Hi,

I installed a kamailio from the debian repository, i use the default
configuration.
The only enable the tcp and tls transport modes, and configured mysql login.

Everyting seems to be working fine.

I would need now to configure rtprpoxy, but i just cant make it work.
My goal is to force rtpproxy for all calls.


Any help is highly appreciated!!



Thank you
Marc


Rtpproxy is installed and seems to be running:

This is my rtpproxy configuration:
------------
# Defaults for rtpproxy

# The control socket.
#CONTROL_SOCK="unix:/var/run/rtpproxy/rtpproxy.sock"
# To listen on an UDP socket, uncomment this line:
CONTROL_SOCK=udp:127.0.0.1:22222

LISTEN_ADDR=[external_ip]
# Additional options that are passed to the daemon.
EXTRA_OPTS="-l ${LISTEN_ADDR}"
/usr/sbin#
-------------

It seems to be running:
-----------
/etc/init.d# ./rtpproxy start
Starting RTP relay: rtpproxy.
/etc/init.d# netstat -an|grep 22222
udp        0      0 127.0.0.1:22222         0.0.0.0:*
/etc/init.d#

-----------------



Here is my kamailio configuration, default as is installed:

-------------------------------------------


#!KAMAILIO
#
# Kamailio (OpenSER) SIP Server v3.1 - default configuration script
#     - web: http://www.kamailio.org
#     - git: http://sip-router.org
#
# Direct your questions about this file to: <sr-users@lists.sip-router.org>
# # Refer to the Core CookBook at http://www.kamailio.org/dokuwiki/doku.php
# for an explanation of possible statements, functions and parameters.
#
# Several features can be enabled using '#!define WITH_FEATURE' directives:
#
# *** To run in debug mode: 
#     - define WITH_DEBUG
#
# *** To enable mysql: 
#     - define WITH_MYSQL
#
# *** To enable authentication execute:
#     - enable mysql
#     - define WITH_AUTH
#     - add users using 'kamctl'
#
# *** To enable IP authentication execute:
#     - enable mysql
#     - enable authentication
#     - define WITH_IPAUTH
#     - add IP addresses with group id '1' to 'address' table
#
# *** To enable persistent user location execute:
#     - enable mysql
#     - define WITH_USRLOCDB
#
# *** To enable presence server execute:
#     - enable mysql
#     - define WITH_PRESENCE
#
# *** To enable nat traversal execute:
#     - define WITH_NAT
#     - install RTPProxy: http://www.rtpproxy.org
#     - start RTPProxy:
#        rtpproxy -l _your_public_ip_ -s udp:localhost:7722
#
# *** To enable PSTN gateway routing execute:
#     - define WITH_PSTN
#     - set the value of pstn.gw_ip
#     - check route[PSTN] for regexp routing condition
#
# *** To enable database aliases lookup execute:
#     - enable mysql
#     - define WITH_ALIASDB
#
# *** To enable multi-domain support execute:
#     - enable mysql
#     - define WITH_MULTIDOMAIN
#
# *** To enable TLS support execute:
#     - adjust CFGDIR/tls.cfg as needed
#     - define WITH_TLS
#
# *** To enable XMLRPC support execute:
#     - define WITH_XMLRPC
#     - adjust route[XMLRPC] for access policy
#
# *** To enable anti-flood detection execute:
#     - adjust pike and htable=>ipban settings as needed (default is
#       block if more than 16 requests in 2 seconds and ban for 300 seconds)
#     - define WITH_ANTIFLOOD
#
# *** To enhance accounting execute:
#     - enable mysql
#     - define WITH_ACCDB
#     - add following columns to database
#!ifdef ACCDB_COMMENT
  ALTER TABLE acc ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT '';
  ALTER TABLE acc ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT '';
  ALTER TABLE acc ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT '';
  ALTER TABLE acc ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT '';
  ALTER TABLE acc ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT '';
  ALTER TABLE missed_calls ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT
'';
  ALTER TABLE missed_calls ADD COLUMN src_domain VARCHAR(128) NOT NULL
DEFAULT '';
  ALTER TABLE missed_calls ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT
'';
  ALTER TABLE missed_calls ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT
'';
  ALTER TABLE missed_calls ADD COLUMN dst_domain VARCHAR(128) NOT NULL
DEFAULT ''; #!endif

