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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-549) [classlib][nio-channels]java.nio.channels.SocketChannel.read/write mis-acts in some condition.
Date Mon, 05 Jun 2006 12:14:30 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-549?page=comments#action_12414747 ] 

Paulex Yang commented on HARMONY-549:

looks fine, thank you, Mikhail.

> [classlib][nio-channels]java.nio.channels.SocketChannel.read/write mis-acts in some condition.
> ----------------------------------------------------------------------------------------------
>          Key: HARMONY-549
>          URL: http://issues.apache.org/jira/browse/HARMONY-549
>      Project: Harmony
>         Type: Bug

>   Components: Classlib
>     Reporter: Paulex Yang
>     Assignee: Mikhail Loenko
>     Priority: Minor
>  Attachments: Harmony549.diff
> 1. java.nio.channels.SocketChannel.read(ByteBuffer[],int,int) & read(ByteBuffer[])
hang when reading a ByteBuffer array if one of its elements is null. The bug is caused by
incorrect sequence of ByteBuffer-checking. The elements must be checked before reading, currently
Harmony reads and won't throw NPE until it meets a null ByteBuffer.
> 2. java.nio.channels.SocketChannel.write(ByteBuffer[],int,int) should check if any elements
of ByteBuffer array is null before writing into socket. Currently Harmony writes and won't
throw NPE until it meets a null ByteBuffer.
> 3. java.nio.channels.SocketChannel.write(ByteBuffer) causes an IllegalArgumentException
while writing a bytebuffer whose position is not zero.
> 4. java.nio.channels.SocketChannel.write(ByteBuffer) should throw NPE ahead of ClosedChannelException.
When SocketChannel is closed and writes a null buf, it should throw NPE.
> 5. java.nio.channels.SocketChannel.read(ByteBuffer[],int,int) fails to return -1 when
the socket meets EOF. 
> I'll attach test cases and patch for them soon.

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