[Serusers] Help with SER messages
Jan Janak
jan at iptel.org
Fri Jan 16 14:01:32 CET 2004
There should be no save("aliases") and lookup("aliases") at the end of
the script. The 200 OK is probably generated by save("aliases").
Jan.
On 16-01 14:00, CURRO_DOMINGUEZ wrote:
> Hello
>
> We need some help. We are trying to make a call.
>
> The scenario is the following:
> 2 User Agents and SER acting as a SIP Proxy. (they are on the same LAN)
>
> When the caller sends a SIP INVITE to the callee, the SIP INVITE goes
> first to SER. Then, SER sends a 100 Trying to caller and reroutes the
> SIP INVITE to the callee.
> Now, the strange thing starts:
> SER SENDS a SIP response 200 OK to the caller when he should do
> nothing!!!
>
> According to the specification (RFC 3261). SER should do nothing except
> for routing the SIP messages 180 Ringing and 200 OK from the callee!!
>
> Here, there is a explain diagram:
>
> ACCORDING WITH THE RFC 3261
> ==============================
>
> Alice's . . . . .ProxY. . . . . Bob's
> softphone SIP Phone
> | | |
> | INVITE F1 | |
> |--------------->| INVITE F2 |
> | 100 Trying F3 |--------------->|
> |<---------------| |
> | | 180 Ringing F4 |
> | 180 Ringing F5 |<---------------|
> |<---------------| 200 OK F6 |
> | 200 OK F7 |<---------------|
> |<---------------| |
> | |
> | ACK F8 |
> |-------------------------------->|
> | Media Session |
> |<===============================>|
> | BYE F9 |
> |<------------- ------------------|
> | 200 OK F10 |
> |-------------------------------->|
> | |
>
>
>
> WHAT SER MAKES
> =======================
>
>
> Alice's . . . . .SER . . . . . Bob's
> softphone SIP Phone
> | | |
> | INVITE F1 | |
> |--------------->| INVITE F3 |
> | 100 Trying F2 |--------------->|
> |<---------------| |
> | 200 OK F4 | |
> |<---------------| |
> | | 200 OK F5 |
> | |--------------->|
> | | 180 Ringing F6 |
> | 180 Ringing F7 |<---------------|
> |<---------------| 200 OK F8 |
> | 200 OK F9 |<---------------|
> |<---------------| |
> | |
> | ACK F10 |
> |-------------------------------->|
> | Media Session |
> |<===============================>|
> | BYE F11 |
> |<------------- ------------------|
> | 200 OK F12 |
> |-------------------------------->|
> | |
>
>
> Maybe, it is a problem of our SER configuration.
>
> Thank you very much for your time.
>
> Attached ser config:
>
> #
> # $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 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
> #listen=212.166.192.132
> fifo="/tmp/ser_fifo"
> alias=cdshuesca.es
>
> # ------------------ 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"
>
> # Uncomment this if you want digest authentication
> # mysql.so must be loaded !
> loadmodule "/usr/local/lib/ser/modules/auth.so"
> loadmodule "/usr/local/lib/ser/modules/auth_db.so"
>
> loadmodule "/usr/local/lib/ser/modules/acc.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)
>
> modparam("acc","log_level",1)
> modparam("acc","log_flag",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");
> break;
> };
> if ( msg:len > 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==myself) {
>
> if (method=="REGISTER") {
>
> # Uncomment this if you want to use digest authentication
> if (!www_authorize
> ("cdshuesca.es", "subscriber")) {
> www_challenge("cdshuesca.es", "0");
> break;
> };
> # setflag(1); # Anadido por mi para log
> # t_relay(); # Anadido por mi
> 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();
> };
> lookup("aliases");
> save("aliases");
>
> }
>
>
>
> _______________________________________________
> Serusers mailing list
> serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers
More information about the sr-users
mailing list