[Users] BYE retransmits too quick!

[Greg Fausak]

I'm doing an interop test with a well known
ITPS, they are kicking back these BYE retransmits, like:

     SIP MESSAGE 18       216.138.115.30:5061(www.testnode-3.com) ->
209.247.16.2:5060(deneps551.Denver1)
     UDP Frame 18       17/Feb/06 17:09:36.8142
TimeFromPreviousSipFrame=0.0010 TimeFromStart=8.0692
BYE sip:209.247.16.2:5060 SIP/2.0
Record-Route: <sip:216.138.115.30:5061;ftag=245-192.168.10.1;lr>
Record-Route: <sip:216.138.115.27;ftag=245-192.168.10.1;lr>
Via: SIP/2.0/UDP 216.138.115.30:5061;branch=z9hG4bK036d.a99621d6.0
Via: SIP/2.0/UDP 216.138.115.27;branch=z9hG4bK036d.1fe4ca41.0
Via: SIP/2.0/UDP 198.41.9.65:5060;branch=z9hG4bK245-192.168.10.1.256
Via: SIP/2.0/UDP 192.168.10.23:5060;branch=z9hG4bK1371-192.168.10.23.1374
From:  <sip:+18663072489 at 216.138.115.30:5061>;tag=245-192.168.10.1
To: "Unknown" <sip:+17205626376 at 209.247.16.2>;tag=VPSF50603522629634
Call-ID: DEN05020060217230928060500 at 209.244.48.214
CSeq: 101 BYE
Max-Forwards: 67
Record-Route: <sip:198.41.9.65:5060>
Contact: "8663072489" <sip:+18663072489 at 198.41.9.65:1074>


     SIP MESSAGE 19       216.138.115.30:5061(www.testnode-3.com) ->
209.247.16.2:5060(deneps551.Denver1)
     UDP Frame 19       17/Feb/06 17:09:36.8424
TimeFromPreviousSipFrame=0.0282 TimeFromStart=8.0974
BYE sip:209.247.16.2:5060 SIP/2.0
Record-Route: <sip:216.138.115.30:5061;ftag=245-192.168.10.1;lr>
Record-Route: <sip:216.138.115.27;ftag=245-192.168.10.1;lr>
Via: SIP/2.0/UDP 216.138.115.30:5061;branch=z9hG4bK036d.a99621d6.0
Via: SIP/2.0/UDP 216.138.115.27;branch=z9hG4bK036d.1fe4ca41.0
Via: SIP/2.0/UDP 198.41.9.65:5060;branch=z9hG4bK245-192.168.10.1.256
Via: SIP/2.0/UDP 192.168.10.23:5060;branch=z9hG4bK1371-192.168.10.23.1374
From:  <sip:+18663072489 at 216.138.115.30:5061>;tag=245-192.168.10.1
To: "Unknown" <sip:+17205626376 at 209.247.16.2>;tag=VPSF50603522629634
Call-ID: DEN05020060217230928060500 at 209.244.48.214
CSeq: 101 BYE
Max-Forwards: 67
Record-Route: <sip:198.41.9.65:5060>
Contact: "8663072489" <sip:+18663072489 at 198.41.9.65:1074>


Why is the BYE being sent so quickly?
This is an intermediate UAS proxy, and every now and
then it spits out an extra BYE like this.  Shouldn't
this wait 500ms before doing a retry? The rest of the trace
is clean.  I can forward the whole thing if there is any interest.

-g

--
Greg Fausak
greg at thursday.com