Re: [JXTA discuss] Re: [JXTA dev] wire, radiojxta and vop2p

It depends on what is meant by real time.  Any platform which relies on 
relays (JMS, JXTA relays, etc.) will be impacted by intermediary nodes.  
JXTA can provide enough throughput to support video and voice streaming 
in real time provided no relays are in between (with a relay the 
application will suffer latency).  There are several applications built 
on JXTA which provide some form of real time streaming (see myjxta2 for 
voice, and video chatting).  You also might find the following links of 
interest :

Performance Evaluation of JXTA Communication Layers (extended version)
http://www.inria.fr/rrrt/rr-5469.html

Enabling JXTA for High Performance Grid Computing
http://www.inria.fr/rrrt/rr-5488.html

http://bench.jxta.org

As far as offering a UDP transport, you should expect it in the release following "Arroz Congris", it should also provide improved performance especially within the reliability library (Used be JxtaSocket, and JxtaBiDiPipe).


Mohamed

-- 
http://blogs.sun.com/roller/page/hamada
http://weblogs.java.net/blog/hamada



amoretti wrote:

>A related question:
>
>will UDP be supported by JXTA, in particular by JXTA Sockets?
>
>
>--- Eric Pouyoul <[email protected]> ha scritto:
>  
>
>>I cannot talk for radiojxta or vop2p, but the jxta-wire is dead
>>simply because what it implemented got integrated into the JXTA
>>mainstream years ago. Also, JXTA protocol are not designed for
>>high performance such as stream (XML overheard). JXTA can be used
>>for establishing initial links, but non JXTA streaming protocol should
>>be used in order to get proper throughput (or develop a new pipe
>>protocol that is targetted for performance).
>>
>>Eric
>>
>>Horacio Sanson wrote:
>>    
>>
>>>I was wondering if the jxta-wire , radiojxta and vop2p projects are
>>>      
>>>
>>really 
>>    
>>
>>>dead or they moved to another place??  I think this projects are very 
>>>interesting and I want to know more about them.
>>>
>>>
>>>If they are dead, can someone tell me why they died??  Maybe Jxta is not
>>>      
>>>
>>good 
>>    
>>
>>>for realtime media distribution??
>>>
>>>The mailing lists of this projects have not been updated for at least 2 
>>>years...
>>>
>>>any hints are appreciated.
>>>
>>>
>>>I'm copying this email to the jxta dev mailing list also in hopes to get
>>>      
>>>
>>an 
>>    
>>
>>>answer, sorry if anyone gets multiple copies of this email....
>>>
>>>Horacio
>>>
>>>      
>>>