[SR-Users] kamailio 3 and cpl - 483 too many hops

10 Jun 2010


      I am trying to incorporate a cpl script for testing purposes with kamailio 3
but have been met with failure with each try.
Test scenario
I have two sip phones registered to kamailio successfully (I can make phone
calls between the two phones).
The CPL XML is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<cpl>
  <incoming >
    <location clear="yes"
url="sip:1000@192.168.254.144sip%3A1000@192.168.254.144"
...
<log comment="cpl-log - just location" />
    </location>
  </incoming>
</cpl>
This compiled successfully and is populating the cpl table in the openser
database.
When I call this from kamailio.cfg I get the 483 (Too many hops) error.  If
someone could spot an obvious error, I would appreciate it.
The current kamailio.cfg file is as follows:
------------------
debug=8
log_stderror=yes
memdbg=5
memlog=5
log_facility=LOG_LOCAL0
fork=yes
children=4
/* uncomment the next line to disable TCP (default on) */
disable_tcp=yes
/* uncomment the next line to disable the auto discovery of local aliases
   based on revers DNS on IPs (default on) */
auto_aliases=no
port=5060
/* uncomment and configure the following line if you want Kamailio to
   bind on a specific interface/port/proto (default bind on all available)
*/
listen=udp:192.168.254.144:5060
####### Custom Parameters #########
# These parameters can be modified runtime via RPC interface
# - see the documentation of 'cfg_rpc' module.
#
# Format: group.id = value 'desc' description
# Access: $sel(cfg_get.group.id) or @cfg_get.group.id
#
pstn.gw_ip = "" desc "PSTN GW Address"
####### Modules Section ########
#set module path
mpath="/usr/lib/kamailio/modules_k/:/usr/lib/kamailio/modules/"
/* uncomment next line for MySQL DB support */
loadmodule "db_mysql.so"
loadmodule "mi_fifo.so"
loadmodule "kex.so"
loadmodule "tm.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "uri_db.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "mi_rpc.so"
loadmodule "acc.so"
#!ifdef WITH_AUTH
loadmodule "auth.so"
loadmodule "auth_db.so"
#!endif
/* uncomment next line for aliases support
   NOTE: a DB (like db_mysql) module must be also loaded */
#loadmodule "alias_db.so"
/* uncomment next line for multi-domain support
   NOTE: a DB (like db_mysql) module must be also loaded
   NOTE: be sure and enable multi-domain support in all used modules
         (see "multi-module params" section ) */
#loadmodule "domain.so"
#!ifdef WITH_PRESENCE
loadmodule "presence.so"
loadmodule "presence_xml.so"
#!endif
#!ifdef WITH_NAT
loadmodule "nathelper.so"
#!endif
# ----kh add------#
loadmodule "cpl-c.so"
# ----kh end -----#
# ----------------- setting module-specific parameters ---------------
# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 0)
# ----- rr params -----
modparam("registrar", "method_filtering", 1)
/* uncomment the next line to disable parallel forking via location */
# modparam("registrar", "append_branches", 0)
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)
# ----- uri_db params -----
/* by default we disable the DB support in the module as we do not need it
   in this configuration */
modparam("uri_db", "use_uri_table", 0)
modparam("uri_db", "db_url", "")
# ----- acc params -----
/* what sepcial events should be accounted ? */
modparam("acc", "early_media", 1)
modparam("acc", "report_ack", 1)
modparam("acc", "report_cancels", 1)
/* by default ww do not adjust the direct of the sequential requests.
