[Serusers] No sound with ser 0.9.0 and mediaproxy 1.2.1
Greger V. Teigre
greger at teigre.com
Sun May 29 09:51:12 CEST 2005
Firewall in front of mediaproxy with closed ports UDP > 1000? DoS
protection that kicks in (lots of small UDP packets). I know Zyxel will do
that sometimes.
Could also be a problem in the setup of your clients. Do they find a common
codec?
Look in /var/log/messages for errors from proxydispatcher or mediaproxy. You
could have a problem with the communication.
Check the INVITE from ser to callee and the OK from callee to caller. Both
should have an SDP line with m= and then the IP address of your mediaproxy.
g-)
Roger Lewau wrote:
> Hello list...
>
> I've installed SER 0.9.0 and mediaproxy 1.2.1 and dowloaded the
> getting started scripts (issue 04a) from onsip.org.
> Setup everything as instructed, added a couple of users to the
> database and tried to setup a call between one public and one NATed
> UA.
> Both phones register properly and signalling seems to be working
> fine, I ring each device from the other, problem is there is no sound.
>
> So I checked the mediaproxy sessions... and it looks like this
>
>
> Caller Via Called
> Status Duration Codec Type Traffic
> ----------------------------------------------------------------------------
> ----------------------------------
> 82.182.194.x:5004 - 212.247.91.x:35014 - 82.182.194.x:49160 inactive
> 0'07" Unknown Audio 0/0/0
>
> Total traffic: 0bps/0bps/0bps (in1/in2/out)
> Session count: 1
>
> I dont really understand the output but I think "inactive" as well as
> "Unknown Audio" is not a good sign.
>
> How ever, I then used Ngrep to see if there are some rtp traffic
> going on and sure enough, there is traffic comming in from both UAs
> but no traffic is leaving the proxy. Strange!
>
> Anyone with some bright idea on why mediaproxy is not relaying the
> sound?
>
> My ser.cfg
> ===================================
>
> debug=3
> fork=yes
> log_stderror=no
>
> listen=212.247.91.<hidden> # INSERT YOUR IP ADDRESS HERE
> port=5060
> children=4
> alias=sip.<somedomain>.com
> dns=no
> rev_dns=no
>
> fifo="/tmp/ser_fifo"
> fifo_db_url="mysql://ser:heslo@localhost/ser"
>
> 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/auth.so"
> loadmodule "/usr/local/lib/ser/modules/auth_db.so"
> loadmodule "/usr/local/lib/ser/modules/uri.so"
> loadmodule "/usr/local/lib/ser/modules/uri_db.so"
> loadmodule "/usr/local/lib/ser/modules/mediaproxy.so"
> loadmodule "/usr/local/lib/ser/modules/nathelper.so"
> loadmodule "/usr/local/lib/ser/modules/textops.so"
> loadmodule "/usr/local/lib/ser/modules/avpops.so"
> loadmodule "/usr/local/lib/ser/modules/domain.so"
> loadmodule "/usr/local/lib/ser/modules/permissions.so"
>
> modparam("auth_db|permissions|uri_db|usrloc", "db_url",
> "mysql://ser:heslo@localhost/ser")
> modparam("auth_db", "calculate_ha1", 1)
> modparam("auth_db", "password_column", "password")
>
> #modparam("nathelper", "rtpproxy_disable", 1)
> #modparam("nathelper", "natping_interval", 0)
>
> modparam("mediaproxy","natping_interval", 30)
> modparam("mediaproxy","mediaproxy_socket", "/var/run/mediaproxy.sock")
> modparam("mediaproxy","sip_asymmetrics","/usr/local/etc/ser/sip-clients")
> modparam("mediaproxy","rtp_asymmetrics","/usr/local/etc/ser/rtp-clients")
>
> modparam("usrloc", "db_mode", 2)
>
> modparam("registrar", "nat_flag", 6)
>
> modparam("rr", "enable_full_lr", 1)
>
> modparam("tm", "fr_inv_timer", 27)
> modparam("tm", "fr_inv_timer_avp", "inv_timeout")
>
> modparam("permissions", "db_mode", 1)
> modparam("permissions", "trusted_table", "trusted")
>
> route {
> # -----------------------------------------------------------------
> # Sanity Check Section
> # -----------------------------------------------------------------
> if (!mf_process_maxfwd_header("10")) {
> sl_send_reply("483", "Too Many Hops");
> break;
> };
>
> if (msg:len > max_len) {
> sl_send_reply("513", "Message Overflow");
> break;
> };
>
> # -----------------------------------------------------------------
> # Record Route Section
> # -----------------------------------------------------------------
> if (method=="INVITE" && client_nat_test("3")) {
> # INSERT YOUR IP ADDRESS HERE
> record_route_preset("212.247.91.<hidden>:5060;nat=yes");
> } else if (method!="REGISTER") {
> record_route();
> };
>
> # -----------------------------------------------------------------
> # Call Tear Down Section
> # -----------------------------------------------------------------
> if (method=="BYE" || method=="CANCEL") {
> end_media_session();
> };
>
> # -----------------------------------------------------------------
> # Loose Route Section
> # -----------------------------------------------------------------
