[Serusers] Re: Enabling calls to US-based 8xx numbers
Nikola Stojanoski
nikola at intrafon.com
Tue Mar 2 12:19:39 CET 2004
Hi,
Yes, i'm using ethereal that's why i'm sure that BYE is not reaching the
SER and DeltaThree's servers.
Can the problem be that the SER is located behind NAT i don't have a
option to try it on a public IP. X-Lite is registered as user at 192.168.0.1
on SER but it's user@<public IP> on delta servers. At the moment i can't
forward my public IP to accept SIP requests to 192.168.0.2 so in my X-Lite
configuration i'm using 192.168.0.2 as sip proxy.
If you think that it could be a problem let me know so i can try to find
out a way to start SER on a public IP.
Regards,
Nikola
> how do you know that there is no BYE? Do you capture the network traffic
> on the proxy and on the client side? Use ethereal to verify if there are
> differences to the BYE and CANCEL messages.
>
> klaus
>
> Nikola Stojanoski wrote:
>> HI Klaus,
>>
>> i'm testing SER to redirect the calls started with 00 to
>> natrelay.deltathree.com because my sip server is behind NAT, the
>> scenario
>> is like this:
>>
>> X-Lite --> SER --> DeltaThree --> etc ....
>> |_________|
>> NAT
>>
>> X-Lite has 192.168.0.1
>> SER 192.168.0.2
>>
>> and as i've told you i can send a call CANCEL it but i can't send BYE to
>> stop a call that is already in progress
>>
>> Here is my config.
>>
>> -------------------------------------------------------
>> debug=1 # i had this at "3" initially"
>> 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
>> #
>> listen=192.168.0.2
>>
>> #
>> # Aliases
>> #
>> alias=igor.intranet.com.mk
>> alias=192.168.0.2
>>
>> # ------------------ 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"
>>
>> # We want to earn money, therefore we need accounting
>> loadmodule "/usr/local/lib/ser/modules/acc.so"
>>
>> # !! Nathelper
>> loadmodule "/usr/local/lib/ser/modules/nathelper.so"
>>
>> # ----------------- setting module-specific parameters ---------------
>>
>> # -- usrloc params --
>> modparam("usrloc", "db_mode", 2)
>> modparam("usrloc", "db_url", "mysql://ser:heslo@localhost/ser")
>>
>> #
>> # Accounting Setup
>> #
>> #modparam("acc", "db_url", "sql://ser:heslo@localhost/ser")
>> modparam("acc", "log_level", 1)
>> modparam("acc", "log_flag", 1)
>>
>> # Account failed transactions
>> modparam("acc", "failed_transactions", 1)
>>
>> # Which data should be accounted?
>> #
>> # c = Call-Id
>> # d = To tag (Dst)
>> # f = From
>> # i = Inbound Request-URI
>> # m = Method
>> # o = Outbound Request-URI
>> # r = fRom
>> # s = Status
>> # t = To
>> # u = digest Username
>> # p = username Part of inbound Request-URI
>> #
>> # default is "miocfs"
>> #
>> modparam("acc", "log_fmt", "miocfst")
>>
>> # -- 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", "db_url", "mysql://ser:heslo@localhost/ser")
>> 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{
>> # Accounting TEST
>> # How does this work anyway? And why 1+2?
>> setflag(1);
>> setflag(2);
>>
>> # 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;
>> };
>>
>> # !! 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("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".
>> 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;
>> };
>>
>> 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") {
>>
>> # SQL Digest Auth
>> if (!www_authorize("", "subscriber")) {
>> www_challenge("", "1");
>> break;
>> };
>>
>> save("location");
>> break;
>> };
>> lookup("aliases");
>> if (!uri==myself) {
>> append_hf("P-hint: outbound alias\r\n");
>> route(1);
>> break;
>> };
>>
>> # Destination DeltaThree
>> if( uri=~"^sip:00[0-9]*@.*")
>> {
>> 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=~"^sip:(.+@)?(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");
>>
>> # Route to PSTN Gateways(s)
>> if (uri=~"^sip:00[0-9]*@.*") { ## This assumes that the
>> caller is
>> log("Forwarding to DeltaThree\n");
>> strip(2);
>> rewritehostport("natrelay.deltathree.com:5060");
>> t_relay();
>> break;
>> };
>>
>>
>> # Local Domain User
>> # 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 (isflagset(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();
>> };
>> }
>>
>>
>> Regards,
>> Nikola
>>
>>
>>>Hi Nikola!
>>>
>>>Without message dumps its impossible for us to solve your problems!
>>>
>>>regards,
>>>Klaus
>>>
>>>Nikola Stojanoski wrote:
>>>
>>>>I'm trying to setup SER to route my outgoing calls to DeltaThree's
>>>>servers. So far i'v managed to forward the calls but my problem is that
>>>>if
>>>>a call starts somehow i can't record route the call and my UA is not
>>>>sending BYE to the servers, so i'm getting billed more than i talk. For
>>>>call duration of 0:10 i can see 1:45 on deltathree servers.
>>>>
>>>>If you manage to work something out let me know.
>>>>
>>>
>>>
>>
>>
>
>
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