[SR-Users] Kamailio - Separated Servers
Bruno Emer
brunoemer at gmail.com
Wed Sep 24 20:55:25 CEST 2014
Excellent, Nick!
And if you need some help or stuck in some point, don't hesitate on contact
me! I have done a lot of work to get websockets working, and maybe I can
share my experience with you as well.
:-)
*Bruno Emer*
Mobile: +55 11 96540-0044
email: brunoemer at gmail.com
<https://www.facebook.com/bruno.emer.5>
<https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
<https://twitter.com/brunoemer_>
<https://www.flickr.com/photos/122070309@N03/>
<http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
2014-09-24 14:46 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
> Hello Nick!
>
> I'm still learning more about Kamailio and how it works. This is being a
> lil bit hard to me because I don't understand too much about programming
> and all those "if's" and "else's", but I'll be happy to help you and
> provide you the information that I used to have y scenario working fine.
>
> I spent a lot of time to have this scenario up and running in the way that
> I need, but here are the main documentation which I used:
>
>
> This link here explain how to have Registrar and Proxy in different
> servers. It helped me a lot to understand the message flow between the
> servers:
> http://www.kamailio.org/dokuwiki/doku.php/tutorials:openser-modular-install
>
> This here, shows how to enable the websockets in Kamailio. I think that is
> a good point to start:
> http://nil.uniza.sk/sip/kamailio/configuring-kamailio-4x-websocket
>
> Here I found a good example that shows how to have an Edge Proxy with
> websockets support:
>
> https://github.com/kamailio/kamailio/blob/master/examples/outbound/edge_websocket.cfg
>
>
>
> So, I got a mix of information and a lot of attempts and errors.
>
> BTW, many thanks to Daniel and Frank Carmickle that helped me a lot with
> my questions!
>
> If you need more help, please let me know!
>
> :-)
>
>
>
> *Bruno Emer*
>
> Mobile: +55 11 96540-0044
> email: brunoemer at gmail.com
> <https://www.facebook.com/bruno.emer.5>
> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
> <https://twitter.com/brunoemer_>
> <https://www.flickr.com/photos/122070309@N03/>
> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>
> 2014-09-24 10:52 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
>
> Thanks again for your help, Daniel!
>>
>> Now my scenario is working!
>> I have two Edge Proxies and a single Registrar server pointing to a
>> external PostgreSQL database.
>>
>> My two users (alice and bob) are authenticated each one in a Edge Proxy
>> and I can start a session between then using WebSockets. I'm using WebRTC
>> (JSSIP) as a client to start the calls.
>>
>> :-)
>>
>>
>>
>>
>>
>> *Bruno Emer*
>>
>> Mobile: +55 11 96540-0044
>> email: brunoemer at gmail.com
>> <https://www.facebook.com/bruno.emer.5>
>> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
>> <https://twitter.com/brunoemer_>
>> <https://www.flickr.com/photos/122070309@N03/>
>> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>>
>> 2014-09-23 18:07 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
>>
>> Hello Guys!
>>>
>>> Good news about my tests here!
>>> I found some configurations relative to Outbound proxy and I get this
>>> working. Now, I can have two outbound proxies, one registrar and one
>>> database. I can register one user in the Outbound Proxy1 and one user in
>>> Outbound Proxy 2 and place a call between these users.
>>>
>>> But now I'm facing another problem! The ACK messages are not being
>>> delivered, so the session is being dropped after a few seconds. I think
>>> that the problem is in the Contact field. Trying to investigate it now!
>>>
>>> I'm not sure about how to change the message to deliver the ACK. Did
>>> someone had this problem before?
>>>
>>> In anycase, here is the routing configuration that I'm using in my
>>> Oubound proxy:
>>>
>>>
>>> request_route {
>>> if (($Rp == MY_WS_PORT || $Rp == MY_WSS_PORT)
>>> && !(proto == WS || proto == WSS)) {
>>> xlog("L_WARN", "SIP request received on $Rp\n");
>>> sl_send_reply("403", "Forbidden");
>>> exit;
>>> }
>>>
>>> route(REQINIT);
>>>
>>> if (is_method("CANCEL")) {
>>> if (t_check_trans()) {
>>> route(RELAY);
>>> }
>>> exit;
>>> }
>>>
>>> route(WITHINDLG);
>>>
>>> t_check_trans();
>>>
>>> if (is_method("REGISTER")) {
>>> remove_hf("Route");
>>> add_path();
>>> $du = "sip:REGISTRAR_IP:REGISTRAR_PORT";
>>> } else {
>>> if (is_method("INVITE|SUBSCRIBE|ACK"))
>>> record_route();
>>>
>>> if (@via[2] == "") {
>>> # From client so route to registrar...
