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java.nio and Selctor

Andrew Mcmurray
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Joined: Sep 24, 2005
Posts: 188
Hi all

I am trying to understand how java.nio with Async non blocking chanels. Basicly I am going to have to write a server that opens up a port and allows many different clients stream data to it to be processed. I have seen some examples, and I have gotton them to work some, but I want to understand what they are doing.

I understand that you set the channel up to the port you want to listen on, but I am not sure how the Selector and SelctorKeys work with it? Can anyone please explain at a high level how all of this is working?

Thanks,

AMD
Nicholas Jordan
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Joined: Sep 17, 2006
Posts: 1282
Well, it appears to be a " static factory method " which I have heard so often, but wondered what they were talking about until the last few days when I had to figure it out because it has become time that I should grasp some fundamental java.security issues.

static ChannelIO getInstance(SocketChannel sc, boolean blocking)

will return a new'ed object, which must therefore be called in the run method of Acceptor - > which leads us directly into Servlets.

It may be that that is where your question should go, I started to read on Servlets and it is apparent that there is some code in the Servlet class that is implemented in the JVM and underlying interface code.

Message edit: I just found this: Saloon � Java � Sockets and Internet Protocols which may be even better.
[ September 18, 2007: Message edited by: Nicholas Jordan ]

"The differential equations that describe dynamic interactions of power generators are similar to that of the gravitational interplay among celestial bodies, which is chaotic in nature."
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: java.nio and Selctor
 
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