Re: [Serusers] SER has problems matching ACKs to replies

7 Apr 2003

Maxim,

neither did I find a reason why the ACK is not matched. I might be
wrong but my guess is that it is a config issue -- are you sure it
enters t_relay in your script?

-Jiri

At 09:19 PM 4/7/2003, Maxim Sobolev wrote:
...
 Folks,

I found that in the stateful mode, SER is having troubles matching
ACKs to negative replies when Vovida B2BUA (1.5.0) is used as one
UA, while Cisco ATA 186 as another one. Following is a dump of the
session illustrating the problem. As you can see, SER keeps
retransmiting 480, despite receiving properly formed ACKs. Does
anybody have any ideas what the problem might be?

-Maxim
P.S. I am also seeing in the logs the following warnings:

Apr  7 12:05:28 demo ser[86090]: WARNING: sip_msg_cloner: header body ignored: 4096

B2BUA->SER

INVITE sip:16045215277@demo.portaone.com:5060;transport=udp;user=phone SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
cisco-GUID: 200546447-2237180178-1764455078-2518034476
CSeq: 2 INVITE
Max-Forwards: 10
Expires: 300
Contact: <sip:380442466396@64.180.102.72:5061;user=phone>
User-Agent: PortaSIP (030401b)
Content-Type: application/sdp
Content-Length: 309
o=380442466396 20916528 20916528 IN IP4 192.168.1.20
s=ATA186 Call
c=IN IP4 193.111.9.226
t=0 0
m=audio 14000 RTP/AVP 4 8 0 101
a=rtpmap:4 G723/8000/1
a=rtpmap:8 PCMA/8000/1
a=rtpmap:0 PCMU/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=direction:active
a=oldmediaip:192.168.1.20

SER->B2BUA

SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Sip EXpress router (0.8.10 (i386/freebsd))
Content-Length: 0

SER->ATA

INVITE sip:16045215277@172.17.1.127:5060;user=phone;transport=udp SIP/2.0
Record-Route: <sip:16045215277@64.180.102.72;branch=0>
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bK56f9.3c3c97acad0bdb329284be13e26ccc54.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
cisco-GUID: 200546447-2237180178-1764455078-2518034476
CSeq: 2 INVITE
Max-Forwards: 9
Expires: 300
Contact: <sip:380442466396@64.180.102.72:5061;user=phone>
User-Agent: PortaSIP (030401b)
Content-Type: application/sdp
Content-Length: 309
o=380442466396 20916528 20916528 IN IP4 192.168.1.20
s=ATA186 Call
c=IN IP4 193.111.9.226
t=0 0
m=audio 14000 RTP/AVP 4 8 0 101
a=rtpmap:4 G723/8000/1
a=rtpmap:8 PCMA/8000/1
a=rtpmap:0 PCMU/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=direction:active
a=oldmediaip:192.168.1.20

ATA->SER

SIP/2.0 100 Trying
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bK56f9.3c3c97acad0bdb329284be13e26ccc54.0
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 0

ATA->SER

SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bK56f9.3c3c97acad0bdb329284be13e26ccc54.0
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 201
Content-Type: application/sdp
o=16045215277 1110 1110 IN IP4 172.17.1.127
s=ATA186 Call
c=IN IP4 64.180.102.72
t=0 0
m=audio 10000 RTP/AVP 4 101
a=rtpmap:4 G723/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

SER->B2BUA

SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 221
Content-Type: application/sdp
o=16045215277 1110 1110 IN IP4 172.17.1.127
s=ATA186 Call
c=IN IP4 64.180.102.72
t=0 0
m=audio 10000 RTP/AVP 4 101
a=rtpmap:4 G723/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=direction:active

ATA->SER

SIP/2.0 480 Temporarily Not Available
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bK56f9.3c3c97acad0bdb329284be13e26ccc54.0
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 0

SER->B2BUA

SIP/2.0 480 Temporarily Not Available
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 0

B2BUA->SER

ACK sip:16045215277@demo.portaone.com:5060;transport=udp;user=phone SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 70
Content-Length: 0

SER->ATA

ACK sip:16045215277@172.17.1.127:5060;user=phone;transport=udp SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bKbc52.5db2fe1211adfdd0d5db3db6e2295344.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 69
Content-Length: 0

SER->B2BUA

SIP/2.0 480 Temporarily Not Available
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 0

B2BUA->SER

ACK sip:16045215277@demo.portaone.com:5060;transport=udp;user=phone SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 70
Content-Length: 0

SER->ATA

ACK sip:16045215277@172.17.1.127:5060;user=phone;transport=udp SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bKbc52.5db2fe1211adfdd0d5db3db6e2295344.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 69
Content-Length: 0

SER->B2BUA

SIP/2.0 480 Temporarily Not Available
Via: SIP/2.0/UDP 64.180.102.72:5061
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 INVITE
Server: Cisco ATA 186  v2.15 ata18x (030401b)
Content-Length: 0

B2BUA->SER

ACK sip:16045215277@demo.portaone.com:5060;transport=udp;user=phone SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 70
Content-Length: 0

SER->ATA

ACK sip:16045215277@172.17.1.127:5060;user=phone;transport=udp SIP/2.0
Via: SIP/2.0/UDP 64.180.102.72;branch=z9hG4bKbc52.5db2fe1211adfdd0d5db3db6e2295344.0
Via: SIP/2.0/UDP 64.180.102.72:5061
To: <sip:121@64.180.102.72;user=phone>;tag=2698540533
From:
<sip:380442466396@64.180.102.72:5061;user=phone>;tag=4505a91c4165b3ffb1b4df0ff79c2904
Call-ID: 3135130751(a)192.168.1.20
CSeq: 2 ACK
Max-Forwards: 69
Content-Length: 0

[the last 3 repeat until timeout hits]
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--
Jiri Kuthan            http://iptel.org/~jiri/ 

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Re: [Serusers] SER has problems matching ACKs to replies