28 Sep
2006
28 Sep
'06
4:14 p.m.
Probably OPENSER-ONE does not recognize the BYE as targeted to itself
(due to misconfiguration of listen|alias parameters) and that's why it
keeps on sending to itself the message..
It's like OPENSER-ONE checks the Req-URI|Route domainname|IP and
says..hey that's not for me, let's forward it to the next route..which
happens to be itself....and this happens until Max-Forwards reaches
the lower limit...
Try to add
alias=OPENSER-ONE.example.com:5060
in your config file and see what happens..
Samuel.
2006/9/28, Mark Kent <mark(a)noc.mainstreet.net>et>:
I wonder if anyone on this list is open to a thought
exercise?
I'm trying to put together a cogent message about this,
but in the meantime:
I've got a situation where my openser box seems to route stuff to itself
and it loops around and around until I get the classic "Too Many Hops" error.
This seems to happen most often on BYE, although I've seen an ACK do it too.
Here is a small ngrep snippet, after
PHONE has called OPENSER-ONE who statelessly relays to OPENSER-TWO
who t_relays to PSTNGW, and then the pstn user hangs-up:
U 23:03:53.254382 PSTNGW:5060 -> OPENSER-TWO:5060
BYE sip:JoeUser@OPENSER-ONE.example.com:5060;user=phone SIP/2.0
Call-ID: callid@PHONE
From: <sip:18005551212@OPENSER-TWO.example.com:5060>;tag=26674
To: "Joe User" <sip:JoeUser@OPENSER-ONE.example.com>;tag=thetag
Content-Length: 0
CSeq: 1 BYE
Via: SIP/2.0/UDP PSTNGW:5060;branch=thebranch
Route: <sip:JoeUser@OPENSER-ONE:5060>
Max-Forwards: 70
#
U 23:03:53.255013 OPENSER-TWO:5060 -> OPENSER-ONE:5060
BYE sip:JoeUser@OPENSER-ONE:5060 SIP/2.0
Record-Route: <sip:JoeUser@OPENSER-TWO;lr=on;ftag=26674>
Call-ID: callid@PHONE
From: <sip:18005551212@OPENSER-TWO.example.com:5060>;tag=26674
To: "Joe User" <sip:JoeUser@OPENSER-ONE.example.com>;tag=thetag
Content-Length: 0
CSeq: 1 BYE
Via: SIP/2.0/UDP OPENSER-TWO;branch=otherbranch.0
Via: SIP/2.0/UDP PSTNGW:5060;branch=thebranch
Max-Forwards: 69
Route: <sip:JoeUser@OPENSER-ONE.example.com:5060;user=phone>
Right here OPENSER-ONE freaks out, and the delay causes
OPENSER-TWO to re-transmit:
#
U 23:03:53.611227 OPENSER-TWO:5060 -> OPENSER-ONE:5060
BYE sip:JoeUser@OPENSER-ONE:5060 SIP/2.0
Record-Route: <sip:JoeUser@OPENSER-TWO;lr=on;ftag=26674>
Call-ID: callid@PHONE
From: <sip:18005551212@OPENSER-TWO.example.com:5060>;tag=26674
To: "Joe User" <sip:JoeUser@OPENSER-ONE.example.com>;tag=thetag
Content-Length: 0
CSeq: 1 BYE
Via: SIP/2.0/UDP OPENSER-TWO;branch=otherbranch.0
Via: SIP/2.0/UDP PSTNGW:5060;branch=thebranch
Max-Forwards: 69
Route: <sip:JoeUser@OPENSER-ONE.example.com:5060;user=phone>
OK, so who on this list is good enough to be able to suggest plausible
theories about what my openser.cfg flaw is? If you don't want to
speculate openly on the list then please send me a direct email.
Thanks,
-mark
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