Re: [Vrs-development] Cluster image security/privacy question

[Chris Smith]

On Thursday 02 May 2002 13:44, Bill Lance wrote:
> --- Chris Smith <address@hidden> wrote:
> > Each domain (ie an LDS node) is namespaced (like the
> > ID you talk about, but
> > assigned by the owner of the LDS to be something
> > unique such as
> > 'BillsLDS.somewhere.bill.has.his.machine.com'),
>
> A lot of the potential machines in a VRS would not
> have a domain name, at least not one discoverable with
> an external DNS.  Also, it would require an extra DNS
> lookup traffic for every transation


Ah, you've missread that.  Its not a domain name that is used as the 
namespace, but an arbitary . seperated (if you like) string.  The only 
requirement is that the  namespace is unique so people often do use their 
domain name for this purpose, but that's the only reason.

When an LDS joins the VRS it tells the VRS what it's IP address is and what 
it's namespace qualifier is.  These are then stored by Goldwater's Domain 
handler so that whenever a namespace is referenced, the IP address can be 
found (this isn't exactly how Goldwater does it internally. It never needs to 
lookup the IP address if the LDS it's trying to route messages to is already 
connected and has an open TCP/IP channel - but the description will surfice).

Chris

-- 
Chris Smith
  Technical Architect - netFluid Technology Limited.
  "Internet Technologies, Distributed Systems and Tuxedo Consultancy"
  E: address@hidden  W: http://www.nfluid.co.uk