[OpenSIPS-Users] nathelper config

[Razvan Crainea]

Hi Nick,

What version of OpenSIPS are you using?
Since 1.6.3, the force_rtp_proxy function does exist anymore. It has 
been replaced with rtpproxy_offer/answer functions.

Regards,

--
Răzvan Crainea
OpenSIPS Developer


On 13.10.2011 11:30, Nick wrote:
> Hello
>
> When I start opensips. It display error. Can you give me any suggest? 
> Thanks
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: <force_rtp_proxy> 
> not found
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: <force_rtp_proxy> 
> not found
> Oct 13 16:27:49 [20343] CRITICAL:core:yyerror: parse error in config 
> file, line 231, column 19-20: unknown command <force_rtp_proxy>, 
> missing loadmodule?
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found 
> <t_on_reply>(1) in module tm [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found <t_relay>(0) 
> in module tm [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found 
> <sl_reply_error>(0) in module sl [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found 
> <fix_nated_contact>(0) in module nathelper 
> [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: <force_rtp_proxy> 
> not found
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: <force_rtp_proxy> 
> not found
> Oct 13 16:27:49 [20343] CRITICAL:core:yyerror: parse error in config 
> file, line 251, column 19-20: unknown command <force_rtp_proxy>, 
> missing loadmodule?
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found 
> <nat_uac_test>(1) in module nathelper 
> [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] DBG:core:find_cmd_export_t: found 
> <fix_nated_contact>(0) in module nathelper 
> [/usr/local/lib64/opensips/modules/]
> Oct 13 16:27:49 [20343] ERROR:core:main: bad config file (2 errors)
>
> It's my config for nat
> #
> # $Id: nathelper.cfg 8160 2011-07-12 15:54:30Z bogdan_iancu $
> #
> # simple quick-start config script including nathelper support
>
> # This default script includes nathelper support. To make it work
> # you will also have to install Maxim's RTP proxy. The proxy is enforced
> # if one of the parties is behind a NAT.
> #
> # If you have an endpoing in the public internet which is known to
> # support symmetric RTP (Cisco PSTN gateway or voicemail, for example),
> # then you don't have to force RTP proxy. If you don't want to enforce
> # RTP proxy for some destinations than simply use t_relay() instead of
> # route(1)
> #
> # Sections marked with !! Nathelper contain modifications for nathelper
> #
> # NOTE !! This config is EXPERIMENTAL !
> #
> # ----------- global configuration parameters ------------------------
>
> debug=4 # debug level (cmd line: -dddddddddd)
> fork=yes
> log_stderror=yes # (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
>
> db_default_url="postgres://opensips:opensipsrw@10.10.12.100/opensips"
> # ------------------ module loading ----------------------------------
>
> #set module path
> mpath="/usr/local/lib64/opensips/modules/"
>
> # Uncomment this if you want to use SQL database
> #loadmodule "db_mysql.so"
>
> loadmodule "db_postgres.so"
> loadmodule "sl.so"
> loadmodule "tm.so"
> loadmodule "signaling.so"
> loadmodule "rr.so"
> loadmodule "maxfwd.so"
> loadmodule "usrloc.so"
> loadmodule "registrar.so"
> loadmodule "textops.so"
> loadmodule "mi_fifo.so"
> loadmodule "uri.so"
> loadmodule "acc.so"
>
> # Uncomment this if you want digest authentication
> # db_mysql.so must be loaded !
> #loadmodule "auth.so"
> #loadmodule "auth_db.so"
>
> # !! Nathelper
> loadmodule "nathelper.so"
> #loadmodule "nat_traversal.so"
> #loadmodule "rtpproxy.so"
> loadmodule "dialog.so"
>
> # ----------------- setting module-specific parameters ---------------
>
> # -- mi_fifo params --
> modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
>
> # -- 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)
> # ----- uri params -----
> modparam("uri", "use_uri_table", 0)
>
>
> # ----- acc params -----
> /* what sepcial events should be accounted ? */
> modparam("acc", "early_media", 1)
