diff --git a/src/org/kne/cloud/network/klalb/Consts.java b/src/org/kne/cloud/network/klalb/Consts.java
index 9a25c5a..88cd51e 100644
--- a/src/org/kne/cloud/network/klalb/Consts.java
+++ b/src/org/kne/cloud/network/klalb/Consts.java
@@ -1,9 +1,11 @@
 package org.kne.cloud.network.klalb;
 
 public class Consts {
-	public static final int BLOCKSIZE=32768;
+	public static final int BLOCKSIZE=65536;
 	public static final long PINGTIMENS=10000000000L;
 	public static final double A = 0.125;
 	public static final int SO_TIMEOUT = 20000;
 	public static final long SN_KEEP = 60000000000L;
+	public static final int MAX_RESEND = 20;
+	public static final long UACK_TIME = 10000000000L;
 }
diff --git a/src/org/kne/cloud/network/klalb/IOThreadManager.java b/src/org/kne/cloud/network/klalb/IOThreadManager.java
index b665e54..2eb1d0f 100644
--- a/src/org/kne/cloud/network/klalb/IOThreadManager.java
+++ b/src/org/kne/cloud/network/klalb/IOThreadManager.java
@@ -15,35 +15,109 @@ import org.kne.cloud.network.mport.ServiceElement;
 import org.kne.cloud.network.mport.ThreadTool;
 
 public class IOThreadManager {
-	private KLALBCore klc = new KLALBCore(5000);
+	private KLALBCore klc = new KLALBCore(2000);
 	private boolean isopen = true;
 
-	public void handleLocal(LocalTCPConnection tc, ServiceElement se,boolean syn) {
-		klc.getLocaltcps().add(tc);
+	public IOThreadManager() {
+
+	}
+
+	public void handleLocal(LocalTCPConnection tc, boolean syn) {
+		klc.getLocaltcps().put(tc.getCuid(), tc);
 		try {
-			if(syn) {
-				KLALBBlock sbk=new KLALBBlock();
-				sbk.cuid=tc.getCuid();
-				sbk.number=0;
-				sbk.command=2;
-				sbk.lservice=se.proc;
-				sbk.lipport=se.ipport;
+			if (syn) {
+				KLALBBlock sbk = new KLALBBlock();
+				sbk.cuid = tc.getCuid();
+				sbk.number = 0;
+				sbk.command = 2;
+				sbk.lservice = tc.getServiceElement().proc;
+				sbk.lipport = tc.getServiceElement().ipport;
 				klc.submitDataBlockNoDelay(sbk);
 			}
+			
+			
+			Thread lt = ThreadTool.makeVThreadIfSupport("数据包计时重发线程", () -> {
+
+				try {
+					while (true) {
+						klc.outputTimer(tc);
+					}
+				} catch (InterruptedException e) {
+
+				}
+			});
 			Thread ls = ThreadTool.makeVThreadIfSupport("本地发送线程", () -> {
-				
+
+				try {
+					while (true) {
+						KLALBBlock rd=klc.getDataBlock(tc);
+						if(rd.data==null) {
+							break;
+						}
+						tc.unpackBlock(rd);
+					}
+				} catch (InterruptedException e) {
+
+				} catch (IOException e) {
+					lt.interrupt();
+					tc.getOutputcache().clear();
+					KLALBBlock sbk = new KLALBBlock();
+					sbk.cuid = tc.getCuid();
+					sbk.number = 0;
+					sbk.command = 3;
+					klc.submitDataBlockNoDelay(sbk);
+					e.printStackTrace();
+				}finally {
+					try {
+						tc.getDout().close();
+					} catch (IOException e) {
+						e.printStackTrace();
+					}
+				}
 			});
 			Thread lr = ThreadTool.makeVThreadIfSupport("本地接收线程", () -> {
-				
+				try {
+					while (true) {
+						KLALBBlock ks = tc.packBlock();
+						klc.putDataBlock(tc, ks);
+						if (ks.data == null) {
+							break;
+						}
+					}
+				} catch (IOException e) {
+					ls.interrupt();
+					lt.interrupt();
+					tc.getOutputcache().clear();
+					KLALBBlock sbk = new KLALBBlock();
+					sbk.cuid = tc.getCuid();
+					sbk.number = 0;
+					sbk.command = 3;
+					klc.submitDataBlockNoDelay(sbk);
+					e.printStackTrace();
+				} catch (InterruptedException e) {
+				} finally {
+					try {
+						tc.getDin().close();
+					} catch (IOException e) {
+						e.printStackTrace();
+					}
+				}
 			});
+			
+
 			ls.start();
 			lr.start();
-			ls.join();
+			lt.start();
 			lr.join();
+			ls.interrupt();
+			
+			
+			klc.waitOutput(tc);
+			lt.interrupt();
 		} catch (InterruptedException e) {
 			e.printStackTrace();
 		} finally {
-			klc.getLocaltcps().remove(tc);
+			klc.getLocaltcps().remove(tc.getCuid());
 		}
 	}
 
