[Serusers] 483 too many hops [help]

Jan Janak jan at iptel.org
Fri Sep 19 02:29:27 CEST 2003


Hello,

the problem is in if (uri=="fly.superman.com") condition. Since you
do not use regular expression matching in the condition, it will match
only Request-URIs that contain _exactly_ "fly.superman.com". But if you
look at your Request-URI you will notice that there is
"sip:fly.superman.com" (notice the "sip:" at the beginning) and
therefore the condition will not match.

The server will forward the message again to itself...until maxforwards
check hits.

Replace the condition with if (uri==myself)

  Jan.

PS: The condition you are using probably doesn't do what you expect. I
    guess you wanted to match Request-URI containing "fly.superman.com",
    to achieve that you should use something like this:

     if (uri=~"[@:\.]fly\.superman\.com([;:].*)*")

On 18-09 17:20, t d wrote:
> Hello,
> 
> read the manual at 
> http://www.iptel.org/ser/doc/seruser/seruser.html#AEN330
> added Alias for my domain but still getting too many
> hops from the x-lite client.
> 
> SEND >> 199.199.199.106:5060
> REGISTER sip:fly.superman.com SIP/2.0
> Via: SIP/2.0/UDP 199.199.199.104:5060
> From: <sip:5551234 at fly.superman.com>
> To: <sip:5551234 at fly.superman.com>
> Contact: "timding" <sip:5551234 at 199.199.199.104:5060>
> Call-ID:
> 21F125EB58214925AAD4C9650457B531 at fly.superman.com
> CSeq: 20295 REGISTER
> Expires: 500
> User-Agent: X-Lite build 1050
> Content-Length: 0
> 
> 
> RECEIVE << 199.199.199.106:5060
> SIP/2.0 483 Too Many Hops
> Via: SIP/2.0/UDP 199.199.199.104:5060
> From: <sip:5551234 at fly.superman.com>
> To:
> <sip:5551234 at fly.superman.com>;tag=b27e1a1d33761e85846fc98f5f3a7e58.c7e5
> Call-ID:
> 21F125EB58214925AAD4C9650457B531 at fly.superman.com
> CSeq: 20295 REGISTER
> Server: Sip EXpress router (0.8.11 (i386/linux))
> Content-Length: 0
> Warning: 392 199.199.199.106:5060 "Noisy feedback
> tells:  pid=1764 req_src_ip=199.199.199.106
> req_src_port=5060 in_uri=sip:fly.superman.com
> out_uri=sip:fly.superman.com via_cnt==12"
> 
> #####################################
> #   ser.cfg                         #
> #####################################
> 
> 
> # $Id: ser.cfg,v 1.21.2.1 2003/07/30 16:46:18 andrei
> Exp $
> #
> # simple quick-start config script
> #
> 
> # ----------- global configuration parameters
> ------------------------
> 
> debug=3         # debug level (cmd line: -dddddddddd)
> fork=yes
> log_stderror=no # (cmd line: -E)
> 
> /* Uncomment these lines to enter debugging mode
> #debug=7
> #fork=no
> #log_stderror=yes
> */
> 
> check_via=no    # (cmd. line: -v)
> dns=no           # (cmd. line: -r)
> rev_dns=no      # (cmd. line: -R)
> port=5060
> children=4
> fifo="/tmp/ser_fifo"
> 
> # ------------------ module loading
> ----------------------------------
> 
> # Uncomment this if you want to use SQL database
> loadmodule "/usr/lib/ser/modules/mysql.so"
> loadmodule "/usr/lib/ser/modules/sl.so"
> loadmodule "/usr/lib/ser/modules/tm.so"
> loadmodule "/usr/lib/ser/modules/rr.so"
> loadmodule "/usr/lib/ser/modules/maxfwd.so"
> loadmodule "/usr/lib/ser/modules/usrloc.so"
> loadmodule "/usr/lib/ser/modules/registrar.so"
> 
> # Uncomment this if you want digest authentication
> # mysql.so must be loaded !
> loadmodule "/usr/lib/ser/modules/auth.so"
> loadmodule "/usr/lib/ser/modules/auth_db.so"
> 
> # ----------------- setting module-specific parameters
> ---------------
> 
> # -- usrloc params --
> 
> #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)
> 
> # -- auth params --
> # Uncomment if you are using auth module
> #
> modparam("auth_db", "calculate_ha1", yes)
> #
> # If you set "calculate_ha1" parameter to yes (which
> true in this config),
> # uncomment also the following parameter)
> #
> modparam("auth_db", "password_column", "password")
> 
> # -- rr params --
> # add value to ;lr param to make some broken UAs happy
> modparam("rr", "enable_full_lr", 1)
> 
> # -------------------------  request routing logic
> -------------------
> 
> # main routing logic
> 
> alias="fly.superman.com"
> 
> 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");
>                 break;
>         };
>         if (len_gt( max_len )) {
>                 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
>         record_route();
>         # loose-route processing
>         if (loose_route()) {
>                 t_relay();
>                 break;
>         };
> 
>         # 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=="fly.superman.com") {
> 
>                 if (method=="REGISTER") {
> 
> # Uncomment this if you want to use digest
> authentication
>                         if
> (!www_authorize("fly.superman.com", "subscriber")) {
>                                
> www_challenge("fly.superman.com", "0");
>                                 break;
>                         };
> 
>                         save("location");
>                         break;
>                 };
> 
>                 # native SIP destinations are handled
> using our USRLOC DB
>                 if (!lookup("location")) {
>                         sl_send_reply("404", "Not
> Found");
>                         break;
>                 };
>         };
>         # forward to current uri now; use stateful
> forwarding; that
>         # works reliably even if we forward from TCP
> to UDP
>         if (!t_relay()) {
>                 sl_reply_error();
>         };
> 
> }
> 
> can someone share some light?
> Tim
> 
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