Hi Daniel,

I have advertise as:

listen=tcp:10.116.15.237:443 advertise sbc01.stg.gii.me:443

(normally it would be tls, I switched to tcp so I could get unencrypted traffic in tcpdump for you)

Record-route is done as:

# Dispatch requests
if (is_method("INVITE")) {
$avp(caller_conid) = $conid;
record_route();
route(DISPATCH);
exit;
}

(route DISPATCH basically does dispatcher lookup and t_relay)

And this is the log for the BYE that doesn't work:

"message":" DEBUG: <core> [core\/udp_server.c:498]: udp_rcv_loop(): received on udp socket: (106\/100\/907) [[BYE sip:linphone@104.175.176.242:43750;alias=130.211.3.12~53883~2;transport=tcp SIP\/2.0 0D 0A Via: SIP\/2.]]"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:610]: parse_msg(): SIP Request:"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:612]: parse_msg(): method: <BYE>"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:614]: parse_msg(): uri: <sip:linphone@104.175.176.242:43750;alias=130.211.3.12~53883~2;transport=tcp>"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:616]: parse_msg(): version: <SIP\/2.0>"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:1303]: parse_via_param(): Found param type 232, <branch> = <z9hG4bK4eda.30b29b519ea0cbd688ceb8071e271f7d.0>; state=16"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:2639]: parse_via(): end of header reached, state=5"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:498]: parse_headers(): Via found, flags=2"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:500]: parse_headers(): this is the first via"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:1303]: parse_via_param(): Found param type 234, <received> = <35.226.32.33>; state=6"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:1303]: parse_via_param(): Found param type 235, <rport> = <6061>; state=6"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:1303]: parse_via_param(): Found param type 232, <branch> = <z9hG4bKy0gFgvHcajHtm>; state=16"}
"message":" DEBUG: <core> [core\/parser\/parse_via.c:2639]: parse_via(): end of header reached, state=5"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:498]: parse_headers(): Via found, flags=78"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:511]: parse_headers(): this is the second via"}
"message":" DEBUG: <core> [core\/parser\/parse_addr_spec.c:185]: parse_to_param(): add param: tag=DU0ehPULu"}
"message":" DEBUG: <core> [core\/parser\/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=29"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:171]: get_hdr_field(): <To> [82]; uri=[sip:8bd2a0aba14541789bb7269800646458@app.nextplus.me]"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:174]: get_hdr_field(): to body [\"Joel Test\" <sip:8bd2a0aba14541789bb7269800646458@app.nextplus.me>], to tag [DU0ehPULu]"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:152]: get_hdr_field(): cseq <CSeq>: <12626897> <BYE>"}
"message":" DEBUG: <core> [core\/receive.c:320]: receive_msg(): --- received sip message - request - call-id: [nsWZzKWRld] - cseq: [12626897 BYE]"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:185]: get_hdr_field(): content_length=0"}
"message":" DEBUG: <core> [core\/parser\/msg_parser.c:89]: get_hdr_field(): found end of header"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/receive.c:380]: receive_msg(): preparing to run routing scripts..."}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 12==13 && [198.1.54.228] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:646]: grep_sock_info(): checking advertise if host==us: 12==12 && [198.1.54.228] == [34.70.182.24]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 12==13 && [198.1.54.228] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 12==13 && [198.1.54.228] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:646]: grep_sock_info(): checking advertise if host==us: 12==16 && [198.1.54.228] == [sbc01.stg.gii.me]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 12==13 && [198.1.54.228] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/forward.c:413]: check_self(): host != me"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} maxfwd [mf_funcs.c:74]: is_maxfwd_present(): value = 69 "}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:247]: check_ruri_sip_version(): check_ruri_sip_version entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:270]: check_ruri_sip_version(): check_ruri_sip_version passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:277]: check_ruri_scheme(): check_ruri_scheme entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:297]: check_ruri_scheme(): check_ruri_scheme passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:305]: check_required_headers(): check_required_headers entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:313]: check_required_headers(): check_required_headers passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:479]: check_cseq_method(): check_cseq_method entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:512]: check_cseq_method(): check_cseq_method passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:521]: check_cseq_value(): check_cseq_value entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:549]: check_cseq_value(): check_cseq_value passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:558]: check_cl(): check_cl entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:583]: check_cl(): check_cl passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:595]: check_expires_value(): check_expires_value entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:632]: check_expires_value(): no expires header found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:732]: check_parse_uris(): check_parse_uris entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:736]: check_parse_uris(): parsing ruri"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:750]: check_parse_uris(): looking up From header"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:764]: check_parse_uris(): parsing From header"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/parser\/parse_addr_spec.c:185]: parse_to_param(): add param: tag=QZQSQQegvc5Zr"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/parser\/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=29"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:790]: check_parse_uris(): parsing From URI"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:808]: check_parse_uris(): looking up To header"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:830]: check_parse_uris(): check_parse_uris(): parsing To URI"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity.c:875]: check_parse_uris(): check_parse_uris passed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} sanity [sanity_mod.c:254]: w_sanity_check(): sanity checks result: 1"}
"message":" NOTICE: {1 12626897 BYE nsWZzKWRld} <script>: JOEL TEST New request - M=BYE UAC-IP=198.1.54.228:5060 LB-IP=<null>:<null> CONID=<null> TCP-CONID=<null> UA='FS textPlus Voice' ID=nsWZzKWRld"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} siputils [checks.c:123]: has_totag(): totag found"}
"message":" NOTICE: {1 12626897 BYE nsWZzKWRld} <script>: In-dialog request from COPS - M=BYE R=sip:linphone@104.175.176.242:43750;alias=130.211.3.12~53883~2;transport=tcp ID=nsWZzKWRld"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:90]: is_preloaded(): is_preloaded: No"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 15==13 && [104.175.176.242] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 5070 (advertise 5070) matches port 43750"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 15==13 && [104.175.176.242] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 5080 (advertise 0) matches port 43750"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 15==13 && [104.175.176.242] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 443 (advertise 443) matches port 43750"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 15==13 && [104.175.176.242] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 80 (advertise 0) matches port 43750"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/forward.c:413]: check_self(): host != me"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 12==13 && [34.70.182.24] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 5070 (advertise 5070) matches port 5070"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:646]: grep_sock_info(): checking advertise if host==us: 12==12 && [34.70.182.24] == [34.70.182.24]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:811]: after_loose(): Topmost route URI: 'sip:34.70.182.24:5070;r2=on;lr=on;ftag=DU0ehPULu;did=bfc.e45;nat=yes' is me"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:628]: grep_sock_info(): checking if host==us: 16==13 && [sbc01.stg.gii.me] == [10.116.15.237]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:635]: grep_sock_info(): checking if port 443 (advertise 443) matches port 443"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/socket_info.c:646]: grep_sock_info(): checking advertise if host==us: 16==16 && [sbc01.stg.gii.me] == [sbc01.stg.gii.me]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/parser\/msg_parser.c:89]: get_hdr_field(): found end of header"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:181]: find_next_route(): No next Route HF found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:875]: after_loose(): no next URI found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [rr_cb.c:94]: run_rr_callbacks(): callback id 0 entered with <r2=on;lr=on;ftag=DU0ehPULu;did=bfc.e45;nat=yes>"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_handlers.c:1306]: dlg_onroute(): route param is 'bfc.e45' (len=7)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:784]: dlg_lookup(): ref dlg 0x7f56979d4660 with 1 -> 3"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:786]: dlg_lookup(): dialog id=1358 found on entry 3323"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_profile.c:536]: set_current_dialog(): setting current dialog [3323:1358]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1228]: next_state_dlg(): dialog 0x7f56979d4660 changed from state 4 to state 5, due event 7 (ref 3)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1009]: dlg_ref_helper(): ref op on 0x7f56979d4660 with 1 from dlg_handlers.c:1430"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1013]: dlg_ref_helper(): ref dlg 0x7f56979d4660 with 1 -> 4"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_handlers.c:1441]: dlg_onroute(): BYE successfully processed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1029]: dlg_unref_helper(): unref op on 0x7f56979d4660 with 2 from dlg_handlers.c:1465"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1033]: dlg_unref_helper(): unref dlg 0x7f56979d4660 with 2 -> 2"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1029]: dlg_unref_helper(): unref op on 0x7f56979d4660 with 1 from dlg_hash.c:1047"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1033]: dlg_unref_helper(): unref dlg 0x7f56979d4660 with 1 -> 1"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} nathelper [nathelper.c:1144]: handle_ruri_alias(): setting dst_uri to <sip:130.211.3.12:53883;transport=tcp>"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} nathelper [nathelper.c:1166]: handle_ruri_alias(): rewriting r-uri to <sip:linphone@104.175.176.242:43750;transport=tcp>"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_lookup.c:1328]: t_newtran(): msg (0x7f569f9211e0) id=394\/10865 global id=393\/10865 T start=0xffffffffffffffff"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_lookup.c:497]: t_lookup_request(): start searching: hash=44516, isACK=0"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_lookup.c:455]: matching_3261(): RFC3261 transaction matching failed - via branch [z9hG4bK4eda.30b29b519ea0cbd688ceb8071e271f7d.0]"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_lookup.c:675]: t_lookup_request(): no transaction found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_hooks.c:336]: run_reqin_callbacks_internal(): trans=0x7f56979d6558, callback type 1, id 0 entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/crypto\/md5utils.c:67]: MD5StringArray(): MD5 calculated: 7fe00a28920a3325330971908f8c5b0e"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:1095]: check_route_param(): route params checking against [;r2=on;lr=on;ftag=DU0ehPULu;did=bfc.e45;nat=yes] (orig: [r2=on;lr=on;ftag=DU0ehPULu;did=bfc.e45;nat=yes])"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} rr [loose.c:1101]: check_route_param(): params are <;r2=on;lr=on;ftag=DU0ehPULu;did=bfc.e45;nat=yes>"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" ERROR: {1 12626897 BYE nsWZzKWRld} tm [..\/..\/core\/forward.h:261]: msg_send_buffer(): tcp_send failed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_fwd.c:1537]: t_send_branch(): send to 130.211.3.12:53883 (2) failed"}
"message":" WARNING: {1 12626897 BYE nsWZzKWRld} tm [t_fwd.c:1557]: t_send_branch(): sending request on branch 0 failed"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_funcs.c:336]: t_relay_to(): t_forward_nonack returned error -1 (-477)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_funcs.c:354]: t_relay_to(): -477 error reply generation delayed "}
"message":" ERROR: {1 12626897 BYE nsWZzKWRld} <script>: Could not forward request - M=BYE R=sip:linphone@104.175.176.242:43750;transport=tcp ID=nsWZzKWRld"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" ERROR: {1 12626897 BYE nsWZzKWRld} sl [sl_funcs.c:392]: sl_reply_error(): stateless error reply used: I'm terribly sorry, server error occurred (1\/SL)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/receive.c:438]: receive_msg(): request-route executed in: 1051 usec"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:784]: dlg_lookup(): ref dlg 0x7f56979d4660 with 1 -> 2"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:786]: dlg_lookup(): dialog id=1358 found on entry 3323"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1029]: dlg_unref_helper(): unref op on 0x7f56979d4660 with 1 from dlg_hash.c:1047"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1033]: dlg_unref_helper(): unref dlg 0x7f56979d4660 with 1 -> 1"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_lookup.c:1493]: t_unref(): delayed error reply generation(-477)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_reply.c:1667]: cleanup_uac_timers(): RETR\/FR timers reset"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_hooks.c:252]: run_trans_callbacks_internal(): DBG: trans=0x7f56979d6558, callback type 512, id 0 entered"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:784]: dlg_lookup(): ref dlg 0x7f56979d4660 with 1 -> 2"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:786]: dlg_lookup(): dialog id=1358 found on entry 3323"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1029]: dlg_unref_helper(): unref op on 0x7f56979d4660 with 1 from dlg_hash.c:1047"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} dialog [dlg_hash.c:1033]: dlg_unref_helper(): unref dlg 0x7f56979d4660 with 1 -> 1"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_reply.c:610]: _reply_light(): reply sent out. buf=0x7f569f91ed70: SIP\/2.0 477 Unfortun..., shmem=0x7f56979d1520: SIP\/2.0 477 Unfortun"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} tm [t_reply.c:621]: _reply_light(): finished"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/xavp.c:517]: xavp_destroy_list(): destroying xavp list (nil)"}
"message":" DEBUG: {1 12626897 BYE nsWZzKWRld} <core> [core\/receive.c:529]: receive_msg(): cleaning up"}
"message":" DEBUG: <core> [core\/io_wait.h:599]: io_watch_del(): DBG: io_watch_del (0x562f315c32a0, 6, -1, 0x10) fd_no=3 called"}
"message":" DEBUG: <core> [core\/tcp_read.c:1680]: release_tcpconn(): releasing con 0x7f56979e0ad8, state 1, fd=6, id=6 ([104.175.176.242]:43750 -> [104.175.176.242]:443)"}
"message":" DEBUG: <core> [core\/tcp_read.c:1684]: release_tcpconn(): extra_data (nil)"}
"message":" DEBUG: <core> [core\/io_wait.h:599]: io_watch_del(): DBG: io_watch_del (0x562f315c32a0, 9, -1, 0x10) fd_no=2 called"}
"message":" DEBUG: <core> [core\/tcp_read.c:1680]: release_tcpconn(): releasing con 0x7f56979f0e78, state 1, fd=9, id=7 ([104.175.176.242]:44043 -> [104.175.176.242]:443)"}
"message":" DEBUG: <core> [core\/tcp_read.c:1684]: release_tcpconn(): extra_data (nil)"}
"message":" DEBUG: <core> [core\/tcp_main.c:3625]: handle_tcp_child(): reader response= 7f56979e0ad8, 1 from 0 "}
"message":" DEBUG: <core> [core\/io_wait.h:377]: io_watch_add(): DBG: io_watch_add(0x562f31567820, 24, 2, 0x7f56979e0ad8), fd_no=15"}
"message":" DEBUG: <core> [core\/tcp_main.c:3752]: handle_tcp_child(): CONN_RELEASE 0x7f56979e0ad8 refcnt= 1"}
"message":" DEBUG: <core> [core\/tcp_main.c:3625]: handle_tcp_child(): reader response= 7f56979f0e78, 1 from 0 "}
"message":" DEBUG: <core> [core\/io_wait.h:377]: io_watch_add(): DBG: io_watch_add(0x562f31567820, 26, 2, 0x7f56979f0e78), fd_no=16"}
"message":" DEBUG: <core> [core\/tcp_main.c:3752]: handle_tcp_child(): CONN_RELEASE 0x7f56979f0e78 refcnt= 1"}

