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From Wes McKean <wmck...@logictrends.com>
Subject Re: Serverside NIO: Not ready for Prime Time
Date Wed, 26 Nov 2003 23:01:34 GMT
Reading the data in single thread seems to solve the problem, and works 
equally well on Windows and Linux.  I will post a bug to the Bug Database at 
Sun on Friday.

Wes

On Wednesday 26 November 2003 09:48 am, Wes McKean wrote:
> Well, what really aggrevates me about all of this is that the
> implementation I am using is relatively simple.  One thread handles the
> catching of the events, and a separate thread handles the processing.  It
> is all realatively clean, and straight forward.  It works like a champ
> under Linux, and works about 70% under Windows.
>
> What I would like to see happen is somebody at Sun address this issue. 
> Does anyone have any experience with this?
>
> Your suggestion for reading the byte buffer in the same thread is less
> elegant than the current solution and could cause issues ( I'm thinking
> about them as I write this :-)  In our case, we are passing the bytes from
> the
> SocketChannel off to the Decoder for processing.  What happens if an entire
> ASN.1 packet does not come over in the first read event?  This is what will
> have to happen:
>
> 1.  The read event comes in.
> 2.  The *selector* thread reads 2/3rds of the ASN.1 packet ( it has no way
> of knowing when the complete packet has arrived)
> 3.  It passes the buffer off to the decoder.
> 4.  The decoder reads  the buffer, and then blocks cause it only has 2/3rds
> of the packet.
> 5.  The second READ event comes in with the rest of the packet.
> 6.  The selector thread reads the bytes and appends them to the end of the
> first read.
> 7.  The decoder thread unblocks and continues reading bytes to the end of
> the ASN.1 packet.
>
> That's gross... but I've got some bandwith this week, so I'm willing to
> give it a try to see if it works.  I'll report back by Friday.
>
> Wes


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