RE: [Serusers] SIP/2.0 483 Too Many Hops - sr-users

23 Sep 2005


      Here, try this script. I couldn't test it, but apart from minor errors it should work.
# ----------- global configuration parameters ------------------------
debug=3          # debug level (cmd line: -dddddddddd)
# must be yes since REGISTER processing causes an INVITE to be sent,
# which needs to be processed by another process
fork=yes
children=4
alias=server.sam.cse
alias=sam.cse
# debugging
log_stderror=yes # (cmd line: -E)
#mhomed=yes
fifo="/tmp/ser_fifo"
fifo_db_url="mysql://root:vlftmd@localhost/ser"
# ------------------ module loading ----------------------------------
# Uncomment this if you want to use SQL database
loadmodule "/usr/local/lib/ser/modules/mysql.so"
loadmodule "/usr/local/lib/ser/modules/sl.so"
loadmodule "/usr/local/lib/ser/modules/tm.so"
loadmodule "/usr/local/lib/ser/modules/rr.so"
loadmodule "/usr/local/lib/ser/modules/maxfwd.so"
loadmodule "/usr/local/lib/ser/modules/usrloc.so"
loadmodule "/usr/local/lib/ser/modules/registrar.so"
loadmodule "/usr/local/lib/ser/modules/exec.so"
# ----------------- setting module-specific parameters ---------------
modparam("rr", "enable_full_lr", 1)
# -- usrloc params --
modparam("usrloc", "db_mode",   2)
modparam("usrloc", "db_url", "mysql://root:vlftmd@localhost/ser")
# -------------------------  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")) {
    			log(1, "ERROR: Too Many Hops\n");
                sl_send_reply("483","Too Many Hops");
                break;
        };
    	#keep this low to prevent possible DoS attacks and misconfigurations from overloading the server
        if (msg:len>=2048) {
    			log(1, "ERROR: Message Too Big\n");
                sl_send_reply("513", "Message too big");
                break;
        };
# 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 (loose_route()) {
                route(1);
                break;
        };
if (method=="REGISTER") 
    	{
log(1, "INFO: User Registered\n");
                        # save location before initiating welcome
                        save("location");
                        record_route();
                        sl_send_reply("200", "ok");
                        # welcome message
                        log(1, "INFO: Initiating Welcome Message \n");
                        route(3);
                        break;
        };
log(1, "record-route processing completed\n");
# if the request is for other domain use UsrLoc
        # (in case, it does not work, use the following command
        # with proper names and addresses in it)
        if (uri==myself) 
    	{
    		if(method=="INVITE")
    		{
                log(1, "INFO:  SIP Invite");
    			if (!lookup("location")) {
                        sl_send_reply("404", "Not Found");
                        log(1, "ERROR: User Not Found\n");
                        break;
                };
        	};
    		record_route();
        };
route(1);
}
route[1]
{
#send the call outward
    if (!t_relay()) 
    {
    	xlog("L_WARN", "ERROR: t_relay failed");
    	sl_reply_error();
    };
}
# welcome message -- if a REGISTER succeeded, look if it is the first-time;
# if so, initiate click-to-dial transaction to set up call to an
announcement
# server; edit the config values first to make it work
route[3] {
if (!exec_msg('
                # config:
                # --announcement server URI
                ANS="sip:mijin@sam.cse"
                # --SIP domain
#               DOMAIN="192.168.178.193"
                DOMAIN="192.168.178.194"
                # ctd
                CTD=${HOME}/sip_router/examples/ctd.sh
                # ------------------------------------
                # check if first time ...
                SIP_UID=`echo $SIP_HF_TO | sed -e
"s/^.*sip:([a-zA-Z0-9_.]*)@.*$/\1/g"`
                QUERY="select flag from subscriber
                                where username="$SIP_UID";
                        update subscriber set flag="x"
                                where username="$SIP_UID" ";
                        mysql -Bsuser -pheslo -e "$QUERY" ser| grep "^x$" > /dev/null
                # ... if so, c-t-d to announcement server
                if [ "$?" -ne 0 ] ; then
                # flag was not set to x yet -- first-time registration;
                # initiate a call from telephone of the user to an announcement server
                        $CTD "sip:$SIP_UID@$DOMAIN" "$ANS" > /dev/null 2>&1
                fi
        ')) {
                log(1, "ERROR: Welcome Message Script Failed\n");
        }
log(1, "INFO: Welcome Message Sent\n");
}
#----------------End Script---------------------
---Mike
-----Original Message-----
From: serusers-bounces@lists.iptel.org on behalf of ? ??
Sent: Fri 9/23/2005 6:30 AM
To: serusers@lists.iptel.org
Subject: [Serusers] SIP/2.0 483 Too Many Hops
confirm 83b7fb1612811c64f85f47a6046dd84dea286d15
Dear....
I inserted command like this.
