sr-dev August 2013

sr-dev@lists.kamailio.org

29 participants
148 discussions

Outbound flow failure handling merged to master
by Hugh Waite 23 Nov '16

23 Nov '16

Hello, As you will see I have merged my branch back into master. These changes add a new event route [tm:branch-failure] to the tm module which is run when any failure response is received on a transaction. The event_route uses a new route type BRANCH_ROUTE which limits the functions that can be run in the route. The functions t_check_status(), t_next_contact_flow(), t_relay() and unregister() can be used in this route. A new pv $T_reply_ruid is accessible in this route which can be used to unregister a single contact entry. The following example route can be used on a registrar to handle failed or invalid flows: event_route[tm:branch-failure] { xlog("L_INFO", "event_route[tm:branch-failure]\n"); if (t_check_status("430|403")) { if (!unregister("location", "$tu", "$T_reply_ruid")) { xlog("L_WARN", "failed to unregister $tu with ruid $T_reply_ruid\n"); } if (!t_next_contact_flow()) { xlog("L_INFO", "No more flows\n"); } else { xlog("L_INFO", "Next flow\n"); t_relay(); } } } Any bugs, memory leaks etc. let me know! Hugh -- Hugh Waite Principal Design Engineer Crocodile RCS Ltd.

4 11

Using t_suspend()/t_continue() multiple times on the same transaction
by Peter Dunkley 02 Jul '14

02 Jul '14

Hi, I am trying to use t_suspend()/t_continue() multiple times on the same transaction. Calling t_suspend() more than once works, but the second time I call t_continue() the transaction is killed and a 500 response is sent. It is the "if (branch == t->nr_of_outgoings)" check from the code fragment below (from t_suspend.c:t_continue()) that results in the transaction being killed - you can see the debug/error line I added to determine this in the fragment. Is using t_suspend()/t_continue() multiple times something that should work? Thanks, Peter if (t->uas.status < 200) { /* No final reply has been sent yet. * Check whether or not there is any pending branch. */ for ( branch = 0; branch < t->nr_of_outgoings; branch++ ) { if ((t->uac[branch].request.buffer != NULL) && (t->uac[branch].last_received < 200) ) break; } if (branch == t->nr_of_outgoings) { /* There is not any open branch so there is * no chance that a final response will be received. */ ret = 0; LM_ERR("branch == t->nr_of_outgoings\n"); goto kill_trans; } } -- Peter Dunkley Technical Director Crocodile RCS Ltd

5 12

default config: do loose_route() for in-dialog NOTIFY as per new RFC 6665
by Iñaki Baz Castillo 19 Feb '14

19 Feb '14

Hi, the new RFC 6665 mandates that the subscription dialog is made *after* the first NOTIFY from the UAS (rather than after the 200 to the initial SUBSCRIBE). This means that the UAC MUST take the route set from the *first* received NOTIFY (instead of taking it from the 200 to the initial SUBSCRIBE). Therefore a proxy compliant with RFC 6665 MUST always add RR to in-dialog NOTIFY requests and thus, I propose that the default SR script file implements it. Regards. -- Iñaki Baz Castillo <ibc(a)aliax.net>

5 21

Slightly wacky suggestion...
by Peter Dunkley 04 Dec '13

04 Dec '13

Hello, There was some talk about restructuring the Kamailio code (for example, putting the core into an "src/" or "core/" directory and having an "include/" directory). Would there be any mileage in considering a move to GitHub for the repository at the same time? Regards, Peter -- Peter Dunkley Technical Director Crocodile RCS Ltd

