dns and minisip

Philippe Torrelli philippe.torrelli at alcatel-lucent.fr
Mon Jan 29 19:34:12 CET 2007


Hello,

Now that minisip sends SRV queries to the dns to get the ports for tcp, tls,
and udp, I couldn't find a way to configure minisip so that it doesn't query
the dns:

I set the proxy_addr to the fqdn of my proxy, proxy_port , and proxy
transport to what I want and <auto_detect_proxy>  to no, 
register, and invite another host ... 

The other host sends 200 Ok to minisip, and before minisip ACK's the 200 OK
it issues a srv request to the dns - see the attached trace, where it
queries the DNS for _sip._udp.192.168.92.1 ( where  192.168.92.1 is the ip
of my proxy ).

Shouldn't minisip just use the proxy port I set, as previously ? 

It doesn't matter very much when the dns is fast to answer the dns query (
as in this trace for example ), but if it takes time to answer ( or doesn't
answer at all ), minisip gets flooded with '200 Ok' requests  from the
proxy, doesn't react when the other peer hangs the call ... 


Thanks in advance

Philippe Torrelli

----
In the trace ( made with minisip r3149 downloaded from the autobuild
directory ) : 
192.168.92.147 is the PC with minisip
192.168.92.1 is an openser proxy ( domain sbcsipsophia.dyndns.org, that can
be resolved into the address A 192.168.92.1 )
It is also the dns for 192.168.92.147

In the configuration file, 
Proxy_addr is sbcsipsophia.dyndns.org, proxy_port is 5060, auto_detect_proxy
is 'no'  , transport is udp, and sip uri is sip:810 at sbcsipsophia.dyndns.org 

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