[SR-Users] parallel forking

[Yuriy Gorlichenko]

I found INFO about "b" flag for rtpproxy-ng module. It may solve my
porblem, but as I understand, rtpengine not support this flag.
I thought about adiing rtpproxy handling after append_branch (something
like branch_route) but con not find any info how to use it after
branching... Does anybody help me to solve this issue, or give me an advice
about this issue? Thks

2014-10-17 20:41 GMT+04:00 Yuriy Gorlichenko <ovoshlook at gmail.com>:

> Forget some things:
> All calls going form asterisk viaUDP.
> t_relay calling out of loop. At the end.
>
> When t_relay at loop first packet goes great but INVITE to second
> destinationd not going and ended with ERROR "can't generate 200 reply when
> a final 200 was sent out"
>
> 2014-10-17 20:33 GMT+04:00 Yuriy Gorlichenko <ovoshlook at gmail.com>:
>
>> Hello. I try to do parallel  fork calls to endpoints that have same
>> username and different destination URI. Logic of my script:
>> checking location table for rows with needed account
>> get info from contact at loop
>>
>> for every step
>>
>> check technology (sip or ws)
>> append_branch with existing destination for this account
>> rewrite packet with rtpengine to needed technology
>>
>>
>> forward packets via t_relay
>>
>>
>>
>> sql_query("ca", "select contact from location where username='$tU'",
>> "ra");
>> xlog("rows: $dbr(ra=>rows) cols: $dbr(ra=>cols)\n");
>>  if($dbr(ra=>rows)>0){
>> $var(i)=0;
>>  while($var(i)<$dbr(ra=>rows)){
>>  xlog("L_INFO","SQL query return contact {$dbr(ra=>[$var(i),0])} for
>> {$tU} at step {$var(i)}\n");
>>  if ($dbr(ra=>[$var(i),0])=~"transport=ws"){
>> xlog("L_INFO", "This is a Websocket call to endpoint");
>> sql_pvquery("ca", "select received from location where
>> contact='$dbr(ra=>[$var(i),0])'","$var(recieved)");
>> xlog("L_INFO","SQL query return recieved {$var(recieved)} for {$tU}\n");
>> $du=$var(recieved);
>> xlog("L_INFO", "Request going FROM ASTERISK to WS. Destination is
>> {$du}\n");
>> xlog("L_INFO","Websocket Destination URI is {$var(recieved)} for
>> {$tU}\n");
>> rtpproxy_manage("froc+SP");
>> t_on_reply("REPLY_FROM_WS");
>> append_branch("sip:$tU@$du");
>> $var(i) = $var(i) + 1;
>> }
>>  else
>> {
>> xlog("L_INFO", "This is a classic UDP call to endpoint");
>>  $du="sip:"+$(dbr(ra=>[$var(i),0]){s.select,1,@});
>> xlog("L_INFO","Classic Destination URI is {$dbr(ra=>[$var(i),0])} for
>> {$tU}\n");
>> rtpproxy_manage("co");
>> t_on_reply("MANAGE_CLASSIC_REPLY");
>> append_branch("sip:$tU@$du");
>> $var(i) = $var(i) + 1;
>> }
>> #append_branch("sip:$tU@$du");
>>  }
>> }
>> return 1;
>>
>>
>> So it customised schema of standart example
>>
>>
>>   seturi("sip:a at example.com");
>>   append_branch("sip:b at example.com");
>>   append_branch("sip:c at example.com");
>>   append_branch("sip:d at example.com");
>>
>>   t_relay();
>>
>> At my test I have 2 endpoints with WS and UDP phones (at fist step ir WS
>> and 2 step it UDP). when I do these steps (at my script) I see packet at
>> TCP dump and saw that sended only one packet to UDP but body of packet is
>> WS. Then I saw log of kamailio. I see that at second step packet changed
>> body to WS body (so strange because other steps before and after goes for
>> UDP (as at logic of script))
>>
>> What I need to do for send parallel INVITES to multiple endpoints
>> correctly? Thanks
>>
>>
>
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