sr-users November 2020

sr-users@lists.kamailio.org

52 participants
65 discussions

Re: [SR-Users] Proxy configuration that exit dialog afer INVITE -> OK
by Yufei Tao 07 Nov '20

07 Nov '20

Hi, Here's an example kamailio.cfg that uses record_route so in-dialog requests will go through the Kamailio proxy: https://github.com/kamailio/kamailio/blob/master/etc/kamailio.cfg There are many other example cfg files: https://github.com/kamailio/kamailio/tree/master/misc/examples Any server that wants to see the in-dialog messages needs to add itself to the record route list when receiving the initial INVITE for example. If a server is not in the list of record routes, then in-dialog requests will not be sent to the server. Headers that are most important in terms of routing are R-URI, Route, Record-Route, Contact, Via. Via header is for routing responses, while Record-Route is for in-dialog requests. I've put a few tips and some resources here about starting with Kamailio, which hopefully may help you a bit: http://tao-communications-ltd.simplesite.com/447576389 Cheers, Yufei >* Message: 7 *>* Date: Thu, 5 Nov 2020 12:26:16 +0200 *>* From: "Adrian Tabacioiu" <Adi.Tabacioiu at c-s.ro <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>> *>* To: sr-users at lists.kamailio.org <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> *>* Subject: [SR-Users] Proxy configuration that exit dialog afer INVITE *>* -> OK *>* Message-ID: <7449102a9f3dbe38b6dba753d1cffcd8.squirrel at mail.c-s.ro <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>> *>* Content-Type: text/plain;charset=iso-8859-1 *>>>* Hello all, *>>* Am I new in the usage of kamailio, sorry if I ask somehow something simple *>* or terribly wrong . *>>* I need to test a configuration of Kamailio which exit the dialog between *>* UA after the first OK (that means it will not receive the following ACK, *>* BYE). *>>* I understand that in theory this is possible in two configuration types: *>* - no Record Route header *>* - or stateless proxy *>>* First question: *>* Am I correct with the choices above? *>* Can I find example configuration for this two modes ? *>>* Question 2: *>* two or more proxy should be inter-connected, removing the Record Route *>* header would interfere with proxy routing ? (should not the "Via" *>* information be sufficient?) *>>* Thank you in advance for help. *>>* Best regards, *>* Adrian Tabacioiu *>

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Kamailio dump configuration and exit?
by Brandon Armstead 07 Nov '20

07 Nov '20

Is there a similar hook to make kamailio dump its current configuration it is reading including ... included files, i.e. similar to nginx -T root@main:/home/brandon# nginx -h nginx version: nginx/1.14.2 Usage: nginx [-?hvVtTq] [-s signal] [-c filename] [-p prefix] [-g directives] Options: -?,-h : this help -v : show version and exit -V : show version and configure options then exit -t : test configuration and exit -T : test configuration, dump it and exit -q : suppress non-error messages during configuration testing -s signal : send signal to a master process: stop, quit, reopen, reload -p prefix : set prefix path (default: /usr/share/nginx/) -c filename : set configuration file (default: /etc/nginx/nginx.conf) -g directives : set global directives out of configuration file Thanks for your time in advance!

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send_reply() related feature request
by Juha Heinanen 06 Nov '20

06 Nov '20

Many times (especially when there is a hacking attempt) I want to close TCP or TLS session after sending reply. So, for example, I write: set_reply_close(); send_reply("403", "Forbidden"); It would be more convenient if these two calls could be combined into one, for example: send_reply_and_close("403", "Forbidden"); -- Juha

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Re: [SR-Users] sr-users Digest, Vol 186, Issue 5
by Yufei Tao 05 Nov '20

