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

6 Jun 2005


      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=80.32.90.5..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=80.32.90.5 req_src_port=62303 
in_uri=sip:192.168.1.5organization.org out_uri=sip:192.
  168.1.5organization.org 
via_cnt==1"....