Hi Ron,
thanks for the note. Ok, I see your point.I agree that the call is eventually terminated, but as there is no CDR generated, how do you handle CDR's, as openser never sends a 200 ok to the bye?
Andy
On 3/5/07, Ron Winacott ronw@somanetworks.com wrote:
Andy, I am not sure where your issue is (or I am missing it, which is most likely the case). The SST module is to protect the OpenSER server from memory/dialog leaks due to catastrophic AU failures. What I see in the dialog is a normal (abnormal) termination due to time out if the reINVITE/BYE. The sst timer in OpenSER did *not* fire. The AU (149) terminated the call because the reINVITE timed out (200 OK not seen) and sent a BYE. OpenSER seen the BYE and terminated the dialog. (as a normal termination)
Where SST comes into play is if both sides are killed, or the AU that agreed to send the reINVITE dies. The reINVITE is send at about 80% of the time interval (depending on the AU) and if the full 100% of the time interval passes, the SST interval timer will fire and OpenSER will "deem" the call as dead and release all local resources it is holding as its role as a proxy.
In your case, the AU(149) should timeout on the BYEs missing 200 OK and terminate the call. Because OpenSER is acting as a proxy and *not* as a B2B user agent, it cannot inject 200 OK's or BYEs into the dialog.
I currently use the SST module in conjunction with the dialog modules call backs into a proprietary OpenSER module (to SOMA) that cleans up other locally held resources in the radio network. It is needed because of the unreliability of the radio links.
As I stated above, if I am missing the point, please reply and I hope this helps to clear things up with the SST module.
ronw (karwin)
On Monday 05 March 2007 1:55 am, Andy Pyles wrote:
Hi,
I'm trying to understand how the SST handles the case of a UA that is off the network when the session timer expires.
I have the following configuration: x-lite has session timer support, so using that to test the module. min session timer is set to 91 seconds.
x-lite (149) - > openser --> x-lite ( 101) INVITE ---> -> INVITE <--100 trying 100 trying <----- <-180 ringing 180 ringing <-- <-200 ok 200 ok <--- ack ---> -->ack Call is setup at this point. I then remove the power supply from 101. some seconds later we see this:
INVITE -------> --> INVITE 100 trying <------ ...... ( no response from 101) <--- 408 timeout BYE ----------> .... Ok at this point openser never sends a 200 ok to the BYE.
From what I can see in the SST module, that it deletes the dialog.in
memory, but not sure how that will help here.
--- debug logs -- where the FIRST bye comes in from 149:
0(5526) SIP Request: 0(5526) method: <BYE> 0(5526) uri: sip:101@192.168.0.104:5061 0(5526) version: <SIP/2.0> 0(5526) parse_headers: flags=2 0(5526) Found param type 232, <branch> = <z9hG4bK-d87543-8f727a53ca51673e-1--d87543->; state=6 0(5526) Found param type 235, <rport> = <n/a>; state=17 0(5526) end of header reached, state=5 0(5526) parse_headers: Via found, flags=2 0(5526) parse_headers: this is the first via 0(5526) After parse_msg... 0(5526) preparing to run routing scripts... 