sr-users March 2015

sr-users@lists.kamailio.org

88 participants
149 discussions

Presence data to users behind NAT
by Olli Attila 22 Mar '15

22 Mar '15

Hello, Im running kamailio 4.2.3 and I'm trying to build a system where I could have the following features: SIP proxy, RTP proxy, Presence & XCAP service for IM messaging. I have a problem with the Presence service with users that are located behind nat. When Kamailio sends presence info to a watcher with sip NOTIFY message, the destaination ip for the pacage seems to be an un-routable (=private) ip, and so the watcher never receives the NOTIFY message making the watchers sip client unaware of the other users presence. Any suggestions how to make Kamailio handle the watchers behind nat so that the NOTIFY messages will get delivered succesfully? I tried the scenario with a client with public ip and the presence works fine. my kamailio.cfg: http://tny.cz/7d85773c -- Olli

2 1

Kamailio with websocket as transport
by Austin Einter 22 Mar '15

22 Mar '15

Dear All I have a sip user agent. Today it works fine with Kamailio using tcp as tranasport. Now I am planning to support websocket in my sip ua. My question is does Kamailio support websocket transport. If so how can I configure it or while building kamailio do I need to make some flags on. I am using latest Kamailio 4.2.3 (version: kamailio 4.2.3 (x86_64/linux)). Thanks Austin

2 2

Hardware config to run 1000 Kamailio TLS users
by elektau＠yandex.ru 20 Mar '15

20 Mar '15

Hi All, 1. What are resource requirements for running Kamailio server with TLS module active for 1000 registered users (concurrent calls) when running on VPS? In other words, what amount of RAM and processor power required? 2. What is the maximum number of Kamailio TLS users/concurrent calls can be made for the below default values? # Amount of shared and private memory to allocate # for the running Kamailio server (in Mb) SHM_MEMORY=64 PKG_MEMORY=8 Thanks.

3 3

Kamailio hardware requirements
by Mickael Marrache 20 Mar '15

20 Mar '15

Hi, We are currently deploying an entire architecture composed of load balancers, proxies and media relays. All the components except the media relays are Kamailio instances. The media relays are RTP proxy instances. We are trying to determine the hardware requirements for the different servers. We will start with an architecture composed of: . 2 load balancers (one kept as backup to ensure availability) . 2 proxies (load is balanced over the 2 using the DISPATCHER module) . 2 media relays We are trying to determine the recommended hardware for the different components taking into account we will need to serve around 400000 users. How many registrations per second can Kamailio support? How many concurrent calls can Kamailio support? What is the recommended number of children processes? What is the recommended size for PKG memory? What is the recommended size for SHM memory? Thanks for your help, Mickael

2 1

auth_diameter module
by Grant Bagdasarian 19 Mar '15

19 Mar '15

Hello, Does Kamailio still support authentication using the auth_diameter module? There is a note on the modules page stating the module is now obsolete. "NOTE: diameter support was developed for DISC (DIameter Server Client project at http://developer.berlios.de/projects/disc/). This project seems to be no longer maintained and DIAMETER specifications were updated in the meantime. Thus, the module is obsolete and needs rework to be usable with opendiameter or other DIAMETER servers." Is the page referring to this module or the DISC? Are there perhaps any other ways to do authentication with Kamailio using diameter?

2 1

RTPProxy issue?
by Igor Potjevlesch 19 Mar '15

19 Mar '15

Hello, I discovered an issue related to the handling of "timestamp" and/or "Marker bit" with rtpproxy (I use the latest Extension 20081224). The call-flow is the following: one UA places a call to A and put this call on hold. Then, the same UA call another number B. Individual streams are ok. When the UA tries to transfer A with B, the RTPProxy receive a RTP packet with a huge timestamp and the Marker bit set to "True". Just after this RTP packet, RTPProxy stop forward the RTP packets from A to B. B to C is still working. Anyone have an idea? Regards, Igor.

3 9

Sending PUSH notification asynchronously
by Mickael Marrache 19 Mar '15

19 Mar '15

Hi, I'm trying to add PUSH support to my system using Kamailio. When a call is received and the callee has no active registration, a PUSH is sent to the callee endpoint. In order to send this PUSH, my proxy sends an HTTP requests to another server that will send the PUSH. So, my route block is as follows: route[PUSH] { #Send PUSH notification using a custom module I wrote #Suspend transaction execution. t_on_failure("MANAGE_FAILURE"); if(!t_suspend()) { send_reply("503", "Service Unavailable"); exit; } $sht(push=>join::$rU) = "" + $T(id_index) + ":" + $T(id_label); exit; } I would like to execute this route block asynchronously (i.e. in a separate process). I tried using the async_task_route command, and I can see the route block is execute in a separate process, however some stuffs are broken (e.g. transaction timeout, failure route). So, I thought it may be related to the fact asynchronous execution is implemented using t_suspend/t_continue and in this case, t_suspend/t_continue would be called twice. The important point is to make the interaction with the PUSH server asynchronous. Any idea? Thanks, Mickael

2 6

Timeout after t_suspend and failure route
by Mickael Marrache 19 Mar '15

19 Mar '15

Hi, When receiving an INVITE, I arm a failure route and set the fr_timer to 30 seconds. After the fr_timer expires, I need to do some operations however I see the failure route is not executed. I guess it is related to the fact the INVITE has not been forwarded? If yes, how can I execute code when a transaction times out after calling t_suspend? Thanks, Mickael

2 7

missing BYE when 2 redundant kamailio servers share the same database
by Ding Ma 19 Mar '15

19 Mar '15

This is the SIP log when using location routing for BYE from peer server.

1 0

missing BYE when 2 redundant kamailio servers share the same database
by Ding Ma 19 Mar '15

19 Mar '15

This is the SIP log with the 500 error for BYE.

1 0

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sr-users March 2015