sr-users February 2019

sr-users@lists.kamailio.org

78 participants
98 discussions

Re: [SR-Users] TM Module - Unfortunately error on sending to next hop occurred (477/TM)

by Ilie Soltanici

Hi, Looks that space comes from copy/paste or page formatting - in the log file there is no space within this variable. Thank's

5 years, 4 months

Detecting end of DNS failover in tm:branch-failure

by Ivan Ribakov

Hi all, I have a custom routing logic implemented in my module. This routing logic may return a list of 2 or more endpoints where INVITE should be attempted to be routed. Since endpoint URI can contain domain names, I’m also trying to take care of DNS resolution. Based on the documentation found in https://github.com/kamailio/kamailio/blob/master/doc/tutorials/dns.txt <https://github.com/kamailio/kamailio/blob/master/doc/tutorials/dns.txt> current DNS resolver/failover logic takes good care of RFC3263. To support switching between various endpoints returned by custom routing logic I have been using “tm:branch-failure” routing blocks. Problem I’m facing right now is that I am unable to distinguish between a DNS failover branch failure that has more SRV records to try and the “final” DNS failover branch failure (at which point I should be switching to another endpoint). I’ve tried monitoring $T_reply_code values, but it is “408” in both cases. Any ideas on how “final” and “non-final” DNS failover branch failures can be distinguished? Regards, Ivan

5 years, 4 months

Re: [SR-Users] Issue with UAC restore_mode when restore_dlg is enabled

by Daniel-Constantin Mierla

Can you check via rpc and looking at database tables if dialog record is there? Cheers, Daniel On Tue, 19 Feb 2019, 08:44 <jenus(a)cyberchaos.nl wrote: > Daniel, > > Yes the uac_replace_from is called from a branch route. > > Jan > > Daniel-Constantin Mierla schreef op 2019-02-19 08:26: > > I do not recall any relevant changes recently in this part of the code, > > so likely to be same result for 5.2. > > > > With restore_dlg set to 1, dialog variables are used for storing the > > headers. When do you call uac_replace_from()/_to()? Is it in a > > branch_route? > > > > Cheers, > > Daniel > > > > On 19.02.19 08:07, jenus(a)cyberchaos.nl wrote: > >> Forgot to mention, i'm running kamailio 5.1.7, did not test yet with > >> the latest 5.2 release. > >> > >> Jan > >> > >> > >> jenus(a)cyberchaos.nl schreef op 2019-02-18 15:22: > >>> Hello, > >>> > >>> I'm running into a issue with restore_mode auto when i enable > >>> restore_dlg in the uac module. I have a feature where i reroute calls > >>> for a subscriber when it is offline. When routing calls to the > >>> subscriber i check the exit status of "lookup("location")" and > >>> re-route the call. This works fine. It seems to fail when i hit the > >>> failure route (subscriber has a usrloc entry but does not respond). > >>> In > >>> the failure route i append_branch and reroute the call. > >>> > >>> The rerouting works fine, but when i receive the ACK on the 200OK on > >>> the re-routed call the "restore" feature seems to fail and i end up > >>> with a header like: > >>> > >>> To: > >>> <sip:+<null>@voip-dev.domain.nl > >;tag=5B8ABC8A-5C6ABE83000EBF35-AB202700 > >>> in the ACK. > >>> > >>> If i disable restore_dlg feature from the UAC module it adds the > >>> vsf/vst to the Record-Route header and all works fine. > >>> > >>> Do i need to do something special when i create a new branch and use > >>> the restore_dlg feature? > >>> > >>> > >>> Thanks, > >>> > >>> Jan Hazenberg > >>> > >>> _______________________________________________ > >>> Kamailio (SER) - Users Mailing List > >>> sr-users(a)lists.kamailio.org > >>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > >> > >> > >> _______________________________________________ > >> Kamailio (SER) - Users Mailing List > >> sr-users(a)lists.kamailio.org > >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > >

