26 Jul
2006
26 Jul
'06
10:38 p.m.
Hi All,
I'm trying to setup a redundant environment with DNS SRV records, 2 (or
more) SIP registration servers, and Asterisk gateways.
Basically I've setup both OpenSER clients to t_replicate each other the
registration message if its coming from a client, and save it to the
database or to memory when its coming from the other OpenSER server.
However, every once in a while, I get message to big, and or duplicate
messages (WARNING: warning skipped -- too big, or ERROR:
warning_builder: buffer size exceeded, submit_query: Duplicate entry
,db_insert: Error while submitting query...)
While it seems to work in general, I was not sure that this is the
"right" way to do it.
I'm attaching my openser.cfg of one of the machines; the other is more
or less identical...
Thanks
# ----------- global configuration parameters ------------------------
debug=9 # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no # (cmd line: -E)
check_via=no # (cmd. line: -v)
dns=no # (cmd. line: -r)
listen=172.28.132.20
rev_dns=no # (cmd. line: -R)
port=5060
children=4
fifo="/tmp/openser_fifo"
alias="mydomain.com"
# ------------------ module loading ----------------------------------
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/lcr.so"
loadmodule "/usr/local/lib/openser/modules/xlog.so"
# ----------------- setting module-specific parameters ---------------
modparam("usrloc", "db_mode", 2)
modparam("usrloc|lcr|auth_db|avpops|group","db_url","mysql://openser:ope
nserrw(a)voip-db.mydomain.com/openser")
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db",
"password_column", "password")
modparam("rr", "enable_full_lr", 1)
# ------------------------- request routing logic -------------------
# main routing logic
route{
# initial sanity checks -- messages with
# max_forwards==0, or excessively long requests
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;
};
# we record-route all messages -- to make sure that
# subsequent messages will go through our proxy; that's
# particularly good if upstream and downstream entities
# use different transport protocol
if (!method=="REGISTER")
record_route();
# subsequent messages withing a dialog should take the
# path determined by record-routing
if (loose_route()) {
# mark routing logic in request
append_hf("P-hint: rr-enforced\r\n");
route(1);
};
if (!uri==myself) {
route(1);
};
# Handle Request logic here
if (uri==myself) {
if (method=="REGISTER") {
route(2);
exit;
}
lookup("aliases");
if (!uri==myself) {
append_hf("P-hint: outbound alias\r\n");
route(1);
};
if (!load_gws()) {
sl_send_reply("500", "Server Internal Error -
Cannot load gateways");
exit;
};
if (!next_gw()) {
sl_send_reply("503", "Service not available, no
gateways found");
log (1,"No more gateways");
} else {
log (1,"Found a gateway");
}
if (!lookup("location")) {
sl_send_reply("404", "Not Found");
exit;
};
append_hf("P-hint: usrloc applied\r\n");
};
route(1);
}
route[1] {
# send it out now; use stateful forwarding as it works reliably
# even for UDP2TCP
if (!t_relay()) {
sl_reply_error();
};
exit;
}
route[2] {
#handle all Registration here....
if (search("^(Contact|m):
.*(a)(voip.mydomain.com)")){
log(1, "ALERT: someone trying to set
aor==server address\n");
sl_send_reply("476", "Server address in
contacts is not allowed" );
exit;
};
# challenge/response
#if a registration request is coming from another ser server, it
means that's it's already authenticated the user and wrote
#an entry in the database, so lets just write it into our
memory.
if (src_ip==172.28.132.21) {
save_memory("location");
log(1, "Registered replicated user from
Proxy");
exit;
};
# this is a new request, lets check that the user is
valid.
if (!www_authorize("mydomain.com",
"subscriber")) {
www_challenge("mydomain.com", "0");
log(1, "Authentication challenge issued.
Waiting for reply.\n");
exit;
};
# Authentication successful, add entry to our Contact database
log(1, "Authentication challenge reply ok.\n");
if (!save("location")) {
sl_reply_error();
log(1, "ALERT: Unable to save URI to
location database.\n");
} else {
# and replicate the request to the backup server
if (!src_ip==172.28.132.21) {
log(1, "REPLICATE: Replicating
register request\n");
t_replicate("sip:172.28.132.21:5060");
};
};
}