sr-users October 2014

sr-users@lists.kamailio.org

101 participants
187 discussions

rtpengine not working with append_branch
by Yuriy Gorlichenko 27 Oct '14

27 Oct '14

Hello all. I use rtpengine and rtpproxy-ng module at kamailio for proxying RTP and modifying SDP between endpoints. I use two types of clients - such as WSS based and UDP based clients. I have a trouble with append_branch and rtpengine handling for this packets. I try to implement this logic of my script Logic of my script: --checking location table for rows with needed account --get info from contact at loop for every step --check technology (sip or ws) --append_branch with existing destination for this account --rewrite packet with rtpengine to needed technology after loop forward packets via t_relay At listing bellow rtpproxy_manage have no flag "b" that implement needed functionality. It not included at the script because I tried include it but rtpengine says that ca nnot handle this request. As i understand this flag worked with rtpproxy and rtpproxy-ng apps only. Not with rtpengine. At my test I have 2 endpoints with WS and UDP phones (at fist step ir WS and 2 step it UDP). All calls going form asterisk via UDP. When I do these steps (at my script) I see packet at TCP dump and saw that sended only one packet to UDP but body of packet is WS. Then I saw log of kamailio. I see that at second step packet changed body to WS body (so strange because other steps before and after goes for UDP (as at logic of script)) If I set "b" flag I can call only UDP endpoint, but at log I see as I say that rtpengine can not do thomething with SIP packets and send with t_relay uncghanged UDP packet only. sql_query("ca", "select contact from location where username='$tU'", "ra"); xlog("rows: $dbr(ra=>rows) cols: $dbr(ra=>cols)\n"); if($dbr(ra=>rows)>0){ $var(i)=0; while($var(i)<$dbr(ra=>rows)){ xlog("L_INFO","SQL query return contact {$dbr(ra=>[$var(i),0])} for {$tU} at step {$var(i)}\n"); if ($dbr(ra=>[$var(i),0])=~"transport=ws"){ xlog("L_INFO", "This is a Websocket call to endpoint"); sql_pvquery("ca", "select received from location where contact='$dbr(ra=>[$var(i),0])'","$var(recieved)"); xlog("L_INFO","SQL query return recieved {$var(recieved)} for {$tU}\n"); $du=$var(recieved); xlog("L_INFO", "Request going FROM ASTERISK to WS. Destination is {$du}\n"); xlog("L_INFO","Websocket Destination URI is {$var(recieved)} for {$tU}\n"); rtpproxy_manage("froc+SP"); t_on_reply("REPLY_FROM_WS"); append_branch("sip:$tU@$du"); $var(i) = $var(i) + 1; } else { xlog("L_INFO", "This is a classic UDP call to endpoint"); $du="sip:"+$(dbr(ra=>[$var(i),0]){s.select,1,@}); xlog("L_INFO","Classic Destination URI is {$dbr(ra=>[$var(i),0])} for {$tU}\n"); rtpproxy_manage("co"); t_on_reply("MANAGE_CLASSIC_REPLY"); append_branch("sip:$tU@$du"); $var(i) = $var(i) + 1; } #append_branch("sip:$tU@$du"); } } return 1; So it customised schema of standart example seturi("sip:a@example.com <https://e.mail.ru/compose/?mailto=mailto%3asip%253Aa@example.com>"); append_branch("sip:b@example.com <https://e.mail.ru/compose/?mailto=mailto%3asip%253Ab@example.com>"); append_branch("sip:c@example.com <https://e.mail.ru/compose/?mailto=mailto%3asip%253Ac@example.com>"); append_branch("sip:d@example.com <https://e.mail.ru/compose/?mailto=mailto%3asip%253Ad@example.com>"); t_relay(); I need fro advice how to fix this may be with another applications or with another steps. Thanks.

3 12

msilo kamailio 4.2
by nadie 27 Oct '14

27 Oct '14

Hello, excuse me for the question. I compiled kamailio 4.2 from git with msilo. kamailio.cfg ############################## loadmodule "msilo.so" # ------ msilo params ----- modparam("msilo", "db_url", DBURL) modparam("msilo","from_address","sip:registrar@kamailio.org") modparam("msilo","contact_hdr","Contact:registrar@192.168.1.3:5060;msilo=yes\r\n") modparam("msilo","content_type_hdr","Content-Type: text/plain\r\n") modparam("msilo","offline_message","*** User $rU is offline!") But now, i don't know where introduce route code. And in the documentation route coude tells "test only, REGISTER ok" Are there code for secure production? Thank you.