5 years, 4 months

Issue with UAC restore_mode when restore_dlg is enabled

by jenus＠cyberchaos.nl

Hello, I'm running into a issue with restore_mode auto when i enable restore_dlg in the uac module. I have a feature where i reroute calls for a subscriber when it is offline. When routing calls to the subscriber i check the exit status of "lookup("location")" and re-route the call. This works fine. It seems to fail when i hit the failure route (subscriber has a usrloc entry but does not respond). In the failure route i append_branch and reroute the call. The rerouting works fine, but when i receive the ACK on the 200OK on the re-routed call the "restore" feature seems to fail and i end up with a header like: To: <sip:+<null>@voip-dev.domain.nl>;tag=5B8ABC8A-5C6ABE83000EBF35-AB202700 in the ACK. If i disable restore_dlg feature from the UAC module it adds the vsf/vst to the Record-Route header and all works fine. Do i need to do something special when i create a new branch and use the restore_dlg feature? Thanks, Jan Hazenberg

5 years, 4 months

Presence module with external MWI

by Trevor Peirce

Hello, Looking for pointers as to what I'm missing here. I'm using the presence module to allow UAs to subscribe to message-summary events. I can see the entries appearing in the active_watchers table and I see subscription renewals increment the cseq columns so I'm satisfied this part is working well. I'm having trouble finding out how to tell Kamailio about a change to the message-summary so that it can notify the watchers. The pua module seems to provide a way but it doesn't seem to work with the subscriptions set up by the presence module. The presence module itself does not seem to offer any RPCs capable of doing this. Appreciate any pointers! Thanks, -- Trevor Peirce AcroVoice Solutions Inc

5 years, 4 months

Integration with mobile oprators

by sina yazdanian

Dear Kamailio Technical team I’m Sina from a small software development company in Middle-East. We are interested in your product. For R&D research we need some documents about your product. Your support would be appreciated in case of sharing document. We need document about* SIP server integration with Mobile operator*. I would be grateful if you support me and the team to complete research. Best Regards Sina Yazdanian

5 years, 4 months

how to see banned address after rule it

by PICCORO McKAY Lenz

i configure rules for routing banned ip and i want to see where i can autdit this issues.. i mean where i can automatically define a cron setup that grep those logs definitios.. where are loggin those all? my rules are: define at begining of kamailio.cfg "#!WITH_ANTIFLOOD", later add: #!ifdef WITH_ANTIFLOOD loadmodule "htable.so" loadmodule "pike.so" modparam("pike", "sampling_time_unit", 2) modparam("pike", "reqs_density_per_unit", 16) modparam("pike", "remove_latency", 4) modparam("htable", "htable", "ipban=>size=8;autoexpire=300;") #!endif later routing definitions: route[REQINIT] { if(src_ip!=myself) { if($sht(ipban=>$si)!=$null) { xdbg("request from blocked IP - $rm from $fu (IP:$si:$sp)\n"); exit; } if (!pike_check_req()) { xlog("L_ALERT","ALERT: pike blocking $rm from $fu (IP:$si:$sp)\n"); $sht(ipban=>$si) = 1; exit; } } if($ua =~ "friendly-scanner|sipcli|VaxSIPUserAgent") { xlog("L_ALERT","ALERT: friendly canings from $fu (IP:$si:$sp)\n"); exit; } if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); exit; } if(is_method("OPTIONS") && uri==myself && $rU==$null) { sl_send_reply("200","Keepalive"); exit; } if(!sanity_check("1511", "7")) { xlog("Malformed SIP message from $si:$sp\n"); exit; } } Lenz McKAY Gerardo (PICCORO) http://qgqlochekone.blogspot.com

