sr-users March 2020

sr-users@lists.kamailio.org

64 participants
83 discussions

nathelper without usrloc
by Daniel W. Graham 18 May '20

18 May '20

I’ve been missing with this for a while and seem to be missing something. Any suggestions on what is missing here? Trying to use set_contact_alias() and handle_ruri_alias() from nathelper module and nat_keepalive from nat_traversal module, without registrar. I had register keepalive working, that has since broke. When register keepalive was working, I was able to place call in either direction but ACK and BYE was not being routed past kamailio. Registrations are forwarded to the PBX using add_path() and is working. Also not included below is the routing to the PBX, that is just setting $du and t_relay, and is also working. Topology is: UA1 -> NAT -> kamailio -> PBX -> UA2 Using default config file as the example, modified with above changes. I also removed RTP config as that is a non-issue. request_route { …… # FLAG MESSAGES FROM PBX setflag(FLT_PBX); route(NATDETECT); …… route[NATDETECT] { if (nat_uac_test("19")) { force_rport(); set_contact_alias(); nat_keepalive(); } return; } route[WITHINDLG] { if (!has_totag()) return; if (loose_route()) { route(DLGURI); } else if ( is_method("ACK") ) { route(NATMANAGE); } else if ( is_method("NOTIFY") ) { record_route(); } route(RELAY); exit; } if (is_method("SUBSCRIBE") && uri == myself) { route(PRESENCE); exit; } if ( is_method("ACK") ) { if ( t_check_trans() ) { route(RELAY); exit; } else { exit; } } sl_send_reply("404","Not here"); exit; } route[NATMANAGE] { if(isflagset(FLT_PBX)) { handle_ruri_alias(); } if(!isflagset(FLT_PBX)) { set_contact_alias(); } return; } route[DLGURI] { if(!isdsturiset()) { handle_ruri_alias(); } return; } branch_route[MANAGE_BRANCH] { route(NATMANAGE); } onreply_route[MANAGE_REPLY] { if(status=~"[12][0-9][0-9]") { route(NATMANAGE); } } failure_route[MANAGE_FAILURE] { route(NATMANAGE); if (t_is_canceled()) exit; -dan

4 19

db_redis and PUA
by Carsten Bock 08 May '20

08 May '20

Hi, quick question: Did anyone ever attempt to use PUA with the new db_redis? If yes, could someone share the definition for this? Thanks, Carsten -- Carsten Bock I CTO & Founder ng-voice GmbH Trostbrücke 1 I 20457 Hamburg I Germany T +49 40 524 75 93-40 | M +49 179 2021244 I www.ng-voice.com Registry Office at Local Court Hamburg, HRB 120189 Managing Directors: Dr. David Bachmann, Carsten Bock

3 2

nat_uac_test(8)
by Sergiu Pojoga 24 Apr '20

24 Apr '20

When receiving an INVITE over a specific LTE carrier, I'm seeing 'c=IN IP4 192.0.0.4' in SDP, which isn't technically a RFC1918 or RFC6598 IP address and thus nat_uac_test(8) fails. What elegant workaround can be done to catch such specific cases? Thanks.

5 11

doubt about xflags
by David Escartin 22 Apr '20

22 Apr '20

Dear all one quick question, reading the module corex doc, seems that xflag are message(transaction) flags. But I made a test and seems for some reason the flag is not seeing activated at the onreply_route, when it's activated on the request route. Seemed more like a script flag behaviour. Maybe I'm missing something? thanks a lot and regards david

2 8

[kamailio][webrtc issue]
by Bilal Abbasi 07 Apr '20

07 Apr '20

Hi Users, I am new to kamailio, and trying to implement webrtc on kamailio, i am getting following error when i try to login from tryjssip page. Mar 29 21:11:15 kamailio kamailio[20570]: ERROR: <core> [core/tcp_read.c:1535]: tcp_read_req(): bad request, state=7, error=4 buf:#012GET / HTTP/1.1#015#012Host: kamailio..com:7443#015#012Connection: Upgrade#015#012Pragma: no-cache#015#012Cache-Control: no-cache#015#012User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36#015#012Upgrade: websocket#015#012Origin: https://tryit.jssip.net#015#012Sec-WebSocket-Version: 13#015#012Accept-Encoding: gzip, deflate, br#015#012Accept-Language: en-US,en;q=0.9,ur;q=0.8#015#012Sec-WebSocket-Key: 88fVCzdsvQPCrwV7gMrWaA==#015#012Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits#015#012Sec-WebSocket-Protocol: sip#015#012#015#012#012parsed:#012GET / HTTP/1.1#015#012Host: kamailio..com:7443#015#012Connection: Upgrade#015#012Pragma: no-cache#015#012Cache-Control: no-cache#015#012User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36#015#012Upgrade: websocket#015#012Origin: https://tryit.jssip.net#015#012Sec-WebSocket-Version: 13#015#012Accept-Encoding: gzip, deflate, br#015#012Accept-Language: en-US,en;q=0.9,ur;q=0.8#015#012Sec-WebSocket-Key: 88fVCzdsvQPCrwV7gMrWaA==#015#012Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits#015#012Sec-WebSocket-Protocol: sip I can see following error on chrome console. WebSocket connection to 'wss://kamailio..com:7443/' failed: Connection closed before receiving a handshake response I tried to set tcp_accept_no_cl to value 'no' and this did not helped me either. Can someone please help me with the issue Regards Bilal Abbasi

