You are confronted with the classic problem “this voice switch was designed to
handle UDP and voice calls only” problem.
This is a VoIP industry level problem, which is yet to be properly addressed by
anyone in the field.
Adrian
On 07 May 2014, at 21:16, Maksim Solovjov <maxim.solov...@gmail.com> wrote:
> Hello,
>
> From time to time I am encountering a problem while sending instant
> messages ( using sip MESSAGE request ) or sending call invites.
> Sometimes it works well and fast, sometimes it doesn't, sometimes
> messages are delivered very slowly. With two last options ( doesn't
> work at all and/or messages are delivered slowly ), I get the
> following errors:
>
> ERROR:core:tcp_blocking_connect: timeout 10 s elapsed from 10 s
> ERROR:core:tcpconn_connect: tcp_blocking_connect failed
> ERROR:core:tcp_send: connect failed
> ERROR:tm:msg_send: tcp_send failed
> ERROR:tm:t_forward_nonack: sending request failed
>
> My devices are behind NAT ( mobile phones ) and I am using pjsip with
> tcp connection.
> Moreover I am trying to set up a persistent connection and hope, that
> server will reuse it, when it needs to send something. I am sending
> keep-alive packets every 600 seconds and I am not using any STUN or
> TURN servers.
>
> My opensips and rtpproxy are running on EC2, so are behind NAT as well.
> And I don't have any STUN or TURN servers intalled ( should I install
> any of it? )
>
> Any help, advice or suggestions would be highly appreciated!
> Here is my opensips.cfg, please help:
>
> debug=3
> log_stderror=no
> log_facility=LOG_LOCAL1
>
> fork=yes
> children=4
>
> dns=no
> rev_dns=no
>
> disable_tcp=no
>
> listen=udp:private-ip:5060 # CUSTOMIZE ME
> listen=tcp:private-ip:5060
>
> advertised_address="public-ip"
> alias="public-ip:5060"
> alias="domain.com:5060" #// NB!! domain address is not associated with
> public-ip ( using A record )
>
> db_default_url="mysql://opensips:opensipsrw@database-url/opensips"
>
> mpath="/usr/lib64/opensips/modules/"
>
> ### MYSQL module
> loadmodule "db_mysql.so"
>
> ### Domain module
> loadmodule "domain.so"
> modparam("domain", "db_url",
> "mysql://opensips:opensipsrw@database-url/opensips")
>
>
> #### SIGNALING module
> loadmodule "signaling.so"
>
> #### StateLess module
> loadmodule "sl.so"
>
> #### Transaction Module
> loadmodule "tm.so"
> modparam("tm", "fr_timer", 5)
> modparam("tm", "fr_inv_timer", 30)
> modparam("tm", "restart_fr_on_each_reply", 0)
> modparam("tm", "onreply_avp_mode", 1)
>
> #### Record Route Module
> loadmodule "rr.so"
> /* do not append from tag to the RR (no need for this script) */
> modparam("rr", "append_fromtag", 0)
>
> #### MAX ForWarD module
> loadmodule "maxfwd.so"
>
> #### SIP MSG OPerationS module
> loadmodule "sipmsgops.so"
>
> #### FIFO Management Interface
> loadmodule "mi_fifo.so"
> modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
> modparam("mi_fifo", "fifo_mode", 0666)
>
> #### URI module
> loadmodule "uri.so"
> modparam("uri", "use_uri_table", 0)
>
> #### USeR LOCation module
> loadmodule "usrloc.so"
> modparam("usrloc", "nat_bflag", "NAT")
> modparam("usrloc", "db_mode", 0)
>
> #### REGISTRAR module
> loadmodule "registrar.so"
> modparam("registrar", "tcp_persistent_flag", "TCP_PERSISTENT")
> modparam("registrar", "received_avp", "$avp(rcv)")
>
> loadmodule "nathelper.so"
> modparam("nathelper", "received_avp", "$avp(rcv)")
>
> loadmodule "rtpproxy.so"
> modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:12221")
>
> #### ACCounting module
> loadmodule "acc.so"
> modparam("acc", "early_media", 0)
> modparam("acc", "report_cancels", 0)
> modparam("acc", "detect_direction", 0)
> modparam("acc", "failed_transaction_flag", "ACC_FAILED")
> modparam("acc", "log_flag", "ACC_DO")
> modparam("acc", "log_missed_flag", "ACC_MISSED")
>
>
> route{
>
> force_rport(); #nathelper
> if (nat_uac_test("23")) { #nathelper
> if (is_method("REGISTER")) {
> fix_nated_register(); #nathelper
> setbflag(NAT);
> } else {
> fix_nated_contact(); #nathelper
> setflag(NAT);
> }
> }
>
> if (!mf_process_maxfwd_header("10")) {
> sl_send_reply("483","Too Many Hops");
> exit;
> }
> if (has_totag()) {
> # sequential requests within a dialog should
> # take the path determined by record-routing
> if (loose_route()) {
>
> if (is_method("BYE")) {
> setflag(ACC_DO); # do accounting ...