What I want is that 
  when I loaded test.cfg file, what I check SIP messages using sipp client 
mode
I want 200 OK. But, as you see, I received "SIP/2.0 483 Too Many Hops" 
error message.
So I was advanced about this.
 - alias="sam.cse"//SIP_ DOMAIN
    alias="server.sam.cse"//my_computer.SIP_DOMAIN
    alias="192.168.178.194"//my_ip
 - add my hostname in /etc/host
 - change to : if (!mf_process_maxfwd_header("100")
but, I couldn't solve this problem.
I would really appreciate for giving some advise.
Thank you in advance.............................
mi-jin Song
=====================================================
[root@cse4 ~]# ser -f test.cfg 
Listening on
             udp: 127.0.0.1 [127.0.0.1]:5060
             udp: 192.168.178.194 [192.168.178.194]:5060
             tcp: 127.0.0.1 [127.0.0.1]:5060
             tcp: 192.168.178.194 [192.168.178.194]:5060
Aliases:
             tcp: server:5060
             tcp: localhost:5060
             tcp: localhost.localdomain:5060
             tcp: cse4:5060
             udp: server:5060
             udp: localhost:5060
             udp: localhost.localdomain:5060
             udp: cse4:5060
             *: 192.168.178.194:*
             *: sam.cse:*
             *: server.sam.cse:*
stateless - initializing
 0(0) Maxfwd module- initializing
exec - initializing
 0(0) INFO: udp_init: SO_RCVBUF is initially 110592
 0(0) INFO: udp_init: SO_RCVBUF is finally 221184
 0(0) INFO: udp_init: SO_RCVBUF is initially 110592
 0(0) INFO: udp_init: SO_RCVBUF is finally 221184
 0(0) ERROR: tcp_init: bind(6, 0x810dafc, 16) on 127.0.0.1: Address already 
in use
=====================================================
[root@cse4 sipp]# ./sipp -sn uac 192.168.178.194
Resolving 192.168.178.194...
------------------------------ Scenario Screen -------- [1-4]: Change 
Screen --
  Call-rate(length)     Port   Total-time  Total-calls  Remote-host
  10.0(0 ms)/1.000s   5061       2.54 s           25  
192.168.178.194:5060(UDP)
5 new calls during 0.538 s period      2 ms scheduler resolution
  0 concurrent calls (limit 30)          Peak was 1 calls, after 0 s
  0 out-of-call msg (discarded)
  1 open sockets
Messages  Retrans   Timeout   
Unexpected-Msg
      INVITE ---------->           25        0         0
         100 <----------           25        0                   25
         180 <----------           0         0                   0
         200 <---------- E-RTD   0         0                   0
         ACK ---------->          0         0
             [     0 ms]
         BYE ---------->           0         0         0
         200 <----------           0         0                   0
------------------------------ Test Terminated 
---------------------------------
----------------------------- Statistics Screen ------- [1-4]: Change 
Screen --
  Start Time             | 2005-09-23 20:03:13
  Last Reset Time        | 2005-09-23 20:03:15
  Current Time           | 2005-09-23 20:03:16
-------------------------+---------------------------+--------------------------
Counter Name           | Periodic value            | Cumulative value
-------------------------+---------------------------+--------------------------
Elapsed Time           | 00:00:00:536              | 00:00:02:543
  Call Rate              |    9.328 cps              |    9.831 cps
-------------------------+---------------------------+--------------------------
Incoming call created  |        0                  |        0
  OutGoing call created  |        5                  |       25
  Total Call created     |                           |       25
  Current Call           |        0                  |
-------------------------+---------------------------+--------------------------
Successful call        |        0                  |        0
  Failed call            |        6                  |       25
-------------------------+---------------------------+--------------------------
Response Time          | 00:00:00:000              | 00:00:00:000
  Call Length            | 00:00:00:004              | 00:00:00:004
------------------------------ Test Terminated 
--------------------------------
2005-09-23 20:03:16: Unexpected message for Call-ID 
'25.4743.127.0.0.1@sipp.call.id': while expecting '100' response, received 
'SIP/2.0 483 Too Many Hops
Via: SIP/2.0/UDP 127.0.0.1:5061;received=192.168.178.194
From: sipp sip:sipp@127.0.0.1:5061;tag=25
To: sut 
sip:service@192.168.178.194:5060;tag=b27e1a1d33761e85846fc98f5f3a7e58.6e68
Call-ID: 25.4743.127.0.0.1@sipp.call.id
CSeq: 1 INVITE
Server: Sip EXpress router (0.9.4 (i386/linux))
Content-Length: 0
Warning: 392 192.168.178.194:5060 "Noisy feedback tells:  pid=4688 
req_src_ip=192.168.178.194 req_src_port=5060 
in_uri=sip:service@192.168.178.194:5060 
out_uri=sip:service@192.168.178.194:5060 via_cnt==18"
' .
sipp: There were more errors, enable -trace_err to log them.
