[jbosscache-dev] Re: Non Blocking State Transfer Status (& Integration with JGroups)

[Bela Ban]

Jason T. Greene wrote:
>>
>>
>> What I'm driving at is both of these efforts leave me with a queasy 
>> feeling about adding new and different ways of opening sockets and 
>> communicating around a cluster. OK if needed as an advanced 
>> optimization for the real hard core cases, but IMHO there's a lot of 
>> value in keeping it simple by default.
>>
>
> Something like this could definitely be done in a simple and automated 
> way. It would just make the connection only when it needs it. So 
> really the only headache is firewall, and that can easily be 
> controlled by setting a static port or disabling the feature.

Streaming state transfer has bind_addr (overridden by system property) 
and bind_port. If you don't set bind_port (I mean a value other than 0), 
then the OS picks the port. This could be used to secure/pin down a 
connection wrt firewalls

-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat