Hi,
I need to manage the PRACK side application, I set
NUTAG_APPL_METHOD("PRACK"), With this configuration are passed to the
application the 183.
How do I configure the stack to deliver the application only the PRACK?,
Thanks,
Beppe
2012/3/14 Timo Bruhn <voip_v...@web.de>:
> Hi Nauman,
>
> did you find a solution for the problem when forking is combined with PRACK?
> Currently we are running into same problems with sofia-sip connecting to a
> server that uses forking.
>
> Seems that disabling PRACK and soa engine works. But what if PRACK is
> required?
>
> Thanks,
> Timo
>
>
>> Hi,
>>
>> Got a bit further with this, reason that the 200OK ( to INVITE) is being
>> discarded is because of this code :
>>
>> static int nua_invite_client_preliminary(nua_client_request_t *cr,
>> int status, char const *phrase,
>> sip_t const *sip)
>> {
>> nua_handle_t *nh = cr->cr_owner;
>> nua_dialog_usage_t *du = cr->cr_usage;
>> nua_session_usage_t *ss = nua_dialog_usage_private(du);
>>
>> assert(sip);
>>
>> if (ss && sip && sip->sip_rseq) {
>> /* Handle 100rel responses */
>> sip_rseq_t *rseq = sip->sip_rseq;
>>
>> /* Establish early dialog - we should fork here */
>> if (!nua_dialog_is_established(nh->nh_ds)) {
>> nta_outgoing_t *tagged;
>>
>> nua_dialog_uac_route(nh, nh->nh_ds, sip, 1, 1);
>> nua_dialog_store_peer_info(nh, nh->nh_ds, sip);
>>
>> /* Tag the INVITE request */
>> tagged = nta_outgoing_tagged(cr->cr_orq,
>> nua_client_orq_response, cr,
>> sip->sip_to->a_tag, sip->sip_rseq);
>> if (tagged) {
>> nta_outgoing_destroy(cr->cr_orq), cr->cr_orq = tagged;
>> }
>> else {
>> cr->cr_graceful = 1;
>> ss->ss_reason = "SIP;cause=500;text=\"Cannot Create Early Dialog\"";
>> }
>> }
>>
>>
>> When we get a 183 reliable response Sofia creates an early dialog and
>> creates a new tagged INVITE request
>>
>> if (tagged) {
>> nta_outgoing_destroy(cr->cr_orq)
>>
>> It looks like it marks the original request for destruction, the problem is
>> when a 200OK comes in with a different tag, it looks as if its matched
>> against the original transaction which is marked for > destruction and so is
>> discarded by the code I posted initially in outgoing_recv in nta.c
>>
>>
>> We are handling all media (SDP) ourselves and have set PRACK to be one of
>> the methods our app handles. We are using the nua API.
>>
>> Can Pekka or someone say whether PRACK and forking is supported with the
>> way we are using the Stack. We've seen some posts saying there are various
>> bugs.
>>
>> When PRACK is not used the first 200OK received is passed to the application
>> with cancel sent to the others. This is the behaviour we would like even
>> when PRACK is used. However it seems > that when the first 183 reliable is
>> received this results in subsequent 200OK from other forks to be discarded.
>> We just want the first 200OK final response to be passed to our application
>> > irrespective of which fork its from and are happy for CANCEL to be sent to
>> others.
>>
>> Any comments most appreciated.
>> Thanks
>>
>
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