11 22

TM changes to support extended async usage
by Jason Penton 26 Sep '13

26 Sep '13

Hi guys..... more specifically, TM experts ;) I have just committed a tmp branch called tm_async_extensions. We noticed with the current async impl, it is not possible to do things like forward() and t_relay() in a continued async route block. This is mainly because the faked env. created is specifically triggered to be a failure route in the continuation code. We have changed this to execute the route block using the original block type when the transaction was suspended (eg REQUEST_ROUTE, ON_REPLY, etc). We have also tested using reply blocks (ie suspending replies) but that code will come later once everyone is happy that we include the current subset of changes to improve normal async REQUEST processing. The current changes require some changes to the main TM structure (mainly for 'backing up' state before suspending). There is also a new mutex used to prevent multiple concurrent invocations of t_continue (previously we were using the reply lock). It would be great if some TM experts could review the code to ensure there are no use cases that we have missed that could break things. Daniel I suspect you know TM and its impacts the best, or is there someone else we should include? So far for our use cases, these changes work great. We can do things like: route[INVITE] { t_newtran(); async_route("INVITERESUME", "10"); #resume transaction in 10 seconds running route block INVITERESUME exit; } route[INVITERESUME] { t_relay(); } All upstream reply processing is correctly handled, local ACK generation and processing works as expected, etc. The above example may seem absurd (why would we want to delay our proxy of an INVITE for 10 seconds????) - Well this is just an easy example we use in our test cases. Actually we are using the async processing in the IMS code to increase performance when an INVITE for example triggers a long running process (like a DIAMETER request to get a users profile for example). Using conventional methods (no async transactions), the SIP worker process will sit locked up for this time (maybe 100's of milliseconds) unnecessarily. We found that using t_suspend and t_continue internally in our code improves performance significantly. I can see many use cases for the async code to improve performance, especially cases where we use backend DB's, memcached, radius, diameter, etc before actually "doing SIP routing"..... Any feedback would be greatly appreciated. Cheers Jason