Not sure what I can be doing wrong!

IP information to help you understand the packet capture:

UAC: 104.175.176.242

LB (UAC side): 35.186.235.62:443 or sbc01stg.gii.me:443

LB (Kam side can be many, for this example it's 130.211.3.12:53883)

PSTN GW: 198.1.54.228

Thanks for your help on this.

Best,

Joel.

On Fri, Nov 22, 2019 at 1:02 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

how do you set the record-route? Do you have advertised address for the socket receiving TCP/HAproxy loadbalancer connections?

Can you give all the debug messages when processing the BYE that doesn't go through?

Cheers,
Daniel

On 21.11.19 19:44, Joel Serrano wrote:
Hi Daniel,

I sent you (privately) 2 pcaps. Please let me know if you need anything else.

My current TCP params are:

disable_tcp=no
tcp_children=1
tcp_max_connections=12288
tcp_rd_buf_size=65536
tcp_conn_wq_max=131072
tcp_keepalive=yes
tcp_crlf_ping=yes
tcp_keepcnt=3
tcp_keepidle=30
tcp_keepintvl=30
tcp_connection_lifetime=3610
tcp_accept_no_cl=yes
tcp_accept_haproxy=yes
tcp_no_connect=yes

Thanks,

Joel.
On Thu, Nov 21, 2019 at 7:50 AM Joel Serrano <joel@textplus.com> wrote:
I don’t, but I’ll repeat the test with tcpdump active! I’ll report back shortly
On Thu, Nov 21, 2019 at 03:50 Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,

do you have the pcap with the sip traffic for this case?

