[jcifs] name resolving

[Alexander Buloichik]

Hi !

This is patch for apply rule #1.
I don't create new property. Instead it, I'm trying to calculate difference between baddr and address.
If difference > 0 and less then other difference, then we use this address.
When baddr is 255.255.255.255, then we use first address.

On 8 September 2004 21:31, Michael B Allen wrote:
> On Wed, 8 Sep 2004 13:34:32 +0300
> Alexander Buloichik <Alexander_Buloichik at epam.com> wrote:
> 
> > Hi !
> > 
> > >
> > > It sounds like (just restating for clarification and verification)
> > > that a multihomed client is registering two IP addresses in WINS under
> > > the same name (10.6.2.70 and 147.204.20.105).  jCIFS always selects
> > > "147.204.20.105", whereas Win2k clients always select "10.6.2.70".
> > > The issue (I guess) is that 147.204.20.105 cannot be reached from the
> > > client, causing jCIFS to be unable to connect.  Is this a correct
> > > assessment Alex?
> > >
> > 
> > Right.
> > 
> > I investigated this problem.
> > 
> > In the NameServicePacket.readResourceRecordWireFormat :
> >         end = srcIndex + rDataLength;
> >         for( int i = 0; srcIndex < end; i++ ) {
> >             srcIndex += readRDataWireFormat( src, srcIndex );
> >             if( i == addrIndex ) {
> >                 addrIndex++;
> >                 if( addrIndex == LOOKUP_RESP_LIMIT ) {
> >                     addrIndex = 0;
> >                 }
> >                 return end - start;
> >             }
> >         }
> >         addrIndex = 0;
> > 
> > It returns any address in new position without ckecking network. So,
> > first, second, etc.
> > I think, we should try to return address by rule #1.
> > We need to find address for our network, and for that we need to have
> > local IP(laddr) and netmask. I think, it not possible to find address only
> > by baddr correctly.
> >  But we can calculate baddr by local IP and netmask. Seems to we need to
> >  add 
> > netmask property instead baddr.
> >  We can calculate which address more equal for baddr, and use this
> >  address, 
> > but it is not a right way.
> 
> Also, note that the hashCode() of an InetAddress is the integer value of the
> IP. You can then use bitwise operators with those hashCode() values as
> operands to test for rule #1.
> 
> Mike
> 
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