2 4

Crash bug freeing To headers
by Alex Balashov 19 Sep '13

19 Sep '13

(Sorry for the long post. Unfortunately, not all bugs are simple.) I've got a crash bug that occurs when freeing To header parameters when freeing a SIP message. It only occurs in certain circumstances. I can reproduce the circumstances on my side consistently, but I suspect it would be difficult for someone else to reproduce them independently. Those circumstances are: 1. A Kamailio registrar routes an inbound call from the PSTN to a user using a Snom One PBX using serial forking across two different bindings (two different AOR domains) that come from two different registrars (going into the same database). 2. The PBX sends back a 480 Temporarily Unavailable message to Kamailio in response to every INVITE, on all branches, all the time. 3. It takes several attempts (usually 5-10) of calling that PBX to get to Kamailio crash. 4. It only happens when the initial INVITE is processed using a particular sequence of routes in the route script. There is nothing unusual about the routes themselves, and I've eliminated all the side effects and dependencies I can. It just doesn't happen when I have the call zig through those routes as opposed to those routes. That suggests package memory corruption that is tripped over by a particular conjuncture of circumstances. Here is the 480 Temporarily Unavailable message sent by the PBX. IPs and numbers have been redacted for customer privacy, but the string lengths are the same: Here's the INVITE we're sending to the PBX: INVITE sip:16504578199@184.178.234.121:5060;transport=udp;line=eccbc87e SIP/2.0 Record-Route: <sip:55.177.31.199;lr=on;ftag=c00080a-13c4-521c7390-2e862c51-6c96b554;vsf=AAAAAB0GDg4NDQUCBwd3A3AKHgEaFwUbCBsIHjEwOjUwNjA7aXN1cC1vbGk9MA--;dlgcor=5af.3bb> From: <sip:6784841111@192.13.219.87>;tag=c00080a-13c4-521c7390-2e862c51-6c96b554 To: <sip:16504578199@55.177.31.199:5060> Call-ID: CXC-72-6a0635d8-c00080a-13c4-521c7390-2e862c51-7eeb3166(a)192.13.219.87 CSeq: 1 INVITE Via: SIP/2.0/UDP 55.177.31.199;branch=z9hG4bKcdfc.af721dd5.1 Via: SIP/2.0/UDP 192.13.219.87:5060;branch=z9hG4bK-3290-521c7390-2e862c51-3a62fcfd Max-Forwards: 32 Content-Disposition: session;handling=required Contact: <sip:+16784841111@192.13.219.87:5060;isup-oli=0;maddr=192.13.219.87;transport=udp> Content-Type: application/sdp Content-Length: 274 Privacy: off P-Asserted-Identity: "Unavailable" <sip:+16784841111@192.13.219.87> v=0 o=Acme_UAS 0 1 IN IP4 175.154.21.89 s=SIP Media Capabilities c=IN IP4 12.131.2.144 t=0 0 m=audio 6698 RTP/AVP 0 18 101 a=rtpmap:0 PCMU/8000 a=rtpmap:18 G729/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:18 annexb=no a=fmtp:101 0-15 a=maxptime:30 a=sendrecv And here's the 480 Temporarily Unavailable we get back every time we do, on both branches. Nothing about it looks unusual to me: SIP/2.0 480 Temporarily Unavailable Via: SIP/2.0/UDP 55.177.31.199;branch=z9hG4bKcdfc.af721dd5.0 Via: SIP/2.0/UDP 192.13.219.87:5060;branch=z9hG4bK-3290-521c7390-2e862c51-3a62fcfd Record-Route: <sip:55.177.31.199;lr=on;ftag=c00080a-13c4-521c7390-2e862c51-6c96b554;vsf=AAAAAB0GDg4NDQUCBwd3A3AKHgEaFwUbCBsIHjEwOjUwNjA7aXN1cC1vbGk9MA--;dlgcor=5af.3bb> From: <sip:6784841111@192.13.219.87>;tag=c00080a-13c4-521c7390-2e862c51-6c96b554 To: <sip:16504578199@55.177.31.199:5060>;tag=d3516ef5fa Call-ID: CXC-72-6a0635d8-c00080a-13c4-521c7390-2e862c51-7eeb3166(a)192.13.219.87 CSeq: 1 INVITE Contact: <sip:5282797646@195.105.225.111:5060;transport=udp> Supported: 100rel, replaces, norefersub Allow-Events: refer Allow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE Accept: application/sdp User-Agent: snomONE/4.5.1.1107 Zeta Perseids Content-Length: 0 But when this happens a few times, Kamailio crashes: 05:38:24.317781 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 592 E..l..@.4.2....yA.,......X..SIP/2.0 100 Trying -- 05:38:24.333573 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i.$SIP/2.0 480 Temporarily Unavailable -- 05:38:24.333767 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@..<A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:24.335593 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1187 E.......@..3A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:24.385873 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i.$SIP/2.0 480 Temporarily Unavailable -- 05:38:24.386126 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@..:A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:24.831672 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1187 E.......