[Serusers] nathelper ERROR: extract_mediaip: no `c=' in SDP
Charles Wang
lazy.charles at gmail.com
Fri Feb 18 05:57:11 CET 2005
I miss these line at my end of ser.cfg. I ever add them in it but I
make a mistake to remove them sometime. Thank you for your answer. :)
Best Regard
Charles
On Thu, 17 Feb 2005 21:37:41 -0500, Java Rockx <javarockx at gmail.com> wrote:
> Charles,
>
> Not all reply messages have an SDP payload so I got around this
> problem by checking the content length header
>
> onreply_route[1] {
> if (status=~"(180)|(183)|(2[0-9][0-9])" &&
> !search("^Content-Length:\ 0")) {
> # nathelper stuff goes here
> };
> }
>
> Regards,
> Paul
>
>
> On Fri, 18 Feb 2005 10:25:34 +0800, Charles Wang <lazy.charles at gmail.com> wrote:
> > Thanks Marian's help and answer. I can make a call from domainA to
> > domainB via PDT module.
> >
> > But I got another error message from nathelper or rtpproxy.
> > It is "ERROR: extract_mediaip: no `c=' in SDP" from /var/log/messages.
> > I also find this message at source code of nathelper. So I think it
> > should happen from this module.
> >
> > It seems voice channel can't pass throught it.
> > I make a call from UA_A ( under NAT ) from domainA and using PDT to
> > redirect to UA_B via domainB. UA_B has ring and it can answer. I can
> > hear the UA_A's sound from UA_B. The sound of UA_B is failed to UA_A.
> >
> > UA_A(NAT) ==> domainA(PDT) ==> domainB(nathelper+rptproxy) ==> UA_B(NAT)
> > SOUND_A ==========================================> UA_B
> > UA_A <===== XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX === SOUND_B
> >
> > Do I put the prefix2domain() in a wrong place?? Or Is it a bug ofi
> > nathelper & rtpproxy?
> >
> > And my ser.cfg as below:
> >
> > Best Regard.
> > Charles
> >
> > #
> > # $Id: ser.cfg,v 1.25 2004/11/30 16:28:24 andrei Exp $
> > #
> > # simple quick-start config script
> > #
> >
> > # ----------- global configuration parameters ------------------------
> >
> > debug=8 # 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
> > */
> >
> > listen=xxx.xxx.xxx.xxx
> >
> > alias=ser.xxx.net
> > alias=ser
> > alias=xxx.xxx.xxx.xxx
> >
> > check_via=no # (cmd. line: -v)
> > dns=no # (cmd. line: -r)
> > rev_dns=no # (cmd. line: -R)
> > port=5060
> > children=4
> > fifo_mode=0666
> > fifo="/tmp/ser_fifo"
> > fifo_db_url="mysql://ser:heslo@localhost/ser"
> >
> > # ------------------ 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"
> >
> > loadmodule "/usr/local/lib/ser/modules/exec.so"
> > loadmodule "/usr/local/lib/ser/modules/avpops.so"
> > loadmodule "/usr/local/lib/ser/modules/domain.so"
> > loadmodule "/usr/local/lib/ser/modules/group.so"
> > loadmodule "/usr/local/lib/ser/modules/uri.so"
> > loadmodule "/usr/local/lib/ser/modules/uri_db.so"
> > loadmodule "/usr/local/lib/ser/modules/permissions.so"
> > loadmodule "/usr/local/lib/ser/modules/speeddial.so"
> > loadmodule "/usr/local/lib/ser/modules/acc.so"
> > loadmodule "/usr/local/lib/ser/modules/pdt.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)
> > modparam("usrloc", "db_mode", 1)
> >
> > # -- 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 params --
> > 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
> >
> > # -- db_url params --
> > modparam("acc|auth_db|domain|group|permissions|speeddial|uri_db|usrloc|pdt",
> > "db_url", "mysql://ser:heslo@localhost/ser")
> >
> > # -- use_domain params --
> > modparam("auth_db|group|registrar|speeddial|uri_db|usrloc", "use_domain", 0)
> >
> > # -- permissions params --
> > modparam("permissions", "db_mode", 1)
