From: Hugh Sasse Staff Elec Eng <hgs@...>
Date: 2003-03-11T04:00:08+09:00
Subject: Re: DRb: remote methods not running remotely???

On Tue, 11 Mar 2003, Hugh Sasse Staff Elec Eng wrote:

> On Tue, 11 Mar 2003, Eric Hodel wrote:
>
> > Hugh Sasse Staff Elec Eng (hgs@dmu.ac.uk) wrote:
> >
> > > How can I test an object in a server to see if it is remote or local?
> > >
> > > Will certain kinds of objects always end up as local after being
> > > sent to a server  -- if for example they contain references to IO
> > > objects which cannot be marshalled, or maybe references to the
> > > sever?
> > >
> > > The thing is, I'm fairly sure the simplified version of this code
> > > worked when it doe no I/O or serious work.
> >
> > IIRC any object you return that does not include DRbUndumped will
> > be marshalled and returned to the client side.
>
> OK, I have not mixed that into the client class myself....
> If I do client.kind_of?(DRbUndumped) I get "false", which is what
> I'd expect.  So the client methods should run on the client then?
>
>
Well, I've done further tests on this, and while I still can't get
it to run the code on the right machine, I now know that:
All the instance vars of the client give false in response to
.kind_of(DRbUndumped);
That when the client is marshalled (a) it happens successfully and
(b) I get something like:
marshalling...
"\004\006o:\016TlmClient\t:\f@configo:\024TlmClientConfig\v:\v@table{\t\"\vidfile\"\020@ident_file\"\010tmp\"\n@temp\"\010uri\"\016@uri_page\"\niddir\"\017@ident_dir:\016@uri_page\"?http://<URL-ELIDED-FOR-NOW>/URIs.txt:\017@ident_dir\"\rPTlmUIds:\020@ident_file\"\020PTlmIds.txt:\n@temp\"\t/tmp:\017@conf_file\"\rTlm.conf:\023@remote_serveru:\023DRb::DRbObject
\004\006[\a\"\031druby://neelix:464390:\v@ident\"\fsasse01:\016@skillseto:\rSkillset\006;\021c\016TlmClient"
...marshalled

from
    $stderr.puts "marshalling..."
    $stderr.puts data.inspect
    $stderr.puts "...marshalled"
So that looks fairly sensible (except that the <URL-ELIDED-FOR-NOW>
has the correct value, which I'm not publishing yet.

        Hugh