> if (loose_route()) {
>
> if (has_totag() && (method=="INVITE" || method=="ACK")) {
>
> if (client_nat_test("3")||search("^Route:.*;nat=yes")){
> setflag(6);
> use_media_proxy();
> };
> };
>
> route(1);
> break;
> };
>
> # -----------------------------------------------------------------
> # Call Type Processing Section
> # -----------------------------------------------------------------
>
> if (uri!=myself) {
> route(1);
> break;
> };
>
> if (uri==myself) {
> if (method=="ACK") {
> route(6);
> break;
> } else if (method=="CANCEL") {
> route(3);
> break;
> } else if (method=="INVITE") {
> route(3);
> break;
> } else if (method=="REGISTER") {
> route(2);
> break;
> };
>
> lookup("aliases");
> if (uri!=myself) {
> route(1);
> break;
> };
>
> if (!lookup("location")) {
> sl_send_reply("404", "User Not Found");
> break;
> };
> };
> log("NO MATCH");
> route(1);
> }
>
> route[1] {
>
> # -----------------------------------------------------------------
> # Default Message Handler
> # -----------------------------------------------------------------
>
> t_on_reply("1");
>
> if (!t_relay()) {
>
> if (method=="INVITE" || method=="ACK") {
> end_media_session();
> };
>
> sl_reply_error();
> };
> }
>
> route[2] {
>
> # -----------------------------------------------------------------
> # REGISTER Message Handler
> # -----------------------------------------------------------------
>
> sl_send_reply("100", "Trying");
>
> if (!search("^Contact:\ +\*") && client_nat_test("7")) {
> setflag(6);
> fix_nated_register();
> force_rport();
> };
>
> if (!www_authorize("","subscriber")) {
> www_challenge("","0");
> break;
> };
>
> if (!check_to()) {
> sl_send_reply("401", "Unauthorized");
> break;
> };
>
> consume_credentials();
>
> if (!save("location")) {
> sl_reply_error();
> };
> }
>
> route[3] {
>
> # -----------------------------------------------------------------
> # CANCEL and INVITE Message Handler
> # -----------------------------------------------------------------
>
> if (client_nat_test("3")) {
> setflag(7);
> force_rport();
> fix_nated_contact();
> };
>
> if (method=="INVITE" && !allow_trusted()) {
>
> if (!proxy_authorize("","subscriber")) {
> proxy_challenge("","0");
> break;
> } else if (!check_from()) {
> sl_send_reply("403", "Use From=ID");
> break;
> };
>
> consume_credentials();
> };
>
> lookup("aliases");
> if (uri!=myself) {
> route(1);
> break;
> };
>
> if (uri=~"^sip:[+|00][0-9]*@") { # International PSTN inleds antingen
> med + eller 00
> route(4);
> break;
> };
>
> if (!lookup("location")) {
>
> if (uri=~"^sip:0[1-9]*@") { # Domestic PSTN startar med 0
> route(4);
> break;
> };
>
> sl_send_reply("404", "User Not Found");
> break;
> };
>
> if (method=="CANCEL") {
> route(1);
> break;
> };
>
> route(5);
> route(1);
> }
>
> route[4] {
>
> # -----------------------------------------------------------------
> # PSTN Handler
> # -----------------------------------------------------------------
>
> rewritehost("192.0.2.245"); # INSERT YOUR PSTN GATEWAY IP ADDRESS
>
> avp_write("i:45", "inv_timeout");
>
> route(5);
> route(1);
> }
>
> route[5] {
>
> # -----------------------------------------------------------------
> # RTP Proxy Enabler
> # -----------------------------------------------------------------
>
> if (isflagset(6) || isflagset(7)) {
> use_media_proxy();
> };
> }
>
> route[6] {
>
> #
> ------------------------------------------------------------------------
> # ACK Handler #
> ------------------------------------------------------------------------
>
> #
> ------------------------------------------------------------------------
> # Aliases Section #
> ------------------------------------------------------------------------
> lookup("aliases");
> if (uri!=myself) {
> route(1);
> break;
> };
>
> lookup("location");
>
> route(1);
> }
>
>
> onreply_route[1] {
>
> if ((isflagset(6) || isflagset(7)) &&
> (status=~"(180)|(183)|2[0-9][0-9]")) {
>
> if (!search("^Content-Length:\ +0")) {
> use_media_proxy();
> };
> };
>
> if (client_nat_test("1")) {
> fix_nated_contact();
> };
> }
>
> ==================================
>
> My mediaproxy.ini
> ==================================
> ;
> ; Configuration file for MediaProxy
> ;
>
> [Dispatcher]
>
> [MediaProxy]
> start = yes
> socket = /var/run/mediaproxy.sock
> group = ser
> ;listen = None
> allow = Any
> proxyIP = 212.247.91.<hidden>
> portRange = 35000:65000
> TOS = 0xb8
> idleTimeout = 60
> holdTimeout = 3600
> ;forceClose = 0
> accounting = off
>
> [Accounting]
> user = dbuser
> password = dbpass
> host = dbhost
> database = radius
> table = radacct
>
> ==================================
>
>
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