增加延迟检测功能

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

@@ -9,7 +9,7 @@ public class KLALBBlock {
 	 volatile long number;
 	 
 	 
-	 //volatile  long time=-1;
+	 volatile  long time=-1;
 	 volatile  Thread thread;
 	public KLALBBlock(byte[] b, int size,long number) {
 		data=b;
@@ -23,6 +23,10 @@ public class KLALBBlock {
 	public String toString() {
 		if(number>0) {
 			return "DATA"+number+":"+size;
+		}else if(number==0){
+			return "PING";
+		}else if(number==Long.MIN_VALUE){
+			return "PONG";
 		}else {
 			return "ACK"+(-number);
 		}