[OpenSIPS-Users] Problem with double field P-Asserted-Identity

[Bogdan-Andrei Iancu]

Hi Matteo,

yes because arming the branch_route will be on for all branches of the 
transaction - so the branch_route() will be triggered even for the 
branch you create in the failure_route -> one PAI in failure route and 
one in branch route.

So, you can remove the PAI manipulation from the failure_route() and let 
only branch_route to do the job.

Regards,
Bogdan

mmarzuola at interfree.it wrote:
> Hi Bogdan
> I tried to follow your directions, but the problem persists.
>
> This is what I did:
>
> In the route where the function do_routing is called I inserted:
>
> ########################################################################
> # Request route 'invite-to-external'
> ########################################################################
> route[6] {
>  if(isflagset(20)) {
>  xlog("L_INFO", "Call to foreign domain - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  route(2);
>  exit;
>  }
>  if(!isflagset(23)) {
>  # don't allow calls relaying from PSTN to PSTN, if not explicitely forwarded
>  if(uri=~ "^sip:[0-9]+@") {
>  xlog("L_INFO", "Call to PSTN\n");
>  do_routing();
>  xlog("L_INFO", "first attempt is $ru, attributes are $avp(s:drattrs)\n");
>  if(!goes_to_gw()) {
>  xlog("L_ERR", "No PSTN gateways available - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  sl_send_reply("503", "PSTN Termination Currently Unavailable");
>  exit;
>  }
>  setflag(21);
>
>  t_on_branch("1");
>  t_on_failure("2");
>  route(2);
>  exit;
>  }
>  }
>
>  xlog("L_INFO", "Call to unknown user - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  sl_send_reply("404", "User Not Found");
>  exit;
> }
>
> In the branch_route:
>
> branch_route[1] {
>  if(is_present_hf("P-Asserted-Identity")) {
>  xlog("L_INFO", "Removing P-Asserted-Identity in branches\n");
>  remove_hf("P-Asserted-Identity");
>  }
>  if(is_present_hf("Remote-Party-ID")) {
>  remove_hf("Remote-Party-ID");
>  }
>  if(is_avp_set("$avp(s:caller_cli)/s")) {
>  xlog("L_INFO", "Set caller CLI '$avp(s:caller_cli)' - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  append_hf("P-Asserted-Identity: <$avp(s:caller_cli)>\r\n");
>  }
>  route(14);
> }
>
> ########################################################################
> # Request route 'clir'
> ########################################################################
> route[14] {
>  if(isflagset(28) && !isflagset(27)) {
>  setflag(27);
>
>  xlog("L_INFO", "Anonymize caller - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  uac_replace_from("Anonymous","sip:anonymous at anonymous.invalid");
>  if(is_present_hf("Privacy")) {
>  remove_hf("Privacy");
>  }
>  append_hf("Privacy: id\r\n");
>  }
> }
>
> ########################################################################
> # Request route 'base-outbound'
> ########################################################################
> route[2] {
>  xlog("L_INFO","ARRIVATO NELLA ROUTE 2\n");
>  t_on_reply("1");
>
>  if(!isflagset(21)) {
>  t_on_failure("1");
>  }
>  if(is_present_hf("Proxy-Authorization")) {
>  consume_credentials();
>  }
>
>  xlog("L_INFO", "Request leaving server, D-URI='$du' - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>
>  if(!t_relay()) {
>  sl_reply_error();
>  }
>  exit;
> }
>
> In the failure_route;
>
> ########################################################################
> # Failure route 'pstn-failover'
> ########################################################################
> failure_route[2] {
>  xlog("L_INFO", "Failure route for PSTN entered - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  route(9);
>
>  if(!use_next_gw()) {
>  xlog("L_ERR", "Failed to select next PSTN gateway - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  exit;
>  }
>  xlog("L_INFO", "selected next gateway $ru, attributes are $avp(s:drattrs)\n");
>
>  if(is_present_hf("P-Asserted-Identity")) {
>  xlog("L_INFO", "Removing P-Asserted-Identity in failure route\n");
>  remove_hf("P-Asserted-Identity");
>  }
>  if(is_present_hf("Remote-Party-ID")) {
>  remove_hf("Remote-Party-ID");
>  }
>  if(is_avp_set("$avp(s:caller_cli)/s")) {
>  xlog("L_INFO", "Set caller CLI '$avp(s:caller_cli)' - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>  append_hf("P-Asserted-Identity: <$avp(s:caller_cli)>\r\n");
>  #append_hf("Remote-Party-ID: <$avp(s:caller_cli)>;party=caller;privacy=none;screen=yes\r\n");
>  }
>  route(14);
>
>  t_on_failure("2");
>  route(2);
> }
>
> In the INVITE sent from proxy to the second gateway are still two P-Asserted Idntity fields.
> Where am I wrong?
>
> Thanks in advance.
>
> Matteo Marzuola
>
>
>
>
>   
>> Hi Matteo,
>>     
>
>   
>> Whatever change you in request_route will propagate in all branches - 
>> this is your problem - when you set the PAI for the first destination, 
>> in request_route, the PAI will be present in all future branches.
>>     
>
>   
>> To avoid this situation, avoid adding "per-branch" info from 
>> request_branch - do it from branch_route; branch_route and failure_route 
>> allows changes per branch (and not global ones).
>>     
>
>   
>> Do something like:
>>     
>
>   
>> request_route -> do_routing + arm branch_route
>> branch_route -> set PAI for the first branch
>> failure_route -> set PAI for the next branch
>>     
>
>   
>> Regards,
>> Bogdan
>>     
>
>   
>> Hi all. In my scenario I try to use dynamic routing and I have a problem with the P-Asserted Identity field. When >the proxy tries to send the INVITE to the first gateway selected from DRouting module by the function
>> do_routing, there is only one PAI field, but if that gateway is down, at the second attempt to next gateway, the >INVITE contains two PAI fields identicals.
>>     
>
>   
>> Thanks in advance.
>>     
>
>   
>> Matteo Marzuola
>>     
>
>
>
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