Hello,
I am using the nua interface of sofia-sip 1.12.8 in my application. With
nua_create() I specify
the URLs to listen on as follows:
nua = nua_create(root, event_callback, NULL,
NUTAG_URL("sip:ip:5060;transport=udp,tcp"),
NUTAG_SIPS_URL("sip:ip:5061;transport=tls"),
TPTAG_CERTIFICATE(certificate_dir),
TAG_END());
Where "ip" is my local interface ip.
This works fine so far.
My question now is: If there is incoming request like an INVITE and my callback
function gets
called, how do I know which port this request arrived on?
The problem is that I need to know on application level if the request used
udp/tcp or tls. I had
a look into freeswitch code and they seem to use the contact header to find out
if the request came
over tls. Unfortunately it is possible to send a request to the udp socket of
my application (over udp)
with a contact header like this: "sips:[EMAIL PROTECTED];transport=tls". In
this case application believes
that the request used tls, but actually is unencrypted.
Can anybody give me a hint how to get to know the transport used by incoming
requests on application level?
Using two nua_t objects, one for udp/tcp and one for tls could be a solution,
but I would prefer using a single nua_t
object for all transports.
Thanks in advance,
Timo
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