   if you enable this parameter, be sure the enable "append_fromtag"
   in "rr" module */
modparam("acc", "detect_direction", 0)
/* account triggers (flags) */
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
modparam("acc", "log_extra",
    "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
/* enhanced DB accounting */
#!ifdef WITH_ACCDB
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)
modparam("acc", "db_url",
    "mysql://openser:openserrw@localhost/openser")
modparam("acc", "db_extra",
    "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
#!endif
# ----- usrloc params -----
/* enable DB persistency for location entries */
#!ifdef WITH_USRLOCDB
modparam("usrloc", "db_mode",   2)
modparam("usrloc", "db_url",
    "mysql://openser:openserrw@localhost/openser")
#!endif
# ----- auth_db params -----
/* enable the DB based authentication */
#!ifdef WITH_AUTH
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "db_url",
    "mysql://openser:openserrw@localhost/openser")
modparam("auth_db", "load_credentials", "")
#!endif
# ----- alias_db params -----
/* uncomment the following lines if you want to enable the DB based
   aliases */
#modparam("alias_db", "db_url",
#    "mysql://openser:openserrw@localhost/openser")
# ----- domain params -----
/* uncomment the following lines to enable multi-domain detection
   support */
#modparam("domain", "db_url",
#    "mysql://openser:openserrw@localhost/openser")
#modparam("domain", "db_mode", 1)   # Use caching
# ----- multi-module params -----
/* uncomment the following line if you want to enable multi-domain support
   in the modules (dafault off) */
#modparam("alias_db|auth_db|usrloc|uri_db", "use_domain", 1)
# ----- presence params -----
/* enable presence server support */
#!ifdef WITH_PRESENCE
modparam("presence|presence_xml", "db_url",
    "mysql://openser:openserrw@localhost/openser")
modparam("presence_xml", "force_active", 1)
modparam("presence", "server_address", "sip:10.0.0.10:5060")
#!endif
# ----- nathelper -----
#!ifdef WITH_NAT
modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7722")
modparam("nathelper", "natping_interval", 30)
modparam("nathelper", "ping_nated_only", 1)
modparam("nathelper", "sipping_bflag", 7)
modparam("nathelper", "sipping_from",
"sip:pinger@kamailio.orgsip%3Apinger@kamailio.org
")
modparam("registrar|nathelper", "received_avp", "$avp(i:80)")
modparam("usrloc", "nat_bflag", 6)
#!endif
# ----- cpl --------
modparam("cpl-c","db_url","mysql://openser:openserrw@localhost/openser")
modparam("cpl-c","cpl_dtd_file","/etc/kamailio/cpl-06.dtd")
modparam("cpl-c","log_dir","/var/log/kamailio/cpl")
# ----- cpl --------
####### Routing Logic ########
route{
if (!mf_process_maxfwd_header("10")) {
        sl_send_reply("483","Too Many Hops");
        exit;
    }
if(!sanity_check("1511", "7"))
    {
        xlog("Malformed SIP message from $si:$sp\n");
        exit;
    }
# NAT detection
    route(NAT);
if (has_totag()) {
        # sequential request withing a dialog should
        # take the path determined by record-routing
        if (loose_route()) {
            if (is_method("BYE")) {
                setflag(1); # do accounting ...
                setflag(3); # ... even if the transaction fails
            }
            route(RELAY);
        } else {
            if (is_method("SUBSCRIBE") && uri == myself) {
                # in-dialog subscribe requests
                route(PRESENCE);
                exit;
            }
            if ( is_method("ACK") ) {
                if ( t_check_trans() ) {
                    # non loose-route, but stateful ACK; must be an ACK
after a 487 or e.g. 404 from upstream server
                    t_relay();
                    exit;
                } else {
                    # ACK without matching transaction ... ignore and
discard.\n");
                    exit;
                }
            }
            sl_send_reply("404","Not here");
        }
        exit;
    }
#initial requests
# CANCEL processing
    if (is_method("CANCEL"))
    {
        if (t_check_trans())
            t_relay();
        exit;
    }
t_check_trans();
# authentication
    route(AUTH);
# record routing for dialog forming requests (in case they are routed)
    # - remove preloaded route headers
    remove_hf("Route");
    if (is_method("INVITE|SUBSCRIBE"))
        record_route();
# account only INVITEs
    if (is_method("INVITE")) {
        setflag(1); # do accounting
    }
    if (!uri==myself)
    /* replace with following line if multi-domain support is used */
    ##if (!is_uri_host_local())
    {
        append_hf("P-hint: outbound\r\n");
        route(RELAY);
    }
# requests for my domain
if( is_method("PUBLISH|SUBSCRIBE"))
        route(PRESENCE);
if (is_method("REGISTER"))
    {
        if(isflagset(5))
        {
            setbflag("6");
            # uncomment next line to do SIP NAT pinging
