Re: [Serusers] Can I use realm name without DNS SRV - sr-users

7 Jun 2005

      SER will try to resolve using DNS SRV and A lookups unless you specify IP 
addresses, so:
route[2]
{
      #Host and port where Asterisk is listening, sip.conf
       rewritehostport("192.168.1.5:5070");
       route(1);
       break;
}
g-)
Antonio Cano damas wrote:
...
Hi,
That seems to start working :). I've made the next changes:
listen="redstar.organization.org"
alias="192.168.1.5"
alias="organization.org"
alias="redstar.organization.org"
check_via=no    # (cmd. line: -v)
dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
And the proper updates into MySQL Database for domain like
'redstar.organization.org'.
Now I've got happening something strange, my UAs x-lite and
grandstream can register but Asterisk doesn't (at first look).
Looking the URIS I've seen that X-lite generate
@192.168.1.5redstar.organization.org while Asterisk generate
@redstar.organization.org. Finally I've got registering the Asterisk
using fromdomain= 192.168.1.5restar.organization.org :-/
My next step is try to make a call from X-Lite to one extension of
Asterisk. In the SER.cfg:
A) Into the INVITE process section:
   if (uri =~ "^sip:(2[0-9][0-9])@*" ) {
                 log(1,"Al asterisk\n");
                 route(2);
                 break;
   };
B)
route[2]
{
     #Host and port where Asterisk is listening, sip.conf
      rewritehostport("192.168.1.5redstar.organization.org:5070");
      route(1);
      break;
}
route[1]
{
       # if client or server know to be behind a NAT, enable relay
       if (isflagset(6)) {
               #log(1, "Pasando por force_rtp_proxy\n");
               append_hf("P-Hint: Pasando por RTP_PROXY\r\n");
               force_rtp_proxy();
       };
   # labeled all transaction for accounting
   #setflag(4);

   # send it out now; use stateful forwarding as it works reliably
   # even for UDP2TCP
   if (!t_relay()) {
           sl_reply_error();
   };

}
With that the INVITE petition gets an Request Timeout response,
making a little of ngrep:
U IP_Client_UA:5060 -> 192.168.1.5:5060
 INVITE sip:213@192.168.1.5redstar.organization.org SIP/2.0..Via:
SIP/2.0/UDP
192.168.0.6:5060;rport;branch=z9hG4bK4F9444CAD6AD11D9B421000A95A55E26..From:
Anto
 nio F. Cano sip:10101@redstar.organization.org;tag=1817289323..To:
sip:213@redstar.organization.org..Contact:
sip:10101@192.168.0.6:5060..Call-ID: 4F13C7CB-D
 6AD-11D9-B421-000A95A55E26@192.168.0.6..CSeq: 3733
INVITE..Max-Forwards: 70..Content-Type: application/sdp..User-Agent:
X-Lite release 1103m..Content-Len
 gth: 263....v=0..o=10101 5457996 5458244 IN IP4
192.168.0.6..s=X-Lite..c=IN IP4 192.168.0.6..t=0 0..m=audio 8000
RTP/AVP 3 0 8 98 101..a=rtpmap:0 pcmu/80
 00..a=rtpmap:8 pcma/8000..a=rtpmap:3 gsm/8000..a=rtpmap:98
iLBC/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101
0-15..
#
U 192.168.1.5:5060 -> IP_DNS_SERVER:5070
 INVITE sip:213@192.168.1.5redstar.organization.org:5070
SIP/2.0..Record-Route:
sip:213@192.168.1.5;ftag=1817289323;lr=on..Via: SIP/2.0/UDP
 192.168.1.5;branc h=z9hG4bK151f.afc77ca4.0..Via: SIP/2.0/UDP
192.168.0.6:5060;received=IP_Client_UA;rport=5060;branch=z9hG4bK4F9444CAD6AD11D9B421000A95A55E26..From:
Antonio
 F. Cano sip:10101@redstar.organization.org;tag=1817289323..To:
sip:213@redstar.organization.org..Contact:
sip:10101@IP_Client_UA:5060..Call-ID: 4F13C7CB-D6AD-1
 1D9-B421-000A95A55E26@192.168.0.6..CSeq: 3733 INVITE..Max-Forwards:
69..Content-Type: application/sdp..User-Agent: X-Lite release
1103m..Content-Length:
 283..P-Hint: Nat uac_test=3 ..P-Hint: Metodo INVITE corrigiendo
SDP..P-Hint: Pasando por RTP_PROXY....v=0..o=10101 5457996 5458244 IN
IP4 192.168.0.6..s=
 X-Lite..c=IN IP4 192.168.0.6..t=0 0..m=audio 8000 RTP/AVP 3 0 8 98
101..a=rtpmap:0 pcmu/8000..a=rtpmap:8 pcma/8000..a=rtpmap:3
gsm/8000..a=rtpmap:98 iLBC
 /8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101
0-15..a=direction:active..
Why SER sends the message to IP_DNS_SERVER in place of
192.168.1.5redstar.organization.org?
What's happen here? I don't understand nothing. What I make wrong? The
@192.168.1.5redstar.organization.org doesn't seem to be so elegant is
there any way to make it like redstar.organization.org
Kind regards and thanks for your time,
   Antonio F. Cano
Greger V. Teigre wrote:
...
You can turn off SRV in X-Lite and Grandstream (Use DNS SRV option)
And use SIP proxy: fully qualified domain name (same as outbound)
g-)
Antonio Cano damas wrote:
...
Hello all,
First of all excuses for my bad english. I was looking into the list
and doesn't find nothing similar to my problem maybe I didn't use
the correct keywords.
I've got a Proxy that is behaind and Public IP and I've got a
subdomain name pointing to this machine. But the DNS server isn't
mine and I can't add a SRV record, I've redirected all petitions to
this server and in that way if I make a petition of anykind service
(ssh, web, ...)  to the subdomain.name.com  it comes into the
machine. The problem is that all de UA i try (X-Lite, Grandstream and
Asterisk) makes DNS SRV queries and i don't know how to avoid this.
For example:
My subdomain is redstar.organization.org and I'd like to use the
realm organization.org

