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Subject Re: Congrats on Summer of Code proposal selection
Date Thu, 25 May 2006 20:50:44 GMT

I actually developped a ClusterSingleSignOn for Tomcat. It is available on 
the same website :
I followed exactly my applying in the google summer of code. There you can 
find every thing, the patch for tomcat 5.5 and my doubts especially about 

Feedback are welcomed =)

I'm currently implementing a communication layer between cluster tomcat 
nodes using JMS. But I got some doubts too :

- To connect on a JMS server, I register the connection factory in the 
tomcat context as a Resource. But I got a problem, when I want to access 
to the connection factory in the tomcat context from the start function in 
my cluster implementation, it seems that the context is not yet 
initialized... So I can't access to my resource.

- There is three way to send a ClusterMessage in a Tomcat cluster :
sendMessage : to send a message to all the members registered in the node
sendClusterDomain(Domain) : to send a message to all the members 
registered in the same Domain in the node
sendMessage(Member) : to send a message to one member especially
I'd like to know if the functionality to send a message to a specific 
member is used. Because if it is not used, I don't have to developped a 
membership functionality, for the simple fact, that all the members are 
connected to the same topic, and they don't need to know which is alived 
and which is not.

- The JMS specification say when you want to connect to a topic, you have 
to set a client ID, different for every clients. In the current cluster, 
the ID used is the association Host + port, but I can't do that, because I 
don't know the port. So I ask the user to give an ID. It's not a good 
solution (in my mind) a friend point me this solution :
UUID implemented by
I dunno if it could be usable...

Any idea ??
Well that's all for now



Fabien Carrion

()  Campagne du ruban ASCII -- Contre les mails en html
/\  contre les pieces-jointes Microsoft

"Yoav Shapira" <> 
Enviado por:
24/05/2006 02:16 p.m.
Por favor, responda a
"Tomcat Developers List" <>

Tomcat-dev <>

Re: Congrats on Summer of Code proposal selection

It actually looks like this project was among the 1800 that were
mistakingly accepted and then finally rejected by Google [1].  Please
ignore my previous message from earlier today, and consider the
project open to anyone who wants to contribute.


[1] Google announcement and discussion thread:

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