Cheers,
Daniel
On 20.11.19 19:45, Joel Serrano wrote:
Hello,

I added to the config file:

tcp_no_connect=yes

And with that param, the same test results in a different behavior, but still not working:

"message":" DEBUG: {1 12583750 BYE RVXZVMHKop} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" ERROR: {1 12583750 BYE RVXZVMHKop} tm [..\/..\/core\/forward.h:292]: msg_send_buffer(): tcp_send failed"}
"message":" DEBUG: {1 12583750 BYE RVXZVMHKop} tm [t_fwd.c:1537]: t_send_branch(): send to 35.191.9.20:56470 (3) failed"}
"message":" WARNING: {1 12583750 BYE RVXZVMHKop} tm [t_fwd.c:1557]: t_send_branch(): sending request on branch 0 failed"}
"message":" DEBUG: {1 12583750 BYE RVXZVMHKop} tm [t_funcs.c:336]: t_relay_to(): t_forward_nonack returned error -1 (-477)"}
"message":" DEBUG: {1 12583750 BYE RVXZVMHKop} tm [t_funcs.c:354]: t_relay_to(): -477 error reply generation delayed "}

Although, netstats says the connection is active:

root@sbc-gslb-test-1:~# netstat -putan | grep 56470
tcp 0 0 10.116.15.237:443 35.191.9.20:56470 ESTABLISHED 3920/kamailio
root@sbc-gslb-test-1:~#

Anyone?

On Wed, Nov 20, 2019 at 9:26 AM Joel Serrano <joel@textplus.com> wrote:

Bumping this thread up!

I did some more tests trying to narrow down the problem and this is what I found...:

On the INVITE, I add the TCP connection information I want to save (for later reuse). Snippets:

...(found this in the misc/examples/pkg/sip-router-oob.cfg, but I haven't noticed any changes to the headers or anything)...

# Force response to received connection
force_rport();
if (proto==TCP || proto == TLS) {
force_tcp_alias();
xlog("L_NOTICE", "force_tcp_alias() done");
}

...

...(I also have this)...

if (is_first_hop()) {
xlog("L_NOTICE", "Adding LB info to contact - M=$rm ID=$ci\n");
add_contact_alias("$tcp(c_si)", "$tcp(c_sp)", "tls");
}

...

Which effectively makes the contact look like:

<sip:linphone@104.175.176.242:50312;alias=35.191.9.21~50705~3;transport=tls>

..180..

..200 OK..

..ACK..

Then, callee ends the call (so the BYE comes from callee to caller), when I run handle_ruri_alias() I see in the logs that the everything is handled correctly:

"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} nathelper [nathelper.c:1144]: handle_ruri_alias(): setting dst_uri to <sip:35.191.9.21:50705;transport=tls>"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} nathelper [nathelper.c:1166]: handle_ruri_alias(): rewriting r-uri to <sip:linphone@104.175.176.242:50312;transport=tls>"}

But then, Kamalio won't reuse the existing TCP connection and tries to create a new one:

"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} tm [t_lookup.c:1328]: t_newtran(): msg (0x7f85883b14c8) id=27\/1974 global id=25\/1974 T start=0xffffffffffffffff"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} tm [t_lookup.c:497]: t_lookup_request(): start searching: hash=63128, isACK=0"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} tm [t_lookup.c:455]: matching_3261(): RFC3261 transaction matching failed - via branch [z9hG4bK896f.dc04734743b0f0997f39c4fff07c0fbb.0]"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} tm [t_lookup.c:675]: t_lookup_request(): no transaction found"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} tm [t_hooks.c:336]: run_reqin_callbacks_internal(): trans=0x7f8583b17208, callback type 1, id 0 entered"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/crypto\/md5utils.c:67]: MD5StringArray(): MD5 calculated: 71c229aff3c0b4f6e9e77c4990b74e5e"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} rr [loose.c:1095]: check_route_param(): route params checking against [;r2=on;lr=on;ftag=tAsjXhyIX;did=7d1.e6a2;nat=yes] (orig: [r2=on;lr=on;ftag=tAsjXhyIX;did=7d1.e6a2;nat=yes])"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} rr [loose.c:1101]: check_route_param(): params are <;r2=on;lr=on;ftag=tAsjXhyIX;did=7d1.e6a2;nat=yes>"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/tcp_main.c:2060]: tcp_send(): no open tcp connection found, opening new one"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/ip_addr.c:229]: print_ip(): tcpconn_new: new tcp connection: 35.191.9.21"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/tcp_main.c:1242]: tcpconn_new(): on port 50705, type 3"}
"message":" DEBUG: {1 12543376 BYE QQy-qagkcB} <core> [core\/tcp_main.c:1561]: tcpconn_add(): hashes: 337:3545:0, 3"}

Am I still missing anything?