05 Nov '20

Hi, Here's an example kamailio.cfg that uses record_route so in-dialog requests will go through the Kamailio proxy: https://github.com/kamailio/kamailio/blob/master/etc/kamailio.cfg There are many other example cfg files: https://github.com/kamailio/kamailio/tree/master/misc/examples Any server that wants to see the in-dialog messages needs to add itself to the record route list when receiving the initial INVITE for example. If a server is not in the list of record routes, then in-dialog requests will not be sent to the server. Headers that are most important in terms of routing are R-URI, Route, Record-Route, Contact, Via. Via header is for routing responses, while Record-Route is for in-dialog requests. Cheers, Yufei > Message: 7 > Date: Thu, 5 Nov 2020 12:26:16 +0200 > From: "Adrian Tabacioiu" <Adi.Tabacioiu(a)c-s.ro> > To: sr-users(a)lists.kamailio.org > Subject: [SR-Users] Proxy configuration that exit dialog afer INVITE > -> OK > Message-ID: <7449102a9f3dbe38b6dba753d1cffcd8.squirrel(a)mail.c-s.ro> > Content-Type: text/plain;charset=iso-8859-1 > > > Hello all, > > Am I new in the usage of kamailio, sorry if I ask somehow something simple > or terribly wrong . > > I need to test a configuration of Kamailio which exit the dialog between > UA after the first OK (that means it will not receive the following ACK, > BYE). > > I understand that in theory this is possible in two configuration types: > - no Record Route header > - or stateless proxy > > First question: > Am I correct with the choices above? > Can I find example configuration for this two modes ? > > Question 2: > two or more proxy should be inter-connected, removing the Record Route > header would interfere with proxy routing ? (should not the "Via" > information be sufficient?) > > Thank you in advance for help. > > Best regards, > Adrian Tabacioiu > >

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How to Add Customer Table During Installation
by me.projects＠yahoo.com 05 Nov '20

05 Nov '20

Hi, I want add some custom Table Creation during installation of Kamailio. I want to add my Custom Table during the execution of kamdbctl create command. Currently I am adding my script in share/kamailio/mysql/auth_db-create.sql Thanks,

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tsilo - failure to add branches (-1)
by Jurijs Ivolga 05 Nov '20

05 Nov '20

Hi, I have several Kamailio proxies - loadbalancer which is used as TLS offload and Authorization server and behind registrar servers. In this case I can't make tsilo work on the registrar server. I'm always getting: "tm [t_append_branches.c:172]: t_append_branches(): failure to add branches (-1)" If I use just one Kamailio which is used as Authorization and Registrar server then tsilo works as expected. Looks like kamailio where I run ts_append tries to connect to UAC directly and not through Loadbalancer. Any ideas? How can I troubleshoot this? Thank you! Jurijs

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Proxy configuration that exit dialog afer INVITE -> OK
by Adrian Tabacioiu 05 Nov '20

05 Nov '20

Hello all, Am I new in the usage of kamailio, sorry if I ask somehow something simple or terribly wrong . I need to test a configuration of Kamailio which exit the dialog between UA after the first OK (that means it will not receive the following ACK, BYE). I understand that in theory this is possible in two configuration types: - no Record Route header - or stateless proxy First question: Am I correct with the choices above? Can I find example configuration for this two modes ? Question 2: two or more proxy should be inter-connected, removing the Record Route header would interfere with proxy routing ? (should not the "Via" information be sufficient?) Thank you in advance for help. Best regards, Adrian Tabacioiu

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Kamailio in VMware with Fault Tolerance on
by Patrick Wakano 03 Nov '20

03 Nov '20

Hello list, Hope you are all good! Recently, the issue https://github.com/kamailio/kamailio/issues/2535 has been investigated and the utilization of the feature vsphere Fault Tolerance is linked as a source of network latency and probably CPU allocation latency. This increases the chances of the mentioned issue to happen. So I would just like to ask if anyone out there is using Kamilio in a VMware environment with Fault Tolerance on? How is the experience? Kind regards, Patrick Wakano

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Re: [SR-Users] htable + event_routes + mod-init + htable:expired
by Brandon Armstead 03 Nov '20