1 0

Fwd: DROUTING module slow loading
by Uri Shacked 26 Oct '14

26 Oct '14

Hi, When DROUTING table "dr_gateways" is very big (40000 rows) reloading the module to memory take about 60 seconds !!! My tests show 5000 rows takes 7-11 seconds...... It is very slow. The rules table, with 40000 rows, loads immediately though. Any ideas why? Or how to get the process faster? (I know the gateway table is too big. but, this is the current implementation...) kamailio version - 3.3.6 (48db34) BR, Uri

1 0

new compiler warning in 4.2
by Juha Heinanen 25 Oct '14

25 Oct '14

i build kamailio from latest 4.2 branch and got CC (cc) [M textops.so] textops.o textops.c: In function 'append_multibody_helper': textops.c:1867:2: warning: implicit declaration of function 'get_mixed_part_delimiter' [-Wimplicit-function-declaration] please fix asap. -- juha

1 0

Converting JSON string to normal string
by Muhammad Shahzad 25 Oct '14

25 Oct '14

Hi, Using method json_get_field i am able to extract json string. However, this string comes with quotes which cause a hurdle in assigning to various pseudo variables, for example, -- json_get_field($redis(r=>value), "to_number", "$var(wim_to)"); json_get_field($redis(r=>value), "domain", "$var(wim_domain)"); $uac_req(ruri)="sip:" + $var(wim_to) + "@" + $var(wim_domain); -- This results in $uac_req(ruri) being set as. sip:"49XXXXXXXX"@"sip.mydomain.com" Which is obviously wrong and fails the transaction processing. Is there any way to get rid of these quotes from json strings? One possible way i can think of is using string transformation "s.substr", but there are a lot of json strings i have in config and it is too hectic to transform all of them. Is there any easier way out of this? Thank you.

2 2

Failed to install Kamailio database
by Mahmoud Ramadan Ali 25 Oct '14

25 Oct '14

Hiii everyone, I can not create kamailio database and get this error message... any ideas ? Thanks in advance...

2 6

How do I configure this thing?
by Nolan Darilek 24 Oct '14

24 Oct '14

OK, sorry for the basic question, but I'm overwhelmed. My install gives me a kamailio-basic.cfg, kamailio.cfg and kamailio-oob.cfg. Is there any explanation as to the difference between these? I assume "basic" is a simpler config, but I don't know what it lacks vs. kamailio.cfg, and I have no idea what "oob" means ("out-of-band?") The configs reference a kamailio-local.cfg. My assumption was that I could place config changes here, but I see later that kamailio.cfg changes some parameters. In particular, I set various auth_db parameters in kamailio-local.cfg which kamailio.cfg changes later. So I don't understand when I might want to use kamailio-local. The config files refer me to a cookbook, but unless I'm missing something, the cookbook is a long list of config directives. When I read "cookbook" I assume I'm being directed to something containing recipes like "how to enable web sockets," with step-by-step guides about which config files to edit and what to add. Am I just missing that? Is there a task-oriented getting started page that I'm missing, that would help me set up a web socket-based SIP server? Then, when I hit the inevitable issues, I can resolve specific problems rather than trying to figure this all out from scratch? I see the documentation attached to the web sockets module, but many of these docs include stand-alone config snippets with no indication as to how to integrate them into a larger config. For instance, the ephemeral auth module tells me how to set up an ephemeral auth route but doesn't give me enough context to place the snippet correctly in the 900+-line kamailio.cfg, and actually I suspect it wouldn't work anyway since I see nothing about HTTP in the kamailio.cfg. Sorry if I seem frustrated. I'm willing to learn, I've just been handed a jet engine and a few suggested tweaks, but not enough context to know how to make them. :) I'll be learning more about SIP and what role a SIP router plays, but it'd be helpful to be able to bootstrap a server so I can learn by doing as well. I'd just like to provide audio/video communication for a single SIP domain, authenticating against MongoDB and with ephemeral auth so Javascript clients can get temporary credentials. I don't want voicemail, outbound routing, etc. This seems like it should be simple to achieve, but I don't know how or where to start in a way that would allow me to build up. Thanks.

3 6

Kamailio + RTPEngine behind NAT (STUN Handling)
by Marko Seidenglanz 24 Oct '14

24 Oct '14

Hello, We want to use Kamailio (4.2) + RTPEngine (3.3) behind NAT. Unfortunately the STUN Messages (Binding Requests) sent from remote peer (Google Chrome ) do not arrive at RTPEngine host. I think they get blocked by the firewall. RTPEngine itself does not send any STUN Messages until it get's the first message from the remote peer as Google Chrome has the "active" role in DTLS Agreement. Is there a way to tell RTPEngine to open the ports for remote peer, so that the messages arrive? When RTPEngine is not behind NAT, everything works as expected. Kind regards, Marko

2 1

Dealing with High PDD
by Ryan Brindley 24 Oct '14

24 Oct '14

Hey Community, I've tried to google and view the docs for Kamailio about fr_inv_timer (and other timers), but I don't think they do what I'm wanting. Basically, I want to cancel an INVITE request and progress to the next contact if the current contact has not send a non-100 provisional code or final response after a certain amount of time. Am I missing some obvious setting that I overlooked in my searches or do I have to approach this 'manually' (aka, not just a setting)? Any help is greatly appreciated. Ryan Brindley

2 2

Kamailio, authentication and MongoDB
by Nolan Darilek 24 Oct '14

24 Oct '14

Hello. I'm attempting to set up Kamailio for the first time and have a few questions. 1. The auth_db module specifically calls out MySQL, Postgres and flat file databases, but makes no mention of the new MongoDB module. Is the new MongoDB module supported as well and the docs just haven't been updated to account for that? 2. In looking at the auth_db parameters, I see values for column names, but nothing for a table/collection. How do I specify what table or collection my user data is in? 3. How do I create HA1 strings? The docs state: HA1 strings are MD5 hashes of username, password, and realm. Is that: md5(username+":"+password+":"+realm) or something else? Thanks.

1 1

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sr-users October 2014