优化代码，性能暴涨

src/org/kne/cloud/network/klalb/NACKTPacket.java

@@ -10,16 +10,17 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 public class NACKTPacket extends KLALBPacket implements PortPacket{
 
+	private static final int HEADER_LENGTH=18;
 
 	public NACKTPacket(int sport,int dport,long number) {
-		super(NACKT);
-		header.putInt(sport);
-		header.putInt(dport);
-		header.putLong(number);
+		super(NACKT,HEADER_LENGTH);
+		klalbHeader.putInt(sport);
+		klalbHeader.putInt(dport);
+		klalbHeader.putLong(number);
 	}
 
 	public NACKTPacket(ByteBuffer bb) {
-		super(bb);
+		super(bb,HEADER_LENGTH);
 	}
 
 	@Override
@@ -28,25 +29,15 @@ public class NACKTPacket extends KLALBPacket implements PortPacket{
 	}
 
 	public int getSport() {
-		return header.getInt(1);
-	}
-	
-	@Override
-	protected int getHeaderSize() {
-		return super.getHeaderSize()+17;
-	}
-
-	@Override
-	public long getLength() {
-		return super.getLength()+17;
+		return klalbHeader.getInt(1);
 	}
 
 	public int getDport() {
-		return header.getInt(5);
+		return klalbHeader.getInt(5);
 	}
 
 	public long getNumber() {
-		return header.getLong(9);
+		return klalbHeader.getLong(9);
 	}