5 years, 4 months

Dispatcher No destinations available

by Cristian Livadaru

Hi, I have a Kamailio running as Load Balancer and it works great but since a couple of weeks I kept noticing 404s in Homer and when looked into it they came from Kamailio. ``` route[LOADBALANCE] { #ds_select_dst(destination_set, algorithm) function chooses the destination for the call. For this it can use a lot of algorithms. #Alg. 0 is the default one that does the the choosing over the call ID hash #Alg. 4 is a Round-Robin #Alg. 10 is the one that chooses the destination based on the minimum load of all destinations if(!ds_select_dst("1", "4")) { #if we are here that means no destination is available. We notify the user by 404 and exit the script. xlog("L_NOTICE", "No destination available!"); send_reply("404", "No destination"); exit; } xlog("L_NOTICE", "Routing call to <$ru> via <$du>\n"); #set the no_reply_recieved timeout to 2 second ... adjust the value to your need #note: The first value "0" is invite timeout .. we do not need to change it #This means that is the selected media server fails to respond within 2 seconds the failure_route "MANAGE_FAILURE" is called #note: this implies that ale the signaling from media servers on the way back to the user goes through the proxy as well t_set_fr(0,2000); t_on_failure("MANAGE_FAILURE"); return; } ``` The two asterisks behind it seem fine and I can’t really see why this started happening. Also I thing that returning 404 might be misleading, wouldn’t it be better if I would return 503 instead? I enabled debugging in Kamailio but can’t really seem to notice anything wrong here: ``` Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/udp_server.c:491]: udp_rcv_loop(): received on udp socket: (106/100/1104) [[INVITE sip:431230123@213.137.140.230:5060 SIP/2.0 0D 0A Via: SIP/2.0/UDP 196.27.235.76:5060;branch=z9h]] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:604]: parse_msg(): SIP Request: Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:606]: parse_msg(): method: <INVITE> Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:608]: parse_msg(): uri: <sip:431230123@213.137.140.230:5060> Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): version: <SIP/2.0> Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/parse_via.c:1303]: parse_via_param(): Found param type 232, <branch> = <z9hG4bK0080827005DD9C0D8E963B2EA293>; state=16 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header reached, state=5 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:492]: parse_headers(): Via found, flags=2 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:494]: parse_headers(): this is the first via Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=10 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:171]: get_hdr_field(): <To> [52]; uri=[sip:431230123@213.137.140.230] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:172]: get_hdr_field(): to body ["431230123" <sip:431230123@213.137.140.230> Feb 15 09:50:28 wlb kamailio[6659]: ] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:152]: get_hdr_field(): cseq <CSeq>: <36825> <INVITE> Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/receive.c:200]: receive_msg(): --- received sip message - request - call-id: [2610e00004f5-5c66843f-6400386f-2c1b8100-6c4782(a)127.0.0.1] - cseq: [36825 INVITE] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/receive.c:248]: receive_msg(): preparing to run routing scripts... Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/parse_addr_spec.c:185]: parse_to_param(): add param: tag=0080827005DD9C0D8E96C55CF6CD Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=29 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: siptrace [siptrace.c:507]: sip_trace_store_db(): database connection not initialized Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: siptrace [siptrace_hep.c:498]: pipport2su(): the port string is 5060 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: siptrace [siptrace_hep.c:498]: pipport2su(): the port string is 5060 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/proxy.c:264]: mk_proxy(): doing DNS lookup... Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: siptrace [siptrace_hep.c:302]: trace_send_hep2_duplicate(): setting up the socket_info Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) NOTICE: <script>: Tracing 6(6668) DEBUG: maxfwd [mf_funcs.c:74]: is_maxfwd_present(): value = 70 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:183]: get_hdr_field(): content_length=355 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/parser/msg_parser.c:89]: get_hdr_field(): found end of header Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: sanity [sanity_mod.c:256]: w_sanity_check(): sanity checks result: 1 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/socket_info.c:559]: grep_sock_info(): checking if host==us: 14==9 && [213.137.140.230] == [127.0.0.1] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/socket_info.c:566]: grep_sock_info(): checking if port 5060 (advertise 0) matches port 5060 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/socket_info.c:559]: grep_sock_info(): checking if host==us: 14==14 && [213.137.140.230] == [213.137.140.230] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: <core> [core/socket_info.c:566]: grep_sock_info(): checking if port 5060 (advertise 0) matches port 5060 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) NOTICE: <script>: OPTIONS from 196.27.235.76:5060 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: siputils [checks.c:120]: has_totag(): no totag Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: tm [t_lookup.c:1018]: t_check_msg(): msg (0x7f7e7edd3be8) id=6845 global id=6844 T start=(nil) Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: tm [t_lookup.c:476]: t_lookup_request(): start searching: hash=29308, isACK=0 Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: tm [t_lookup.c:435]: matching_3261(): RFC3261 transaction matching failed Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: tm [t_lookup.c:659]: t_lookup_request(): no transaction found Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: tm [t_lookup.c:1087]: t_check_msg(): msg (0x7f7e7edd3be8) id=6845 global id=6845 T end=(nil) Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: rr [loose.c:1209]: is_direction(): param ftag not found Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: dispatcher [dispatch.c:1832]: ds_select_dst_limit(): set [1] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) DEBUG: dispatcher [dispatch.c:1935]: ds_select_dst_limit(): alg hash [1] Feb 15 09:50:28 wlb kamailio[6659]: 6(6668) NOTICE: <script>: No destination available! 6(6668) DEBUG: sl [sl.c:282]: send_reply(): reply in stateless mode (sl) ``` My kamailio.cfg ``` #!KAMAILIO # # sample config file for dispatcher module # - load balancing of VoIP calls with round robin # - no TPC listening # - don't dispatch REGISTER and presence requests # # Kamailio (OpenSER) SIP Server v3.2 # - web: http://www.kamailio.org # - git: http://sip-router.org # # Direct your questions about this file to: sr-users(a)lists.sip-router.org # # Refer to the Core CookBook at http://www.kamailio.org/dokuwiki/doku.php # for an explanation of possible statements, functions and parameters. # # Several features can be enabled using '#!define WITH_FEATURE' directives: # # *** To run in debug mode: # - define WITH_DEBUG # ####### Global Parameters ######### #!define WITH_HOMER #!define WITH_DEBUG #!ifdef WITH_DEBUG debug=4 log_stderror=yes #!else debug=2 log_stderror=no #!endif memdbg=5 memlog=5 log_facility=LOG_LOCAL0 fork=yes children=4 /* comment the next line to enable TCP */ disable_tcp=yes /* uncomment the next line to disable the auto discovery of local aliases based on revers DNS on IPs (default on) */ auto_aliases=yes /* add local domain aliases */ port=5060 /* uncomment and configure the following line if you want Kamailio to bind on a specific interface/port/proto (default bind on all available) */ # listen=udp:127.0.0.1:5060 sip_warning=no ####### Modules Section ######## #set module path mpath="/usr/lib/x86_64-linux-gnu/kamailio/modules/" # loadmodule "db_mysql.so" # loadmodule "mi_fifo.so" loadmodule "jsonrpcs.so" loadmodule "kex.so" loadmodule "corex.so" loadmodule "tm.so" loadmodule "tmx.so" loadmodule "sl.so" loadmodule "rr.so" loadmodule "pv.so" loadmodule "maxfwd.so" loadmodule "usrloc.so" loadmodule "registrar.so" loadmodule "textops.so" loadmodule "siputils.so" loadmodule "xlog.so" loadmodule "sanity.so" loadmodule "ctl.so" loadmodule "cfg_rpc.so" loadmodule "acc.so" loadmodule "counters.so" loadmodule "dispatcher.so" #!ifdef WITH_HOMER loadmodule "siptrace.so" #!endif #loadmodule "kex.so" #loadmodule "tm.so" #loadmodule "tmx.so" #loadmodule "sl.so" #loadmodule "rr.so" #loadmodule "pv.so" #loadmodule "maxfwd.so" #loadmodule "textops.so" #loadmodule "siputils.so" #loadmodule "xlog.so" #loadmodule "sanity.so" ## loadmodule "ctl.so" #loadmodule "mi_rpc.so" #loadmodule "acc.so" # ----- acc params ----- modparam("acc", "log_flag", 1) modparam("acc", "failed_transaction_flag", 3) modparam("acc", "log_extra", "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd;src_ip=$si") #!ifdef WITH_HOMER # check IP and port of your capture node modparam("siptrace", "duplicate_uri", "sip:213.136.47.31:9060") modparam("siptrace", "hep_mode_on", 1) modparam("siptrace", "trace_to_database", 0) modparam("siptrace", "trace_flag", 22) modparam("siptrace", "trace_on", 1) #!endif # ----------------- setting module-specific parameters --------------- # modparam("dispatcher", "db_url", DBURL) modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "flags", 2) modparam("dispatcher", "dst_avp", "$avp(AVP_DST)") modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)") modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)") modparam("dispatcher", "sock_avp", "$avp(dssocket)") modparam("dispatcher", "attrs_avp", "$avp(dsattrs)") #set next two parameters if you want to enable balance alg. no. 10 #modparam("dispatcher", "dstid_avp", "$avp(dsdstid)") #modparam("dispatcher", "ds_hash_size", 8) modparam("dispatcher", "ds_ping_interval", 20) modparam("dispatcher", "ds_ping_from", "sip:kamailio@example.com") #modparam("dispatcher", "ds_ping_method", "INFO") modparam("dispatcher", "ds_probing_mode", 1) modparam("dispatcher", "ds_probing_threshold", 1) #configure codes or classes of SIP replies to list only allowed replies (i.e. when temporarily unavailable=480) modparam("dispatcher", "ds_ping_reply_codes", "class=2;code=480;code=404") ####### Routing Logic ######## # main request routing logic route { #!ifdef WITH_HOMER #start duplicate the SIP message now sip_trace(); setflag(22); xlog("L_NOTICE","Tracing"); #!endif # per request initial checks route(REQINIT); # handle requests within SIP dialogs route(WITHINDLG); # CANCEL processing if (is_method("CANCEL")) { if (t_check_trans()) t_relay(); exit; } t_check_trans(); # record routing for dialog forming requests (in case they are routed) # - remove preloaded route headers remove_hf("Route"); if (is_method("INVITE|SUBSCRIBE")) record_route(); #if (is_method("INVITE")) #{ # ds_select_domain("1","4"); # #sl_send_reply("300","Redirect"); # #t_relay(); # exit; #} # account only INVITEs if (is_method("INVITE")) { setflag(1); # do accounting } # handle presence related requests route(PRESENCE); # handle registrations route(REGISTRAR); if ($rU==$null) { # request with no Username in RURI sl_send_reply("484","Address Incomplete"); exit; } route(LOADBALANCE); route(RELAY); } # Per SIP request initial checks 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; } # Reply to options if (uri==myself) { xlog("L_NOTICE","OPTIONS from $si:$sp\n"); if ((method==OPTIONS) && (! uri=~"sip:.*[@]+.*")) { xlog("L_NOTICE","answering options $si:$sp\n"); options_reply(); } } } # Handle requests within SIP dialogs route[WITHINDLG] { if (has_totag()) { # sequential request withing a dialog should # take the path determined by record-routing if (loose_route()) { if (is_method("BYE")) { setflag(1); # do accounting ... setflag(3); # ... even if the transaction fails } route(RELAY); } else { if (is_method("SUBSCRIBE") && uri == myself) { # in-dialog subscribe requests route(PRESENCE); exit; } if ( is_method("ACK") ) { if ( t_check_trans() ) { # non loose-route, but stateful ACK; # must be ACK after a 487 or e.g. 404 from upstream server t_relay(); exit; } else { # ACK without matching transaction ... ignore and discard. exit; } } sl_send_reply("404","Not here"); } exit; } } # Handle SIP registrations route[REGISTRAR] { if(!is_method("REGISTER")) return; #sl_send_reply("404", "No registrar"); #t_relay(); if(!ds_select_dst("1", "4")) { sl_send_reply("404", "No registrar"); exit; } forward(); exit; } # Presence server route route[PRESENCE] { if(!is_method("PUBLISH|SUBSCRIBE")) return; sl_send_reply("404", "Not here"); exit; } route[LOADBALANCE] { #ds_select_dst(destination_set, algorithm) function chooses the destination for the call. For this it can use a lot of algorithms. #Alg. 0 is the default one that does the the choosing over the call ID hash #Alg. 4 is a Round-Robin #Alg. 10 is the one that chooses the destination based on the minimum load of all destinations if(!ds_select_dst("1", "4")) { #if we are here that means no destination is available. We notify the user by 404 and exit the script. xlog("L_NOTICE", "No destination available!"); send_reply("404", "No destination"); exit; } xlog("L_NOTICE", "Routing call to <$ru> via <$du>\n"); #set the no_reply_recieved timeout to 2 second ... adjust the value to your need #note: The first value "0" is invite timeout .. we do not need to change it #This means that is the selected media server fails to respond within 2 seconds the failure_route "MANAGE_FAILURE" is called #note: this implies that ale the signaling from media servers on the way back to the user goes through the proxy as well t_set_fr(0,2000); t_on_failure("MANAGE_FAILURE"); return; } # manage failure routing cases failure_route[MANAGE_FAILURE] { # route(NATMANAGE); if (t_is_canceled()) { exit; } xlog("L_NOTICE", "Media server $du failed to answer, selecting other one!"); # next DST - only for 500 reply or local timeout (set by t_set_fr()) if (t_check_status("500") || t_branch_timeout() || !t_branch_replied()) { #we mark the destination Inactive and Probing ds_mark_dst("ip"); #select the new destination if(ds_next_dst()) { #again set local timeout for reply t_set_fr(0,2000); t_on_failure("MANAGE_FAILURE"); route(RELAY); exit; } else { #last available node failed to reply, no other destinations available send_reply("404", "No destination"); exit; } } } route[RELAY] { xlog("L_NOTICE", "going to <$ru> via <$du>"); if (!t_relay()) { sl_reply_error(); } exit; } ``` and my dispatcher.list ``` # line format # id(int,auto) setid(int) destination(string) flags(int) priority(int) attrs(string) description(string) 1 sip:196.27.235.76:5060 1 sip:213.137.140.230:5060 ``` any help to understand these issues would be greatly appreciated. Cris --- Cristian Livadaru LcX IT Solutions Web: http://lcx.at/ Tel: +43 1 37 37 37 Fax: +43 1 37 37 37 - 25 **24/7 Support: 0900 474 455** (1,81€/Min)