Is this a bug and I should open a GH issue?

Any suggestions/comments/ideas are very welcome!

Thanks,

Joel.

On Fri, Nov 1, 2019 at 11:46 AM Joel Serrano <joel@textplus.com> wrote:

Hi Yuriy,

Thanks for your suggestion, I've tried tcp_accept_aliases=yes in config and I added force_tcp_alias() in the request route, but I haven't seen any changes.

All the VIA headers look exactly the same, and I still get this in the logs:

"message":" DEBUG: {1 11762916 BYE d2T9-YOxYk} <core> [core\/tcp_main.c:2060]: tcp_send(): no open tcp connection found, opening new one"}

The docs say:

"force_tcp_alias(port)

adds a tcp port alias for the current connection (if tcp). Useful if you want to send all the trafic to port_alias through the same connection this request came from [it could help for firewall or nat traversal]. With no parameters adds the port from the message via as the alias. When the “aliased” connection is closed (e.g. it's idle for too much time), all the port aliases are removed."

I tried also using force_tcp_alias(5353) as an example, just to see if I find "5353" added to any headers, but no luck, it wasn't added anywhere..

Any other suggestions? Am I missing something?

Thanks,

Joel.

On Thu, Oct 31, 2019 at 10:53 PM Yuriy Gorlichenko <ovoshlook@gmail.com> wrote:

You have to use
tcp_accept_aliases=yes

But this is not enough as this param will be triggered by function

force_tcp_alias() you need to use in the route for request ( for example record_route or subroutes)

It will add param paramname=<portnum> (I Don't remember specific name)

to Via header that will be used for all dialog requests belongs one being affected

On Fri, 1 Nov 2019, 00:52 Joel Serrano, <joel@textplus.com> wrote:

Hello,

I'm setting up a Kamailio instance behind a TCP load balancer (with proxy protocol and NAT routing: meaning Kam stays in the flow all the time).

I've managed to get working almost everything we need for our service, except for one thing, and that is for Kam to use existing connections for subsequent transactions:

Following this example:

EXT & INT represent the external and internal interface of a LB between the UAC and Kamailio, using TLS on both legs and proxy protocol.

Transaction 1: INVITE, 100, 180, 183, 200 OK

UAC 1.1.1.1:1111 -> 2.2.2.2:443 (EXT) 3.3.3.3:3333 (INT) -> 7.7.7.7:5060 (Kamailio)

Transaction 2: ACK

UAC 1.1.1.1:1112 -> 2.2.2.2:443 (EXT) 4.4.4.4:4444 (INT) -> 7.7.7.7:5060 (Kamailio)

Transaction 3: BYE

Kam 7.7.7.7:5060 -> 3.3.3.3:3333 (INT) 2.2.2.2:443 (EXT) -> 1.1.1.1:1111 UAC

My problem is with Transaction 3. In this case the BYE is originated by the callee, and Kam has to send it to the caller. As the TCP load balancer is between Kam and the UAC, Kam has to send it to the LB so then the LB can forward it back to the UAC. This works well for msgs that belong to the same transaction (INVITE, 100, 180, 183, 200 OK) but it fails when they don't belong to the same transaction.

Thanks to the newly added $tcp(c_si) and $tcp(c_sp) pseudovars, I can save the internal IP:Port of the LB, so I can send stuff later to it, my problem is that Kam doesn't seem to allow this?

On the original INVITE, I use the following to save where I have to reach the UAC:

add_contact_alias("$tcp(c_si)", "$tcp(c_sp)", "tls");

Then, handle_ruri_alias() will take care of setting $du to the correct (internal LB) IP:Port so I can reach the UAC, this works.

