> to $avp(s:cfu_number). --------------------\n");
> $rU = $avp(s:cfu_number);
> route(10);
> }
> ...
> if ( $var(dlg_busy) >= $avp(s:busy_level) ) {
> if ($avp(s:cfb_status) == "on") {
> xlog("L_INFO", "-------------------- $rU has $var(dlg_busy)
> active calls. Treshold $avp(s:busy_level). Forwarding on busy to
> $avp(s:cfb_number) --------------------\n");
> $rU = $avp(s:cfb_number);
> route(10);
> }
> ...
> else if ($avp(s:cfnr_status) == "on") {
> # Forward to phone with timeout then to $avp(s:cfnr_number).
> # t_set_fr($avp(s:cfnr_timeout) + "000"); # Recommended method in
> 3.1. Function does not exist in 1.5. Using old method (avp).
> $avp(s:uio_timer_avp) = $avp(s:cfnr_timeout);
> xlog("L_INFO", "-------------------- Calling $ru for
> $avp(s:uio_timer_avp) seconds. --------------------\n");
> route(14);
> }
> ...
> }
> failure_route[1] {
> ...
> if $avp(s:cfnr_status) == "on" {
> if (isflagset(1)) {
> xlog("L_INFO", "FAILURE_ROUTE 1: Timeout for: $mi $rm from $fU ->
> $rU\n");
> }
> revert_uri();
> $rU = $avp(s:cfnr_number);
> xlog("L_INFO", "-------------------- Forwarding on no reply to $rU
> --------------------\n");
> route(10);
> }
> ...
> }
> With kind regards,
> Pan
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20101228/57a2a925/attachment-0001.htm>
More information about the sr-users
mailing list