18 Jul
2004
18 Jul
'04
5:36 a.m.
Contacts are used to advertised wherebouts for subsequent in-dialog
requests coming back to your UAC. For that reason, I don't entirely
understand why the UAC includes Contact in CANCEL at all -- all in all
CANCEL is used to discontinued estabslishment of a dialog. Anyhow,
it should not matter the Contact content is invalid since there is no
use for the header field in this case at all.
-jiri
At 11:16 AM 7/18/2004, Linus Surguy wrote:
Hi all,
I'm sure I must be doing something very stupid! I'm using fix_nated_contact
and then t_relay(). The INVITE is being sent with a rewriten contact field,
but if the UA issues a CANCEL the private IP address is sent in the contact
field and is not rewritten.
What basic mistake have I made?!
A cut down version of my ser.cfg is:
record_route();
# loose-route processing
if (loose_route()) {
t_relay();
break;
};
fix_nated_contact();
force_rport();
if (method=="INVITE") {
fix_nated_sdp("1");
force_rtp_proxy();
/* set up reply processing */
t_on_reply("1");
setflag(6);
};
rewritehostport("213.xxx.xxx.xxx:5060");
if (!t_relay()) {
sl_reply_error();
};
# all incoming replies for t_onrepli-ed transactions enter here
onreply_route[1] {
fix_nated_contact();
if (status=~"[12][0-9][0-9]")
force_rtp_proxy();
}
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Jiri Kuthan http://iptel.org/~jiri/