>>>
>>> if ($rU == $null) {
>>> sl_send_reply("484", "Address Incomplete");
>>> exit;
>>> }
>>> remove_hf("Route");
>>> $du = "sip:REGISTRAR_IP:REGISTRAR_PORT";
>>> } else {
>>> # From registrar so route using "Route:" headers...
>>>
>>> if (!loose_route()) {
>>> switch($rc) {
>>> case -2:
>>> sl_send_reply("403", "Forbidden");
>>> exit;
>>> default:
>>> xlog("L_ERR", "in request_route\n");
>>> sl_reply_error();
>>> exit;
>>> }
>>> }
>>>
>>> t_on_failure("FAIL_OUTBOUND");
>>> }
>>> }
>>>
>>> route(RELAY);
>>> }
>>>
>>> route[RELAY] {
>>> if (!t_relay()) {
>>> sl_reply_error();
>>> }
>>> exit;
>>> }
>>>
>>> route[REQINIT] {
>>> if (!mf_process_maxfwd_header("10")) {
>>> sl_send_reply("483","Too Many Hops");
>>> exit;
>>> }
>>>
>>> if(!sanity_check("1511", "7"))
>>> {
>>> xlog("Malformed SIP message from $si:$sp\n");
>>> exit;
>>> }
>>> }
>>>
>>> route[WITHINDLG] {
>>> if (has_totag()) {
>>> if (!loose_route()) {
>>> switch($rc) {
>>> case -2:
>>> sl_send_reply("403", "Forbidden");
>>> exit;
>>> default:
>>> if (is_method("ACK")) {
>>> if ( t_check_trans() ) {
>>> record_route();
>>> route(RELAY);
>>> exit;
>>> } else {
>>> exit;
>>> }
>>> }
>>> sl_send_reply("404","Not Found");
>>> }
>>> } else {
>>> if (is_method("NOTIFY")) {
>>> record_route();
>>> }
>>> route(RELAY);
>>> }
>>> exit;
>>> }
>>> }
>>>
>>> onreply_route {
>>> if (($Rp == MY_WS_PORT || $Rp == MY_WSS_PORT)
>>> && !(proto == WS || proto == WSS)) {
>>> xlog("L_WARN", "SIP response received on $Rp\n");
>>> drop;
>>> }
>>>
>>> if (!t_check_trans()) {
>>> drop;
>>> }
>>>
>>> if ($rm == "REGISTER" && $rs >= 200 && $rs <= 299) {
>>> remove_hf("Flow-Timer");
>>> if ($(hdr(Require)[*])=~"outbound")
>>> insert_hf("Flow-Timer: FLOW_TIMER\r\n", "Call-ID");
>>> }
>>> }
>>>
>>> failure_route[FAIL_OUTBOUND] {
>>> if (t_branch_timeout() || !t_branch_replied()) {
>>> send_reply("430", "Flow Failed");
>>> }
>>> }
>>>
>>> event_route[xhttp:request] {
>>> set_reply_close();
>>> set_reply_no_connect();
>>>
>>> if ($Rp != MY_WS_PORT
>>> #!ifdef WITH_TLS
>>> && $Rp != MY_WSS_PORT
>>> #!endif
>>> ) {
>>> xlog("L_WARN", "HTTP request received on $Rp\n");
>>> xhttp_reply("403", "Forbidden", "", "");
>>> exit;
>>> }
>>>
>>> xlog("L_DBG", "HTTP Request Received\n");
>>>
>>> if ($hdr(Upgrade)=~"websocket"
>>> && $hdr(Connection)=~"Upgrade"
>>> && $rm=~"GET") {
>>>
>>> # Validate Host - make sure the client is using the correct
>>> # alias for WebSockets
>>> if ($hdr(Host) == $null || !is_myself("sip:" + $hdr(Host))) {
>>> xlog("L_WARN", "Bad host $hdr(Host)\n");
>>> xhttp_reply("403", "Forbidden", "", "");
>>> exit;
>>> }
>>>
>>> # Optional... validate Origin - make sure the client is from an
>>> # authorised website. For example,
>>> #
>>> # if ($hdr(Origin) != "http://communicator.MY_DOMAIN"
>>> # && $hdr(Origin) != "https://communicator.MY_DOMAIN") {
>>> # xlog("L_WARN", "Unauthorised client $hdr(Origin)\n");
>>> # xhttp_reply("403", "Forbidden", "", "");
>>> # exit;
>>> # }
>>>
>>> # Optional... perform HTTP authentication
>>>
>>> # ws_handle_handshake() exits (no further configuration file
>>> # processing of the request) when complete.