            ## setbflag("7");
        }
        if (!save("location"))
            sl_reply_error();
exit;
    }
if ($rU==$null) {
        # request with no Username in RURI
        sl_send_reply("484","Address Incomplete");
        exit;
    }
route(PSTN);
# apply DB based aliases (uncomment to enable)
    ##alias_db_lookup("dbaliases");
if (!lookup("location")) {
        switch ($rc) {
            case -1:
            case -3:
                t_newtran();
                t_reply("404", "Not Found");
                exit;
            case -2:
                sl_send_reply("405", "Method Not Allowed");
                exit;
        }
    }
# when routing via usrloc, log the missed calls also
    setflag(2);
route(RELAY);
}
route[RELAY] {
#!ifdef WITH_NAT
    if (check_route_param("nat=yes")) {
        setbflag("6");
    }
    if (isflagset(5) || isbflagset("6")) {
        route(RTPPROXY);
    }
#!endif
/* example how to enable some additional event routes */
    if (is_method("INVITE")) {
        #t_on_branch("BRANCH_ONE");
        xlog("--kh-- before cpl call");
        cpl_run_script("incoming", "force_stateful");
        xlog("--kh-- after cpl call");
        t_on_reply("REPLY_ONE");
        t_on_failure("FAIL_ONE");
    }
if (!t_relay()) {
        sl_reply_error();
    }
    exit;
}
# Presence server route
route[PRESENCE]
{
#!ifdef WITH_PRESENCE
    if (!t_newtran())
    {
        sl_reply_error();
        exit;
    };
if(is_method("PUBLISH"))
    {
        handle_publish();
        t_release();
    }
    else
    if( is_method("SUBSCRIBE"))
    {
        handle_subscribe();
        t_release();
    }
    exit;
#!endif
# if presence enabled, this part will not be executed
    if (is_method("PUBLISH") || $rU==$null)
    {
        sl_send_reply("404", "Not here");
        exit;
    }
    return;
}
# Authentication route
route[AUTH] {
#!ifdef WITH_AUTH
    if (is_method("REGISTER"))
    {
        # authenticate the REGISTER requests (uncomment to enable auth)
        if (!www_authorize("", "subscriber"))
        {
            www_challenge("", "0");
            exit;
        }
if ($au!=$tU)
        {
            sl_send_reply("403","Forbidden auth ID");
            exit;
        }
    } else {
        # authenticate if from local subscriber (uncomment to enable auth)
        if (from_uri==myself)
        {
            if (!proxy_authorize("", "subscriber")) {
                proxy_challenge("", "0");
                exit;
            }
            if (is_method("PUBLISH"))
            {
                if ($au!=$tU) {
                    sl_send_reply("403","Forbidden auth ID");
                    exit;
                }
            } else {
                if ($au!=$fU) {
                    sl_send_reply("403","Forbidden auth ID");
                    exit;
                }
            }
consume_credentials();
            # caller authenticated
        }
    }
#!endif
    return;
}
# Caller NAT detection route
route[NAT]{
#!ifdef WITH_NAT
    force_rport();
    if (nat_uac_test("19")) {
        if (method=="REGISTER") {
            fix_nated_register();
        } else {
            fix_nated_contact();
        }
        setflag(5);
    }
#!endif
    return;
}
# RTPProxy control
route[RTPPROXY] {
#!ifdef WITH_NAT
    if (is_method("BYE")) {
        unforce_rtp_proxy();
    } else if (is_method("INVITE")){
        force_rtp_proxy();
    }
    if (!has_totag()) add_rr_param(";nat=yes");
#!endif
    return;
}
# PSTN GW routing
route[PSTN] {
#!ifdef WITH_PSTN
    # check if PSTN GW IP is defined
    if (strempty($sel(cfg_get.pstn.gw_ip))) {
        xlog("SCRIPT: PSTN rotuing enabled but pstn.gw_ip not defined\n");
        return;
    }
# route to PSTN dialed numbers starting with '+' or '00'
    #     (international format)
    # - update the condition to match your dialing rules for PSTN routing
    if(!($rU=~"^(+|00)[1-9][0-9]{3,20}$"))
        return;
# only local users allowed to call
    if(from_uri!=myself) {
        sl_send_reply("403", "Not Allowed");
        exit;
    }
$ru = "sip:" + $rU + "@" + $sel(cfg_get.pstn.gw_ip);
route(RELAY);
    exit;
#!endif
return;
}
# Sample branch router
branch_route[BRANCH_ONE] {
    xdbg("new branch at $ru\n");
}
# Sample onreply route
onreply_route[REPLY_ONE] {
    xdbg("incoming reply\n");
#!ifdef WITH_NAT
    if ((isflagset(5) || isbflagset("6")) && status=~"(183)|(2[0-9][0-9])")
{
        force_rtp_proxy();
    }
    if (isbflagset("6")) {
        fix_nated_contact();
    }
#!endif
}
# Sample failure route
failure_route[FAIL_ONE] {
#!ifdef WITH_NAT
    if (is_method("INVITE")
            && (isbflagset("6") || isflagset(5))) {
        unforce_rtp_proxy();
    }
#!endif
if (t_is_canceled()) {
        exit;
    }
}
-- 
Karl Harris

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[SR-Users] kamailio 3 and cpl - 483 too many hops