Bogdan In fact the TCP connection stays open (I checked with netstat on port 28733 being open on the remote host).
I think the problem is opensips is opening (or is supposed to open) 5060 on the remote and this is failing? I think it may be looking for an already existing connection to 5060? Pete On 11 February 2015 at 20:11, Bogdan-Andrei Iancu <[email protected]> wrote: > Hi Pete, > > If the TCP connection (the one used to received the SUBSCRIBE from end > user) went down, when sending an in-dialog NOTIFY, OpenSIPS will refuse to > open a new TCP connection (the policy is to accept connection, not to open > connections towards end-users). > > Can you check if this is your case ? > > Regards, > > Bogdan-Andrei Iancu > OpenSIPS Founder and Developerhttp://www.opensips-solutions.com > > On 11.02.2015 12:50, Pete Kelly wrote: > > I have been experimenting recently with Presence over TCP and noticed > sometimes OpenSIPS fails to send a NOTIFY for a recent SUBSCRIBE, with a > tcp_send error in the logs. > > I did some research and found an old issue which seems to be similar to > this as the inbound SUBSCRIBE TCP connection is on a high port, yet the > NOTIFY is to go to port 5060. > > http://lists.opensips.org/pipermail/users/2013-May/025922.html > > The fix here is to set tcp_accept_aliases =1 > > I tried this fix and it did not resolve the issue. Looking in the source > code it seems OpenSIPS may be trying to reuse an old/existing TCP > connection and is failing to find one - it does seem to be slightly > intermittent too. Sometimes (very rarely) it will work, and it seems to be > related to how many other TCP connections are open at the moment but I have > found it very very difficult to pin down. In the end I got round it by > looping the TCP SUBSCRIBE back to UDP and the OpenSIPS then produces a > NOTIFY/UDP no problem. This solution is a bodge and I would be interested > to know if the failure to tcp_send is a bug or something I can detect and > handle in the config somehow? > > Using OpenSIPS 1.11 latest, in EXTRA_DEBUG mode this is the error that > is produced: > > [19361]: ERROR:tm:msg_send: tcp_send failed > [19361]: ERROR:tm:t_uac: attempt to send to > 'sip:111.111.8.146:5060;transport=tcp;lr' > failed > > This is the inbound SUBSCRIBE and 200OK... I am simply dealing with this > by calling handle_subscribe('1'); > > T 2015/02/10 12:52:09.324134 111.111.8.146:28733 -> 192.168.0.113:5060 > [AP] > SUBSCRIBE sip:[email protected] SIP/2.0. > Via: SIP/2.0/TCP 111.111.8.146:5060 > ;egress-zone=DNS;branch=z9hG4bK5c628151ab895c5f2f45ed8bdafeda0d24504147.1569b0b8efc74f7daf3767cc97d0b38e;proxy-call-id=345dee99-7aca-44b4-bf5f-fb1f2e57774a;rport. > Via: SIP/2.0/TLS 10.15.20.113:54999 > ;branch=z9hG4bKfd5e7b1424014fc8de23205f0de3873e.1;received=188.39.51.2;rport=54999;ingress-zone=DefaultSubZone. > Call-ID: [email protected]. > CSeq: 303 SUBSCRIBE. > Contact: <sip:[email protected] > ;gr=urn:uuid:683f87a0-e026-5f0a-b86b-58139361c7a4>. > From: <sip:[email protected]>;tag=359dbb1cb104d434. > To: <sip:[email protected]>. > Max-Forwards: 15. > Record-Route: <sip:111.111.8.146:5060;transport=tcp;lr>. > Record-Route: <sip:111.111.8.146:5061;transport=tls;lr>. > Record-Route: <sip:188.39.51.2:54999 > ;transport=tls;apparent=remove;ds;lr;proxy-call-id=345dee99-7aca-44b4-bf5f-fb1f2e57774a>. > User-Agent: Test. > Expires: 3600. > Event: presence. > Accept: application/pidf+xml. > P-Asserted-Identity: <sip:[email protected]>. > X-TAATag: 6ed63f01-3191-4a1f-b2a2-4121fb834f07. > Content-Length: 0. > . > > > T 2015/02/10 12:52:09.326218 192.168.0.113:5060 -> 111.111.8.146:28733 > [AP] > SIP/2.0 200 OK. > Via: SIP/2.0/TCP 111.111.8.146:5060 > ;received=111.111.8.146;egress-zone=DNS;branch=z9hG4bK5c628151ab895c5f2f45ed8bdafeda0d24504147.1569b0b8efc74f7daf3767cc97d0b38e;proxy-call-id=345dee99-7aca-44b4-bf5f-fb1f2e57774a;rport=28733. > Via: SIP/2.0/TLS 10.15.20.113:54999 > ;branch=z9hG4bKfd5e7b1424014fc8de23205f0de3873e.1;received=188.39.51.2;rport=54999;ingress-zone=DefaultSubZone. > Call-ID: [email protected]. > CSeq: 303 SUBSCRIBE. > From: <sip:[email protected]>;tag=359dbb1cb104d434. > To: <sip:[email protected] > >;tag=e3eb1f19b04f8e78afd28f643f416b5f-9be8. > Record-Route: <sip:111.111.8.146:5060;transport=tcp;lr>. > Record-Route: <sip:111.111.8.146:5061;transport=tls;lr>. > Record-Route: <sip:188.39.51.2:54999 > ;transport=tls;apparent=remove;ds;lr;proxy-call-id=345dee99-7aca-44b4-bf5f-fb1f2e57774a>. > Expires: 3600. > Contact: <sip:[email protected]:5060;transport=tcp> > <sip:[email protected]:5060;transport=tcp>. > Server: Test. > Content-Length: 0. > > > _______________________________________________ > Users mailing > [email protected]http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > >
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