>>> if (ws_handle_handshake())
>>> {
>>> # Optional... cache some information about the
>>> # successful connection
>>> exit;
>>> }
>>> }
>>>
>>> xhttp_reply("404", "Not Found", "", "");
>>> }
>>>
>>> event_route[websocket:closed] {
>>> xlog("L_INFO", "WebSocket connection from $si:$sp has closed\n");
>>> }
>>>
>>>
>>>
>>>
>>> Thanks again!!!
>>>
>>>
>>>
>>> *Bruno Emer*
>>>
>>> Mobile: +55 11 96540-0044
>>> email: brunoemer at gmail.com
>>> <https://www.facebook.com/bruno.emer.5>
>>> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
>>> <https://twitter.com/brunoemer_>
>>> <https://www.flickr.com/photos/122070309@N03/>
>>> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>>>
>>> 2014-09-22 12:40 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
>>>
>>> Hi, Daniel and Frank!
>>>>
>>>> Thanks for your support!
>>>> Now, I changed my scenario just a lil bit to make it easy to understand
>>>> and deploy. I'm doing the following:
>>>>
>>>> 1. Created a server using the "Outbound" module configuration
>>>> example, but add WebSocket support in it. (IP Address 192.168.1.16)
>>>> 2. Created a server running as Proxy and Registrar with WebSockets
>>>> support. (IP Address 192.168.1.15)
>>>> 3. Registered two users (bob and alice at enterprise.com) using
>>>> WebRTC. These users sent they Register requests to the Oubount server
>>>> (192.168.1.16).
>>>> 4. I'm also using an external postgres database to store the user
>>>> informations. In my proxy/registrar server, I've configurated
>>>> "modparam("usrloc", "db_mode", 3)", so it will not store data in memory.
>>>>
>>>>
>>>> After register the users in my scenario, I can see the following
>>>> information stored in my database (output of kamctl db show location):
>>>>
>>>> id | ruid | username | domain |
>>>> contact | received | path |
>>>> expires | q | callid | cseq | last_modified |
>>>> flags | cflags | user_agent | socket | methods |
>>>> instance | reg_id
>>>>
>>>> -----+----------------------+----------+----------------+------------------------------------------------+-----------------------+------+---------------------+----+------------------------+------+---------------------+-------+--------+-------------------+---------------------+---------+-------------------------------------------------+--------
>>>> 277 | uloc-54203f71-10bd-2 | alice | enterprise.com |
>>>> sip:v4s0prah at o35ctmdnnruv.invalid;transport=ws | sip:192.168.1.16:5060
>>>> | | 2014-09-22 15:31:21 | -1 | udb4shpe4dnm1jsl6016s5 | 82 |
>>>> 2014-09-22 15:26:21 | 0 | 0 | JsSIP 0.4.0-devel | udp:
>>>> 192.168.1.15:80 | 783 |
>>>> <urn:uuid:75c837d1-740a-4c62-baa0-56a06149699e> | 1
>>>> 278 | uloc-54203f71-10bc-2 | bob | enterprise.com |
>>>> sip:lr78s270 at 0mkf6fgtprlh.invalid;transport=ws | sip:192.168.1.16:5060
>>>> | | 2014-09-22 15:34:02 | -1 | 5mpl9q4bkuqsnpk8r316j5 | 82 |
>>>> 2014-09-22 15:29:02 | 0 | 0 | JsSIP 0.4.0-devel | udp:
>>>> 192.168.1.15:80 | 783 |
>>>> <urn:uuid:e92ef911-1ae4-45b1-bfc9-b5752b0f2fe1> | 1
>>>>
>>>>
>>>> So, I can assume that both users are registered and ready to start
>>>> sessions.
>>>>
>>>> Now, when I try to start a new session between then (let's say bob
>>>> calling alice) what I get in the endpoint is the following message:
>>>>
>>>> SIP/2.0 500 I'm terribly sorry, server error occurred (1/SL)
>>>> Via: SIP/2.0/WS
>>>> 0mkf6fgtprlh.invalid;rport=33154;received=192.168.1.11;branch=z9hG4bK7711221
>>>> To: <sip:alice at enterprise.com
>>>> >;tag=94c1b96a0e6eb467885b5057e1e49f9e.1970
>>>> From: <sip:bob at enterprise.com>;tag=on056iipql
>>>> Call-ID: 5e1pmj2fppbgg13doi4k
>>>> CSeq: 3989 INVITE
>>>> Server: kamailio (4.1.5 (x86_64/linux))
>>>> Content-Length: 0
>>>>
>>>> What I understood about this problem is that the Proxy server is trying
>>>> to forward the INVITE to the Outbound server and this server does not know
>>>> that to do with this message - like forward it to alice.
