[Users] Route-header DNS lookup?
Simon Morvan
garphy at gmail.com
Mon Jul 31 10:28:32 CEST 2006
did that
2006/7/31, Klaus Darilion <klaus.mailinglists at pernau.at>:
> Hi Simon!
>
> Please make a unified diff (cvs diff -u) and post it at the bugtracker
> on sourceforge:
> http://sourceforge.net/tracker/?group_id=139143&atid=743022
>
> This way it can't get lost under thousands of emails.
>
> regards
> klaus
>
> Simon Morvan wrote:
> > modified file : modules/rr/loose.c
> >
> > 2006/7/28, Simon Morvan <garphy at gmail.com>:
> >> after a quick check, the answer is : no
> >>
> >> this is a quick hack i've made as a workaround. feedback welcome :)
> >>
> >> 781,783c781,803
> >> < if (set_dst_uri(_m, uri) < 0) {
> >> < LOG(L_ERR, "after_loose: Error while setting
> >> dst_uri\n");
> >> < return RR_ERROR;
> >> ---
> >> > if( puri.maddr.s != NULL ){
> >> > str builturistr;
> >> > char builturi[150];
> >> >
> >> > memcpy( builturi, "sip:", 4 );
> >> > memcpy( builturi+4, puri.maddr.s+6,
> >> puri.maddr.len-6 );
> >> > builturi[4+puri.maddr.len-6] ='\0';
> >> >
> >> > LOG( L_ERR, "MaddrURI is %p\n", builturi );
> >> >
> >> > builturistr.s = builturi;
> >> > builturistr.len = 4+puri.maddr.len-6;
> >> >
> >> > if (set_dst_uri(_m, &builturistr) < 0) {
> >> > LOG(L_ERR, "after_loose: Error while
> >> setting dst_uri\n");
> >> > return RR_ERROR;
> >> > }
> >> >
> >> > }else{
> >> > if (set_dst_uri(_m, uri) < 0) {
> >> > LOG(L_ERR, "after_loose: Error while
> >> setting dst_uri\n");
> >> > return RR_ERROR;
> >> > }
> >>
> >>
> >> 2006/7/28, Simon Morvan <garphy at gmail.com>:
> >> > Is this issue solved in Openser 1.1.0 ?
> >> >
> >> > 2006/7/7, Simon Morvan <garphy at gmail.com>:
> >> > > As Daniel said on the ml thread :
> >> > > > it makes sense, we will analyze the implications and include it
> >> on the
> >> > > > to-do list.
> >> > > >
> >> > > > Cheers,
> >> > > > Daniel
> >> > > Has it been included in the developpement branch yet ?
> >> > >
> >> > > --
> >> > > Simon.
> >> > >
> >> > > 2006/7/7, Klaus Darilion <klaus.mailinglists at pernau.at>:
> >> > > > I'm not sure about the maddr parameter. doesn't it mean that the
> >> request
> >> > > > should be forwarded to this IP regardsless of the domain? If
> >> yes, the
> >> > > > DNS lookup can be skipped.
> >> > > >
> >> > > > regards
> >> > > > klaus
> >> > > >
> >> > > > Kerker Staffan wrote:
> >> > > > > hi
> >> > > > > i recently bounced into this problem, and i'm not sure here.
> >> > > > > i'm running the openser-devel, with the cacheless db_mode=3.
> >> (works fine btw)
> >> > > > >
> >> > > > > the record-route header received by the proxy on the other
> >> side (SNOM4S), inserts
> >> > > > > the domain name (iptel1.ipatl.se) and not the hostname
> >> (sip.iptel1.ipatl.se) in the
> >> > > > > record-route header, and uses the maddr=<ip_of_server> with
> >> the actual server IP address.
> >> > > > >
> >> > > > > now, when my client (behind the OpenSER) replies with an ACK
> >> to the incomming OK,
> >> > > > > it uses the Route-header recieved in the RR-header, and sends
> >> the ACK to OpenSER. i
> >> > > > > then get the following errors in OpenSER.
