sr-users May 2013

sr-users@lists.kamailio.org

95 participants
156 discussions

Via header, branch parameter and syn_branch
by Richard Brady 28 May '13

28 May '13

Hi folks The syn_branch global parameter results in the use of a "synonym" branch parameter in the Via header for statelessly forwarded requests as a performance optimisation. This was originally done by setting branch=0 which, while not strictly compliant with 3261 (8.1.1.7 and 16.6 item 8), would not cause any problems with a downstream proxy or UA compliant to either 3261 or 2543 since it does not contain the cookie and is therefore self-evidently not guaranteed to be unique. Then a patch was added (commit ebb3b08) to change it from branch=0 to branch=z9hG4bKcydzigwkX which includes the cookie, thus declaring itself to be unique when it clearly is not. This takes the optimisation too far as it deliberately misleads downstream proxies with regard to the uniqueness of the parameter and breaks the mechanism in 17.2.3 for identifying unreliable (non-unique) branch parameters for transaction matching which should then fall back to header inspection but does not. The result is that unrelated requests can be identified as duplicates of each other. Also note 3261 section 16.11 on Stateless Proxy behaviour: "The requirement for unique branch IDs across space and time applies to stateless proxies as well." Has the commit above introduced a bug and should it be reverted? And should the next major release have a default of syn_branch=0? Since with syn_branch=1 the branch=0 version has been known to cause interop issues in the past (see below) and I can confirm the branch=z9hG4bKcydzigwkX version causes interop issues in the present. Regards, Richard See also these related threads: [SR-Users] Via header branch parameter in ACK message not unique http://lists.sip-router.org/pipermail/sr-users/2011-December/071207.html [SR-Users] "branch" tag in the "Via" header of the ACK message for the re-INVITE http://lists.kamailio.org/pipermail/sr-users/2012-November/075560.html [Serusers] branch parameter http://lists.sip-router.org/pipermail/sr-users/2007-February/060147.html [SR-Users] about syn_branch http://lists.sip-router.org/pipermail/sr-users/2011-March/067732.html [SR-Users] Via branch parameter in end2end ACK http://lists.sip-router.org/pipermail/sr-users/2011-May/068627.html [SR-Users] Broken Via/reply-matching for natping OPTION http://lists.sip-router.org/pipermail/sr-users/2011-April/068340.html [Serusers] ACK message Via field branch=0 problem http://lists.sip-router.org/pipermail/sr-users/2004-July/037731.html

2 3

kamailio 4.0.1 websocket configuration error
by Rupayan Dutta 28 May '13

28 May '13

Hi, I have build Kamailio 4.0.1 from source in CentOS 5.8(i386 architecture).I followed all instructions from http://www.kamailio.org/wiki/install/4.0.x/git.(Though Modules_k directory is not generated).I then edit kamailio.config file for websocket support as described in webocket.cfg file in exmples directory.But while starting kamailio it gives following error ERROR: load_module: could not open module : libunistring.so.0: cannot open shared object file: No such file or directory 0(30270) : [cfg.y:3567]: parse error in config file /usr/local/etc/kamailio/kamailio.cfg, line 318, column 12-57: failed to load module I checked websocket.so file in the specified directory and it is already there.Can you please help me what's rong with it? please help. Rupayan Dutta

1 0

pv_trans:312 - substr out of range
by Uri Shacked 28 May '13

28 May '13

Hi, can anyony tell me when will i get the following error : "substr out of range". i saw it has something to do with the pv_trans.c file and i saw it there. but, is it related to "shvset" or to "substr" command BR, Uri

2 2

How does save(location) choose the subscriber
by Mino Haluz 28 May '13

28 May '13

Hi, if I do save(location) when receiving REGISTER, what is the header which indicates the subscriber for which it will be registered ? $fu?$au?$tu? Thanks, Mino

3 2

TLS
by Moacir Ferreira 28 May '13

28 May '13

I would appreciate some help on the following questions I have: - If I use TLS mutual authentication, do I still need a subscriber password or the TLS successful mutual session setup will assume that the client is "trusted" so it can register what it is asking to register? - For large deployments, can I issue a single certificate and install it on all my telephone sets making them "trusted" to me or I need one certificate per telephone/subscriber? - Anyway, can you share your "good practices" advises for large deployment? - Finally, do you know any free softphone that implements mutual TLS authentication? Thanks, Moacir

3 5

topoch and xHTTP
by Julia 28 May '13

28 May '13

Hello, I am testing the xHTTP module on kamailio-3.3 with topology hiding (topoch) and I get parsing error for each received HTTP message: /usr/local/sbin/kamailio[2937]: ERROR: <core> [parser/parse_from.c:60]: ERROR:parse_from_header: bad msg or missing FROM header /usr/local/sbin/kamailio[2937]: ERROR: topoh [topoh_mod.c:215]: cannot parse FROM header Is it configuration issue? Thanks, Julia.