@..1A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:24.877627 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i.$SIP/2.0 480 Temporarily Unavailable -- 05:38:24.877933 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@..8A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:25.831617 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1187 E.......@../A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:25.881560 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i.$SIP/2.0 480 Temporarily Unavailable -- 05:38:25.881731 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@..6A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:32.219484 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1183 E.......@..1A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:32.270568 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 588 E..h..@.4.2....yA.,......T..SIP/2.0 100 Trying -- 05:38:32.289120 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 861 E..y..@.4.1....yA.,......e.7SIP/2.0 480 Temporarily Unavailable -- 05:38:32.289284 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.......@..7A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:32.291180 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1183 E.......@../A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:32.340763 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 861 E..y..@.4.1....yA.,......e.7SIP/2.0 480 Temporarily Unavailable -- 05:38:32.340986 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.......@..5A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:32.769133 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1183 E.......@..-A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:32.814851 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 861 E..y..@.4.1....yA.,......e.7SIP/2.0 480 Temporarily Unavailable -- 05:38:32.814993 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.... ..@..3A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:33.769113 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1183 E.... -- 05:38:33.815374 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 861 E..y..@.4.1....yA.,......e.7SIP/2.0 480 Temporarily Unavailable -- 05:38:33.815600 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.......@..1A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:42.371141 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@..$A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:42.422190 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 592 E..l..@.4.2....yA.,......X.jSIP/2.0 100 Trying -- 05:38:42.438849 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......iE SIP/2.0 480 Temporarily Unavailable -- 05:38:42.439005 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 410 ..@..-A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:42.440373 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@.."A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:42.490261 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......iE SIP/2.0 480 Temporarily Unavailable -- 05:38:42.490348 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 410 E.......@..+A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:42.894122 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@.. A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:42.940323 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......iE SIP/2.0 480 Temporarily Unavailable -- 05:38:42.940562 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 410 E.......@..)A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:43.894116 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:43.940482 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......iE SIP/2.0 480 Temporarily Unavailable -- 05:38:43.940604 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 410 E.......@..'A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:50.261551 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:50.313509 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 592 E..l..@.4.2....yA.,......X..SIP/2.0 100 Trying -- 05:38:50.329411 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i..SIP/2.0 480 Temporarily Unavailable -- 05:38:50.329584 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@..