Re: [Kamailio-Users] Kamalio Support for RFC 3323 " Privacy" - sr-users

11 Dec 2008

----- Mensaje original -----
De: Alexandr Dubovikov &lt;voip(a)start4.info&gt;
Fecha: Viernes, Diciembre 5, 2008 1:13 pm
Asunto: Re: [Kamailio-Users] Kamalio Support for RFC 3323 " Privacy"

...
  Iñaki Baz Castillo пишет:
  El Viernes, 5 de Diciembre de 2008, Juha Heinanen
escribió:

> if caller needs privacy, then it is up to the UA to send   anonymous from
 >> header together with p-p-i and privacy headers.
 >>      I Think this is wrong. The UA should ask for the privacy services, an
the proxy must offer this services. This means it must rewrite the information that the UA
is willing to keep private with anonymous information, and keep track of it, so it can be
replaced when the response is received.
...

 That would be so cool... Unfortunatelly I just know a SIP phone   implementing 
  it: Twinkle.

 Other phones (as Linksys) when the user enables privacy during a   call, just 
  set the From Display-Name with
"Anonymous" value, while the From   username 
  remains the real :(

     Yep, some UAC set "Anonymous" only in Display Name. But u can fix 
 it 
 using this code:

 $var(url) = $fu;
 if(is_present_hf("Privacy") && ($hdr(Privacy)=="id" || 
 $hdr(Privacy)=="user") &&
search("(From|f):\s*\"?anonymous")) {
 uac_replace_from("Anonymous","sip:anonymous@anonymous.invalid");
 if(!is_present_hf("P-Asserted-Identity")) { 
 append_hf("P-Asserted-Identity: <$var(url)>\r\n"); };
 } 
This is what i'm talking about!!!!, but you should check also if the message already
have a P-Asserted-Identity that was generated before and remove it. 

And how it will know to which transaction it corresponds when the response message comes.
It will use the branch id, and the tags? It doesn't matter that some URIs have been
replaced with anonymous information?

There should be an easier way to do this. 
...

 With best regards,

 -- 

 Alexandr Dubovikov * baron@iRC RusNet * shurik(a)start4.info
    AD1-UANIC      *  ICQ: 122351182  *  http://www.start4.info

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