I am hoping someone can point me in the right direction. I am using opensips
1.7.
I have 2 networks using mhomed=1. When I invoke topology_hiding() using the
dialog module the header contact uses the internal IP to the external side of
the call.
Here is my config. Am I missing something?
debug=3
log_stderror=no
log_facility=LOG_LOCAL0
fork=yes
children=4
disable_tcp=yes
auto_aliases=yes
sip_warning=yes
listen=udp:xxx.xxx.xxx.xxx:5060
listen=udp:10.8.1.139:5060
mhomed=1
group=nobody
user=nobody
####### Modules Section ########
#set module path
mpath="/usr/local/lib64/opensips/modules/"
/* uncomment next line for MySQL DB support */
loadmodule "db_text.so"
loadmodule "signaling.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"
loadmodule "uri.so"
loadmodule "domain.so"
loadmodule "permissions.so"
loadmodule "dialog.so"
loadmodule "rtpproxy.so"
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
modparam("rr", "append_fromtag", 0)
modparam("uri", "use_uri_table", 0)
modparam("domain", "db_url","text:///zxa/server/opensipsdb")
modparam("domain", "db_mode", 1) # Use caching
modparam("dialog", "db_mode", 1) # Realtime
modparam("dialog", "db_url","text:///zxa/server/opensipsdb")
modparam("permissions", "db_url","text:///zxa/server/opensipsdb")
modparam("rtpproxy","rtpproxy_sock", "udp:127.0.0.1:7891")
####### Routing Logic ########
route{
xlog("=== TOP ===");
xlog("%%%% tu= $tu | fu= $fu | od= $od | ReceivedINT: $Ri | SourceIP: $si
%%%");
if (!check_address("1","$si","$sp","$proto"))
{
xlog("=== ACCESS FAILED ===");
xlog("=== $si| $sp | $proto ===");
sl_send_reply("403","Forbidden");
exit;
}
if (!mf_process_maxfwd_header("10"))
{
xlog("=== TOO MANY HOPS ===");
sl_send_reply("483","Too Many Hops");
exit;
}
#CANCEL processing
if (is_method("CANCEL"))
{
xlog("=== CANCEL ===");
if (t_check_trans())
t_relay();
exit;
}
if (is_method("PUBLISH"))
{
sl_send_reply("503", "Service Unavailable");
exit;
}
if (has_totag())
{
xlog("=== HAS TO TAG ===");
if(match_dialog()) && is_method("INVITE|ACK|BYE|UPDATE") #Topology Hide
Routine
{
xlog("=== HAS DIALOG MATCH ===");
if (is_method("BYE"))
{
xlog("=== DIALOG MATCH BYE ===");
setflag(1); # Accounting bye
} else if (is_method("INVITE")) {
xlog("=== DIALOG MATCH RE-INVITE LOOSE ===");
record_route();
} else if (is_method("ACK")) {
xlog("=== DIALOG MATCH ACK ===");
}
xlog(" in-dialog topology hiding request - $DLG_dir\n");
route(1);
exit;
}
}
t_check_trans();
if (loose_route())
{
xlog("L_ERR","Attempt to route with preloaded Route's
[$fu/$tu/$ru/$ci]");
if (!is_method("ACK"))
{
sl_send_reply("403","Preload Route denied");
exit;
}
}
# record routing
if (!is_method("REGISTER|MESSAGE"))
{
record_route();
}
if (!is_uri_host_local())
{
xlog("Not local so lets just see what happens $rd");
route(1);
}
if ($rU==NULL)
{
# request with no Username in RURI
sl_send_reply("484","Address Incomplete");
exit;
}
if (is_method("INVITE") && (!has_totag()) )
{
xlog("((((((((( NEW CALL ))))))))))");
rewritehostport("10.6.3.87:5068");
topology_hiding();
route(1);
exit;
}
send_reply("420", "Invalid Extension");
exit;
}
route[1] {
#---- RTP Proxy handling ---#
xlog("=== ROUTE 1 ===");
if (is_method("BYE|CANCEL"))
{
unforce_rtp_proxy();
}
if (has_body("application/sdp"))
{
append_hf("P-hint: IE \r\n");
rtpproxy_offer("IE","10.8.1.139");
}
t_on_reply("1");
t_on_failure("1");
if (!t_relay())
{
sl_reply_error();
}
exit;
}
onreply_route[1] {
xlog("=== ON REPLY ROUTE 2 rs= $rs | fu= $fu | od= $od | si= $si | Ri= $Ri
===");
if ( status=~"(183)|(2[0-9][0-9])" )
{
if ($Ri == "10.8.1.139")
{
append_hf("P-hint: RR EI \r\n");
rtpproxy_answer("EI","xxx.xxx.xxx.xxx");
} else {
append_hf("P-hint: RR IE \r\n");
rtpproxy_answer("IE","10.8.1.139");
}
}
}
failure_route[1] {
xlog("=== FAIL ROUTE 2 ===");
unforce_rtp_proxy();
if (t_was_cancelled())
{
exit;
}
}
Here is the Sip traces from the external call.
xxx.xxx.xxx.xxx is my opensips server
A.B.C.D is the the external call.
10.8.1.139 is my internal IP for opensips. On the 180 ringing you can see that
the contact is set to 10.8.1.139. It should be xxx.xxx.xxx.xxx
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55
From: IPFax <sip:[email protected]>;tag=IPF_PORT_0001_1A54
To: <sip:[email protected]>
Call-ID: [email protected]
CSeq: 1 INVITE
Max-Forwards: 70
Contact: <sip:[email protected]:5068>
User-Agent: VFAXSUA/IP_FAX-9.0.5782.743
Allow: INVITE, ACK, BYE, CANCEL, REFER, NOTIFY
Content-Type: application/sdp
Content-Length: 166
v=0
o=IPFax 0 0 IN IP4 A.B.C.D
s=SIP Fax Call
i=IPFax
c=IN IP4 A.B.C.D
t=0 0
m=audio 49176 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
a=sendrecv
--------------------------------------------------------------------------
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55
From: IPFax <sip:[email protected]>;tag=IPF_PORT_0001_1A54
To: <sip:[email protected]>;tag=IPF_PORT_0005_1044
Call-ID: [email protected]
CSeq: 1 INVITE
Contact: <sip:10.8.1.139:5060;did=8b3.a5e06475>
User-Agent: VFAXSUA/IP_FAX-9.0.5782.743
Content-Length: 0
--------------------------------------------------------------------------
SIP/2.0 200 OK
Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55
From: IPFax <sip:[email protected]>;tag=IPF_PORT_0001_1A54
To: <sip:[email protected]>;tag=IPF_PORT_0005_1044
Call-ID: [email protected]
CSeq: 1 INVITE
Contact: <sip:10.8.1.139:5060;did=8b3.a5e06475>
User-Agent: VFAXSUA/IP_FAX-9.0.5782.743
Allow: INVITE, ACK, BYE, CANCEL, REFER, NOTIFY
Content-Type: application/sdp
Content-Length: 179
P-hint: RR EI
v=0
o=IPFax 0 0 IN IP4 10.6.3.87
s=SIP Fax Call
i=IPFax
c=IN IP4 xxx.xxx.xxx.xxx
t=0 0
m=audio 7452 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
a=sendrecv
a=nortpproxy:yes
Thanks.
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