File /etc/hosts
 192.168.1.5     Public_IP_Of_RedStar   redstar.organization.org

redstar

In /etc/init.d/ser I've got this params line:
     PARAMS="-P $PIDFILE -u root -g root -l
         redstar.organization.org" --->I try using -l
              organization.org, but the server said to me: 0(0)

ERROR: udp_init: bind(5, 0x80c8cc0, 16) on IP_Organization.org:
Cannot assign requested address

In /etc/ser/ser.cfg added this:
 alias="organization.org"
 alias="redstar.organization.org"

MySQL tables the domain field value is 'organization.org'

When I start the SER it tells me:
   Restarting ser: serListening on
             Public_IP_Of_Redstar [192.168.1.5]:5060
   Aliases: redstar:5060 redstar.organization.org:*
organization.org:* The UA Grandstream config is:
   SIP Server: organization.org
   Outbound Proxy: redstar.organization.org
And the received answer is a 478 Unresolveable destination. Can
anyone help me? What can I do? I'm a little desesperated :(
Thanks in advance,
   Antonio F. Cano
Ngrep log result into redstar.organization.org machine:
U UA_Public_IP:62303 -> 192.168.1.5:5060
 REGISTER sip:192.168.1.5organization.org SIP/2.0..Via: SIP/2.0/UDP
192.168.0.9:62303;branch=z9hG4bK083fbe
 2c60e48e32..From: "Antonio F. Cano (iGT)"
sip:10101@organization.org;user=phone;tag=b511698681c5146b..T
 o: sip:10101@organization.org;user=phone..Contact:
sip:10101@192.168.0.9:62303;user=phone..Call-ID: 3
 4ee28e5dad286d9@192.168.0.9..CSeq: 100 REGISTER..Expires:
3600..User-Agent: Grandstream HT487 1.0.5.
 18..Max-Forwards: 70..Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Leng
 th:
0....
#
Why this 'sip:192.168.1.5organization.org'?
U 192.168.1.5:32863 -> 195.235.113.3:53
Z............_sip._udp.192.168.1.5organization.org..!..
######################################################################
U UA_Public_IP:62303 -> 192.168.1.5:5060
 REGISTER sip:192.168.1.5organization.org SIP/2.0..Via: SIP/2.0/UDP
192.168.0.9:62303;branch=z9hG4bK083fbe
 2c60e48e32..From: "Antonio F. Cano (iGT)"
sip:10101@organization.org;user=phone;tag=b511698681c5146b..T
 o: sip:10101@organization.org;user=phone..Contact:
sip:10101@192.168.0.9:62303;user=phone..Call-ID: 3
 4ee28e5dad286d9@192.168.0.9..CSeq: 100 REGISTER..Expires:
3600..User-Agent: Grandstream HT487 1.0.5.
 18..Max-Forwards: 70..Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Leng
 th:
0....
#########################################################
U 195.235.113.3:53 -> 192.168.1.5:32863
Z............_sip._udp.192.168.1.5organization.org..!...)......*0.=.a.gtld-servers.).nstld.verisign-grs.c
om.B..@..........:.....
#
U 192.168.1.5:32863 -> 195.235.113.3:53
Z............_sip._udp.192.168.1.5organization.org..!..
##########
U 195.235.113.3:53 -> 192.168.1.5:32863
Z............_sip._udp.192.168.1.5organization.org..!...)......*0.=.a.gtld-servers.).nstld.verisign-grs.c
om.B..@..........:.....
##################################################################################################################
U UA_Public_IP:62303 -> 192.168.1.5:5060
 REGISTER sip:192.168.1.5organization.org SIP/2.0..Via: SIP/2.0/UDP
192.168.0.9:62303;branch=z9hG4bK083fbe
 2c60e48e32..From: "Antonio F. Cano (iGT)"
sip:10101@organization.org;user=phone;tag=b511698681c5146b..T
 o: sip:10101@organization.org;user=phone..Contact:
sip:10101@192.168.0.9:62303;user=phone..Call-ID: 3
 4ee28e5dad286d9@192.168.0.9..CSeq: 100 REGISTER..Expires:
3600..User-Agent: Grandstream HT487 1.0.5.
 18..Max-Forwards: 70..Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Leng
 th:
0....
###########################################################################################################################
U 192.168.1.5:5060 -> UA_Public_IP:62303
 SIP/2.0 478 Unresolveable destination (478/TM)..Via: SIP/2.0/UDP
192.168.0.9:62303;branch=z9hG4bK083
 fbe2c60e48e32;rport=62303;received=IP_Client_UA..From: "Antonio F.
Cano (iGT)" <sip:10101@organization.org;
 user=phone>;tag=b511698681c5146b..To:
sip:10101@organization.org;user=phone;tag=1b908f8c725dfd3e50cbc74
 f548dfb0d-588b..Call-ID: 34ee28e5dad286d9@192.168.0.9..CSeq: 100
REGISTER..Server: Sip EXpress route
 r (0.8.14 (i386/linux))..Content-Length: 0..Warning: 392
80.38.244.122:5060 "Noisy feedback tells:
 pid=8023 req_src_ip=IP_Client_UA req_src_port=62303
in_uri=sip:192.168.1.5organization.org out_uri=sip:192.
 168.1.5organization.org
via_cnt==1"....

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