$A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:50.331250 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:50.379415 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i..SIP/2.0 480 Temporarily Unavailable -- 05:38:50.379584 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@.."A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:50.769124 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:50.817797 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i..SIP/2.0 480 Temporarily Unavailable -- 05:38:50.817936 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@.. A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:38:51.769119 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1188 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:38:51.815689 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 865 E..}..@.4.1....yA.,......i..SIP/2.0 480 Temporarily Unavailable -- 05:38:51.815844 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 411 E.......@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:00.197890 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1182 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:00.248713 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 586 E..f..@.4.2....yA.,......RD_SIP/2.0 100 Trying -- 05:39:00.264983 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 859 E..w..@.4.1....yA.,......c-.SIP/2.0 480 Temporarily Unavailable -- 05:39:00.265140 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.......@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:00.266675 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1182 E.......@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:00.317151 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 859 E..w..@.4.1....yA.,......c-.SIP/2.0 480 Temporarily Unavailable -- 05:39:00.317285 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E.......@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:00.706627 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1182 E.... ..@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:00.752906 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 859 E..w..@.4.1....yA.,......c-.SIP/2.0 480 Temporarily Unavailable -- 05:39:00.753054 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E....!..@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:01.706639 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1182 E...."..@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:01.753036 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 859 E..w..@.4.1....yA.,......c-.SIP/2.0 480 Temporarily Unavailable -- 05:39:01.753198 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 408 E....#..@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:08.088801 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1190 E....$..@.. -- 05:39:08.139841 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 594 E..n..@.4.2....yA.,......ZhVSIP/2.0 100 Trying -- 05:39:08.156036 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 867 E.....@.4.1....yA.,......k4.SIP/2.0 480 Temporarily Unavailable -- 05:39:08.156222 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 412 E....%..@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:08.157697 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1190 E....&..@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:08.208158 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 867 E.....@.4.1....yA.,......k4.SIP/2.0 480 Temporarily Unavailable -- 05:39:08.208282 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 412 E....'..@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:08.644104 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1190 E....(..@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:08.690068 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 867 E.....@.4.1....yA.,......k4.SIP/2.0 480 Temporarily Unavailable -- 05:39:08.690212 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 412 E....)..@...A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 -- 05:39:09.644112 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 1190 E....*..@...A.,....y........INVITE sip:16504578199@195.105.225.111:5060;transport=udp;line=eccbc87e SIP/2.0 -- 05:39:09.690201 IP 195.105.225.111.5060 > 55.177.31.199.5060: SIP, length: 867 E.....