[SR-Users] [NAT] BYE not received to caller

[Pascal Maugeri]

Klaus

I attached the ngrep you asked me to this email.

Regards,
Pascal



On Wed, Apr 14, 2010 at 12:21 PM, Klaus Darilion <
klaus.mailinglists at pernau.at> wrote:

> The contact after fix_nated_contact() should also contain ;transport=tcp.
> Thus, Kamailio should relay the BYE with TCP.
>
> Can you show an ngrep dump (ngrep -W byline -t -q -P "" port 5060) of the
> problematic scenario?
>
> regards
> klaus
>
> PS: A more standard-conform way of rewriting the SDP is to use the
> add_contact_alias() and handle_ruri_alias() functions:
>
> http://sip-router.org/docbook/sip-router/branch/master/modules_k/nathelper/nathelper.html#id2601711
>
> regards
> klaus
>
> Am 14.04.2010 12:06, schrieb Pascal Maugeri:
>
>> Hi
>>
>> I need some "guidelines" to troubleshoot the following issue:
>>
>> a) A is behind NAT
>>
>> b) B is not behind NAT
>>
>> c) A calls B, SIP INVITE is sent over TCP
>>
>> d) A's firewall does NAT and changes the source port to let's say p1
>>
>> e) B releases the call and sends BYE over UDP
>>
>> f) Kamailio sends the BYE to A, over UDP, to the NATed source port p1 ?!
>>
>> 2 comments:
>> - This scenario works perfectly when A is the one who disconnects the
>> call. and of course when no NAT is involved everything works ok
>> - if works when I comment the line "fix_nated_contact()" in the
>> route[NAT] block:
>>
>> route[NAT]{
>> #!ifdef WITH_NAT
>>         force_rport();
>>         #if (nat_uac_test("19")) {
>>         if (nat_uac_test("3")) {
>>                 if (method=="REGISTER") {
>>                         setbflag(10);
>>                         fix_nated_register();
>>                 } else {
>>                         #fix_nated_contact();
>> [...]
>>
>> Any hint is very welcome.
>>
>> Cheers
>> Pascal
>>
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>
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