> modparam("acc", "report_cancels", 1)
> /* 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", "failed_transaction_flag", 3)
> modparam("acc", "log_flag", 1)
> modparam("acc", "log_missed_flag", 2)
> /* uncomment the following lines to enable DB accounting also */
> modparam("acc", "db_flag", 1)
> modparam("acc", "db_missed_flag", 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")
>
> # !! Nathelper
> modparam("usrloc","nat_bflag",6)
> modparam("nathelper","sipping_bflag",8)
> 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");
> exit;
> };
> if (msg:len >= 2048 ) {
> sl_send_reply("513", "Message too big");
> exit;
> };
>
> # !! Nathelper
> # Special handling for NATed clients; first, NAT test is
> # executed: it looks for via!=received and RFC1918 addresses
> # in Contact (may fail if line-folding is used); also,
> # the received test should, if completed, should check all
> # vias for rpesence of received
> if (nat_uac_test("3")) {
> # Allow RR-ed requests, as these may indicate that
> # a NAT-enabled proxy takes care of it; unless it is
> # a REGISTER
>
> if (is_method("REGISTER") || !is_present_hf("Record-Route")) {
> log("LOG:Someone trying to register from private IP, rewriting\n");
> # This will work only for user agents that support symmetric
> # communication. We tested quite many of them and majority is
> # smart enough to be symmetric. In some phones it takes a
> # configuration option. With Cisco 7960, it is called
> # NAT_Enable=Yes, with kphone it is called "symmetric media" and
> # "symmetric signalling".
>
> # Rewrite contact with source IP of signalling
> fix_nated_contact();
> if ( is_method("INVITE") ) {
> fix_nated_sdp("1"); # Add direction=active to SDP
> };
> force_rport(); # Add rport parameter to topmost Via
> setbflag(6); # Mark as NATed
>
> # if you want sip nat pinging
> # setbflag(8);
> };
> };
>
> # subsequent messages withing a dialog should take the
> # path determined by record-routing
> if (loose_route()) {
> # mark routing logic in request
> append_hf("P-hint: rr-enforced\r\n");
> route(1);
> exit;
> };
>
> # we record-route all messages -- to make sure that
> # subsequent messages will go through our proxy; that's
> # particularly good if upstream and downstream entities
> # use different transport protocol
> if (!is_method("REGISTER"))
> record_route();
>
> if (!uri==myself) {
> # mark routing logic in request
> append_hf("P-hint: outbound\r\n");
> route(1);
> exit;
> };
>
> # if the request is for other domain use UsrLoc
> # (in case, it does not work, use the following command
> # with proper names and addresses in it)
> if (uri==myself) {
>
> if (is_method("REGISTER")) {
>
> # Uncomment this if you want to use digest authentication
> #if (!www_authorize("siphub.org", "subscriber")) {
> # www_challenge("siphub.org", "0");
> # return;
> #};
>
> save("location");
> exit;
> };
>
> lookup("aliases");
> if (!uri==myself) {
> append_hf("P-hint: outbound alias\r\n");
> route(1);
> exit;
> };
>
> # native SIP destinations are handled using our USRLOC DB
> if (!lookup("location")) {
> sl_send_reply("404", "Not Found");
> exit;
> };
> };
> 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");
> exit;
> };
>
> # if client or server know to be behind a NAT, enable relay
> if (isbflagset(6)) {
> force_rtp_proxy();
> };
>
> # NAT processing of replies; apply to all transactions (for example,
> # re-INVITEs from public to private UA are hard to identify as
> # NATed at the moment of request processing); look at replies
> t_on_reply("1");
>
> # send it out now; use stateful forwarding as it works reliably
> # even for UDP2TCP
> if (!t_relay()) {
> sl_reply_error();
> };
> }
>
> # !! Nathelper
> onreply_route[1] {
> # NATed transaction ?
> if (isbflagset(6) && status =~ "(183)|2[0-9][0-9]") {
> fix_nated_contact();
> force_rtp_proxy();
> # otherwise, is it a transaction behind a NAT and we did not
> # know at time of request processing ? (RFC1918 contacts)
> } else if (nat_uac_test("1")) {
> fix_nated_contact();
> };
> }
>
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