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Lambert98
Brekeke Junior Member
Joined: 03 Apr 2008
Posts: 6
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 Posted: Fri Aug 07, 2009 3:22 am Post subject: B2BUA: ACK for RE-INVITE contains wrong branch |
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1. Brekeke Product Name and version:
SIP Server 2.37.4
2. Java version:
3. OS type and the version:
4. UA (phone), gateway or other hardware/software involved:
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :
6. Your problem:
The ACK for a RE_INVITE contains same branch as the RE_INVITE
-> same transaction : ACK is ignored and OK is send until timeout
Traces:
initial INVITE:
ZGvE5}L3INVITE sip:5006@172.24.5.159;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-15149f755fde85e7-1---d8754z-
!ZGE+as*INVITE sip:5006@172.24.5.154:5070 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.159:5060;rport;branch=z9hG4bKa8993331addb381431c22-64254860-e2c0d829
ZG!E@SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.24.5.159:5060;rport=5060;branch=z9hG4bKa8993331addb381431c22-64254860-e2c0d829;received=172.24.5.159
vZGE+SS5SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-15149f755fde85e7-1---d8754z-
ZGvE@eTIACK sip:5006@172.24.5.159:5060 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-4618044a1c18d3d3-1---d8754z-
!ZGE,%ACK sip:5006@172.24.5.154:5070 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.159:5060;rport;branch=z9hG4bK94fca43df022561431c22-64254860-a14c453d
Re-INVITE
ZGvEAwC+INVITE sip:5006@172.24.5.159:5060 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-e869f48e9f027bc4-1---d8754z-
!ZGE*'INVITE sip:5006@172.24.5.154:5070 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.159:5060;rport;branch=z9hG4bKcbe79e218904f51431c22-64254860-15c73934
ZG!E0@USIP/2.0 200 OK
Via: SIP/2.0/UDP 172.24.5.159:5060;rport=5060;branch=z9hG4bKcbe79e218904f51431c22-64254860-15c73934;received=172.24.5.159
vZGE*JSIP/2.0 200 OK
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-e869f48e9f027bc4-1---d8754z-
ZGvE[JACK sip:5006@172.24.5.159:5060 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.160:5060;branch=z9hG4bK-d8754z-4ae409aee10d745c-1---d8754z-
!ZGE+xACK sip:5006@172.24.5.154:5070 SIP/2.0
Via: SIP/2.0/UDP 172.24.5.159:5060;rport;branch=z9hG4bKcbe79e218904f51431c22-64254860-15c73934 |
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tuie2
Brekeke Talented
Joined: 23 Jan 2009
Posts: 57
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| Posted: Tue Aug 11, 2009 4:13 pm Post subject: |
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Who sent such an ACK packet?
Can you post these packets in http://pcapr.net/? |
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Lambert98
Brekeke Junior Member
Joined: 03 Apr 2008
Posts: 6
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tuie2
Brekeke Talented
Joined: 23 Jan 2009
Posts: 57
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| Posted: Mon Aug 17, 2009 10:35 am Post subject: |
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Lambert98,
I will look at it. |
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tuie2
Brekeke Talented
Joined: 23 Jan 2009
Posts: 57
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| Posted: Wed Aug 19, 2009 4:50 pm Post subject: |
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| Does the same issue happen even if you don't use B2B UA mode at Brekeke SIP Server? |
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Lambert98
Brekeke Junior Member
Joined: 03 Apr 2008
Posts: 6
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| Posted: Thu Aug 20, 2009 4:45 am Post subject: |
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| No -- in 'normal' mode it works well. The ACK's are correct. Everything is working as expected |
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tuie2
Brekeke Talented
Joined: 23 Jan 2009
Posts: 57
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| Posted: Thu Aug 20, 2009 11:42 pm Post subject: |
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I checked it with a Brekeke developer.
He said it is a bug in the B2B-UA mode.
It will be fixed in a future version. |
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