2 5

question
by Dave Paxton 27 May '13

27 May '13

I have a login with iptel. I am trying to set up jitsi or linphone with someone in argentina. The server sees us both on but we cannot get the thing to work. Each program shows we are online but there is no way to connect. I must be doing something stupid. Thanks, Dave Paxton 6408 Colonial Drive Boise, ID 83709 208-570-9755 dpaxton(a)me.com Skype: dpaxton

4 4

Business directory reminder
by Daniel-Constantin Mierla 27 May '13

27 May '13

Hello, a quick reminder to our old and new community members that companies and individuals offering services for or products based on Kamailio can get listed on project's business directory. There are few basic rules that apply, you can read more at: - http://www.kamailio.org/w/business-directory/ Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013 * http://asipto.com/u/katu *

1 0

Adding Contacts info from branches in 302 redirect not as expected
by DanB 27 May '13

27 May '13

Hey Guys, I was wondering if someone can help me with identifying my issue (which I suspect it as a bug). I am doing some redirect tests between 2 servers, both running same Kamailio version - 4.0.0 out of debian packages. """ root@IECDev:/home/dan# kamailio -V version: kamailio 4.0.0 (x86_64/linux) flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 13:13:24 Mar 29 2013 with gcc 4.7.2 """ On redirect server I have location stored, doing lookup and right after using "sl_send_reply("302", "iClass4-AP Redirect");" Up to information stored in the Contact of redirect request everything works smooth, the problem which I get is with the information in the Contact of the redirect: """ # U 2013/05/27 16:55:39.171237 127.0.0.1:5070 -> 10.10.10.21:5060 SIP/2.0 302 iClass4 AP Redirect. Call-ID: 1886b401c36753c96bb85a0f4ad7ef88@0:0:0:0:0:0:0:0. CSeq: 2 INVITE. From: "dan" <sip:dan@iec.itsyscom.com>;tag=9f9fd3ed. To: <sip:dan@iec.itsyscom.com>;tag=46a6e639fa023622ac1ba4fea686e961.affb. Via: SIP/2.0/UDP 10.10.10.21;branch=z9hG4bK0947.8bc60857.0. Via: SIP/2.0/UDP 10.10.10.154:5060;rport=5060;branch=z9hG4bK-363833-3efe2f43332be9a60ebd1e1aad124280. Contact: <sip:dan@10.10.10.141:3072;line=qhjb2bk0;rcv=sip:10.10.10.141:3072>;q=1, sip:dan@10.10.10.154:5060;transport=udp;registering_acc=iec_itsyscom_com. Server: iClass4-AP 4.0.0. Content-Length: 0. """ It appears that the information of the first contact is correctly encapsulated but the second (out of first branch) not. Due to this in the server capturing the redirect I will only have first contact correctly written in the ruri and second one partially. Example of loging this: """ May 27 16:55:39 IECDev /usr/sbin/kamailio[3556]: ERROR: <script>: Extracted destination set: Contact: <sip:dan@10.10.10.154:5060>;q=0.01, <sip:dan@10.10.10.141:3072;line=qhjb2bk0;rcv=sip:10.10.10.141:3072>;q=1, ru: sip:dan@iec.itsyscom.com, du: sip:127.0.0.1:5070 May 27 16:55:39 IECDev /usr/sbin/kamailio[3556]: ERROR: <script>: Branches: <sip:dan@10.10.10.154:5060>;q=0.01, <sip:dan@10.10.10.141:3072;line=qhjb2bk0;rcv=sip:10.10.10.141:3072>;q=1 """. I would suspect the redirect function not properly inserting the content of each contact uri within it's own <> boundaries but I would appreciate a confirmation on this from someone more experienced with Kamailio's code. Thanks in advance for any tip! DanB

2 1

SCTP support of MultiHoming...
by Jignesh Gandhi 27 May '13

27 May '13

Hello, I read in the documentation that Kamailio SCTP supports multi homing. Does anyone know how I can configure this? Thanks in advance, --Jignesh Gandhi

2 2

← Newer
1
2
3
4
5
6
7
8
9
...
16
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

sr-users May 2013