Magnus,
On Tue, Mar 29, 2005 at 06:18:39PM +0200, Magnus Bergman wrote:
> * Could an IOR be made smaller?
> * Are there any other to express the same data? I've heard about
> something called corbaloc, are those strings analogous to IORs?
1. I am a newbie with CORBA and Orbit. There is an ORBit2 command
line option that triggers the generation of the shortened
"corbaloc" URL instead of IORs:
orbit-name-server-2 -ORBIIOPIPv4=1 -ORBIIOPIPSock=2809 \
-ORBIIOPUNIX=0 -ORBCorbaloc=1
The last option makes orb.object_to_string() generate strings
in the "corbaloc" format, such as the one below.
corbaloc:iiop:[EMAIL
PROTECTED]:2089/%00%00%00%00%f8%97%8a%b2%eb%da%83%74%10%e1%29%59%63%66%ec%02%01%00%00%00%be%06%74%90
2. I've just applied the patch by Alejandro García Castro that
allows to refer to the ORBit2 implementation of the naming
service by a shortcut name ("key") such as NameService:
http://mail.gnome.org/archives/orbit-list/2004-November/msg00015.html
The patch allowed to use the otherwise unimplemented --key
option of orbit-name-server-2:
orbit-name-server-2 -ORBIIOPIPv4=1 -ORBIIOPIPSock=2809 \
-ORBIIOPUNIX=0 -ORBCorbaloc=1 \
--key=NameService
3. As for the discovery, I used the OpenSLP library and daemon to
register the name service's host name and port number under an
artificial service name such as "service:corbans.COMPANYNAME";.
I understand my solution is more complicated because it
involves 2 name servers (slpd and orbit-name-server-2).
(I disabled the 6 second Directory Agent discovery in the
OpenSLP library against the authors' recommendations).
Perhaps, one could reuse OpenSLP's service attributes to store
full IORs. This would circumvent the standard CosNaming
service altogether.
I haven't tried mdns, but I will be interested hearing from
others about it.
4. BTW, I had troubles using the Java IDL's
orb.resolve_initial_references("NameService")
The function would only send Locate queries as my ethereal GIOP
traces show. These queries would receive negative replies from
orbit-name-server-2. I ended up connecting to the name server
with a regular orb.string_to_object() mechanism, thanks to the
short corbaloc URL made possible by the Alejandro's patch.
> Another question is how this is supposed to function. Should every user
> always get their own name service (name space)? Should there be a system
> one also? Is the separation only of security reasons?
...
Regards,
--
Ilguiz Latypov
programmer at DiskStream
Waterloo, Ontario, Canada
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