> setflag(ACC_FAILED); # ... even if the
> transaction fails
> } else if (is_method("INVITE")) {
> # even if in most of the cases is
> useless, do RR for
> # re-INVITEs alos, as some buggy
> clients do change route set
> # during the dialog.
> record_route();
> }
>
> if (check_route_param("nat=yes"))
> setflag(NAT);
>
> # route it out to whatever destination was set
> by loose_route()
> # in $du (destination URI).
> route(relay);
> } else {
> if ( is_method("ACK") ) {
> if ( t_check_trans() ) {
> # non loose-route, but
> stateful ACK; must be an ACK after
> # a 487 or e.g. 404 from upstream
> server
> t_relay();
> exit;
> } else {
> # ACK without matching transaction ->
> # ignore and discard
> exit;
> }
> }
> sl_send_reply("404","Not here");
> }
> exit;
> }
> # CANCEL processing
> if (is_method("CANCEL"))
> {
> if (t_check_trans())
> t_relay();
> exit;
> }
>
> t_check_trans();
>
> if ( !(is_method("REGISTER") ) ) {
> if (from_uri==myself)
> {
> } else {
> # if caller is not local, then called number
> must be local
> if (!uri==myself) {
> send_reply("403","Rely forbidden");
> exit;
> }
> }
> }
> # preloaded route checking
> if (loose_route()) {
> xlog("L_ERR",
> "Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci]");
> if (!is_method("ACK"))
> sl_send_reply("403","Preload Route denied");
> exit;
> }
>
> # record routing
> if (!is_method("REGISTER|MESSAGE"))
> record_route();
>
> # account only INVITEs
> if (is_method("INVITE")) {
>
> setflag(ACC_DO); # do accounting
> }
>
> if (!uri==myself) {
> append_hf("P-hint: outbound\r\n");
> route(relay);
> }
> # requests for my domain
> if (is_method("PUBLISH|SUBSCRIBE"))
> {
> sl_send_reply("503", "Service Unavailable");
> exit;
> }
>
> if (is_method("REGISTER"))
> {
> setflag(TCP_PERSISTENT);
> if (!save("location"))
> sl_reply_error();
>
> exit;
> }
>
> if ($rU==NULL) {
> # request with no Username in RURI
> sl_send_reply("484","Address Incomplete");
> exit;
> }
> # do lookup with method filtering
> if (!lookup("location","m")) {
> t_newtran();
> t_reply("404", "Not Found");
> exit;
> }
>
> if (isbflagset(NAT)) setflag(NAT);
>
> # when routing via usrloc, log the missed calls also
> setflag(ACC_MISSED);
> route(relay);
> }
>
> route[relay] {
> # for INVITEs enable some additional helper routes
> if (is_method("INVITE")) {
>
> if (isflagset(NAT)) {
> rtpproxy_offer("ro");
> }
>
> t_on_branch("per_branch_ops");
> t_on_reply("handle_nat");
> t_on_failure("missed_call");
>
> }
>
> if (isflagset(NAT)) {
> add_rr_param(";nat=yes");
> }
>
> if (!t_relay()) {
> send_reply("500","Internal Error");
> };
> exit;
> }
>
> branch_route[per_branch_ops] {
> xlog("new branch at $ru\n");
> }
>
>
> onreply_route[handle_nat] {
> if (nat_uac_test("1"))
> fix_nated_contact();
> if ( isflagset(NAT) )
> rtpproxy_answer("ro");
> xlog("incoming reply\n");
> }
>
> failure_route[missed_call] {
> if (t_was_cancelled()) {
> 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;
> ##}
>
> }
>
>
> Thank you in advance!
>
> _______________________________________________
> Users mailing list
> Users@lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
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