[Serusers] problems to use to SER/ NAT - sr-users

6 May 2004


      hello
if I utilize rtpproxy.
I show it my configuration :
1- rtpproxy -l ip-private/ip-public
2- ser.cfg
# Sections marked with !! Nathelper contain modifications for nathelper
#
# NOTE !! This config is EXPERIMENTAL !
#
# ----------- global configuration parameters ------------------------
debug=3         # 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=5060
children=4
fifo="/tmp/ser_fifo"
listen=200.61.161.132
alias="sip.boxip.com.ar"
# ------------------ 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"
# Uncomment this if you want digest authentication
# mysql.so must be loaded !
#loadmodule "/usr/local/lib/ser/modules/auth.so"
#loadmodule "/usr/local/lib/ser/modules/auth_db.so"
# !! Nathelper
loadmodule "/usr/local/lib/ser/modules/nathelper.so"
# ----------------- setting module-specific parameters ---------------
# -- usrloc params --
modparam("usrloc", "db_mode",   0)
# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
#modparam("usrloc", "db_mode", 2)
# -- auth params --
# Uncomment if you are using auth module
#modparam("auth_db", "calculate_ha1", yes)
# If you set "calculate_ha1" parameter to yes (which true in this config),
# uncomment also the following parameter)
#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)
# !! Nathelper
modparam("registrar", "nat_flag", 6)
modparam("nathelper", "natping_interval", 30) # Ping interval 30 s
modparam("nathelper", "ping_nated_only", 1)   # Ping only clients behind NAT
# -------------------------  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;
        };
if (nat_uac_test("3")) {
if (method == "REGISTER" || ! search("^Record-Route:")) {
                    log("LOG: Someone trying to register from private IP,
rewriting\n");
                    fix_nated_contact(); # Rewrite contact with source IP of
signalling
                    if (method == "INVITE") {
                        fix_nated_sdp("1"); # Add direction=active to SDP
                    };
                    force_rport(); # Add rport parameter to topmost Via
                    setflag(6);    # Mark as NATed
                };
        };
if (!method=="REGISTER") record_route();
if (loose_route()) {
                # mark routing logic in request
                append_hf("P-hint: rr-enforced\r\n");
                route(1);
                break;
        };
if (!uri==myself) {
                # mark routing logic in request
                append_hf("P-hint: outbound\r\n");
                route(1);
                break;
        };
        if (uri==myself) {
if (method=="REGISTER") {
# Uncomment this if you want to use digest authentication
#                       if (!www_authorize("iptel.org", "subscriber")) {
#                               www_challenge("iptel.org", "0");
#                               break;
#                       };
                        log(1,"registo 1");
                        save("location");
                        break;
                };
lookup("aliases");
                if (!uri==myself) {
                        append_hf("P-hint: outbound alias\r\n");
                        route(1);
                        break;
                };
# native SIP destinations are handled using our USRLOC DB
                if (!lookup("location")) {
                        sl_send_reply("404", "Not Found");
                        break;
                };
        };
        append_hf("P-hint: usrloc applied\r\n");
        route(1);
}
route[1]
{
        # !! Nathelper
        if (uri=~"[@:](192.168.|10.|172.(1[6-9]|2[0-9]|3[0-1]).)" &&
!search("^Route:")){
            sl_send_reply("479", "We don't forward to private IP
addresses");
            break;
        };
if (isflagset(6)) {
            force_rtp_proxy();
        };
t_on_reply("1");
if (!t_relay()) {
                sl_reply_error();
        };
}
# !! Nathelper
onreply_route[1] {
    # NATed transaction ?
    if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") {
        fix_nated_contact();
        force_rtp_proxy();
    } else if (nat_uac_test("1")) {
        fix_nated_contact();
    };
}
3- my log
May  4 16:46:36 chitara rtpproxy[5767]: rtpproxy started.
May  4 16:46:40 chitara rtpproxy[5767]: error: received invalid command 'V'
May  4 16:46:40 chitara ser[5770]: ERROR: send_rtpp_command: can't read
reply from a RTP proxy
May  4 16:46:40 chitara ser[5770]: WARNING: nathelper: can't get version of
the RTP proxy
May  4 16:46:40 chitara ser[5770]: WARNING: nathelper: support for RTP
proxyhas been disabled
May  4 16:46:40 chitara ser[5770]: INFO: udp_init: SO_RCVBUF is initially
65535
May  4 16:46:40 chitara ser[5770]: INFO: udp_init: SO_RCVBUF is finally
131070
May  4 16:46:40 chitara ser[5775]: INFO: fifo process starting: 5775
May  4 16:46:40 chitara ser[5775]: SER: open_uac_fifo: fifo server up at
/tmp/ser_fifo...
May  4 16:46:40 chitara ser[5775]: WARNING: no fifo_db_url given - fifo DB
commands disabled!
May  4 16:48:05 chitara ser[5771]: registo 1
May  4 16:48:05 chitara ser[5773]: registo 1
May  4 16:48:10 chitara ser[5771]: registo 1
May  4 16:48:10 chitara ser[5774]: registo 1
May  4 16:48:34 chitara ser[5774]: registo 1
May  4 16:48:35 chitara ser[5771]: registo 1
May  4 16:48:39 chitara ser[5774]: ERROR: force_rtp_proxy: support for RTP
proxy is disabled
May  4 16:48:42 chitara ser[5774]: ERROR: force_rtp_proxy: support for RTP
proxy is disabled
May  4 16:48:42 chitara ser[5774]: ERROR: on_reply processing failed
May  4 16:48:42 chitara ser[5771]: ERROR: force_rtp_proxy: support for RTP
proxy is disabled
thanks
Saludos!
Sergio