Multicast Problem

Hi!

I'm trying to send STUB's thru multicast to client applications...But
i'm getting a strange problem with multicast and serialization of
objects...For example:

SERVER SIDE:
public void runTest() throws IOException{
		MulticastSocket ms = new MulticastSocket(9000);		
		ms.joinGroup(InetAddress.getByName("224.10.10.10"));
		
		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		
		ObjectOutputStream oos = new ObjectOutputStream(bos);
		oos.flush();
		oos.writeObject(new String("Olá"));
		oos.flush();
		oos.close();
		
		byte[] sendBuf = bos.toByteArray();
		
				
		DatagramSocket socketudp = new DatagramSocket();												
	        DatagramPacket requestPacket = new DatagramPacket(sendBuf,
				sendBuf.length);
	
		requestPacket.setAddress(InetAddress.getByName("224.10.10.10"));
		requestPacket.setPort(9000);	
			
		DatagramPacket packet = new DatagramPacket(new byte[1000], 1000);
		
                ms.receive(packet);
	
		socketudp.send(requestPacket);
	}

CLIENT SIDE:

public void runTest() throws IOException, ClassNotFoundException{
		MulticastSocket ms = new MulticastSocket(9000);		
		ms.joinGroup(InetAddress.getByName("224.10.10.10"));
		
		byte[] recvBuf = new byte[65535];
		ByteArrayInputStream bis = new ByteArrayInputStream(recvBuf);
		DatagramPacket receivePacket = new DatagramPacket(
				recvBuf, recvBuf.length);

		DatagramSocket socket = new DatagramSocket();		
		DatagramPacket packet = new DatagramPacket(new
String("teste").getBytes(), 5);
		packet.setPort(9000);
		packet.setAddress(InetAddress.getByName("224.10.10.10"));
		socket.send(packet);
		
		ms.receive(receivePacket);
				
		ObjectInputStream ois = new ObjectInputStream(bis);
		String o = (String)ois.readObject();
		
		System.out.println("Result: " + o);
		
		receivePacket.setLength(recvBuf.length);
		
		bis.reset();
		
		ois.close();
	}

And it gives a java.io.StreamCorruptedException: invalid stream header
 But if i replace the multicastsocket with a datagramsocket it work's
fine! What seems to be the problem?? I aprecciate any help. Thanks in
advance.

Miguel

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