> > modparam("permissions", "trusted_table", "trusted")
> >
> > # -- accounting params --
> > modparam("acc", "db_flag", 1)
> > modparam("acc", "db_missed_flag", 1)
> > modparam("acc", "log_fmt", "cdfimorstup")
> > modparam("acc", "log_level", 1)
> > modparam("acc", "failed_transactions", 1)
> > modparam("acc", "report_cancels", 1)
> > modparam("acc", "report_ack", 0)
> >
> > # -- domain params --
> > modparam("domain", "db_mode", 1)
> >
> > # -- avp params --
> > modparam("avpops", "avp_url", "mysql://ser:heslo@localhost/ser")
> > modparam("avpops", "avp_table", "usr_preferences")
> > #modparam("avpops", "use_domain", "1")
> > modparam("avpops", "uuid_column", "uuid")
> > modparam("avpops", "username_column", "username")
> > modparam("avpops", "domain_column", "domain")
> > modparam("avpops", "attribute_column", "attribute")
> > modparam("avpops", "value_column", "value")
> > modparam("avpops", "type_column", "type")
> > modparam("avpops", "avp_aliases",
> > "voicemail=i:500;calltype=i:700;fwd_no_answer_type=i:701;fwd_busy_type=i:702")
> > # To use more than one tables example
> > #modparam("avpops", "db_scheme",
> > "scheme1:table=subscriber;uuid_column=uuid;value_column=first_name")
> >
> > # -- tm params --
> > modparam("tm", "fr_timer", 15)
> > modparam("tm", "fr_inv_timer", 22)
> > modparam("tm", "wt_timer", 5)
> > modparam("tm", "fr_inv_timer_avp", "inv_timeout")
> >
> > # -- pft params --
> > modparam("pdt", "db_table", "prefix_domain")
> > modparam("pdt", "prefix", "")
> > #modparam("pdt", "start_range", 2000)
> > #modparam("pdt", "terminator", 0)
> > modparam("pdt", "hsize_2pow", 2)
> > modparam("pdt", "sync_time", 300)
> > modparam("pdt", "clean_time", 600)
> >
> > # ------------------------- 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 (method=="INVITE" || method=="BYE") {
> > setflag(1);
> > };
> >
> > # !! 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 (method == "REGISTER" || ! search("^Record-Route:")) {
> > log("SER: 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".
> >
> > 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
> > };
> > };
> >
> > # 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 (!method=="REGISTER") record_route();
> >
> > # 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);
> > break;
> > };
> >
> > prefix2domain();
> >
> > if (!uri==myself) {
> > # mark routing logic in request
> > append_hf("P-hint: outbound\r\n");
> > route(1);
> > break;
> > };
> >
> > # 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 (method=="REGISTER") {
> >
> > # Uncomment this if you want to use digest authentication
> > if (!www_authorize("ser.xxx.net", "subscriber")) {
> > www_challenge("ser.xxx.net", "0");
> > break;
> > };
> >
> > 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 client or server know to be behind a NAT, enable relay
> > if (isflagset(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();
> > };
> > }
> >
> > On Thu, 17 Feb 2005 12:49:10 +0100, Marian Dumitru
> > <marian.dumitru at voice-sistem.ro> wrote:
> > > Hi Charles,
> > >
> > > You have to use interdomain prefixes. Set on domainA a prefix for
> > > recognizing dialed numbers in domainB.
> > > The logic is like:
> > > PrefixToB+numberInB at domainA -> numberinB at domainB
> > >
> > > you can do this directly from script or by using PDT module.
> > >
> > > Best regards,
> > > Marian
> >
> > _______________________________________________
> > Serusers mailing list
> > serusers at lists.iptel.org
> > http://lists.iptel.org/mailman/listinfo/serusers
> >
>
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