Aren't guaranteed to be delivered to the other side.
Mike
> -----Original Message-----
> From: Derek Atkins [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, October 31, 2000 1:56 PM
> To: Perik, Mike
> Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: Trial Balloon: A new DataStore Architecture?
>
> Aren't guaranteed to be one-way, or aren't guaranteed to make
> it to the other side?
>
> -derek
>
> <[EMAIL PROTECTED]> writes:
>
> > CORBA oneway calls are not guaranteed.
> >
> > Mike
> >
> > > -----Original Message-----
> > > From: Jonathan Blandford [SMTP:[EMAIL PROTECTED]]
> > > Sent: Tuesday, October 31, 2000 2:28 PM
> > > To: Derek Atkins
> > > Cc: Rob Browning; [EMAIL PROTECTED]
> > > Subject: Re: Trial Balloon: A new DataStore Architecture?
> > >
> > >
> > > <delurk>
> > >
> > > Hi Derek,
> > >
> > > While I'm hardly a CORBA expert, I'd like to reply to some of these
> > > comments.
> > >
> > > Derek Atkins <[EMAIL PROTECTED]> writes:
> > >
> > > > Rob Browning <[EMAIL PROTECTED]> writes:
> > > >
> > > > > On the data communication side, there's also CORBA to consider.
> > > >
> > > > I personally dislike CORBA. My reasoning is two-fold:
> > > >
> > > > 1) Synchronous RPC is BAD (in many cases).
> > > >
> > > > 2) CORBA tries to push protocol design onto programmers..
> But
> > > > good programmers are not necessarily good protocol
> > > > designers (and vice-versa).
> > > >
> > > > A real-world example of this: M$ Outlook requires 84 RPC calls to
> open
> > > > a mail folder. If your mail server is a few hundred miles away, it
> > > > can take, literally, several SECONDS in order to open it. Why? The
> > > > program has to pause and wait for each RPC to finish before it can
> > > > make the next request, and the transmission delay time can be
> > > > relatively large in a widely-distributed network.
> > >
> > > 84 RPC calls? That's pretty heavy, regardless of the protocol or
> > > mechanism. But that aside, CORBA has the oneway directive that lets
> you
> > > send asynchronous requests.
> > >
> > > > A real protcol would let you send multiple requests consecutively
> and
> > > > let the responses come asynchronously. Unfortunately CORBA does not
> > > > let you do this.
> > >
> > > Yes it can. You can send multiple oneway requests, and let the remote
> > > object send oneway replies back.
> > >
> > > > Another potential problem is the security of CORBA.. Namely, there
> is
> > > > none.:) I would personally insist on data encryption and strong
> > > > (kerberos-level or greater) user authentication.
> > >
> > > I'd argue that writing my own protocol is less secure, as there's more
> > > complexity in the code, more room for error, it's one more dependency
> on
> > > the system etc. etc. At least with ORBit, there are a number of other
> > > people using it. Additionally, ORBit 2.0 has support for SSL built
> in.
> > > Authentication is a separate kettle of fish, and needs addressing
> > > independent of the protocol used.
> > >
> > > > Frankly, I don't think that designing a real protocol would be
> > > > difficult. I also don't think it needs to happen right away. I
> think
> > > > we can architect and implement the data model using local storage
> > > > before designing the network protocol. At least a set of access
> > > > requirements should come first.
> > >
> > > Thanks,
> > > -Jonathan
> > >
> > > </delurk>
> > >
> > > _______________________________________________
> > > gnucash-devel mailing list
> > > [EMAIL PROTECTED]
> > > http://www.gnumatic.com/cgi-bin/mailman/listinfo/gnucash-devel
>
> --
> Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
> Member, MIT Student Information Processing Board (SIPB)
> URL: http://web.mit.edu/warlord/ PP-ASEL N1NWH
> [EMAIL PROTECTED] PGP key available
>
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