My problem is that Kamailio doesn't identify that there is a valid existing TLS connection still up (from the INVITE), and tries to create a new one (and this obviously doesn't gives all sorts of problems).

So when I run handle_ruri_alias(), and $du is set to 3.3.3.3:3333 (from the example above), instead of using the existing connection, Kamailio tries to create a new one.

I have a log statement right before with the result of tcp_conid_state(1) (the connid is 1 for this connection) and the $rc is 1 (Connection is OK), but when I tell Kamailio it has to use it I get this in the logs:

DEBUG: {1 11726467 BYE gqR1qqNK8B} <core> [core\/tcp_main.c:2060]: tcp_send(): no open tcp connection found, opening new one"}

And then the problems begin...

I have tried playing around with:

tcp_reuse_port

tcp_connection_match

But no luck..!

I also thought it could be a problem of the connection being created on one worker, and a different worker handling BYE transaction, so tested with children=1 and tcp_children=1, but still same problem.

A more detailed log:

In blue my log statement checking for the status of conid "1", in red Kam not being able to find it, although it exists (as validated by tcp_conid_state(), and even in netstat I can see the connection established). In this log, 35.191.0.66:60271 would be the equivalent of 3.3.3.3:3333 and 104.175.176.242:28157 would be 1.1.1.1:1111 from the example above.

...
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/tcp_main.c:1657]: _tcpconn_find(): found connection by id: 1"}
"message":" NOTICE: {1 11727734 BYE 5-LX4GdI9X} <script>: JOEL TEST New request - M=BYE TCP STATUS:1 ID=5-LX4GdI9X"}
...
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} nathelper [nathelper.c:1144]: handle_ruri_alias(): setting dst_uri to <sip:35.191.0.66:60271;transport=tls>"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} nathelper [nathelper.c:1166]: handle_ruri_alias(): rewriting r-uri to <sip:linphone@104.175.176.242:28157;transport=tls>"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tm [t_lookup.c:1328]: t_newtran(): msg (0x7f3c884259d0) id=534\/18664 global id=532\/18664 T start=0xffffffffffffffff"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tm [t_lookup.c:497]: t_lookup_request(): start searching: hash=63496, isACK=0"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tm [t_lookup.c:455]: matching_3261(): RFC3261 transaction matching failed - via branch [z9hG4bK808f.eee2444f92a02cb33e1b7a21f20bc6bb.0]"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tm [t_lookup.c:675]: t_lookup_request(): no transaction found"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tm [t_hooks.c:336]: run_reqin_callbacks_internal(): trans=0x7f3c83b8c598, callback type 1, id 0 entered"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/crypto\/md5utils.c:67]: MD5StringArray(): MD5 calculated: 3071029feb05962b26b53a9664a14210"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} rr [loose.c:1095]: check_route_param(): route params checking against [;r2=on;lr=on;ftag=Eb~TbdfTA;did=cab.01e2;nat=yes] (orig: [r2=on;lr=on;ftag=Eb~TbdfTA;did=cab.01e2;nat=yes])"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} rr [loose.c:1101]: check_route_param(): params are <;r2=on;lr=on;ftag=Eb~TbdfTA;did=cab.01e2;nat=yes>"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} siputils [checks.c:123]: has_totag(): totag found"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/msg_translator.c:161]: check_via_address(): (198.1.54.228, 198.1.54.228, 0)"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/tcp_main.c:2060]: tcp_send(): no open tcp connection found, opening new one"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/ip_addr.c:229]: print_ip(): tcpconn_new: new tcp connection: 35.191.0.66"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/tcp_main.c:1242]: tcpconn_new(): on port 60271, type 3"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} <core> [core\/tcp_main.c:1561]: tcpconn_add(): hashes: 1446:2350:0, 5"}
"message":" DEBUG: {1 11727734 BYE 5-LX4GdI9X} tls [tls_server.c:199]: tls_complete_init(): completing tls connection initialization"}
...

So time to seek help from the community, any suggestions/ideas/comments? Sorry if all this sounds confusing, I've tried my best to put in text the whole scenario in and "understandable" way...

Is this even doable?

Thanks,

Joel.

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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com