3 7

Problem with max tcp connections
by Jose Fco. Irles Durá 06 Apr '20

06 Apr '20

Hi I have a kamailio 5.1.2 as load balancer and registration offloading, but I have a problem with the max tcp connections that it can handle. I suspect that is a linux limit, but I don't find the reason or config. When that limit arrives, I can't connect to kamailio and I receive "Connection reset by peer", but I can't view any error message in the logs. If I check the connections in kamailio, I view that it have "free" connections: # kamctl kamcmd core.tcp_info { readers: 8 max_connections: 4096 max_tls_connections: 2048 opened_connections: 2655 opened_tls_connections: 0 write_queued_bytes: 0 } I have this configs in kamailio.conf (related to tcp) disable_tcp=no tcp_connection_lifetime=3610 tcp_connect_timeout=5 tcp_crlf_ping=yes tcp_accept_aliases=no tcp_keepalive=yes tcp_keepidle=5 tcp_rd_buf_size=65536 tcp_conn_wq_max=131072 mlock_pages=yes shm_force_alloc=yes tcp_max_connections=4096 The shm memory to 256 and the pkg memory to 32. And, following this doc: https://github.com/kamailio/kamailio/blob/master/doc/tutorials/tcp_tunning.… I have setted this values: net.ipv4.ip_local_port_range = 1024 65535 net.core.somaxconn = 65535 net.core.netdev_max_backlog = 182757 Also, I had checked the limits for the main process pid: Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size unlimited unlimited bytes Max resident set unlimited unlimited bytes Max processes unlimited unlimited processes Max open files 1048576 1048576 files Max locked memory 16777216 16777216 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 386297 386297 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us The service is running inside a lxc container, without any resource limit, connected to the outside word throught macvlan interface. Where can I find problem source? Best regards

4 13

need help with RTPProxy in bridged mode
by Grant Bagdasarian 04 Apr '20

04 Apr '20

Hello, I'm using RTPproxy for the first time in bridged mode and I can't get kamailio/rtpproxy to rewrite the c parameter to the correct public ip address of kamailio. The setup is as following: Carrier ------[fiber]------ Kamailio ---------[lan]--------- Freeswitch Kamailio is listening on two interfaces: 1) Private: 172.0.0.1 2) Public: 192.168.0.1 (since we have a dedicated fiber with our carrier, this is its public address) Freeswitch is listening on: 1) 172.0.0.2 Carrier is on: 1) 10.0.0.1 I've started an rtpproxy instance on the Kamailio box using: rtpproxy -s udp:127.0.0.1:7721 -u rtpproxy rtpproxy -p /var/run/rtpproxy/rtpproxy.pid -l 192.168.0.1 172.0.0.1 I've played around with rtpproxy_manage() and the various flags (ie, ei), but I can't get kamailio to set the correct public IP when the 200 OK has to be sent back to the carrier. It always sets it to its private address, instead of its public address. I'm using Kamailio 4.2 with sippy/rtpproxy 2.0. Could someone please point me into the right direction? Thanks! Grant

4 8

[ot] lightweight sip app for auto-answering with play file and echo mode
by Daniel-Constantin Mierla 01 Apr '20

01 Apr '20

Hello, wondering if anyone here is aware of a lightweight sip app that can answer a call, play some file and/or do echo mode, mainly targeted at using it for basic sip routing and call testing. Of course I know that Asterisk and FreeSwitch (or even SEMS) can do that, but they have many dependencies, requiring quite some resources to run them, so I thought maybe someone here figured out different solutions, eventually cli based apps like pjsua or baresip. GUI apps for Linux are also fine if they can be configured for such behaviour. Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda

7 18

Re: [SR-Users] Use topos module to hide contact in OPTIONS request
by Enzo 01 Apr '20

01 Apr '20

2 1

Dialog: dlg_var and multi-branch call
by SamyGo 31 Mar '20

31 Mar '20

Hi All, Just curious to ask as how to save $dlg_var for a multi-leg/branched call. When I call a subscriber with multiple Contacts, and one branch answer while rest are CANCEL'd from that point onward I've seen that the dialog and its variables disappear from Kamailio memory and DB.Is this how its intended to be ? Here are the relevant debug line: DEBUG: dialog [dlg_hash.c:1266]: next_state_dlg(): dialog 0x7f7c1461e2e8 changed from state 2 to state 5, due event 4 (ref 2) DEBUG: dialog [dlg_handlers.c:574]: dlg_onreply(): dialog 0x7f7c1461e2e8 failed (negative reply) DEBUG: dialog [dlg_cb.c:271]: run_dlg_callbacks(): dialog=0x7f7c1461e2e8, type=4 DEBUG: dialog [dlg_handlers.c:1050]: dlg_set_tm_waitack(): registering TMCB to wait for negative ACK Best Regard, Sammy

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sr-users March 2020