users@grizzly.java.net

Re: Streaming server with Grizzly

From: Jeanfrancois Arcand <Jeanfrancois.Arcand_at_Sun.COM>
Date: Fri, 19 Sep 2008 09:09:17 -0400

Salut,

Oleksiy Stashok wrote:
> I have certain concerns regarding using TCP protocols for
> live-streaming. But as I told, I don't have much experience with that,
> so may be it's right choice.

TCP should be fine IMO. During JavaOne 2006 James Gosling demonstrated
the Java Rela Time VM with Grizzly running on top, streaming videos :-).
As far as I can tell it worked well but might not scale if not
implemented properly.

A+

-- Jeanfrancois
>
> WBR,
> Alexey.
>
> On Sep 19, 2008, at 14:53 , Jeanfrancois Arcand wrote:
>
>> Salut,
>>
>> Survivant 00 wrote:
>>> suppose that I want to do it with http protocol. What should I use
>>> ? (the client will be in java too)
>>> - plain Grizzly as server ?
>>> - comet ?
>>
>> Hey hey of course Comet! :-) Seriously you have 2 choices:
>>
>> (1) Extend the http module (via the Adapter/GrizzlyAdapter interface)[1]
>> and implement you own way of suspending/resuming using AsyncFilter[2]
>>
>> (2) Use Grizzly Comet Framework to resume/suspend connection, and your
>> application using a Servlet.
>>
>> Both should works :-)
>>
>> A+
>>
>> -- Jeanfrancois
>>
>> [1]https://grizzly.dev.java.net/nonav/apidocs/com/sun/grizzly/tcp/http11/GrizzlyAdapter.html
>>
>> [2]https://grizzly.dev.java.net/nonav/apidocs/com/sun/grizzly/arp/AsyncFilter.html
>>
>>
>>
>>
>>> - package http of grizzly ?
>>> - grizzlet ?
>>> - glassfish as webserver ?
>>> 2008/9/18 Survivant 00 <survivant00_at_gmail.com
>>> <mailto:survivant00_at_gmail.com>>
>>> I found this protocol
>>> http://jstun.javawi.de/
>>> but I wanted to validate if the Grizzly Community ever did or try to
>>> setup a server/client through a NAT network.
>>> Will be fun to try..(will give you the code when it's ready)
>>> suggestions are welcome.
>>> 2008/9/18 Jeanfrancois Arcand <Jeanfrancois.Arcand_at_sun.com
>>> <mailto:Jeanfrancois.Arcand_at_sun.com>>
>>> Salut,
>>> Survivant 00 wrote:
>>> does Grizzly have custom protocol handler to handler udp
>>> through NAT and firewalled network ?
>>> No, but should this configured at the JDK level? You have to
>>> train myself on that topic :-)
>>> A+
>>> --Jeanfrancois
>>> 2008/9/18 Oleksiy Stashok <Oleksiy.Stashok_at_sun.com
>>> <mailto:Oleksiy.Stashok_at_sun.com>
>>> <mailto:Oleksiy.Stashok_at_sun.com
>>> <mailto:Oleksiy.Stashok_at_sun.com>>>
>>> Hi,
>>> a little question. I would like to do as my next
>>> demo, a music
>>> streaming server using Grizzly.
>>> Sounds very interesting! :)
>>> Frist, there is a demo that do live broadcasting (not
>>> a push,
>>> but continually sending data to all users). I don't
>>> know if I
>>> should use async write or not.
>>> I would say yes - async write could be better to make
>>> server more
>>> scalable.
>>> any suggestion how I shoudl start and what I should
>>> consider in
>>> my design ?
>>> Hmm... I don't have any experience in broadcasting
>>> audio/video.
>>> However I would expect you should write such a protocol
>>> on top of
>>> UDP, right? Probably with some reliability features.
>>> I suppose that the client will have a buffer and
>>> no, or a
>>> little, latency on the network, and no error recovery
>>> (the data
>>> will be lost.. that's it)..
>>> Right. With UDP it's doable.
>>> Thanks.
>>> WBR,
>>> Alexey.
>>>
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