Very strange exception in a socket comunication

[sangio85]

Hi guys.
I have a problem. I'm running two threads on a server where I get the client a command string and then under the command because I do an action.
In particular, I get two xml files from the client.
In one case I have no problem. The file is properly received.
In the other case rather than have a very strange because everything is exactly the same as the first case:

the code is:

if("I SENT THE ACTIONS".equals(str)){
System.out.println("S: CLIENT TELL: '" + str + "'");
byte [] mybytearray2 = new byte [filesize];
InputStream is2 = client.getInputStream();
FileOutputStream fos2 = new FileOutputStream("AZIONITOSERVER.xml");
BufferedOutputStream bos2 = new BufferedOutputStream(fos2);
bytesRead2 = is2.read(mybytearray2,0,mybytearray2.length);
current2 = bytesRead2;

do {
bytesRead2 = is2.read(mybytearray2, current2, (mybytearray2.length-current2));
if(bytesRead2 >= 0) current2 += bytesRead2;
} while(bytesRead2 > -1);

bos2.write(mybytearray2, 0 , current2);
bos2.flush();
long end = System.currentTimeMillis();
bos2.close();

The excepition is:
L'eccezione che mi capita è:

java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at java.io.BufferedOutputStream.write(Unknown Source)
at agenda.bean.TCPDesktopServer.run(TCPDesktopServer. java:104)
at java.lang.Thread.run(Unknown Source)

where the row TCPDesktopServer.java:104 is:
bos2.write(mybytearray2, 0 , current2);

The strange thing is that, when not the first thread that is the identical one to this, this exception does not happen and everything works, just that I need to run both threads.
Thaks at alla.
Bye.

[mrmatt1111]

how about:

bos2.write(mybytearray2, 0 , current2 - 1);

instead?

[sangio85]

I'm really sorry but there is no change in the exception and in my program if I do:
bos2.write(mybytearray2, 0 , current2-1);

I will became mad with this type of excemption....