Hello, I am a fresher of ser. I try most times to use cpl-c to do call forwarding when no answer or busy.I have got several result.I attached my ser.cfg and cpl scripts。 I got ser source code from cvs on 2004-11-30. please tell me how about debug or try！ very thanks! my try result: 1.no error,but do forwarding as redirect(call 100004 ,call 100002)。 in my ser.cfg is： ----------------------- if (!t_newtran()) { # it's a retransmission log(1,"main loop: t_newtran fail\n"); break; }; if (!cpl_run_script("incoming","is_stateful")) { # script execution failed log(1,"main loop: cpl_run_script fail\n"); t_reply("500", "CPL script execution failed"); }; ----------------------- 2.cpl_run_script fail when cpl script do forwarding(call 100002). ua 100002 is ringing, caller receive 505. redirect is ok(call 100004). Dec 7 13:52:10 localhost /usr/local/sbin/ser[15553]: ERROR: t_newtran: transaction already in process 0xbd6da0f8 Dec 7 13:52:10 localhost /usr/local/sbin/ser[15553]: ERROR:cpl-c:run_proxy: failed to build new transaction! Dec 7 13:52:10 localhost /usr/local/sbin/ser[15553]: ERROR:cpl_c:cpl_run_script: runtime error Dec 7 13:52:10 localhost /usr/local/sbin/ser[15553]: main loop: cpl_run_script fail now in ser.cfg is: ----------------------- if (!t_newtran()) { # it's a retransmission log(1,"main loop: t_newtran fail\n"); break; }; if (!cpl_run_script("incoming","force_stateful")) { # script execution failed log(1,"main loop: cpl_run_script fail\n"); t_reply("500", "CPL script execution failed"); }; ----------------------- 3. as result 2. now in ser.cfg is: ----------------------- if (!t_newtran()) { # it's a retransmission log(1,"main loop: t_newtran fail\n"); break; }; if (!cpl_run_script("incoming","is_stateless")) { # script execution failed log(1,"main loop: cpl_run_script fail\n"); t_reply("500", "CPL script execution failed"); }; ----------------------- 4。 caller receive 500 as soon as when call, different result 3。the error is "Number no available,call rejected 500,I'm terribly sorry, server error occurred"。（when call any online number） cpl_run_script("incoming","is_stateful") and cpl_run_script("incoming","force_stateful") get same result. ----------------------- ###if (!t_newtran()) { # it's a retransmission ### log(1,"main loop: t_newtran fail\n"); ### break; ###}; if (!cpl_run_script("incoming","is_stateless")) { # script execution failed log(1,"main loop: cpl_run_script fail\n"); t_reply("500", "CPL script execution failed"); }; ----------------------- ――――――――――――――――――― | 100004(a)192.168.2.77 | <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE cpl PUBLIC '-//IETF//DTD RFCxxxx CPL 1.0//EN' 'cpl.dtd'> <cpl> <incoming> <location url="sip:100003@192.168.2.77:16800"> <redirect/> </location> </incoming> </cpl> | 100002(a)192.168.2.77 | <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE cpl PUBLIC '-//IETF//DTD RFCxxxx CPL 1.0//EN' 'cpl.dtd'> <cpl> <subaction id="voicemail"> <location url="sip:100003@192.168.2.77:16800"> <proxy/> </location> </subaction> <incoming> <location url="sip:100003@192.168.2.77:16800"> <proxy timeout="8"> <busy> <sub ref="voicemail"/> </busy> <noanswer> <sub ref="voicemail"/> </noanswer> </proxy> </location> </incoming> </cpl> ――――――――――――――――――― my ser.cfg is： ――――――――――――――――――― # # $Id: ser.cfg,v 1.24 2003/11/11 15:32:36 andrei Exp $ # # simple quick-start config script # # ----------- global configuration parameters ------------------------ debug=9 # debug level (cmd line: -dddddddddd) fork=yes log_stderror=no # (cmd line: -E) # Uncomment these lines to enter debugging mode #fork=no #log_stderror=yes check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=16800 children=4 fifo="/tmp/ser_fifo" # Additional Aliases alias="192.168.2.77" # ------------------ 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/textops.so" loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/auth_db.so" loadmodule "/usr/local/lib/ser/modules/cpl-c.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- #modparam("usrloc", "db_mode", 0) modparam("usrloc", "db_mode", 2) modparam("auth_db", "calculate_ha1", yes) 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",2) modparam("cpl-c","lookup_domain","location") # ------------------------- 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 if (!method=="REGISTER") record_route(); # subsequent messages withing a dialog should take the # path determined by record-routing 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==myself) { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("192.168.2.77", "subscriber")) { www_challenge("192.168.2.77", "0"); break; }; # handle REGISTER messages with CPL script cpl_process_register(); save("location"); break; }; # process INVITE if (method=="INVITE") { # cpl interpreter requires a pre-created transaction for the processed INVITE if (!t_newtran()) { # it's a retransmission log(1,"main loop: t_newtran fail\n"); break; }; if (!cpl_run_script("incoming","is_stateful")) { # script execution failed log(1,"main loop: cpl_run_script fail\n"); t_reply("500", "CPL script execution failed"); }; # 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); }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; # forward current uri now 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(); }; }; } ―――――――――――――――――――