####### Defined Values #########

# *** Value defines - IDs used later in config #!ifdef WITH_MYSQL # -
database URL - used to connect to database server by modules such
#       as: auth_db, acc, usrloc, a.s.o.
#!define ""mysql:[my_mysql_db_config]""
"mysql://openser:openserrw@localhost/openser"
#!endif
#!ifdef WITH_MULTIDOMAIN
# - the value for 'use_domain' parameters #!define MULTIDOMAIN 1 #!else
#!define MULTIDOMAIN 0 #!endif

# - flags
#   FLT_ - per transaction (message) flags
#       FLB_ - per branch flags
#!define FLT_ACC 1
#!define FLT_ACCMISSED 2
#!define FLT_ACCFAILED 3
#!define FLT_NATS 5
#!define FLB_NATB 6
#!define FLB_NATSIPPING 7

####### Global Parameters #########

#!ifdef WITH_DEBUG
debug=2
log_stderror=no
#!else
debug=2
log_stderror=no
#!endif

memdbg=5
memlog=5

log_facility=LOG_DAEMON

fork=yes
children=4

/* uncomment the next line to disable TCP (default on) */ disable_tcp=no

/* uncomment the next line to disable the auto discovery of local aliases
   based on reverse DNS on IPs (default on) */ #auto_aliases=no

/* add local domain aliases */


/* 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:[external_ip]:5060
listen=tcp:[external_ip]:5062
listen=tls:[external_ip]:5061
/* port to listen to
 * - can be specified more than once if needed to listen on many ports */
port=5060
port=5062
tls_port_no=5061

enable_tls=yes

#!ifdef WITH_TLS
enable_tls=yes
#!endif


####### 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 #

#!ifdef WITH_PSTN
# PSTN GW Routing
#
# - pstn.gw_ip: valid IP or hostname as string value, example:
# pstn.gw_ip = "10.0.0.101" desc "My PSTN GW Address"
#
# - by default is empty to avoid misrouting #pstn.gw_ip = "" desc "PSTN GW
Address"
#!endif


####### Modules Section ########

# set paths to location of modules
#!ifdef LOCAL_TEST_RUN
mpath="modules_k:modules"
#!else
mpath="/usr/lib/kamailio/modules_k/:/usr/lib/kamailio/modules/"
#!endif

#!ifdef WITH_MYSQL
loadmodule "db_mysql.so"
#!endif

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 "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "mi_rpc.so"
loadmodule "acc.so"
loadmodule "tls.so"

modparam("tls", "config", "/etc/kamailio/tls.cfg")

#!ifdef WITH_AUTH
loadmodule "auth.so"
loadmodule "auth_db.so"
#!ifdef WITH_IPAUTH
loadmodule "permissions.so"
#!endif
#!endif

#!ifdef WITH_ALIASDB
loadmodule "alias_db.so"
#!endif

#!ifdef WITH_MULTIDOMAIN
loadmodule "domain.so"
#!endif

#!ifdef WITH_PRESENCE
loadmodule "presence.so"
loadmodule "presence_xml.so"
#!endif

#!ifdef WITH_NAT
loadmodule "nathelper.so"
loadmodule "rtpproxy.so"
#!endif

#!ifdef WITH_TLS
loadmodule "tls.so"
#!endif

#!ifdef WITH_ANTIFLOOD
loadmodule "htable.so"
loadmodule "pike.so"
#!endif

#!ifdef WITH_XMLRPC
loadmodule "xmlrpc.so"
#!endif

# ----------------- setting module-specific parameters ---------------


# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")


# ----- tm params -----
# auto-discard branches from previous serial forking leg modparam("tm",
"failure_reply_mode", 3) # default retransmission timeout: 30sec
modparam("tm", "fr_timer", 30000) # default invite retransmission timeout
after 1xx: 120sec modparam("tm", "fr_inv_timer", 120000)


# ----- 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)


# ----- registrar 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)


# ----- acc params -----
/* what special events should be accounted ? */ modparam("acc",
"early_media", 0) modparam("acc", "report_ack", 0) modparam("acc",
"report_cancels", 0)
/* 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", "log_flag", FLT_ACC)
modparam("acc", "log_missed_flag", FLT_ACCMISSED) modparam("acc",
"log_extra", 
        