@.4.1....yA.,......k4.SIP/2.0 480 Temporarily Unavailable -- 05:39:09.690374 IP 55.177.31.199.5060 > 195.105.225.111.5060: SIP, length: 412 A.,....y........ACK sip:16504578199@195.105.225.111:5060;transport=udp;line=c81e728d SIP/2.0 Anyway, my core dumps were showing me qm_*() free errors. To get at the problem, I disabled loop unrolling, removed -09 and added the GDB debug flags (-ggdb*) to the compile flags. When I do that, I get one of these two call stacks--mostly the first, and occasionally the second: #0 0x000000000055dc2e in free_to_params (tb=0x7fcb38f5f750) at parser/parse_to.c:827 #1 0x000000000055dc75 in free_to (tb=0x7fcb38f5f750) at parser/parse_to.c:836 #2 0x000000000053d9df in clean_hdr_field (hf=0x7fcb38f5fb50) at parser/hf.c:169 #3 0x000000000053db49 in free_hdr_field_lst (hf=0x7fcb38f590e0) at parser/hf.c:223 #4 0x0000000000542330 in free_sip_msg (msg=0x7fcb38f5edf0) at parser/msg_parser.c:729 #5 0x000000000049d9cb in receive_msg ( buf=0x905580 "SIP/2.0 480 Temporarily Unavailable\r\nVia: SIP/2.0/UDP 55.177.31.199;branch=z9hG4bK818c.b6308b63.0\r\nVia: SIP/2.0/UDP 192.13.219.87:5060;branch=z9hG4bK-28db-521c65ea-2e50da5e- 8f9ae0d\r\nRecord-Route: <sip"..., len=864, rcv_info=0x7fff2bcad950) at receive.c:294 #6 0x000000000052f5cd in udp_rcv_loop () at udp_server.c:557 #7 0x0000000000467de2 in main_loop () at main.c:1638 #8 0x000000000046ad8b in main (argc=13, argv=0x7fff2bcadc88) at main.c:2566 ---- #0 0x00000000005394e9 in qm_detach_free (qm=0x7f25c3037010, frag=0x7f25c3256af0) at mem/q_malloc.c:266 #1 0x0000000000539744 in qm_malloc (qm=0x7f25c3037010, size=960) at mem/q_malloc.c:386 #2 0x00000000004bba49 in rval_new_empty (extra_size=102) at rvalue.c:236 #3 0x00000000004bbabb in rval_new_str (s=0x7fffbad95460, extra_size=80) at rvalue.c:260 #4 0x00000000004be1b3 in rval_convert (h=0x7fffbad972a0, msg=0x7f25c2587920, type=RV_STR, v=0x7f25c3182ee8, c=0x7fffbad95620) at rvalue.c:1321 #5 0x00000000004bf657 in rval_str_lop2 (h=0x7fffbad972a0, msg=0x7f25c2587920, res=0x7fffbad95ac8, op=RVE_EQ_OP, l=0x7f25c3182ee8, c1=0x7fffbad95620, r=0x7f25c3183668, c2=0x0) at rvalue.c:1752 #6 0x00000000004c028d in rval_expr_eval_int (h=0x7fffbad972a0, msg=0x7f25c2587920, res=0x7fffbad95ac8, rve=0x7f25c3183d40) at rvalue.c:2058 #7 0x0000000000418d5a in do_action (h=0x7fffbad972a0, a=0x7f25c3185190, msg=0x7f25c2587920) at action.c:1050 #8 0x0000000000421aa7 in run_actions (h=0x7fffbad972a0, a=0x7f25c3182d40, msg=0x7f25c2587920) at action.c:1573 #9 0x000000000042047f in do_action (h=0x7fffbad972a0, a=0x7f25c3185530, msg=0x7f25c2587920) at action.c:1374 #10 0x0000000000421aa7 in run_actions (h=0x7fffbad972a0, a=0x7f25c317a2a0, msg=0x7f25c2587920) at action.c:1573 #11 0x0000000000418fa2 in do_action (h=0x7fffbad972a0, a=0x7f25c318ac10, msg=0x7f25c2587920) at action.c:1065 #12 0x0000000000421aa7 in run_actions (h=0x7fffbad972a0, a=0x7f25c318ac10, ---Type <return> to continue, or q <return> to quit--- msg=0x7f25c2587920) at action.c:1573 #13 0x0000000000418ffb in do_action (h=0x7fffbad972a0, a=0x7f25c318ad10, msg=0x7f25c2587920) at action.c:1069 #14 0x0000000000421aa7 in run_actions (h=0x7fffbad972a0, a=0x7f25c3163930, msg=0x7f25c2587920) at action.c:1573 #15 0x0000000000416f3a in do_action (h=0x7fffbad972a0, a=0x7f25c3194fc0, msg=0x7f25c2587920) at action.c:690 #16 0x0000000000421aa7 in run_actions (h=0x7fffbad972a0, a=0x7f25c318eaf0, msg=0x7f25c2587920) at action.c:1573 #17 0x0000000000422231 in run_top_route (a=0x7f25c318eaf0, msg=0x7f25c2587920, c=0x0) at action.c:1658 #18 0x00007f25c233b220 in run_failure_handlers (t=0x7f24be53b2a0, rpl=0x7f25c32554b0, code=480, extra_flags=64) at t_reply.c:1024 #19 0x00007f25c233c39b in t_should_relay_response (Trans=0x7f24be53b2a0, new_code=480, branch=0, should_store=0x7fffbad97580, should_relay=0x7fffbad97584, cancel_data=0x7fffbad97790, reply=0x7f25c32554b0) at t_reply.c:1300 #20 0x00007f25c233dec4 in relay_reply (t=0x7f24be53b2a0, p_msg=0x7f25c32554b0, branch=0, msg_status=480, cancel_data=0x7fffbad97790, do_put_on_wait=1) at t_reply.c:1703 #21 0x00007f25c2340f46 in reply_received (p_msg=0x7f25c32554b0) at t_reply.c:2370 #22 0x0000000000458861 in do_forward_reply (msg=0x7f25c32554b0, mode=0) at forward.c:799 #23 0x00000000004590d0 in forward_reply (msg=0x7f25c32554b0) at forward.c:882 #24 0x000000000049d8a4 in receive_msg ( ---Type <return> to continue, or q <return> to quit--- buf=0x905580 "SIP/2.0 480 Temporarily Unavailable\r\nVia: SIP/2.0/UDP 55.177.31.199;branch=z9hG4bK0c.2611fa52.0\r\nVia: SIP/2.0/UDP 192.13.219.87:5060;branch=z9hG4bK-293c-521c669b-2e538ce5- 7bec16be\r\nRecord-Route: <sip:"..., len=863, rcv_info=0x7fffbad97af0) at receive.c:270 #25 0x000000000052f5cd in udp_rcv_loop () at udp_server.c:557 #26 0x0000000000467de2 in main_loop () at main.c:1638 #27 0x000000000046ad8b in main (argc=13, argv=0x7fffbad97e28) at main.c:2566 But, 90% of the time, it's the first one. The second one shows up only occasionally. Sometimes, this variant appears: #0 0x0000000000538d7a in qm_insert_free (qm=0x7f069c7a6010, frag=0x7f069c9c57e0) at mem/q_malloc.c:182 #1 0x0000000000539c3d in qm_free (qm=0x7f069c7a6010, p=0x7f069c9c57f0) at mem/q_malloc.c:527 #2 