>>>>
>>>> I'm stucked in this step.
>>>>
>>>> Here you can find the configuration files that I'm using:
>>>>
>>>> Outbound Server:
>>>>
>>>> https://mega.co.nz/#!Wlw2RL7S!G2YOP-1QbSCeNQddaAe3kyQMqz8yteZlZsAUpjZX4v4
>>>>
>>>> Proxy Server:
>>>>
>>>> https://mega.co.nz/#!qxAXTbbb!4zBjRtmADdl3rPCN2Yidd3xnZEjFahW3GSMb00w41xc
>>>>
>>>>
>>>>
>>>> Thanks again!
>>>>
>>>> Bruno Emer
>>>>
>>>>
>>>>
>>>> *Bruno Emer*
>>>>
>>>> Mobile: +55 11 96540-0044
>>>> email: brunoemer at gmail.com
>>>> <https://www.facebook.com/bruno.emer.5>
>>>> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
>>>> <https://twitter.com/brunoemer_>
>>>> <https://www.flickr.com/photos/122070309@N03/>
>>>> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>>>>
>>>> 2014-09-18 18:04 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
>>>>
>>>> Ok, Daniel!
>>>>>
>>>>> I am trying exactly what you said, but for some reason the proxy
>>>>> server can't forward the message back to the WebSocket server. I am getting
>>>>> "487 Unresolvable destination". Appears that my Proxy Server can't get data
>>>>> from usrloc.
>>>>>
>>>>> When I register an user using WebRTC I can see that the system stores
>>>>> the information in kamailio database and in the field "contact" it puts a
>>>>> string. The Proxy server is looking in database and just find this
>>>>> information. Actually, I'm trying to understand the entire process that
>>>>> envolves passing information from an Edge Server to a Proxy server that
>>>>> sends the Register information to another Registrar server (as I described
>>>>> before). The database is shared between all the servers, and they are in
>>>>> the same network.
>>>>>
>>>>> I just read the information in another topic, as you said, but I think
>>>>> that my case is a lil bit different from it. I you agree, I can post my
>>>>> configuration files here. Maybe this can help another users with the same
>>>>> problem!
>>>>>
>>>>> Thanks again!!!
>>>>>
>>>>>
>>>>>
>>>>> *Bruno Emer*
>>>>>
>>>>> Mobile: +55 11 96540-0044
>>>>> email: brunoemer at gmail.com
>>>>> <https://www.facebook.com/bruno.emer.5>
>>>>> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
>>>>> <https://twitter.com/brunoemer_>
>>>>> <https://www.flickr.com/photos/122070309@N03/>
>>>>> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>>>>>
>>>>> 2014-09-17 9:13 GMT-03:00 Bruno Emer <brunoemer at gmail.com>:
>>>>>
>>>>> Hello!
>>>>>>
>>>>>> I am relatively new to Kamailio and I'm trying to create a new
>>>>>> enviroment using it in my company. I am thinking about use Amazon to host
>>>>>> the servers and use OpsWorks to automatically escalate then if necessary.
>>>>>> To accomplish this, my idea is to separate the servers, using one dedicated
>>>>>> server to run as WebSocket, one to run as proxy and one as a Registrar.
>>>>>> I'll be using just one database to store informations to all of my servers.
>>>>>> With this, if I need more resources later, I can just create new servers
>>>>>> with the specific roles (WebSockets, Proxy, Registrar).
>>>>>>
>>>>>> By now, the idea is clear, but the point is that I don't know how to
>>>>>> separate the WebSockets server from the proxy server. Actually, I can do
>>>>>> this, but when I have one agent using a regular softphone and one agent
>>>>>> using WebSockets (with JSSIP) they are not able to establish a session if
>>>>>> the softphone user starts it. Now, I want to know if is there a way to use
>>>>>> two websockets servers, register users using both of then and start
>>>>>> sessions between then, with a separated proxy and registrar.
>>>>>>
>>>>>> Has anyone done this before? Is possible to use kamailio like this?
>>>>>>
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>>
>>>>>>
>>>>>> *Bruno Emer*
>>>>>>
>>>>>> Mobile: +55 11 96540-0044
>>>>>> email: brunoemer at gmail.com
>>>>>> <https://www.facebook.com/bruno.emer.5>
>>>>>> <https://www.linkedin.com/profile/view?id=86461237&trk=spm_pic>
>>>>>> <https://twitter.com/brunoemer_>
>>>>>> <https://www.flickr.com/photos/122070309@N03/>
>>>>>> <http://google.com/+BrunoEmer> <http://instagram.com/brunoemer_>
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20140924/cf3c8f58/attachment.html>
More information about the sr-users
mailing list