03 Nov '20

Nov 2 21:13:28 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_EXPIRED, lets retrieve a new one Nov 2 21:13:28 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_RECEIVED, {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzUxNjA4LCJleHAiOjE2MDQzNTUyMDgsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.sUQImDqDfE-xdA1SQ-7I5TnFMZaPh8WB2c-S-ut1hog","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604351608,"exp":1604355208,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" brandon(a)cryy.com "},"source":{"address":"34.94.123.121"}},"signature":"sUQImDqDfE-xdA1SQ-7I5TnFMZaPh8WB2c-S-ut1hog"}}} Nov 2 21:13:28 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_TIME, 1604351608 root@main:/etc/kamailio# kamcmd htable.dump server { entry: 11 size: 1 slot: { { name: auth::token value: {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzUxNjA4LCJleHAiOjE2MDQzNTUyMDgsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.sUQImDqDfE-xdA1SQ-7I5TnFMZaPh8WB2c-S-ut1hog","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604351608,"exp":1604355208,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" brandon(a)cryy.com "},"source":{"address":"34.94.123.121"}},"signature":"sUQImDqDfE-xdA1SQ-7I5TnFMZaPh8WB2c-S-ut1hog"}}} type: str } } } Nov 2 21:13:48 main kamailio[1334]: INFO: <script>: AUTH_TOKEN_EXPIRED, lets retrieve a new one Nov 2 21:13:48 main kamailio[1334]: INFO: <script>: AUTH_TOKEN_RECEIVED, {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzUxNjI4LCJleHAiOjE2MDQzNTUyMjgsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.stW5JzPR-Gz3oVvQEb1wxF7I0GcZ1KjkkQhinHGEivQ","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604351628,"exp":1604355228,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" brandon(a)cryy.com "},"source":{"address":"34.94.123.121"}},"signature":"stW5JzPR-Gz3oVvQEb1wxF7I0GcZ1KjkkQhinHGEivQ"}}} Nov 2 21:13:48 main kamailio[1334]: INFO: <script>: AUTH_TOKEN_TIME, 1604351628 root@main:/etc/kamailio# kamcmd htable.dump server { entry: 0 size: 1 slot: { { name: auth::time value: 1604351628 type: int } } } Nov 2 21:14:08 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_EXPIRED, lets retrieve a new one Nov 2 21:14:08 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_RECEIVED, {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzUxNjQ4LCJleHAiOjE2MDQzNTUyNDgsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.P52y8GIkL2FEeT51WbYicjIdjdWp-1FXpIRPLHFmlw4","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604351648,"exp":1604355248,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" brandon(a)cryy.com "},"source":{"address":"34.94.123.121"}},"signature":"P52y8GIkL2FEeT51WbYicjIdjdWp-1FXpIRPLHFmlw4"}}} Nov 2 21:14:08 main kamailio[1331]: INFO: <script>: AUTH_TOKEN_TIME, 1604351648 root@main:/etc/kamailio# kamcmd htable.dump server { entry: 11 size: 1 slot: { { name: auth::token value: {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzUxNjQ4LCJleHAiOjE2MDQzNTUyNDgsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.P52y8GIkL2FEeT51WbYicjIdjdWp-1FXpIRPLHFmlw4","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604351648,"exp":1604355248,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" brandon(a)cryy.com "},"source":{"address":"34.94.123.121"}},"signature":"P52y8GIkL2FEeT51WbYicjIdjdWp-1FXpIRPLHFmlw4"}}} type: str } } } On Mon, Nov 2, 2020 at 12:44 PM Brandon Armstead <brandon(a)cryy.com> wrote: > Also to add one more thing, I added a third static variable into the mix > to test when using the "bad config" just setting server=>auth::name to > "brandon" and introducing the 3rd variable seems to just make kamailio hang > when doing kamcmd htable.dump server <---- (no results