[SR-Users] getting fragmented packet when adding record-route header

Klaus Darilion klaus.mailinglists at pernau.at
Tue Mar 15 15:29:31 CET 2011


I prefer for ngrep traces (you could replace usernames/IP-addresses)

klaus

On 15.03.2011 10:59, Asgaroth wrote:
> Hi Klaus,
>
> On 15/03/2011 07:27, Klaus Darilion wrote:
>> But back to the original issues. You said, that the BYE (should be loose
>> routed) is not routed correctly back to the Asterisk server. Fix this -
>> as this is your real problem. Take a look at the contact headers and
>> in-dialog request URIs. Then you need not play around with faked
>> record-route headers.
>
> I was looking at this a little more. If I remove the manually added RR
> header, then, yes, the BYE message does not make it back to the
> originating asterisk media server. The problem, I think, occurs when the
> contact address is changed from the originating media server to the
> location server, at the proxy. I think it does this because of the
> "loose_route()" I force to load the "received" parameter from the
> "Route" header as passed from the location server. So, for example:
>
> [1] INVITE, from Asterisk, with contact address of "me at 1.1.1.1:5060",
> destined to location server "1.1.1.2:5060"
> [2] INVITE looked up on location server, then forwarded on to Proxy
> server "1.1.1.3:5060" with INVITE contact still "me at 1.1.1.1:5060" and
> "Route" parameter has"<1.1.1.3:5060;lr;received="sip:55.55.55.55:1234>"
> [3] When I perform the "loose_route" on the initial INVITE from location
> server (to enforce the route), then the contact address changes from
> "me at 1.1.1.1:5060" to "me at 1.1.1.2:5060". This is where I think the issue
> comes in why the BYE message only makes it back to the location server
> and not the asterisk server.
>
> The problem is, is that I dont know how else to load the "Route" as
> defined in the route header. I have the "use_received" parameter set for
> the path module, but it does not seem to change the destination uri to
> that defined in the the received parameter of the route header on the
> initial invite (unless I perform a loose_route, then it will load it).
> The documentation for the path module seems to imply that it will use
> the received parameter in the Route header that is for the local server.
> But it does not seem to be doing that by default. Do I need to perform a
> loose_route before relaying to load the route?
>
>
>
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