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+<code java>
+package nfs;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+public class RemoteStream {
+	final int MAX = 4096;
+	String serverName = null; // name of the remote server
+	String filename = null;   // name of the remote file
+	DatagramSocket ds = null; // the socket used to send data
+	InetAddress serverAddress = null;
+	String handle = null;
+	public RemoteStream(String serverName) {
+		this.serverName = serverName;
+	}
+	public boolean open(String filename) {
+		UDPServerComm comm = new UDPServerComm(serverName, NfsServer.port);
+		DatagramPacket dp = RemotePacket.RemotePacket("OPEN",filename);
+		// packet received: contains the String remote handle
+		DatagramPacket answer = comm.call(dp);
+		if(answer == null)
+			return false; // error receiving
+		RemotePacket rp = new RemotePacket(answer);
+		if(rp.getOp().equals("ERROR")) {
+			System.out.println(rp);
+			return false;
+		}
+		// memorizza handle
+		if(rp.getOp().equals("HANDLE")) {
+			handle = rp.getArgs()[0];
+			return true;
+		}
+		// per default return false
+		return false;
+	}
+	public boolean close() {
+		UDPServerComm comm = new UDPServerComm(serverName, NfsServer.port);
+		DatagramPacket dp = RemotePacket.RemotePacket("CLOSE",handle);
+		// packet received: contains the String remote handle
+		DatagramPacket answer = comm.call(dp);
+		if(answer == null)
+			return false; // error receiving
+		RemotePacket rp = new RemotePacket(answer);
+		if(rp.getOp().equals("ERROR")) {
+			//System.out.println(rp);
+			return false;
+		}
+		return true;
+	}
+}
+</code>