Hello everybody,
I am having a problem with realtime SIP peers.
On Asterisk 1.8, I had SIP peers for external SIP providers configured in database and additional “register” lines in sip.conf so they would register.
Now I upgraded to Asterisk 11.3.0, partly because of the promised callbackextension feature for realtime peers (reviewboard.asterisk.org/r/1717/). Removed the ‘register’ lines from sip.conf. My peers register correctly when Asterisk is started or if I do ‘module unload chan_sip.so; module load chan_sip.so’, but if I do ‘sip reload’, they stay in ‘Unregistered’ state forever.
*CLI> sip show registry
Host dnsmgr Username Refresh State Reg.Time
xxx.xxx.xxx.xxx:5060 N xxxxxxxx 45 Registered Fri, 05 Apr 2013 05:37:02
1 SIP registrations.
*CLI>
*CLI> sip reload
*CLI> Reloading SIP
== Parsing ‘/etc/asterisk/sip.conf’: Found
== Using SIP CoS mark 4
[Apr 5 05:37:59] NOTICE[16991]: chan_sip.c:5527 register_realtime_peers_with_callbackextens: Created realtime peer ‘peer’ for registration
== Parsing ‘/etc/asterisk/sip_notify.conf’: Found
*CLI>
*CLI>
*CLI> sip show registry
Host dnsmgr Username Refresh State Reg.Time
xxx.xxx.xxx.xxx:5060 N xxxxxxxx 60 Unregistered
1 SIP registrations.
*CLI>
Also, “sip show peers” shows the peer correctly after restart, but is empty after ‘sip reload’.
If I add the “register” line back to sip.conf, I get 2 lines for the same peer (in “sip show registry”) and both show state = registered. Strange.
Tried to dig through the code in chan_sip.c and one difference seems to be in the “register” line created by build_peer() - it includes the peername (register => peer?user:secret@host/extension), whereas in my config file I had just “register => user:secret@host/extension”. I removed the peer part from the source and recompiled, and if I recall correctly the registration “survived” sip reload after that, but that’s a hack, not a solution. 
I found this bug: issues.asterisk.org/jira/browse/ASTERISK-20611, but I don’t think that’s my issue - anyway, it should be fixed by now, but I still had the same issue with 11.4.0-rc1.
Does anybody have experience with realtime peers registering using callbackextension? Does this problem seem like a configuration issue or should I file a bug report?
Sorry if you read this twice, I am crossposting to asterisk-users list as I still haven’t figured out the best place to get answers. 