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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-549) [classlib][nio-channels]java.nio.channels.SocketChannel.read/write mis-acts in some condition.
Date Fri, 02 Jun 2006 02:15:29 GMT
[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
    Priority: Minor


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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