[Serusers] acc question.

[Greg Fausak]

I really hate answering my own question :-)

>                } else if(method=="BYE") {
>                        setflag(1);
>                        forward(uri:host, uri:port);

I changed this to t_relay() and then I get the BYE
ACC output in the syslog file.  This explains something else
(I think).  Sometimes the BYE would work, sometimes it would
not make it all the way to the other device (either the PSTN gateway or the
UA).  That is probably because forward() simply bounces the
packet via UDP and the UDP can fail ???  t_relay() retries??
Does this make sense?

---greg

>
>Hi,
>
>I am trying to create a basic script for routing calls to and from
>the PSTN.  I have experimented with many scripts over the last month,
>this included script is an example.  I can use a UA on my
>laptop called 'estara' and REGISTER with my ser sip server.
>I can make a phone call (INVITE) to the PSTN.  I can hang up the call
>from either end (BYE) and everything seems to work well.
>
>I am trying to get accounting working.  I see the call acceptance
>record in my syslog file:
>
>Jan  7 00:21:09 build ser[3507]: ACC: transaction answered: method=INVITE, i-uri=sip:92143357976 at build.august.net, o-uri=sip:2143357976 at 64.90.42.16:5060, call_id= 847b3d22-131d-46b0-abcb-dc8e6a9f32b5 at 192.168.100.100, from= greg <sip:1107 at build.august.net>;tag=3a7b9c52, code=200
>
>However, I can't get the 'BYE' event to record the transaction to the
>syslog file.  The 'BYE' event is bouncing through my SIP server.
>Can someone give me a hint?
>
>Thank you,
>---greg
>Greg Fausak
>
>Included file----example.cfg----------------------------------------
>debug=1          # debug level (cmd line: -dddddddddd)
>fork=yes
>log_stderror=no # (cmd line: -E)
>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"
>
>loadmodule "/usr/local/lib/ser/modules/sl.so"
>loadmodule "/usr/local/lib/ser/modules/tm.so"
>loadmodule "/usr/local/lib/ser/modules/acc.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"
>modparam("acc", "log_level", 1)
>modparam("acc", "acc_flag", 1 )
>
>route{
>        # filter too old messages
>        if (!mf_process_maxfwd_header("10")) {
>                log("LOG: Too many hops\n");
>                sl_send_reply("483","Too Many Hops");
>                break;
>        };
>        if (len_gt( max_len )) {
>                sl_send_reply("513", "Wow -- Message too large");
>                break;
>        };
>
>        /* ********* RR ********************************** */
>
>        /* Do strict routing if route headers present */
>        rewriteFromRoute();
>        /* record-route INVITEs -- all subsequent requests must visit us */
>        if (method=="INVITE") {
>                addRecordRoute();
>        } else if (method=="REGISTER") {
>                log("here is a register");
>                save("location");
>                break;
>        };
>
>        # now check if it really is a PSTN destination which should be handled
>        # by our gateway; if not, and the request is an invitation, drop it --
>        # we cannot terminate it in PSTN; relay non-INVITE requests -- it may
>        # be for example BYEs sent by gateway to call originator
>        if (!uri=~"sip:9[2-9][0-9]{9}@.*") {
>                if (method=="INVITE") {
>                        sl_send_reply("403", "Call cannot be served here");
>                } else if(method=="BYE") {
>                        setflag(1);
>                        forward(uri:host, uri:port);
>                } else {
>                        forward(uri:host, uri:port);
>                };
>                break;
>        };
>
>        # account completed transactions via syslog
>        setflag(1);
>
>        strip(1);
>
>
>        rewritehostport("64.90.42.16:5060");
>
>        # forward the request now
>        if (!t_relay()) {
>                sl_reply_error();
>                break;
>        };
>}
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