Ability of the protocol to go through firewalls is certainly an issue
and basically rules out RMI and sockets.
CORBA is a very versatile option for communication between
for communication between applets and java server components,
however, it is only supported on Netscape or on other browsers
with the Sun Java plug-in or with additional jar downloads.
Using http tunnelling to communicate between applets and servlets
more or less works on any browser that supports Java. Therefore,
it is what we use.
Alex Amies
----- Original Message -----
From: Craig R. McClanahan <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, December 20, 1999 6:32 PM
Subject: Re: Question about servlets and corba et al...
> Gary Montgomery wrote:
>
> > I know that servelets can use corba, rmi, sockets etc. to communicate
with
> > back end processes but what about having clients on the front end
> > communicate with the
> > servlet via corba, rmi etc... ? Or must it be http.
> >
>
> Of course any protocol is possible in the general case (I've even accessed
> databases remotely with a standard JDBC driver, just to prove it could be
> done), but you need to be thinking about a couple of issues:
>
> * Am I going to be crossing firewalls at either the
> client end or the server end? You're going to run
> into hassles with the firewall managers if you ask
> for the TCP ports required by your protocol to be
> opened.
>
> * Am I going to be shipping more bytes across the
> network if I go native protocol versus HTTP? This
> will have an impact on performance.
>
> * Is my client UI based on HTML? If so, you are
> probably better off with a servlet/JSP solution,
> and let the servlets talk to your back end services
> for you.
>
> Craig McClanahan
>
>
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