Enhancement #1621
closed
iPhone: Groundwire: background: too low expiration interval (300) forced by the server
Added by Pro Backup over 12 years ago.
Updated over 11 years ago.
Description
Using SIP/TLS is is not nice that the sip2sip server force an expiration interval of 300 seconds. This value is so low that I am not able to receive incoming calls in background mode. Please increase this value to at least 1700 seconds for iPhone usage.
Files
transport protocol = tls (sips) @ proxy.sipthor.net:5061
Please force least 600 seconds (10 minutes).
And better to not not force an expiration at all (let the client device choose).
Strange is that sometimes even an Expires: 600 is is received from proxy.sipthor:
2012-05-04T22:46:36.617Z
Received:
192.168.10.220:56144 <- proxy.sipthor.net/81.23.228.129:5061 [proxy.sipthor.net/81.23.228.129:5061; 81.23.228.129:5061]
694
SIP/2.0 200 OK
Record-Route: <sip:81.23.228.129;r2=on;lr;ftag=6E51B7C670DF87F0AC08948D9D01FAAE>
Record-Route: <sip:81.23.228.129:5061;transport=tls;r2=on;lr;ftag=6E51B7C670DF87F0AC08948D9D01FAAE>
Via: SIP/2.0/TCP 192.168.10.220:56144;received=82.171.105.23;branch=z9hG4bKV4uqYHOF3IeEYASw;rport=56144
From: "31157112149@sip2sip.info" <sips:2233513173@sip2sip.info>;tag=6E51B7C670DF87F0AC08948D9D01FAAE
To: "31157112149@sip2sip.info" <sips:2233513173@sip2sip.info>;tag=64b03df7c1a4aac2e7aeb74322defa92-4566
Call-ID: 4124CED50732644C28941D6985D2B0A2A725309C
CSeq: 2 SUBSCRIBE
Expires: 600
Contact: <sip:presence@85.17.186.7>
Server: SIP Thor on OpenSIPS XS 1.8.0
Content-Length: 0
- Status changed from New to To be closed
There is nothing strange about an Expire header related to a Subscribe packet. This trace has nothing to do with a Register message, is a response for a Subscribe as the Cseq indicates.
About registration period there is nothing good or wrong about 300 seconds, end-point should just honor the server indication as per standard.
- Status changed from To be closed to Closed
Default expiration interval has been set to 3600 seconds.
Thank you, 1. for re-considering and 2. for increasing the expires value.
Now the iOS SIP applications can go to background (= wake on TCP) and save power.
The default expires value of 3600 seconds, results in re-registering usually at 50% of this interval. In reality the iPhone wakes every 9 till 26 minutes (excluding network changes) to re-register.
An example based on our Groundwire log:
===
19:18-19:41 = 23 min. - we are awake
19:41-20:07 = 26 min. - we are awake
20:07-20:32 = 25 min. - we are awake
20:32-20:34 = 02 min. - onNetworkStatusChanged
20:34-20:57 = 23 min. - we are awake
20:57-21:06 = 09 min. - we are awake
21:06-21:15 = 09 min. - we are awake
===
Please allow a larger expires value, by honouring the expires value that the SIP client requests. Because the Groundwire client is smart enough to re-register on network changes itself.
The request is not to set a larger default expires value, but to honour the value the SIP clients asks.
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