[asterisk-bugs] [Asterisk 0018699]: SIP Realtime: Peer isn't deleted/cleared from 'sip show peers' when the phone unregister

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18699 
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Reported By:                ibercom
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18699
Category:                   Channels/chan_sip/Registration
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.4.39.1 
JIRA:                       SWP-3028 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2011-01-28 14:17 CST
Last Modified:              2011-02-10 12:39 CST
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Summary:                    SIP Realtime: Peer isn't deleted/cleared from 'sip
show peers' when the phone unregister
Description: 
I use cache realtime friends. When the registration expires
(rtautoclear=yes), the friend vanish from the configuration until requested
again. It is ok. But when the phone unregisters (x-lite) the friend
continues existing. 'sip show peer' shows the peer in UNKNOWN status
forever.
In a multiserver environment it is a problem because the phone can be
registered in other server and the database have correct information, but
the first server can't call this phone because it is in memory and it don't
load information from the database. You need use sip prune realtime xxxx
and then it is ok.
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 (0131803) ibercom (reporter) - 2011-02-10 12:39
 https://issues.asterisk.org/view.php?id=18699#c131803 
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I don't know C language. But afterwards seek inside the code of the
chan_sip.c, if I comment the part of the code where the phone unregister it
works better. The peer expire ok and it's not in unknown state and the
cached peer is cleared.
Although more slowly, max. 3600 sec. since it is not immediate. But this
isn't the solutions.

Asterisk 1.4.38 - chan_sip.c - Commented lines:

8847 		/* This means remove all registrations and return OK */
8848 		memset(&peer->addr, 0, sizeof(peer->addr));
8849 		if (!AST_SCHED_DEL(sched, peer->expire)) {
8850 			struct sip_peer *peer_ptr = peer;
8851 			ASTOBJ_UNREF(peer_ptr, sip_destroy_peer);
8852 		}
8853
8854 		destroy_association(peer);
8855
8856 		register_peer_exten(peer, 0);	/* Add extension from regexten=
setting in sip.conf */
8857 		peer->fullcontact[0] = '\0';
8858 		peer->useragent[0] = '\0';
8859 		peer->sipoptions = 0;
8860 		peer->lastms = 0;
8861 		peer->portinuri = 0;
8862 		pvt->expiry = 0; 

Issue History 
Date Modified    Username       Field                    Change               
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2011-02-10 12:39 ibercom        Note Added: 0131803                          
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