0(5526) parse_headers: flags=100 0(5526) DEBUG:maxfwd:is_maxfwd_present: value = 70 0(5526) parse_headers: flags=10 0(5526) DEBUG: add_param: tag=faea2a83cd5fd6c1 0(5526) DEBUG:parse_to:end of header reached, state=29 0(5526) DBUG:parse_to: display={"101"}, ruri={sip:101@192.168.0.101} 0(5526) DEBUG: get_hdr_field: <To> [51]; uri=[sip:101@192.168.0.101] 0(5526) DEBUG: to body ["101"sip:101@192.168.0.101] 0(5526) DEBUG: add_param: tag=5077431e 0(5526) DEBUG:parse_to:end of header reached, state=29 0(5526) DBUG:parse_to: display={"149"}, ruri={sip:149@192.168.0.101} 0(5526) parse_headers: flags=200 0(5526) is_preloaded: No 0(5526) grep_sock_info - checking if host==us: 13==13 && [192.168.0.104] == [192.168.0.101] 0(5526) grep_sock_info - checking if port 5060 matches port 5061 0(5526) grep_sock_info - checking if host==us: 13==13 && [192.168.0.104] == [192.168.0.101] 0(5526) grep_sock_info - checking if port 5060 matches port 5061 0(5526) DEBUG:check_self: host != me 0(5526) grep_sock_info - checking if host==us: 13==13 && [192.168.0.101] == [192.168.0.101] 0(5526) grep_sock_info - checking if port 5060 matches port 5060 0(5526) after_loose: Topmost route URI: 'sip:192.168.0.101;lr;ftag=5077431e;did=5ff.8e4f3775' is me 0(5526) parse_headers: flags=200 0(5526) get_hdr_field: cseq <CSeq>: <3> <BYE> 0(5526) DEBUG: get_hdr_body : content_length=0 0(5526) found end of header 0(5526) find_next_route: No next Route HF found 0(5526) after_loose: No next URI found 0(5526) DBG:rr:run_rr_callbacks: callback id 0 entered with <lr;ftag=5077431e;did=5ff.8e4f3775> 0(5526) DEBUG:dialog:dlg_onroute: route param is '5ff.8e4f3775' (len=12) 0(5526) DEBUG:dialog:lookup_dlg: dialog id=1467217128 found on entry 4085 0(5526) DEBUG:dialog:run_create_callbacks: dialog=0xb5c65280, type=16 0(5526) DEBUG:sst_handlers.c:sst_dialog_terminate_CB:403: Terminating DID 0xb5c65280 session 0(5526) DEBUG:sst_handlers.c:sst_dialog_terminate_CB:410: Freeing the sst_info_t from dialog 0xb5c65280 0(5526) DBUG:dialog:unref_dlg: unref dlg 0xb5c65280 with 2 (delete=1)-> 0 0(5526) DBUG:dialog:destroy_dlg: destroing dialog 0xb5c65280 0(5526) loose_route() succeeded - M=BYE RURI=sip:101@192.168.0.104:5061 F=sip:149@192.168.0.101 T=sip:101@192.168.0.101 IP=192.168.0.102 ID=NTUzNzA5NWNjYmM5YWQ2MjQxYzgzZDdkZTRlMmQwODk. 0(5526) ERROR:dialog:dlg_status: res->ri = 5 0(5526) comp_scriptvar: int 20 : 5 / 0 0(5526) DEBUG: t_newtran: msg id=8 , global msg id=7 , T on entrance=0xffffffff 0(5526) parse_headers: flags=ffffffffffffffff 0(5526) parse_headers: flags=78 0(5526) t_lookup_request: start searching: hash=10869, isACK=0 0(5526) DEBUG: RFC3261 transaction matching failed 0(5526) DEBUG: t_lookup_request: no transaction found 0(5526) DBG: trans=0xb5c67b00, callback type 1, id 1 entered 0(5526) DBG: trans=0xb5c67b00, callback type 1, id 0 entered 0(5526) parse_headers: flags=78 0(5526) DEBUG: mk_proxy: doing DNS lookup... 0(5526) check_via_address(192.168.0.102, 192.168.0.102, 0) 0(5526) DBG:check_against_rule_list: using list dns 0(5526) DEBUG:tm:set_timer: relative timeout is 500000 0(5526) DEBUG: add_to_tail_of_timer[4]: 0xb5c67c4c (61500000) 0(5526) DEBUG:tm:set_timer: relative timeout is 30 0(5526) DEBUG: add_to_tail_of_timer[0]: 0xb5c67c68 (91) 0(5526) DEBUG:tm:t_relay_to: new transaction fwd'ed 0(5526) DEBUG:tm:UNREF_UNSAFE: after is 0 0(5526) DEBUG:destroy_avp_list: destroying list (nil) 0(5526) receive_msg: cleaning up
thanks, Andy
Users mailing list Users@openser.org http://openser.org/cgi-bin/mailman/listinfo/users
-- Ron Winacott - SOMA Networks, Inc.
Chaos, panic and disorder...my work here is done.