possible bug with refresher timeout

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The caller or the UAC?

In http://www.ietf.org/rfc/rfc4028.txt page 9 we can read:

...

 The 'refresher' parameter will be present in the Session-Expires header field,
   indicating who will perform the refreshes.  The UAC MUST set the
   identity of the refresher to the value of this parameter.  If the
   parameter contains the value 'uac', the UAC will perform them.

...

But probably


2011/11/8 Joegen E. Baclor <joegen.baclor at gmail.com>

> **
> The caller needs to send the re-invite.  A timeout after 568 with a
> negotiated expires of 600 is in order.
>
>
>
> On 11/08/2011 07:51 PM, segalion wrote:
>
> I?ve been trying pjsua succesfully, and seems that I have a problem with
> incoming calls, and refresher interval...
>
>
> This is the brief:
>
> 12:07:28.798 <- The incoming INVITE has "Session-Expires: 600"
> 12:07:28.798 -> SIP/2.0 100 Trying
> 12:07:31.954  -> SIP/2.0 200 OK with "x: 600;refresher=uac"
> 12:07:32.110 <- ACK
>
>
> The call is stablished...
>
>
> Some registers
> 12:10:14.019 -> REGISTER
> 12:10:14.159 <- SIP/2.0 200 OK
> ...
>
>
> And now the problem...
>
>  12:16:59.946    dlg00c29d18  No session refresh received after 568s
> (expiration period=600s), stopping session now!
>  12:16:59.946   -> BYE
>  12:16:59.993   <- SIP/2.0 200 OK
>  12:16:59.993    pjsua_app.c  Call 0 is DISCONNECTED [reason=408 (Request
> Timeout)]
>
>
> An the call is closed in 10 minutes by pjsua !!!
>
> Please, tellme if refresher=uac ? who has to make the reinvite? pjsua or
> network side?
>
> Thanks in advance
>
>
>
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>
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>
>
>
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