0x000000000055dc4c in free_to_params (tb=0x7f069c9c73a0) at parser/parse_to.c:828 #3 0x000000000055dc75 in free_to (tb=0x7f069c9c73a0) at parser/parse_to.c:836 #4 0x000000000053d8d5 in clean_hdr_field (hf=0x7f069c7d7da0) at parser/hf.c:113 #5 0x000000000053db49 in free_hdr_field_lst (hf=0x7f069c7d6340) at parser/hf.c:223 #6 0x0000000000542330 in free_sip_msg (msg=0x7f069c9c44b0) at parser/msg_parser.c:729 #7 0x000000000049d9cb in receive_msg ( buf=0x905580 "SIP/2.0 480 Temporarily Unavailable\r\nVia: SIP/2.0/UDP 55.177.31.199;branch=z9hG4bKeb96.24a5718.0\r\nVia: SIP/2.0/UDP 208.94.157.10:5060;branch=z9hG4bK-368a-521c67f1-3b3bc7c- 5366754e\r\nRecord-Route: <sip:55.177.31.199;lr=on;ftag=c00070a-13c4- 521c67f1-3b3bc7c- 3af08849;vsf=AAAAAB0GDg4NDQUCBwd3A3AKHgEaFwUbBhsGHjEwOjUwNjA7aXN1cC1vbGk 9MA--;dlgcor=789.3d01>\r\nFrom: <sip:6784841111@208.94.157.10>;tag=c00070a-13c4-521c67f1-3b3bc7c- 3af08849\r\nTo: <sip:16504578199@55.177.31.199:5060>;tag=3af8238437\r\nCall-ID: CXC-408- 6bb35b50-c00070a-13c4-521c67f1-3b3bc7c-3c339c13(a)208.94.157.10\r\nCSeq: 1 INVITE\r\nContact: <sip:5282797646@195.105.225.111:5060;transport=udp>\r\nSupported: 100rel, replaces, norefersub\r\nAllow-Events: refer\r\nAllow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE\r\nAccept: application/sdp\r\nUser-Agent: snomONE/4.5.1.1107 Zeta Perseids\r\nContent-Length: 0\r\n\r\n", len=862, rcv_info=0x7fff87c23070) So, I focused on the first one. The crash is on pkg_free() in this loop in parser/parse_to.c: void free_to_params(struct to_body* const tb) { struct to_param *tp=tb->param_lst; struct to_param *foo; while (tp){ foo = tp->next; pkg_free(tp); tp=foo; } } Removing the pkg_free() definitely eliminates the crash. Or, at least, I haven't been able to get the proxy to crash in that scenario. In poking at the values of the to_body, (gdb) frame 2 #2 0x000000000055dc4c in free_to_params (tb=0x7f069c9c73a0) at parser/parse_to.c:828 828 pkg_free(tp); (gdb) print tb $30 = (struct to_body * const) 0x7f069c9c73a0 (gdb) print tb->uri->s $31 = 0x9056e6 "sip:6784841111@208.94.157.10>;tag=c00070a-13c4-521c67f1- 3b3bc7c-3af08849\r\nTo: <sip:16504578199@55.177.31.199:5060>;tag=3af8238437\r\nCall-ID: CXC-408- 6bb35b50-c00070a-13c4-521c67f1-3b3bc7c-3c339c13(a)208.94.157.10\r\nCSeq: 1 INVITE\r\nContact: <sip:5282797646@195.105.225.111:5060;transport=udp>\r\nSupported: 100rel, replaces, norefersub\r\nAllow-Events: refer\r\nAllow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE\r\nAccept: application/sdp\r\nUser-Agent: snomONE/4.5.1.1107 Zeta Perseids\r\nContent-Length: 0\r\n\r\n" (gdb) print tb->param_lst $32 = (struct to_param *) 0x7f069c9c57f0 (gdb) print tb->param_lst->next $33 = (struct to_param *) 0x0 (gdb) print tb->param_lst->value $34 = { s = 0x905708 "c00070a-13c4-521c67f1-3b3bc7c-3af08849\r\nTo: <sip:16504578199@55.177.31.199:5060>;tag=3af8238437\r\nCall-ID: CXC-408- 6bb35b50-c00070a-13c4-521c67f1-3b3bc7c-3c339c13(a)208.94.157.10\r\nCSeq: 1 INVITE\r\nContact: <sip:5282797646@195.105.225.111:5060;transport=udp>\r\nSupported: 100rel, replaces, norefersub\r\nAllow-Events: refer\r\nAllow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE\r\nAccept: application/sdp\r\nUser-Agent: snomONE/4.5.1.1107 Zeta Perseids\r\nContent-Length: 0\r\n\r\n", len = 38} (gdb) print tb->param_lst->name $35 = {s = 0x3e653834323335 <Address 0x3e653834323335 out of bounds>, len = 3} I eventually noticed that I can't seem to get at the 'name' value in the first (and only) parameter list node: (gdb) print tb->param_lst->name $35 = {s = 0x3e653834323335 <Address 0x3e653834323335 out of bounds>, len = 3} I guess that should be 'tag', right? It's the only parameter, unsurprisingly: (gdb) print tb->param_lst->next $33 = (struct to_param *) 0x0 Anyway, I can also say that accessing the pointer into the message buffer to which it corresponds crashes it, but only for that 480 -- not for any other SIP message that comes through the proxy: while (tp){ foo = tp->next; LM_ERR("Freeing up the hinterland: <%s>\n", tp->name.s); pkg_free(tp); tp=foo; } (gdb) where #0 0x0000003dbae480ac in vfprintf () from /lib64/libc.so.6 #1 0x0000003dbaee4fe0 in __vsyslog_chk () from /lib64/libc.so.6 #2 0x0000003dbaee5210 in syslog () from /lib64/libc.so.6 #3 0x000000000055dd47 in free_to_params (tb=0x7fc1def09610) So, I really get the sense that there's something wrong with that 480 that's corrupting memory. Is that an accurate conclusion? If so, what it could be, and what's the next step to try to diagnose further? Thank you! -- Alex -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/

