[Users] tls. soket queues not flushed
serega
seregas at freemail.ru
Thu Sep 28 20:13:46 CEST 2006
Hi all.
I have next problem while using openser with tls.
System consists of sip statefull server (in next time, simply, server) and stateless sip gateway (gateway). Server used for connect to jabber server. Server contains rewrote jabber module logic and also use presence module. Gateway used to connect to other sip gateway (extgateway) via tls protocol. Gateway use 1.1 openser version and doesn’t contain changed code.
When server together with gateway restarts and server in its database contains above 260 subscriptions (in watcherinfo table) i have error. Socket used by gateway to connect with extgateway contains in receive and sent queues a lot of data (above 50kByte on each sides). This data never flushed out.
This happens because after restart sip server through gateway send notifications to extgateway.
When I attached using gdb to process that send data, I saw that it was in infinity loop because tls library returns SSL_ERROR_WANT_WRITE and I think it’s correct because we have overfilled send queue. In this case I don’t interest why receive queue not empty (I think it happens because sending process have got block on socket). But I don’t understand why sent queue not flushed. I test this behavior using tcp – all was correct.
Socket not closed by other side because this status can be unchanged above one day. Anybody can help me? Why this happens?
I use openssl-0.9.8c and redhat os (Linux xdevel1 2.4.21-4.ELsmp #1 SMP Fri Oct 3 17:52:56 EDT 2003 i686 i686 i386 GNU/Linux). Computer have too Pentium 4 processors).
Gateway.cfg (sip.qa.hbex.com – gateway address):
#
# $Id: router_qa.cfg,v 1.1 2006/08/02 18:14:34 ilya Exp $
#
# simple quick-start config script
#
# ----------- global configuration parameters ------------------------
debug=9 # debug level (cmd line: -dddddddddd)
log_facility=LOG_LOCAL0
fork=yes
log_stderror=yes # (cmd line: -E)
check_via=no # (cmd. line: -v)
dns=no # (cmd. line: -r)
rev_dns=no # (cmd. line: -R)
children=20
fifo="/tmp/openser_fifo"
server_signature=no
fifo_db_url="mysql://root:@localhost/openser"
listen = udp:sip.qa.hbex.com:5060
#incoming sip server address
listen = tcp:sip.qa.hbex.com:5060
#tls address
disable_tls = 0
listen = tls:sip.qa.hbex.com:5061
listen = udp:sip.qa.hbex.com:5061
tls_certificate = "/ home/inop/ex.com-cert.pem"
tls_private_key = "/home/inop/ex.com-privkey.pem"
tls_ca_list = "/home/inop/ex.com-calist.pem"
tls_require_client_certificate=0
tls_verify_client=0
tls_verify_server=0
# ------------------ module loading ----------------------------------
loadmodule "/home/interop/openser/lib/openser/modules/rr.so"
loadmodule "/home/interop/openser/lib/openser/modules/xlog.so"
loadmodule "/home/interop/openser/lib/openser/modules/textops.so"
loadmodule "/home/interop/openser/lib/openser/modules/maxfwd.so"
loadmodule "/home/interop/openser/lib/openser/modules/sl.so"
loadmodule "/home/interop/openser/lib/openser/modules/mysql.so"
loadmodule "/home/interop/openser/lib/openser/modules/tm_unchanged.so"
loadmodule "/home/interop/openser/lib/openser/modules/usrloc.so"
loadmodule "/home/interop/openser/lib/openser/modules/registrar.so"
# ----------------- setting module-specific parameters ---------------
modparam("registrar", "default_expires", 120)
modparam("registrar", "use_domain", 1)
modparam("usrloc", "use_domain", 1)
modparam("usrloc", "db_mode", 0)
# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
#modparam("usrloc", "db_mode", 2)
# add value to ;lr param to make some broken UAs happy
modparam("rr", "enable_full_lr", 1)
modparam("maxfwd", "max_limit", 10)
# ------------------------- request routing logic -------------------
# main routing logic
route{
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","To Many Hops");
drop();
};
if (dst_port==5061) {
if (search("^To:.*@.*cmnicator.com") || search("^To:.*@.*cihb.com")) {
# rewrite destination and forward to jabber (sip server)
route(1);
return;
};
sl_reply_error();
return;
}
if (method=="REGISTER") {
xlog("XXX: saving location msg=$mb\n");
if(!save_noreply("location")) {
log("XXX: Error saving location!\n");
sl_reply_error();
}
sl_send_reply("200","OK");
return;
}
if (search("^To:.*@.*cmnicator.com") || search("^To:.*@.*cihb.com")) {
#forward to self
route(3);
return;
}
##forward to ext gateway
route(2);
}
route[1]{
if (method!="MESSAGE" && method!="SUBSCRIBE" && method!="NOTIFY") {
log("XXX: Request not forwarded to sip server!\n");
sl_send_reply("202","Accepted");
return;
}
t_on_reply("1");
record_route();
if(!lookup("location")) {
if (method!="SUBSCRIBE") {
log("XXX: only subscribes are processed for user that are not registered\n");
sl_reply_error();
return;
}
subst_uri('/(.*)@(.*)/\1#\2*jabber.qa.im.hb.com at jabber01.qa.im.hb.com/ig');
if(!t_relay()) {
log("XXX: error forwarding jabber01...\n");
sl_reply_error();
return;
} else {
sl_send_reply("200","OK");
return;
}
} else {
log("XXX: forwarding to the address of record...\n");
if(!t_relay()) {
log("XXX: error forwarding to address of record \n");
sl_reply_error();
return;
} else {
sl_send_reply("200", "OK");
return;
}
}
}
# forwarding to external gateway
route[2]{
log("XXX: rewriting headers\n");
subst('/^(From:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
subst('/^(Contact:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
if(!forward("tls:43.123.141.166:3000")) {
log("XXX: Error forwarding to external gateway!\n");
sl_reply_error();
} else {
sl_send_reply("200", "Accepted");
};
}
# forwarding to SELF
route[3]{
log("XXX: rewriting headers\n");
subst('/^(From:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
subst('/^(Contact:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
log("XXX: about to forward to self\n");
if(!forward("tcp:sip.qa.hbex.com:5061")) {
log("XXX: Error forwarding to self!\n");
sl_reply_error();
} else {
sl_send_reply("200", "Accepted");
};
}
# this is executed for replies
onreply_route[1]{
subst('/^(To:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
subst('/^(Contact:[^@#]*)#([^@]*)\*jabber.qa.im.hb.com at jabber...qa.im.hb.com(.*)/\1@\2\3/ig');
route(2);
}
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