"src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
modparam("acc", "failed_transaction_flag", FLT_ACCFAILED)
/* enhanced DB accounting */
#!ifdef WITH_ACCDB
modparam("acc", "db_flag", FLT_ACC)
modparam("acc", "db_missed_flag", FLT_ACCMISSED) modparam("acc", "db_url",
""[my_mysql_db_config]"") 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_url", "[my_mysql_db_config]") modparam("usrloc",
"db_mode", 2) modparam("usrloc", "use_domain", MULTIDOMAIN) #!endif


# ----- auth_db params -----
#!ifdef WITH_AUTH
modparam("auth_db", "db_url", ""[my_mysql_db_config]"") modparam("auth_db",
"calculate_ha1", yes) modparam("auth_db", "password_column", "password")
modparam("auth_db", "load_credentials", "") modparam("auth_db",
"use_domain", MULTIDOMAIN)

# ----- permissions params -----
#!ifdef WITH_IPAUTH
modparam("permissions", "db_url", "[my_mysql_db_config]")
modparam("permissions", "db_mode", 1) #!endif

#!endif


# ----- alias_db params -----
#!ifdef WITH_ALIASDB
modparam("alias_db", "db_url", "[my_mysql_db_config]") modparam("alias_db",
"use_domain", MULTIDOMAIN) #!endif


# ----- domain params -----
#!ifdef WITH_MULTIDOMAIN
modparam("domain", "db_url", "[my_mysql_db_config]") # use caching
modparam("domain", "db_mode", 1) # register callback to match myself
condition with domains list modparam("domain", "register_myself", 1) #!endif


#!ifdef WITH_PRESENCE
# ----- presence params -----
modparam("presence", "db_url", "[my_mysql_db_config]")

# ----- presence_xml params -----
modparam("presence_xml", "db_url", "[my_mysql_db_config]")
modparam("presence_xml", "force_active", 1) #!endif


#!ifdef WITH_NAT
# ----- rtpproxy params -----
modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:22222")

# ----- nathelper params -----
modparam("nathelper", "natping_interval", 30) modparam("nathelper",
"ping_nated_only", 1) modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
modparam("nathelper", "sipping_from", "sip:pinger@[mydomain]")

# params needed for NAT traversal in other modules
modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")
modparam("usrloc", "nat_bflag", FLB_NATB) #!endif


#!ifdef WITH_TLS
# ----- tls params -----
modparam("tls", "config", "/etc/kamailio/tls.cfg") modparam("tls",
"tls_debug", 10) #!endif

#!ifdef WITH_ANTIFLOOD
# ----- pike params -----
modparam("pike", "sampling_time_unit", 2) modparam("pike",
"reqs_density_per_unit", 16) modparam("pike", "remove_latency", 4)

# ----- htable params -----
# ip ban htable with autoexpire after 5 minutes modparam("htable", "htable",
"ipban=>size=8;autoexpire=300;") #!endif

#!ifdef WITH_XMLRPC
# ----- xmlrpc params -----
modparam("xmlrpc", "route", "XMLRPC");
modparam("xmlrpc", "url_match", "^/RPC") #!endif

####### Routing Logic ########


# Main SIP request routing logic
# - processing of any incoming SIP request starts with this route route {

        # per request initial checks
        route(REQINIT);

        # NAT detection
        route(NAT);

        # handle requests within SIP dialogs
        route(WITHINDLG);

        ### only initial requests (no To tag)

        # 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(FLT_ACC); # do accounting
        }

        # dispatch requests to foreign domains
        route(SIPOUT);

        ### requests for my local domains

        # handle presence related requests
        route(PRESENCE);

        # handle registrations
        route(REGISTRAR);

        if ($rU==$null)
        {
                # request with no Username in RURI
                sl_send_reply("484","Address Incomplete");
                exit;
        }

        # dispatch destinations to PSTN
        route(PSTN);

        # user location service
        route(LOCATION);

        route(RELAY);
}


route[RELAY] {
#!ifdef WITH_NAT
        if (check_route_param("nat=yes")) {
                setbflag(FLB_NATB);
        }
        if (isflagset(FLT_NATS) || isbflagset(FLB_NATB)) {
                route(RTPPROXY);
        }
#!endif

