Hi José,

Sorry for the delay. Here are some useful hints setting up correctly CPL processing: - from security reason, the cpl_process register() should be also placed after the authentication block. I don't know what tool are you using for sending the register with CPL (if you use CPLEd, it's able to authenticate); - for CPL processing - As written in README file, the INVITE transaction must be created before calling the cpl_run_script(), so you can do something like:

if (method=="INVITE") { # cpl interpreter requires a pre-created transaction for # the processed INVITE if ( !t_newtran() ) { # it'a a retransmission break; }; if ( !cpl_run_script("incoming") ) { # script execution failed t_reply("500","CPL script execution failed"); break; }; # we get here only if the CPL interpreter decided that server # should follow it default behavior

# mark that there is already a created # transaction for current INVITE setflag(3); };

keep in mind that you cannot use t_relay() when the transaction is already created (after calling t_newtran() ), so use a flag for marking if the transaction is created or not, and instead of t_relay(), do: if ( !isflagset(3) ) { # build a new fresh transaction and forward if (!t_relay()) { sl_reply_error(); }; } else { # transaction exists -> do just forward if (!t_forward_nonack_uri()) { sl_reply_error(); }; };

Anyhow, if you what to have incoming and outgoing CPL processing, logical will be to place the outgoing first.

Regards, Bogdan

José Nunes wrote:

Greetings everyone,

I'm trying to use the cpl-c module in ser 0.8.12. I uploaded through CPLEd a small script that would redirect to user1 the calls destined to user3. Calls between users that don´t have a CPL script associated are established. But if a call is destined to user3, when the cpl_run_script function is called, I get the following errors from the logs:

ERROR: t_reply: cannot send a t_reply to a message for which no T-state has been established ERROR:cpl_invoke_script: unable to send 100 reply! My configuration file is:

# # $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 fifo="/tmp/ser_fifo" fifo_mode=0666 #permite acesso ao 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/cpl-c.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"

# ----------------- 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)

# -- cpl-c module -- modparam("cpl-c","cpl_db","mysql://ser:heslo@localhost/ser") modparam("cpl-c","cpl_table","cpl") modparam("cpl-c","cpl_dtd_file","/usr/local/etc/ser/cpl-06.dtd") modparam("cpl-c","log_dir","/var/log/ser/cpl") modparam("cpl-c","proxy_recurse",0)

# ------------------------- 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; }; lookup("aliases"); setflag(1);

# 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=~"klingon.av.it.pt") {

if (method=="REGISTER") {

# Uncomment this if you want to use digest authentication if(!cpl_process_register()) { break; }; if (!www_authorize("klingon.av.it.pt", "subscriber")) { www_challenge("klingon.av.it.pt", "0"); break; };

save("location"); break;

};

if(method=="INVITE") { log(1,"Invite \n"); cpl_run_script("incoming"); cpl_run_script("outgoing"); };

# 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(); };

} If I use t_newtran prior to cpl_run_script, I get errors for every calls: ERROR: t_newtran: transaction already in process 0x422baf48 ERROR: sl_reply_error used: I'm terribly sorry, server error occured (1/SL) WARNING: script writer didn't release transaction Can anyone help me on this?

José Nunes

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