returned). > > On Mon, Nov 2, 2020 at 12:41 PM Brandon Armstead <brandon(a)cryy.com> wrote: > >> Daniel, >> >> In short kamcmd does not reflect the value set in $sht(server=>auth >> ::token) >> >> It alternates between being set and not being set (reflecting in kamcmd >> htable.dump >> >> root@main:/etc/kamailio# kamcmd htable.dump server >> >> { >> >> entry: 11 >> >> size: 1 >> >> slot: { >> >> { >> >> name: auth::token >> >> value: >> {"data":{"token":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJDUllZIiwiaWF0IjoxNjA0MzQ2NzgzLCJleHAiOjE2MDQzNTAzODMsIm1ldGhvZCI6InBvc3Q6YXV0aDp0b2tlbiIsImFjY291bnQiOnsiaWQiOiIxIiwiZmlyc3RuYW1lIjoiVGVzdCIsImxhc3RuYW1lIjoiQXJtc3RlYWQiLCJlbWFpbCI6ImJyYW5kb25AY3J5eS5jb20ifSwic291cmNlIjp7ImFkZHJlc3MiOiIzNC45NC4xMjMuMTIxIn19.aFGWqQg31oNnw10XfZ61Xm5Jncvt7RoNri2ZuDJ6yLQ","header":{"alg":"HS256","typ":"JWT"},"payload":{"iss":"CRYY","iat":1604346783,"exp":1604350383,"method":"post:auth:token","account":{"id":"1","firstname":"Test","lastname":"Armstead","email":" >> brandon(a)cryy.com >> "},"source":{"address":"34.94.123.121"}},"signature":"aFGWqQg31oNnw10XfZ61Xm5Jncvt7RoNri2ZuDJ6yLQ"}}} >> >> type: str >> >> } >> >> } >> >> } >> >> >> In the kamailio logs it always shows AUTH_TOKEN_RECEIVED (correctly, with >> the correct auth token), kamcmd dump of htable alternates between execution >> of this route: htable:expired:server >> >> Exec 1: >> >> auth::time => [timestamp] >> >> Exec 2: >> >> auth::token => token >> >> Exec 3: >> >> auth::time => [timestamp] >> >> So on and so forth, [ kamcmd htable.dump server ] it does not correctly >> hold both $sht(server=>auth::time) and $sht(server=>auth::token) like it >> should, despite kamailio logs showing the HTTP_AUTH_TOKEN received message >> with the correct auth token (100% of the time). >> >> It's almost like there is a race condition when using the modules >> http_client_query in both init and expired event route. >> >> When I changed it to the resolved code block above separating the calls >> and introducing http_async_client inside htable:expired:server >> >> The result is 100% of the time auth token exists correctly, just like the >> logs 100% of the time show the auth token received regardless of >> event_route implementation. >> >> So somewhere somehow the problematic config causes the hash table to not >> store HTTP_AUTH_TOKEN it receives and logs. >> >

2 1

http_async_client
by Brandon Armstead 03 Nov '20

03 Nov '20

kamailio 5.5.0-dev3 I'm unsure if this is expected behavior, so thought I would ask... When using http_async_query("URI", "ROUTENAME") request_route { route(AUTH); # this does not get executed below route(AUTH) xinfo("[$ci][$rm] we hit this line"); } route[AUTH] { t_newtran(); http_async_query("URI", "ROUTENAME"); } route[ROUTENAME] { # do stuff here to check authentication and return if(auth + registration) { append_hf("Path...."); msg_apply_changes(); # this fails and errors out about incorrect route # ^ invalid usage - not in request route or a reply save("location"); } if(auth + invite) { # route to pstn } } Expected behavior: to be able to obtain some processing / information gathering about authentication with the call and additional information possibly and return to normal routing. As-is now I've to move the actions all into ROUTENAME for kamailio to continue processing, it does not go back to request_route { }. # this does not get executed below route(AUTH) Is this expected behavior, or am I missing something? If I do catch route(AUTH) with a hash table and prevent its execution after first run, the avp's from the transaction created are not available in request_route that were set in ROUTENAME.

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sr-users November 2020