[Users] one way audio
Jayesh Nambiar
voip_freak at yahoo.co.in
Thu Mar 23 10:27:18 CET 2006
Hi all,
I am jus trying to experiment strange things. please tell me if this is possible. I have an user behind NAT calling a user on pstn side. Since the pstn gateway is on a public IP, I dont use mediaproxy, what i do before an invite is:
fix_nated_contact();
fix_nated_sdp("15");
This call is successful and both the parties can hear. But again when a user at public IP trues to contact the user behind NAT, there is only "one way audio". Here also I do a fix_nated_contact() and fix_nated_sdp("15") in the onreply_route[], but I get the foll error in my syslog.
Mar 23 14:36:19 switch2 /usr/local/sbin/openser[29070]: ERROR: extract_mediaip: no `c=' in SDP
Mar 23 14:36:19 switch2 /usr/local/sbin/openser[29070]: ERROR: extract_mediaip: no `o=' in SDP
Can someone pls explain what these errors are and why do they occur. My cfg file is below:
debug=9 # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no
check_via=no # (cmd. line: -v)
dns=no # (cmd. line: -r)
rev_dns=no # (cmd. line: -R)
listen=202.XX.XX.XX
port=5060
children=4
fifo="/tmp/openser_fifo"
loadmodule "/usr/local/lib/openser/modules/mysql.so"
loadmodule "/usr/local/lib/openser/modules/sl.so"
loadmodule "/usr/local/lib/openser/modules/tm.so"
loadmodule "/usr/local/lib/openser/modules/rr.so"
loadmodule "/usr/local/lib/openser/modules/maxfwd.so"
loadmodule "/usr/local/lib/openser/modules/usrloc.so"
loadmodule "/usr/local/lib/openser/modules/registrar.so"
loadmodule "/usr/local/lib/openser/modules/textops.so"
loadmodule "/usr/local/lib/openser/modules/auth.so"
loadmodule "/usr/local/lib/openser/modules/auth_db.so"
loadmodule "/usr/local/lib/openser/modules/mediaproxy.so"
loadmodule "/usr/local/lib/openser/modules/nathelper.so"
loadmodule "/usr/local/lib/openser/modules/domain.so"
modparam("auth_db|usrloc",
"db_url", "mysql://openser:openserrw@localhost/openser")
modparam("usrloc", "db_mode", 2)
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "password_column", "password")
modparam("registrar", "nat_flag", 6)
modparam("rr", "enable_full_lr", 1)
modparam("mediaproxy", "natping_interval", 30)
modparam("nathelper", "rtpproxy_disable", 1)
modparam("nathelper", "natping_interval", 0)
route{
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
};
if (msg:len >= 2048 ) {
sl_send_reply("513", "Message too big");
exit;
};
if(!method=="REGISTER") {
record_route();
};
if (loose_route()) {
append_hf("P-hint: rr-enforced\r\n");
route(1);
return;
};
if (uri!=myself) {
route(1);
return;
};
if(uri==myself) {
if(method=="REGISTER") {
sl_send_reply("100", "Trying");
if (!search("^Contact:\ +\*") && client_nat_test("7")) {
setflag(6);
force_rport();
fix_nated_contact();
};
if (!www_authorize("","subscriber")) {
www_challenge("", "0");
exit;
};
save("location");
exit;
};
if(method=="INVITE") {
if (client_nat_test("3")) {
force_rport();
fix_nated_sdp("15");
fix_nated_contact();
setflag(7);
};
if(src_ip==202.XX.XX.44) { #my pstn gateway. calls are only for registered users
if(!lookup("location")) {
sl_send_reply("404", "User not found");
exit;
};
route(1);
};
if (!proxy_authorize("","subscriber")) {
proxy_challenge("", "0");
exit;
};
route(2);
return;
};
};
}
route[1] {
t_on_reply("1");
if(!t_relay()) {
sl_reply_error();
exit;
};
}
route[2] {
if(uri=~"^sip:0[0-9]*@") {
strip(1);
rewritehost("202.80.61.1");
route(1);
exit;
};
if(!lookup("location")) {
sl_send_reply("404", "User not found");
exit;
};
route(1);
exit;
}
onreply_route[1] {
if ((isflagset(6) || isflagset(7)) &&
(status=~"(180)|(183)|2[0-9][0-9]")) {
if (!search("^Content-Length:\ +0")) {
force_rport();
fix_nated_sdp("15");
fix_nated_contact();
};
};
}
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