5 years, 4 months

Info: Kamailio World 2019 - First group of speakers

by Daniel-Constantin Mierla

Hello, a short note to let everybody know that we have published the details for the first group of speakers at Kamailio World 2019 (May 6-8, in Berlin) - you can read more about at: * https://www.kamailioworld.com/k07/2019/02/kamailio-world-2019-first-group-o… * https://www.kamailioworld.com/k07/speakers/ The target is to finish the review of the speaking proposals by end of the month, then start working on the schedule. We received a lot more than it can be accommodated, but we will try to select all that are very interesting by having several short sessions/lightning talks. There will be few new concepts, trying to engage more the participants as well as use better the evening time for social networking with a boat trip at the end of first day, in addition to the cocktail party on the second day. Hoping to meet many of you in Berlin at Kamailio World 2019! Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

5 years, 4 months

Branches Routes

by Nicolas Breuer

Hello, We have a main route where we try multiple destinations (SIP Providers) one by one in case of failure. We modify the $ru in branch routes. I have to manipulate the $rU in the main route (adding 000 and strip 000) to create the second branch. Otherwise I have an error in Kamailio , is it expected ?? Feb 16 10:29:13 proxy2 /usr/sbin/kamailio[3837]: NOTICE: RU => 0003280033800 (Branch 0) * Adding 000 in main route Feb 16 10:29:13 proxy2 /usr/sbin/kamailio[3837]: NOTICE: RU => 3280033800 (Branch 0) * Strip "000" in main route * Timeout of first provider (going to main route again with an other branch) Feb 16 10:29:15 proxy2 /usr/sbin/kamailio[3840]: NOTICE: RU => 0003280033800 (Branch 1) Feb 16 10:29:15 proxy2 /usr/sbin/kamailio[3840]: NOTICE: RU => 3280033800 (Branch 1) * Call OK I will now remove the prefix & strip command in main route Feb 16 10:32:11 proxy2 /usr/sbin/kamailio[3951]: NOTICE: RU => 3280033800 (Branch 0) Feb 16 10:32:11 proxy2 /usr/sbin/kamailio[3951]: NOTICE: RU => 3280033800 (Branch 0) Feb 16 10:32:11 proxy2 /usr/sbin/kamailio[3951]: NOTICE: Branch to sip:3280033800@XXXXXXXXXXX * Timeout Feb 16 10:32:13 proxy2 /usr/sbin/kamailio[3955]: NOTICE: RU => 3280033800 (Branch 1) Feb 16 10:32:13 proxy2 /usr/sbin/kamailio[3955]: NOTICE: RU => 3280033800 (Branch 1) Feb 16 10:32:13 proxy2 /usr/sbin/kamailio[3955]: ERROR: tm [t_fwd.c:1728]: t_forward_nonack(): no branches for forwarding Feb 16 10:32:13 proxy2 /usr/sbin/kamailio[3955]: ERROR: tm [tm.c:1548]: _w_t_relay_to(): t_forward_noack failed Feb 16 10:32:13 proxy2 /usr/sbin/kamailio[3955]: ERROR: sl [sl_funcs.c:362]: sl_reply_error(): stateless error reply used: I'm terribly sorry, server error occurred (6/SL) Any suggestions ?

5 years, 4 months

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sr-users February 2019