Como configurar o servidor proxy kamailio e rotear chamadas para o Twilio?

1

Estou tentando rotear todas as chamadas para o twilio através do proxy kamailio. com o meu arquivo de configuração, a chamada é conectada e cai automaticamente após cerca de 30 segundos. Isso ocorre porque o ACK enviado para o twilio por 200 OK não estava correto. Twilio espera o ACK com ruri igual ao contato na resposta 200 OK, mas o kamailio enviado foi diferente. Como corrigir esse erro?

200 OK response

[email protected]|k

SIP/2.0 200 OK
To: <sip:[email protected]>;tag=52642973_6772d868_f5ff7ec8-2860-4963-894d-4686de291299
Via: SIP/2.0/UDP 54.69.159.69:5060;branch=z9hG4bKcdde.3a10daa4c4dfb45218165e7003bc1925.0
Via: SIP/2.0/UDP 64.2.142.90;branch=z9hG4bKcdde.0da1e6a5.0
Via: SIP/2.0/UDP 64.2.142.153:5060;received=64.2.142.153;branch=z9hG4bK0c18e9b5;rport=5060
Record-Route: <sip:107.21.211.20:5060;lr;ftag=as0b111d7b>
Record-Route: <sip:54.69.159.69:5060;lr=on>
Record-Route: <sip:64.2.142.90;lr=on>
CSeq: 102 INVITE
Call-ID: [email protected]
From: "+14088271419" <sip:[email protected]>;tag=as0b111d7b
Contact: <sip:10.108.170.11:5060>
Content-Type: application/sdp
X-Twilio-CallSid: CA2d519006d553f3acf89f1dd2fef77cc3
Content-Length: 247

v=0
o=- 1132985615 1132985615 IN IP4 54.82.64.195
s=session
c=IN IP4 54.82.64.195
t=0 0
m=audio 13800 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv

ACK encaminhado para twilio

E@d
kCACK sip:107.21.211.20:5060;lr;ftag=as0b111d7b SIP/2.0
Via: SIP/2.0/UDP 54.69.159.69:5060;branch=z9hG4bKcdde.95210bf832aa38aeeccc727ba583b66f.0
Via: SIP/2.0/UDP 54.69.159.69:5060;branch=z9hG4bKcdde.0a606545da03734a8b332edc9b21079f.0
Via: SIP/2.0/UDP 64.2.142.90;branch=z9hG4bKcdde.0da1e6a5.2
Via: SIP/2.0/UDP 64.2.142.153:5060;received=64.2.142.153;branch=z9hG4bK32a73a53;rport=5060
From: "+14088271419" <sip:[email protected]>;tag=as0b111d7b
To: <sip:[email protected]:5060>;tag=52642973_6772d868_f5ff7ec8-2860-4963-894d-4686de291299
Contact: <sip:[email protected]>
Call-ID: [email protected]
CSeq: 102 ACK
User-Agent: packetrino
Max-Forwards: 67
Content-Length: 0

este é o meu arquivo de configuração. (os nomes de ip e conta são alterados)

#!KAMAILIO
#
# sample config file for dispatcher module
# - load balancing of VoIP calls with round robin
# - no TPC listening
# - don't dispatch REGISTER and presence requests
# Direct your questions about this file to: [email protected]
#
#
# *** To run in debug mode: 
#     - define WITH_DEBUG
#

#!ifndef DBURL
#!define DBURL "mysql://kamailio:kamailiorw@localhost/kamailio"
#!endif

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

#!ifdef WITH_DEBUG
debug=4
log_stderror=yes
#!else
debug=2
log_stderror=no
#!endif

memdbg=5
memlog=5

log_facility=LOG_LOCAL0

fork=yes
children=4

/* comment the next line to enable TCP */
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

/* add local domain aliases */

alias="54.69.159.69"

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:172.31.22.10:5060 advertise 54.69.159.69:5060
#advertised_address="54.69.159.69"
#advertised_port=5060
sip_warning=no

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

#set module path
mpath="/usr/local/lib64/kamailio/modules_k/:/usr/local/lib64/kamailio/modules/"

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 "textops.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "mi_rpc.so"
loadmodule "acc.so"
loadmodule "dispatcher.so"
loadmodule "pdt.so"
loadmodule "nathelper.so"
loadmodule "avpops.so"
loadmodule "htable.so"

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


# ----- acc params -----
modparam("acc", "log_flag", 1)
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_extra", 
    "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd;src_ip=$si")

# ----- tm params -----
modparam("tm", "fr_timer", 2000)
modparam("tm", "fr_inv_timer", 40000)

# ----- dispatcher params -----
modparam("dispatcher", "db_url", DBURL)
modparam("dispatcher", "table_name", "dispatcher")
modparam("dispatcher", "flags_col", "flags")
modparam("dispatcher", "priority_col", "priority")
modparam("dispatcher", "dst_avp", "$avp(AVP_DST)")
modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)")
modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")

modparam("dispatcher", "force_dst", 1)


#-------pdt--------------
modparam("pdt", "db_table", "pdt")
modparam("pdt", "domain_column", "sdomain")
modparam("pdt", "prefix_column", "prefix")
modparam("pdt", "domain_column", "domain")


#-----------------nat-----------
modparam("nathelper", "natping_interval", 0)
modparam("nathelper", "ping_nated_only", 0)
#modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
modparam("nathelper", "sipping_from", "sip:172.31.22.10:5060")

#-----------acc------------
modparam("acc", "report_ack", 1)




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


# main request routing logic

route {


     # per request initial checks
    route(REQINIT);

    # 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();

    # record routing for dialog forming requests (in case they are routed)
    # - remove preloaded route headers
    remove_hf("Route");
    if (is_method("INVITE|SUBSCRIBE"))

    #add_rr_param(";nat=yes");
    record_route_advertised_address("54.69.159.69:5060");
    #record_route();

    # account only INVITEs
    if (is_method("INVITE"))
    {
        setflag(1); # do accounting
    }


    # 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
    route(DISPATCH);
}


route[RELAY] {
    if (!t_relay()) {
        sl_reply_error();
    }
    exit;
}

# Per SIP request initial checks
route[REQINIT] {
    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] {
    t_check_trans();
    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 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"))
        return;
    sl_send_reply("404", "No registrar");
    exit;
}

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

    sl_send_reply("404", "Not here");
    exit;
}

# Dispatch requests
route[DISPATCH] {

    if(prefix2domain("2", "0")) { 
        $ru = "sip:" + $rU + "@" + $rd;
        t_relay();
        exit;

    }

    # round robin dispatching on gateways group '1'
    if(!ds_select_dst("1", "4"))
    {
        send_reply("404", "No destination");
        exit;
    }
    xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n");
    t_on_failure("RTF_DISPATCH");
    route(RELAY);
    exit;
}

# Sample failure route
failure_route[RTF_DISPATCH] {
    if (t_is_canceled()) {
        exit;
    }
    # next DST - only for 500 or local timeout
    if (t_check_status("500")
            or (t_branch_timeout() and !t_branch_replied()))
    {
        if(ds_next_dst())
        {
            t_on_failure("RTF_DISPATCH");
            route(RELAY);
            exit;
        }
    }
}
    
por spali 11.11.2014 / 12:43

0 respostas

Tags