> >> > > > >
> >> > > > > ---
> >> > > > > /usr/local/sbin/openser[3583]: ERROR: mk_proxy: could not
> >> resolve hostname: "iptel1.ipatl.se"
> >> > > > > /usr/local/sbin/openser[3583]: ERROR: uri2proxy: bad host name
> >> in URI
> >> <sip:4ffec4ce755c218a72228c6643cb3b6b at iptel1.ipatl.se:5060;maddr=172.28.248.66;transport=udp;lr>
> >>
> >> > > > > ---
> >> > > > >
> >> > > > > the ACK i sent look like this:
> >> > > > >
> >> > > > > ---
> >> > > > > Request-Line: ACK sip:2307 at iptel1.ipatl.se;gruu=6fg9n6dl SIP/2.0
> >> > > > > Via: SIP/2.0/UDP
> >> 172.28.248.52:2051;branch=z9hG4bK-d96b1fvapkyn;rport
> >> > > > > Route: <sip:172.28.248.10;lr=on;ftag=li9buf1i4p>
> >> > > > > Route:
> >> <sip:4ffec4ce755c218a72228c6643cb3b6b at iptel1.ipatl.se:5060;maddr=
> >> 172.28.248.66;transport=udp;lr>
> >> > > > > From: "Snom 2652" <sip:2652 at ipatl.se>;tag=li9buf1i4p
> >> > > > > To: <sip:2307 at ipatl.se>;tag=hvseiz7kgb
> >> > > > > Call-ID: 3c269d83900b-xj3ild14y880 at snom360
> >> > > > > CSeq: 1 ACK
> >> > > > > Max-Forwards: 70
> >> > > > > Contact: <sip:2652 at 172.28.248.52:2051;line=cp4a7ljd>
> >> > > > > Content-Length: 0
> >> > > > > ---
> >> > > > >
> >> > > > > as far as i understand, according the rfc 3263, the
> >> route-header may contain domain name that
> >> > > > > has to be resolved using SRV.
> >> > > > >
> >> > > > > ---
> >> > > > > "6 Constructing SIP URIs
> >> > > > >
> >> > > > > In many cases, an element needs to construct a SIP URI for
> >> inclusion
> >> > > > > in a Contact header in a REGISTER, or in a Record-Route
> >> header in an
> >> > > > > INVITE. According to RFC 3261 [1], these URIs have to have
> >> the
> >> > > > > property that they resolve to the specific element that
> >> inserted
> >> > > > > them. However, if they are constructed with just an IP
> >> address, for
> >> > > > > example:
> >> > > > >
> >> > > > > sip:1.2.3.4
> >> > > > >
> >> > > > > then should the element fail, there is no way to route the
> >> request or
> >> > > > > response through a backup.
> >> > > > >
> >> > > > > SRV provides a way to fix this. Instead of using an IP
> >> address, a
> >> > > > > domain name that resolves to an SRV record can be used:
> >> > > > >
> >> > > > > sip:server23.provider.com"
> >> > > > > ---
> >> > > > >
> >> > > > > now, OpenSER only asks DNS for an A record of the name
> >> recieved in the route header,
> >> > > > > and since that's a domain name, it's unresolvable, and so the
> >> ACK is never sent.
> >> > > > >
> >> > > > > any hints or clues?
> >> > > > >
> >> > > > > best regards,
> >> > > > > /Staffan Kerker
> >> > > > >
> >> > > > >
> >> > > > > --
> >> > > > > Staffan Kerker
> >> > > > > Saab Communications, Växjö
> >> > > > > p. +46 470 42185
> >> > > > > c. +46 705 391365
> >> > > > > m. staffan.kerker at saabgroup.com
> >> > > > >
> >> > > > >
> >> > > > > _______________________________________________
> >> > > > > Users mailing list
> >> > > > > Users at openser.org
> >> > > > > http://openser.org/cgi-bin/mailman/listinfo/users
> >> > > >
> >> > > >
> >> > > > _______________________________________________
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> >> > > > Users at openser.org
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> >> > > >
> >> > >
> >> >
> >>
>
>
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