sr-users March 2013

sr-users@lists.kamailio.org

92 participants
142 discussions

Kamailio with PostgreSQL as persistence
by Hoai-Anh Ngo-Vi 13 Mar '13

13 Mar '13

Dears, I have tried out Kamailio 3.3.4 with PostgreSQL as persistence but it does not work. make FLAVOUR=kamailio include_modules="db_postgres" cfg was OK. I found /usr/local/lib/kamailio/modules/db_postgres.so after installation. I have successfully set up database openser using /usr/local/sbin/kamdbctl create with DBENGINE=PGSQL in /usr/local/etc/kamailio/kamctlrc. I have edited /usr/local/etc/kamailio/kamailio.cfg with: #!define WITH_PGSQL #!define WITH_AUTH #!define WITH_USRLOCDB ... #!ifdef WITH_PGSQL #!define DBURL "postgres://openser/openserrw@localhost:5432/openser" #!endif ... #!ifdef WITH_PGSQL loadmodule "db_postgres.so" #!endif Run /etc/init.d/kamailio start|debug I got Listening on .... kamailio error, failed to start. Does someone know some hints or have a working example? When I comment out the first 3 define kamailio starts fine. Thank you for your help. -- Ngô Vi Hoài Anh Biedenkopfer Weg 13 60489 Frankfurt am Main 069 74 22 36 63 0172 53 97 0 82

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Re: [SR-Users] how to extract the ip address in the via header received paramter
by Ajay Sabat 13 Mar '13

13 Mar '13

Hi Daniel, Thanks for your response. But I don't want the IP in the received parameter of the incoming request. Instead, I want to read it (i.e. the public IP address of my own network where the local user and Kamailio are located) from the incoming response received from another proxy located outside the network. And I need that because Kamailio strips the top most via (where the received parameter is present ) in the incoming response before sending it back to the local user, which I guess is correct. But the user needs to know that IP address. So we are planning to send that IP address in a custom header in the response back to the user. After going through some Kamailio documents I found that $sel(via.received) would return the IP address in top most via of a message. Can I store it in a variable inside onreply_route[MANAGE_REPLY] block and use that variable later in some appropriate route block to insert a new header in the response to the local user? Can I do something as given below to fetch and store the IP address from received parameter in the via header of incoming response onreply_route[MANAGE_REPLY] { ... if(search_hf("Via", "received", "f")) { xdbg("received param exists on top most via header \n"); $var(public_ip) = $sel(via.received); } ... } and insert a new header as given below in an appropriate route block which is executed while sending response back? append_hf("My-custom-hdr: $var(public_ip) \r\n"); I am not sure if this logic would work. Is the $var() variable retained through two different sip transactions? And which route block should be used to insert the header as mentioned above? Please help. Thanks, Ajay Hello, the received parameter is constructed from source IP of the incoming request. You get it via $si script variable. Cheers, Daniel On 3/12/13 7:22 PM, Ajay Sabat wrote: > > Hi, > > I want to extract the IP address in the received parameter of the top > most via header of a response and use that in a custom header while > sending response back to the caller. Can somebody please tell how to > implement that in the Kamailio configuration file? > > I need to handle a NAT traversal scenario without enabling NAT in > Kamailio which is used as the proxy server. The caller which is in the > same network as Kamailio first sends a OPTIONS request to the callee > before sending the INVITE. It uses the public IP address returned in > the custom header of the OPTIONS response to build the contact header > and SDP of the INVITE request. In fact, it first looks for the IP > address in the received parameter of the via header to do that. But > Kamailio removes the top most via with received parameter and then > sends the OPTIONS response back to the caller. So we are using a > custom header for that purpose. > > I would appreciate other suggestions to achieve this in Kamailio, may > be by enabling NAT or some other alternative. > > Thanks, > > Ajay > > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing > list sr-users(a)lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio World Conference, April 16-17, 2013, Berlin - http://conference.kamailio.com -

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Need help understanding/separating signaling from media
by Grant Bagdasarian 13 Mar '13

13 Mar '13

Hello, I want to separate signaling and media in our architecture but I'm not entirely sure if the following will work (note that it is still in a design phase and these kinds of constructs are still new to me): User Agent 1-------------- Kamailio -------------- User Agent 2 | | | | | | -------------- Media Server Cluster -------------- The signaling will go through Kamailio but the media stream should pass through one of the media servers in the cluster for each call. Is it possible to achieve this by having Kamailio instruct the media server which ports to open and alter sdp information? I think that the RTP Proxy module does precisely this, but what I still don't understand is how the rtp stream is passed between these two agents for each call. Also, is RTP proxy the best way to do this or are there any other third party media servers which I could use? I don't need any fancy functionality, just basic media handling/pass-through. Regards, Grant

