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NNTP-Posting-Date: Mon, 03 Oct 2011 09:59:05 -0500
From: "Qu0ll" <Qu0llSixFour@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Buffered reading seems to corrupt data stream
Date: Tue, 4 Oct 2011 01:58:41 +1100
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.java.programmer:8489

I am trying to repeatedly send a byte array from a server to a client where 
both the writing and the reading is done in a buffered manner with the 
following code on the server:

DataOutputStream dos = new DataOutputStream(os);
dos.writeInt(bytes.length);
dos.write(bytes);
dos.flush();

and this on the client:

System.out.println("Reading size...");
final DataInputStream dis = new DataInputStream(new 
BufferedInputStream(is));
final int size = dis.readInt();
final byte[] bytes = new byte[size];
System.out.println("Reading " + size + " bytes...");
dis.readFully(bytes);

The problem is that for the second or third read, the size variable is 
coming back as garbage (extremely high or even negative value) and the 
reading of the byte array blocks as it waits for a large amount of data to 
be received or crashes with the invalid negative size even though the 
previous size value and the previous bytes themselves are correct.  However, 
if I remove the BufferedInputStream wrapping of stream, it works perfectly.

Why would that be?

--
And loving it,

-Qu0ll (Rare, not extinct)
_________________________________________________
Qu0llSixFour@gmail.com
[Replace the "SixFour" with numbers to email me]