=======================================================
<<     test.cfg      >>
#
# $Id: welcome.cfg,v 1.3 2003/11/03 13:03:56 janakj Exp $
#
# welcome message for new subscribers; based on exec
#
# ----------- global configuration parameters ------------------------
debug=3          # debug level (cmd line: -dddddddddd)
# must be yes since REGISTER processing causes an INVITE to be sent,
# which needs to be processed by another process
fork=yes
children=4
alias="server.sam.cse"
alias="sam.cse"
alias="192.168.178.194"
# debugging
log_stderror=yes # (cmd line: -E)
mhomed=yes
fifo="/tmp/ser_fifo"
# ------------------ module loading ----------------------------------
# Uncomment this if you want to use SQL database
loadmodule "/usr/local/lib/ser/modules/mysql.so"
loadmodule "/usr/local/lib/ser/modules/sl.so"
loadmodule "/usr/local/lib/ser/modules/tm.so"
loadmodule "/usr/local/lib/ser/modules/rr.so"
loadmodule "/usr/local/lib/ser/modules/maxfwd.so"
loadmodule "/usr/local/lib/ser/modules/usrloc.so"
loadmodule "/usr/local/lib/ser/modules/registrar.so"
loadmodule "/usr/local/lib/ser/modules/exec.so"
# ----------------- setting module-specific parameters ---------------
# -- usrloc params --
modparam("usrloc", "db_mode",   2)
#modparam("usrloc", "db_url", "mysql://ser:heslo@192.168.2.16/ser" )
modparam("usrloc", "db_url", "mysql://root:vlftmd@localhost/ser")
# -------------------------  request routing logic -------------------
# main routing logic
route{
    log(1, "\n\n");
    log(1, "START!!!\n");
    # initial sanity checks -- messages with
    # max_forwards==0, or excessively long requests
    if (!mf_process_maxfwd_header("15")) {
    	sl_send_reply("483","Too Many Hops");
    	break;
    };
    if (msg:len>=204822) {
    	sl_send_reply("513", "Message too big");
    	break;
    };
# 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=="INVITE") record_route();	# 1=loose routing
    if(method=="INVITE"){
    	log(1, "receive INVITE\n");
    	record_route();
    	sl_send_reply("200", "ok");
    };
# loose-route processing
    if (loose_route()) {
    	t_relay();
    	break;
    };
#	if(method=="ACK"){
#		log(1, "receive ACK\n");
#	};
log(1, "record-route processing completed\n");
# if the request is for other domain use UsrLoc
    # (in case, it does not work, use the following command
    # with proper names and addresses in it)
    if (uri==myself) {
if (method=="REGISTER") {
log(1, "receive REGISTER\n");
    		# save location before initiating welcome
    		save("location");
    		log(1, "save ??\n");
    		record_route();
    		sl_send_reply("200", "ok");
    		# welcome message
    		log(1, "route3?? ?? \n");
    		route(3);
    		break;
    	};
# native SIP destinations are handled using our USRLOC DB
    	if (!lookup("location")) {
    		sl_send_reply("404", "Not Found");
    		log(1, "Usrloc DB?? ?? ? ?? \n");
    		break;
    	};
    };
    if(method=="BYE"){
    	log(1, "receive BYE\n"); 
    	record_route(); 
    	sl_send_reply("200", "ok");
    	break;
    };
    
    t_relay();
}
# welcome message -- if a REGISTER succeeded, look if it is the first-time;
# if so, initiate click-to-dial transaction to set up call to an 
announcement
# server; edit the config values first to make it work
route[3] {
if (!exec_msg('
    	# config: 
    	# --announcement server URI
    	ANS="sip:mijin@sam.cse"
    	# --SIP domain
#		DOMAIN="192.168.178.193"
    	DOMAIN="192.168.178.194"
    	# ctd
    	CTD=${HOME}/sip_router/examples/ctd.sh
    	# ------------------------------------
    	# check if first time ...
    	SIP_UID=`echo $SIP_HF_TO | sed -e 
"s/^.*sip:([a-zA-Z0-9_.]*)@.*$/\1/g"`
    	QUERY="select flag from subscriber 
    			where username="$SIP_UID";
    		update subscriber set flag="x" 
    			where username="$SIP_UID" ";
    		mysql -Bsuser -pheslo -e "$QUERY" ser| grep "^x$" > /dev/null
    	# ... if so, c-t-d to announcement server
    	if [ "$?" -ne 0 ] ; then
    	# flag was not set to x yet -- first-time registration;
    	# initiate a call from telephone of the user to an announcement server
    		$CTD "sip:$SIP_UID@$DOMAIN" "$ANS" > /dev/null 2>&1
    	fi
    ')) {
    	log(1, "welcome exec failed\n");
    }
log(1, "-------route3 ? \n");
}
_________________________________________________________________
???? ?? ??? ???? ???... MSN ??? ???   
http://vod.msn.co.kr
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