        /* example how to enable some additional event routes */
        if (is_method("INVITE")) {
                #t_on_branch("BRANCH_ONE");
                t_on_reply("REPLY_ONE");
                t_on_failure("FAIL_ONE");
        }

        if (!t_relay()) {
                sl_reply_error();
        }
        exit;
}

# Per SIP request initial checks
route[REQINIT] {
#!ifdef WITH_ANTIFLOOD
        # flood dection from same IP and traffic ban for a while
        # be sure you exclude checking trusted peers, such as pstn gateways
        # - local host excluded (e.g., loop to self)
        if(src_ip!=myself)
        {
                if($sht(ipban=>$si)!=$null)
                {
                        # ip is already blocked
                        xdbg("request from blocked IP - $rm from $fu
(IP:$si:$sp)\n");
                        exit;
                }
                if (!pike_check_req())
                {
                        xlog("L_ALERT","ALERT: pike blocking $rm from $fu
(IP:$si:$sp)\n");
                        $sht(ipban=>$si) = 1;
                        exit;
                }
        }
#!endif

        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;
        }
}

# Handle requests within SIP dialogs
route[WITHINDLG] {
        if (has_totag()) {
                # sequential request withing a dialog should
                # take the path determined by record-routing
                if (loose_route()) {
                        if (is_method("BYE")) {
                                setflag(FLT_ACC); # do accounting ...
                                setflag(FLT_ACCFAILED); # ... 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() ) {
                                        # no 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
                                        exit;
                                }
                        }
                        sl_send_reply("404","Not here");
                }
                exit;
        }
}

# Handle SIP registrations
route[REGISTRAR] {
        if (is_method("REGISTER"))
        {
                if(isflagset(FLT_NATS))
                {
                        setbflag(FLB_NATB);
                        # uncomment next line to do SIP NAT pinging 
                        setbflag(FLB_NATSIPPING);
                }
                if (!save("location"))
                        sl_reply_error();

                exit;
        }
}

# USER location service
route[LOCATION] {

#!ifdef WITH_ALIASDB
        # search in DB-based aliases
        alias_db_lookup("dbaliases");
#!endif

        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
        if (is_method("INVITE"))
        {
                setflag(FLT_ACCMISSED);
        }
}

# Presence server route
route[PRESENCE] {
        if(!is_method("PUBLISH|SUBSCRIBE"))
                return;

#!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("$td", "subscriber"))
                {
                        www_challenge("$td", "0");
                        exit;
                }

                if ($au!=$tU)
                {
                        sl_send_reply("403","Forbidden auth ID");
                        exit;
                }
        } else {

#!ifdef WITH_IPAUTH
                if(allow_source_address())
                {
                        # source IP allowed
                        return;
                }
#!endif

                # authenticate if from local subscriber
                if (from_uri==myself)
                {
                        if (!proxy_authorize("$fd", "subscriber")) {
                                proxy_challenge("$fd", "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
                } else {
                        # caller is not local subscriber, then check if it
calls
                        # a local destination, otherwise deny, not an open
relay here
                        if (!uri==myself)
                        {
                                sl_send_reply("403","Not relaying");
                                exit;
                        }
                }
        }
#!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(FLT_NATS);
        }
#!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;
}

# Routing to foreign domains
route[SIPOUT] {
        if (!uri==myself)
        {
                append_hf("P-hint: outbound\r\n");
                route(RELAY);
        }
}

# 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;
}

# XMLRPC routing
#!ifdef WITH_XMLRPC
route[XMLRPC]
{
        # allow XMLRPC from localhost
        if ((method=="POST" || method=="GET")
                        && (src_ip==127.0.0.1)) {
                # close connection only for xmlrpclib user agents (there is
a bug in
                # xmlrpclib: it waits for EOF before interpreting the
response).
                if ($hdr(User-Agent) =~ "xmlrpclib")
                        set_reply_close();
                set_reply_no_connect();
                dispatch_rpc();
                exit;
        }
        send_reply("403", "Forbidden");
        exit;
}
#!endif

# 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(FLT_NATS) || isbflagset(FLB_NATB))
                        && 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(FLB_NATB) || isflagset(FLT_NATS))) {
                unforce_rtp_proxy();
        }
#!endif

        if (t_is_canceled()) {
                exit;
        }

        # uncomment the following lines if you want to block client 
        # redirect based on 3xx replies.
        ##if (t_check_status("3[0-9][0-9]")) {
        ##t_reply("404","Not found");
        ##      exit;
        ##}

        # uncomment the following lines if you want to redirect the failed 
        # calls to a different new destination
        ##if (t_check_status("486|408")) {
        ##      sethostport("192.168.2.100:5060");
        ##      append_branch();
        ##      # do not set the missed call flag again
        ##      t_relay();
        ##}
}


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