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Send Bye to all calls in one profile
by Camila Troncoso 13 Mar '13

13 Mar '13

Hi, I have a kamailio proxy server that´s controlling the limit of calls that clients can make with profile grouping. In other side I also limit clients call duration base on users credit ( DATABASE) and *timeout *feature . Before the calls get answer I calculate how much time the client has left for this call and set the timeout variable. When the time is reached the proxy sends BYEs two both sides of this call. I want when the call timeout, as before explain, all other calls in the same profile end too, because the client has expired his credit. Is there a way to achieve this? Regards, Camila *Camila Troncoso **|* Ingeniero de Desarrollo RedVoiss *|*ctroncoso(a)redvoiss.net Santiago - Chile *|* +56 2 2408535 www.redvoiss.net

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java code to interact with kamailio
by Rupayan Dutta 13 Mar '13

13 Mar '13

Dear Sir, I want to authenticate users as well as getting buddy list from kamailio using java .Is there any existing library already in place. Rupayan Dutta

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how to extract the ip address in the via header received paramter
by Ajay Sabat 13 Mar '13

13 Mar '13

Hi, I want to extract the IP address in the received parameter of the top most via header of a response and use that in a custom header while sending response back to the caller. Can somebody please tell how to implement that in the Kamailio configuration file? I need to handle a NAT traversal scenario without enabling NAT in Kamailio which is used as the proxy server. The caller which is in the same network as Kamailio first sends a OPTIONS request to the callee before sending the INVITE. It uses the public IP address returned in the custom header of the OPTIONS response to build the contact header and SDP of the INVITE request. In fact, it first looks for the IP address in the received parameter of the via header to do that. But Kamailio removes the top most via with received parameter and then sends the OPTIONS response back to the caller. So we are using a custom header for that purpose. I would appreciate other suggestions to achieve this in Kamailio, may be by enabling NAT or some other alternative. Thanks, Ajay

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Malformed PUBLISH from pua_dialoginfo (4.0.0)
by Charles Chance 13 Mar '13

13 Mar '13

Hi all, We are testing 4.0.0 in the lab and since upgrading, PUBLISHes generated by pua_dialoginfo appear to be malformed (content-length mismatch). Please see attached output from Wireshark for both the PUBLISH and the 400 response from Kamailio. PUBLISH is being sent from one Kamailio to another - nothing has changed other than upgrading from 3.3.3 to 4.0.0. Has anyone else noticed the same? Regards, Charles -- www.sipcentric.com Follow us on twitter @sipcentric <http://twitter.com/sipcentric> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court South, Birmingham B7 4EJ.

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Failover on carrierroute
by Ali Jawad 13 Mar '13

13 Mar '13

Hi I did setup carrierroute with failover using t_on_failure, I do have 4 ".25 ratio" primary gateways for one carrier and 4 ".25 ratio"secondary gateways for a secondary carrier. However, given the current setup, if one gateway is down carrieroute does use the secondary carrier if one gateway of the primary carrier is down. What I need is to only go to the secondary carrier if all the gateways of the primary carrier are down. I thought of setting up 4 t_on_failure branches with carrierroute but that will be troublesome to maintain. Is there another method for this ? Regards

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High availability
by Moacir Ferreira 12 Mar '13

12 Mar '13

Hi, What would be the community's architecture advice for deploying Kamailio in a high availability environment? I am looking for something simple, still efficient. Thanks,

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Porting kamailio4 to OpenWrt
by Jiri Slachta 12 Mar '13

12 Mar '13

Hello everyone, I am new to this list and I am a newbie when it comes to Kamailio details, so sorry for any of my misunderstandings. I am the author of kamailio3 package in OpenWrt and currently I am trying to port recent major release of kamailio to OpenWrt. Let's jump directly to my question. The current state of my Kamailio4 package is that all modules which does not depend on any external libraries, are succesfully built. Any module that depends on external library is not built at all. But if I pass LD="$(TARGET_CC)" to the linker via: make -C/path/to/module LD="$(TARGET_CC)" then the module is succesfully compiled. I build kamailio4 via macro Build/Compile in following Makefile - http://liptel.vsb.cz/svn/besip/Trunk/packages-trunk/net/kamailio4/Makefile My question is - has anything changed in build procedures or variables significantly? It seems that LD variable is not passed into Makefiles of specific modules. Am I doing anything wrong? I am open to any suggestions. Thank you! ~ Jiri Slachta

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sr-users March 2013