Make call with parameter and header in SIP URI

[billg@xxxxxxxxxxxx (Bill Gardner)]

Hi Alicia,

Using pjsua, it is pretty easy to add header items to an INVITE and then 
read them when the call is answered. See the example code below.

Regards,

Bill

// code on calling endpoint
void add_sip_header(pj_pool_t *pool, pjsua_msg_data *msg_data, char 
*hname, char *hvalue)
{
     pj_str_t my_hname = pj_str(hname);
     pj_str_t my_hvalue = pj_str(hvalue);
     pjsip_hdr *h;

     h = (pjsip_hdr*) pjsip_generic_string_hdr_create(pool, &my_hname, 
&my_hvalue);
     pj_list_push_back(&(msg_data->hdr_list), h);
}

void make_call()
{
     pjsua_acc_id acc_id;
     pj_str_t uri_to_call;
     pjsua_msg_data msg_data;
     pjsua_call_id call_id;

     // add header
     pjsua_msg_data_init(&msg_data);
     add_sip_header(pjsua_var.pool, &msg_data, "X-MyHeader", "value");

     // other call setup goes here...
     acc_id = pjsua_acc_get_default();
     status = pjsua_call_make_call(acc_id, &uri_to_call, 0, NULL, 
&msg_data, &callID);
     // ...etc
}

// code on answering endpoint to get header item
void on_incoming_call(pjsua_acc_id acc_id, pjsua_call_id call_id,
     pjsip_rx_data *rdata)
{
     pjsip_generic_string_hdr *hdr = NULL;
     pj_str_t name;
     name = pj_str("X-MyHeader");
     if (hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &name, 
NULL)) {
         PJ_LOG(3, (THIS_FILE, "found header name '%.*s' value '%.*s'",
             hdr->name.slen, hdr->name.ptr, hdr->hvalue.slen, 
hdr->hvalue.ptr));
     }
     // other stuff...
}



On 12/15/2014 10:21 AM, Alicia Romero wrote:
> Hi!!
>
> I want to make a call with a parameter and a header in the SIP-URI 
> target, something like this:
>
> sip:call_test at 192.168.13.190 
> <mailto:sip%3Acall_test at 192.168.13.190>;parameter1=pvalue1?header1=hvalue1
>
> The problem is that pjsua send the header not in the SIP-URI, but as a 
> Message Header of the INVITE.
>
> This is a problem for me because then I have to implement a parser for 
> this Header, but if it were sent in the SIP-URI I nee only to take the 
> header parameters from the pjsip_sip_uri structure.
>
> Is it possible to change this behaviour and make pjsua send the header 
> as a part of the SIP-URI Adress? If not, is there a way to get the 
> Message Header without implementing a specific parser for that Header?
>
> Thanks!!
>
>
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