Denys Kim wrote:
>
> Greetings
>
> IHAC who is using Persistence PowrTier EJB app server for on-line trading and stock
>updates. The client is a standalone Java application that essentailly logs in and
>pulls info from the EJB server. It also must receive stock updates from the EJB
>server that is in turn receving updates from the a legacy data source. The question
>is, once the EJB beans has recieved updates from the legacy data source (via JMS or
>other App server supported messaging system) what mechanism can be used to push the
>data to a client acrosss the internet. One option under consideration is using JMS
>Topics to do pub/sub push to the client. I believe the JMS Topics are using
>multicast underneath (the JMS providers are I should say) and if this is the case,
>can multicast span the internet across routers that may not support multicast. If
>JMS is not an option what other methods can be used (other than sockets of course).
>I believe Weblogic has a proprietary event delivery mechanism as well. A!
ny!
!
> h!
<vendor>
Sybase EAServer 3.5 now has a Message Service which can deliver client
notifications over the Internet using IIOP or HTTP-tunneled IIOP, even through
client firewalls. It doesn't use multicast, and it doesn't require the server
to connect to the clients. You might want to check it out.
</vendor>
________________________________________________________________________________
Evan Ireland Sybase EAServer Engineering [EMAIL PROTECTED]
Wellington, New Zealand +64 4 934-5856
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