[Serusers] Problems with ACK

Ricardo Martinez rmartinez at magenta.cl
Tue Mar 27 16:02:35 CEST 2007


Hello List.
	I have a problem with an ACK message for a CANCEL.  I'm just wondering if anyone knows what could be happening here.  It seems that SER can't route or  "understand" this ACK

ACK sip:0299005622408196 at sipvoiss.desa.redvoiss.net SIP/2.0.
v: SIP/2.0/UDP 192.168.1.100:5060;branch=z9hG4bK2861608023.
f: "5502203289" <sip:5502203289 at sipvoiss.desa.redvoiss.net>;tag=1349608987.
t: <sip:0299005622408196 at sipvoiss.desa.redvoiss.net>;tag=f146818fa4.
i: 5c83a04822964085e07aabd210e9d72f at 192.168.1.100.
CSeq: 4 ACK.
l: 0.

Could be something with the COMPACT form ???

This is the log from the debug : 

Mar 23 12:18:10 sipvoiss ser[5430]: t_lookup_request: start searching: hash=52251, isACK=1 
Mar 23 12:18:10 sipvoiss ser[5430]: DEBUG: RFC3261 transaction matching failed 
Mar 23 12:18:10 sipvoiss ser[5430]: DEBUG: t_lookup_request: no transaction found 
Mar 23 12:18:10 sipvoiss ser[5430]: SER: forwarding ACK  statelessly  
Mar 23 12:18:10 sipvoiss ser[5430]: DEBUG: mk_proxy: doing DNS lookup... 
Mar 23 12:18:10 sipvoiss ser[5430]: get_record: lookup(_sip._udp.sipvoiss.desa.redvoiss.net, 33) failed 
Mar 23 12:18:10 sipvoiss ser[5430]: sip_resolvehost: no SRV record found for sipvoiss.desa.redvoiss.net, trying 'normal' lookup... 
Mar 23 12:18:10 sipvoiss ser[5430]: check_via_address(10.0.0.248, 192.168.1.100, 0) 
Mar 23 12:18:10 sipvoiss ser[5430]: Sending: ACK sip:0299005622408196 at sipvoiss.desa.redvoiss.net SIP/2.0^M Max-Forwards: 10^M Record-Route: <sip:10.0.0.246;ftag=2639303304;lr=on>^M Via: SIP/2.0/UDP 10.0.0.246;branch=0^M v: SIP/2.0/UDP 192.168.1.100:5060;received=10.0.0.248;branch=z9hG4bK365542204^M f: "5502203289" <sip:5502203289 at sipvoiss.desa.redvoiss.net>;tag=2639303304^M t: <sip:0299005622408196 at sipvoiss.desa.redvoiss.net>;tag=2746a580a4^M i: 81983e61d980fd3ef0046dafe9518284 at 192.168.1.100^M CSeq: 10 ACK^M l: 0^M ^M . 
Mar 23 12:18:10 sipvoiss ser[5430]: orig. len=338, new_len=477, proto=1 
Mar 23 12:18:10 sipvoiss ser[5430]: DEBUG:destroy_avp_list: destroying list (nil) 
Mar 23 12:18:10 sipvoiss ser[5430]: receive_msg: cleaning up 

What does it means : "RFC3261 transaction matching failed" and why ???


The weird situation happend when almost the same message arrives without the Compact Form : 

V102
ACK sip:0299005622408196 at sipvoiss.desa.redvoiss.net SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.237:5060;branch=z9hG4bK2364391837.
From: "5502203289" <sip:5502203289 at sipvoiss.desa.redvoiss.net>;tag=827237367.
To: <sip:0299005622408196 at sipvoiss.desa.redvoiss.net>;tag=6b466391a4.
Call-ID: 43b2cc325b7fbe9f8790e4cee01dc4b3 at 10.0.0.237.
CSeq: 2 ACK.
Content-Length: 0.

This message works ok!.
....
...
Mar 23 16:30:06 sipvoiss ser[5974]: DEBUG: RFC3261 transaction matched, tid=424819551 
Mar 23 16:30:06 sipvoiss ser[5974]: DEBUG: t_lookup_request: transaction found (T=0x404ce3e8) 
Mar 23 16:30:06 sipvoiss ser[5974]: DEBUG: cleanup_uac_timers: RETR/FR timers reset 
Mar 23 16:30:06 sipvoiss ser[5974]: DEBUG: add_to_tail_of_timer[2]: 0x404ce430 
Mar 23 16:30:06 sipvoiss ser[5974]: DEBUG:destroy_avp_list: destroying list (nil) 
Mar 23 16:30:06 sipvoiss ser[5974]: receive_msg: cleaning up 

Can someone give me a hand here?
Thanks in advance

Regards,
Ricardo Martinez-

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