Hi Everyone,
I am really stuck here. I really need help!
I receive the following ACK request in SER from a Linksys/PAP user agent
that SER should forward to the destination User Agent: 2010000002.
ACK sip:2010000002@10.1.10.65:5060 SIP/2.0
Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5fb5b16;rport
From: 2224440133 sip:2224440133@host.domain.com;tag=692c5bafde7b5655o0
To: sip:2224449999@host.domain.com;tag=3b968d2d
Call-ID: c813c237-8673e16d@172.16.15.51
CSeq: 101 ACK
Max-Forwards: 70
Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr, sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr
Contact: 2224440133 sip:2224440133@172.16.15.51:5060
User-Agent: Linksys/PAP2-3.1.5(LS)
Content-Length: 0
But SER's loose_route incorrectly modifies this ACK as follows:
ACK sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr SIP/2.0
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5fb5b16;rport=5060
From: 2224440133 sip:2224440133@host.domain.com;tag=692c5bafde7b5655o0
To: sip:2224449999@host.domain.com;tag=3b968d2d
Call-ID: c813c237-8673e16d@172.16.15.51
CSeq: 101 ACK
Max-Forwards: 16
Route:
Contact: 2224440133 sip:2224440133@172.16.15.51:5060
User-Agent: Linksys/PAP2-3.1.5(LS)
Content-Length: 0
Which causes the ACK to keep looping through SER:
ACK sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr SIP/2.0
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5fb5b16;rport=5060
From: 2224440133 sip:2224440133@host.domain.com;tag=692c5bafde7b5655o0
To: sip:2224449999@host.domain.com;tag=3b968d2d
Call-ID: c813c237-8673e16d@172.16.15.51
CSeq: 101 ACK
Max-Forwards: 15
Route:
Contact: 2224440133 sip:2224440133@172.16.15.51:5060
User-Agent: Linksys/PAP2-3.1.5(LS)
Content-Length: 0
ACK sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr SIP/2.0
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Record-Route: sip:10.1.10.65;ftag=692c5bafde7b5655o0;lr=on
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 10.1.10.65;branch=0
Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5fb5b16;rport=5060
From: 2224440133 sip:2224440133@host.domain.com;tag=692c5bafde7b5655o0
To: sip:2224449999@host.domain.com;tag=3b968d2d
Call-ID: c813c237-8673e16d@172.16.15.51
CSeq: 101 ACK
Max-Forwards: 14
Route:
Contact: 2224440133 sip:2224440133@172.16.15.51:5060
User-Agent: Linksys/PAP2-3.1.5(LS)
Content-Length: 0
I am really stuck.
Can anyone tell me what is happening?!
Thanks
ramin