Hi All, I was attempting to switch from UDP to TCP for relaying. I used t_relay_to_tcp() instead of t_relay() => if (!t_relay_to_tcp()) { sl_reply_error(); } The problem is that I am still seeing the SIP messages as UDP on the Server that the messages are relayed to. Any Ideas? Thank you, Steve

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Hi Alex, I tried your suggestion and everything is still going over UDP. I verified with tcpdump/wireshark and all SIP traffic is UDP. Thank you, -Steve -----Original Message----- From: sr-users [mailto:sr-users-bounces@lists.kamailio.org] On Behalf Of Alex Balashov Sent: Tuesday, May 15, 2018 11:44 AM To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: Re: [SR-Users] Transport question Hi Steve, Do you have a TCP listener from which the messages would be expected to egress? Also, try use regular t_relay(), but beforehand do: $ru = $ru + ";transport=TCP"; -- Alex On Tue, May 15, 2018 at 03:43:26PM +0000, Wilkins, Steve wrote: -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ 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

Yes there is an error. I get this error trying both ways => no corresponding socket found for "111.25.1.99" af 2 (udp: 111.25.1.99:5060). It is still trying to send UDP. 111.25.1.99 is accepting TCP traffic, other calls are reaching via other sources using TCP. I'm just not sure why it is refusing to send tcp. -Steve -----Original Message----- From: sr-users [mailto:sr-users-bounces@lists.kamailio.org] On Behalf Of Alex Balashov Sent: Tuesday, May 15, 2018 12:20 PM To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: Re: [SR-Users] Transport question Are there any errors in the logs suggestive of a failure to select an appropriate egress listener? On Tue, May 15, 2018 at 04:14:07PM +0000, Wilkins, Steve wrote: -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ 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

I tried this and I now get ERROR: <core> [core/pvapi.c:1377]: pv_printf(): no more space for spec value ERROR: <core> [core/pvapi.c:1386]: pv_printf(): buffer overflow -- increase the buffer size... (I have these values set super high, I was using the defaults and getting the same error) WARNING: pv [pv_core.c:2315]: pv_set_force_sock(): no socket found to match [tcp: 111.25.1.99:5060] ERROR: tm [ut.h:317]: uri2dst2(): no corresponding socket found for "111.25.1.99" af 2 (udp: 111.25.1.99:5060) ERROR: tm [t_fwd.c:469]: prepare_new_uac(): can't fwd to af 2, proto 1 (no corresponding listening socket) ERROR: tm [t_fwd.c:1732]: t_forward_nonack(): failure to add branches It seems strange the WARNING is showing tcp but the ERROR is showing udp. Thank you! -----Original Message----- From: sr-users [mailto:sr-users-bounces@lists.kamailio.org] On Behalf Of Alex Balashov Sent: Tuesday, May 15, 2018 12:41 PM To: Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; Subject: Re: [SR-Users] Transport question Have a read about 'mhomed' works and see if it might make sense to turn it off or on: https://www.kamailio.org/wiki/cookbooks/5.1.x/core#mhomed Otherwise, for experimentation's sake, try mhomed=0 and force the outgoing listener explicitly: $fs = 'tcp:x.x.x.x:5060'; ... t_relay(); -- Alex On Tue, May 15, 2018 at 04:38:59PM +0000, Wilkins, Steve wrote: 111.25.1.99:5060). It is still trying to send UDP. 111.25.1.99 is accepting TCP traffic, other calls are reaching via other sources using TCP. appropriate egress listener? verified with tcpdump/wireshark and all SIP traffic is UDP. expected to egress? the Server that the messages are relayed to. Any Ideas? > > > > > > Thank you, > > > Steve > > > > > _______________________________________________ > > > Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org > > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > > > > -- > > Alex Balashov | Principal | Evariste Systems LLC > > > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > > > _______________________________________________ > > 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 > > -- > Alex Balashov | Principal | Evariste Systems LLC > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > _______________________________________________ > 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

I tried this and I now get ERROR: <core> [core/pvapi.c:1377]: pv_printf(): no more space for spec value ERROR: <core> [core/pvapi.c:1386]: pv_printf(): buffer overflow -- increase the buffer size... (I have these values set super high, I was using the defaults and getting the same error) WARNING: pv [pv_core.c:2315]: pv_set_force_sock(): no socket found to match [tcp: 111.25.1.99:5060] ERROR: tm [ut.h:317]: uri2dst2(): no corresponding socket found for "111.25.1.99" af 2 (udp: 111.25.1.99:5060) ERROR: tm [t_fwd.c:469]: prepare_new_uac(): can't fwd to af 2, proto 1 (no corresponding listening socket) ERROR: tm [t_fwd.c:1732]: t_forward_nonack(): failure to add branches It seems strange the WARNING is showing tcp but the ERROR is showing udp. Thank you! -----Original Message----- From: sr-users [mailto:sr-users-bounces@lists.kamailio.org] On Behalf Of Alex Balashov Sent: Tuesday, May 15, 2018 12:41 PM To: Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; Subject: Re: [SR-Users] Transport question Have a read about 'mhomed' works and see if it might make sense to turn it off or on: https://www.kamailio.org/wiki/cookbooks/5.1.x/core#mhomed Otherwise, for experimentation's sake, try mhomed=0 and force the outgoing listener explicitly: $fs = 'tcp:x.x.x.x:5060'; ... t_relay(); -- Alex On Tue, May 15, 2018 at 04:38:59PM +0000, Wilkins, Steve wrote: 111.25.1.99:5060). It is still trying to send UDP. 111.25.1.99 is accepting TCP traffic, other calls are reaching via other sources using TCP. appropriate egress listener? verified with tcpdump/wireshark and all SIP traffic is UDP. expected to egress? the Server that the messages are relayed to. Any Ideas? > > > > > > Thank you, > > > Steve > > > > > _______________________________________________ > > > Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org > > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > > > > -- > > Alex Balashov | Principal | Evariste Systems LLC > > > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > > > _______________________________________________ > > 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 > > -- > Alex Balashov | Principal | Evariste Systems LLC > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > _______________________________________________ > 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

Wilkins, Steve writes: Check your send socket, i.e., that it listens on TCP. -- Juha _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Yes, I do. It seems so strange that nothing I try will enable it to go out over TCP. There is very little configuration to force it out TCP. I have tried a few thing that Alex has suggested but nothing sends it over TCP.

Yes, I do. It seems so strange that nothing I try will enable it to go out over TCP. There is very little configuration to force it out TCP. I have tried a few thing that Alex has suggested but nothing sends it over TCP.