[SR-Users] Rtpproxy - IPv4/v6 Translation and earlier removing of session

[Daniel-Constantin Mierla]

Hello,

On 4/11/13 12:53 PM, Jakub Hrabovský wrote:
>
> Hi,
>
> I started working on IPv4/IPv6 Translation issue in Kamailio by using 
> rtpproxy as Media relay last year in my Bachelor-project.
>
> I solved the trouble with Translation between IPv4 and IPv6 clients, 
> where IPv4 client used public IPv4 address. Now I am working on the 
> issue, where
>
> IPv4 client uses private IPv4 (is behind NAT in local network), so I 
> have to provide IPv4/v6 and NAT for all messages in one call.
>
> My topology consists of:
>
> Kamailio 3.3.4 - SIPproxy (supports IPv4/IPv6, public IPv4 and IPv6 
> addresses) - makes NAT translation, works as SIPoutbound proxy and 
> communicates with rtpproxy (v1.2.1),
>
> Kamailio 3.3.4 - SIPprotocol GW (== SIP bridge) - translates IPv4 
> messages to IPv6 (and IPv6 to IPv4), uses other rtpproxy, has public 
> IPv4 and IPv6 addresses
>
> + only IPv4 and only IPv6 clients (Linphone v3.5.2)
>
> I assume, that both (IPv4 and IPv6) clients are in the same SIP domain.
>
> I solve IPv4-IPv6 translation so, that each message from IPv6 client 
> goes to SIP proxy and (if needed) is forwarded to SIP Protocol GW. 
> Translated medssage is then forwarded back to SIP proxy and from that 
> to callee.
>
> Here i have some problems:
>
> -1.) IPv6 client doesnt respond to invites from IPv4 client. The 
> messages are ignored at IPv6 client.
>
does the SIP request gets to client? Can you paste here the INVITE?

> -2.) Rtpproxy on the machine with SIP protocol gateway (which provides 
> IPv4/v6 translation) removes session earlier than I need (usually 
> after 30 seconds of call) and the result is call break.
>
> this issue doesnt appear for rtpproxy on SIP proxy. I dont know what 
> causes this behavior, if it is only in some parameters, witch i have 
> to set, or it is bug in rtpproxy or ....
>
This sounds like mis-routed ACK. RTPPRoxy does not clear sessions by itself.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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