Chris Raber wrote:
>
> Firewalls definitely muddy the waters. There may be some ORBs that provide
> bi-directional tunneling, but I suspect that this could be problematic in
> internet deployments with multiple firewalls etc.
>
> One solution I have seen a lot of is using http protocol from clients, and
> marshalling objects by serializing and encoding them into strings. This is
> passed via http to a servlet that can un-marshal the Java objects and invoke
> on the target bean.
>
> Clients can implement a sort of call back by polling via http.
>
> This is icky, but perhaps a practical consideration for internet
> deployments.
Sounds like a lot of work to me. Just take any ORB/EJB server that supports
HTTP-tunneled IIOP, and use client-pull (blocking calls) from a helper thread
that calls back the main thread in the client when an event is received.
________________________________________________________________________________
Evan Ireland Sybase EAServer Engineering [EMAIL PROTECTED]
Wellington, New Zealand +64 4 934-5856
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