2 42

json and jsonrpc-c modules
by Matthew Williams 02 Sep '13

02 Sep '13

Hi, The Flowroute development team is pleased to announce a complete overhaul of the json and jsonrpc-c modules, originally authored two years ago. Credit should first and foremost go to Joe Hillenbrand who did most of the new development. Jordan Levy (our CTO) and I were also involved in the updates and QA to a lesser extent. The updated modules are available in the mgw/json branch. In addition to the Kamailio modules, we have developed a Twisted Python library to complement the jsonrpc-c module: https://github.com/flowroute/txjason We would be interested in any critiques of the API, documentation, and code. Please let us know if you use these modules and especially if you find any bugs. We hope to merge this into master once we have had it in production for awhile and (ideally) have received some feedback from other users. Feel free to contact either Joe (joe(a)flowroute.com) or me directly with any questions or comments. -- Matthew Williams Flowroute LLC http://www.flowroute.com/

2 1

[tracker] Comment added: UAC outgoing registration stability
by sip-router 31 Aug '13

31 Aug '13

THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY. The following task has a new comment added: FS#107 - UAC outgoing registration stability User who did this - Danny Froberg (dfroberg) ---------- 4. Cseq not incremented so re-registrations 401's if checked on the peer side. ---------- More information can be found at the following URL: http://sip-router.org/tracker/index.php?do=details&task_id=107#comment1063 You are receiving this message because you have requested it from the Flyspray bugtracking system. If you did not expect this message or don't want to receive mails in future, you can change your notification settings at the URL shown above.

1 0

git:master: parser/fline.c: syslog message cleanup when request line parsing fails
by Juha Heinanen 29 Aug '13

29 Aug '13

Module: sip-router Branch: master Commit: 2685cd9bb6933c2d4b4b97e3b4ed6b98005255c9 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=2685cd9… Author: Juha Heinanen <jh(a)tutpro.com> Committer: Juha Heinanen <jh(a)tutpro.com> Date: Thu Aug 29 17:05:41 2013 +0300 parser/fline.c: syslog message cleanup when request line parsing fails --- parser/parse_fline.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/parser/parse_fline.c b/parser/parse_fline.c index 25ab944..54da8c5 100644 --- a/parser/parse_fline.c +++ b/parser/parse_fline.c @@ -225,21 +225,21 @@ char* parse_first_line(char* buffer, unsigned int len, struct msg_start * fl) return nl; error: - LOG(L_INFO, "ERROR:parse_first_line: bad %s first line\n", + LOG(L_DBG, "parse_first_line: bad %s first line\n", (fl->type==SIP_REPLY)?"reply(status)":"request"); - LOG(L_INFO, "ERROR: at line 0 char %d: \n", offset ); + LOG(L_DBG, "at line 0 char %d: \n", offset ); prn=pkg_malloc( offset ); if (prn) { for (t=0; t<offset; t++) if (*(buffer+t)) *(prn+t)=*(buffer+t); else *(prn+t)='�'; - LOG(L_INFO, "ERROR: parsed so far: %.*s\n", offset, ZSW(prn) ); + LOG(L_DBG, "parsed so far: %.*s\n", offset, ZSW(prn) ); pkg_free( prn ); }; error1: fl->type=SIP_INVALID; - LOG(L_INFO, "ERROR:parse_first_line: bad message\n"); + LOG(L_ERR, "parse_first_line: bad message\n"); /* skip line */ nl=eat_line(buffer,len); return nl;

2 1

new compiler warnings
by Juha Heinanen 29 Aug '13

29 Aug '13

'make' in master results on debian wheezy in the warnings shown below that i don't remember seeing before. -- juha CC (gcc) [kamailio] cfg/cfg_ctx.o cfg/cfg_ctx.c: In function 'cfg_set_now': cfg/cfg_ctx.c:490:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:494:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:564:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:564:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:565:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:584:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c: In function 'cfg_commit': cfg/cfg_ctx.c:1125:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1133:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1185:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1185:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1190:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1225:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1226:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1226:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1228:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c: In function 'cfg_add_group_inst': cfg/cfg_ctx.c:1582:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1583:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1585:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1594:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c: In function 'cfg_del_group_inst': cfg/cfg_ctx.c:1678:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1679:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1681:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1692:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1710:6: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1712:6: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] cfg/cfg_ctx.c:1718:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

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sr-dev August 2013