@@ -57,7 +131,6 @@ public class IOThreadManager {
 						klc.remoteSend(tc);
 					}
 				} catch (InterruptedException e) {
-					e.printStackTrace();
 				} catch (IOException e) {
 					e.printStackTrace();
 				}
@@ -67,14 +140,15 @@ public class IOThreadManager {
 					while (true) {
 						klc.remoteReceive(tc);
 					}
-				} catch (IOException e) {
+				} catch (Exception e) {
+					rs.interrupt();
 					e.printStackTrace();
 				}
 			});
 			rs.start();
 			rr.start();
-			rs.join();
 			rr.join();
+			rs.interrupt();
 		} catch (InterruptedException e) {
 			e.printStackTrace();
 		} finally {
@@ -90,4 +164,8 @@ public class IOThreadManager {
 		return isopen;
 	}
 
+	public KLALBCore getCore() {
+		return klc;
+	}
+
 }
diff --git a/src/org/kne/cloud/network/klalb/KLALBBlock.java b/src/org/kne/cloud/network/klalb/KLALBBlock.java
index 9aba7ac..ef2ec9c 100644
--- a/src/org/kne/cloud/network/klalb/KLALBBlock.java
+++ b/src/org/kne/cloud/network/klalb/KLALBBlock.java
@@ -7,7 +7,7 @@ import java.util.concurrent.atomic.AtomicLong;
 
 import org.kne.cloud.network.mport.IPPort;
 
-public class KLALBBlock {
+public class KLALBBlock implements Comparable<KLALBBlock>{
 	private static AtomicLong sng=new AtomicLong(0);
 	
 	public long sn;//每个数据包的唯一编号
@@ -16,10 +16,13 @@ public class KLALBBlock {
 	public byte[]data;//数据内容
 	public int command;//功能标记 0=PING 1=PONG 2=SYN 3=RST
 	public long pingtime;//PING计时器
+	public int cacheused;
 	
 	public String lservice;
 	public IPPort lipport;
-	
+
+	public transient volatile long sendtime;
+	public transient volatile int resend;
 	
 	
 	public KLALBBlock() {
@@ -34,9 +37,13 @@ public class KLALBBlock {
 		sb.append(cuid);
 		sb.append(' ');
 		if(number>0) {
+			if(data==null) {
+				sb.append("DATA").append(number).append(':').append("EOF");
+			}else {
 			sb.append("DATA").append(number).append(':').append(data.length);
+			}
 		}else if(number<0) {
-			sb.append("ACK").append(-number);
+			sb.append("ACK").append(-number).append(':').append(cacheused);
 		}else {
 			switch(command) {
 			case 0:
@@ -55,5 +62,18 @@ public class KLALBBlock {
 		}
 		return sb.toString();
 	}
+
+
+
+	@Override
+	public int compareTo(KLALBBlock o) {
+		if(o.number>number) {
+			return -1;
+		}else if(o.number<number){
+			return 1;
+		}else {
+		return 0;
+		}
+	}
 	
 }
diff --git a/src/org/kne/cloud/network/klalb/KLALBClient.java b/src/org/kne/cloud/network/klalb/KLALBClient.java
index 295d133..792a72f 100644
--- a/src/org/kne/cloud/network/klalb/KLALBClient.java
+++ b/src/org/kne/cloud/network/klalb/KLALBClient.java
@@ -2,11 +2,13 @@ package org.kne.cloud.network.klalb;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
+import java.io.EOFException;
 import java.io.File;
 import java.io.IOException;
 import java.net.ConnectException;
 import java.net.MalformedURLException;
 import java.net.Socket;
+import java.net.SocketTimeoutException;
 import java.net.URI;
 import java.net.URL;
 import java.net.UnknownHostException;
@@ -37,8 +39,9 @@ public class KLALBClient {
 			LocalTCPConnection tcc = null;
 			try {
 				tcc = new LocalTCPConnection(s);
+				tcc.setServiceElement(sel);
 				System.out.println("TCP："+tcc.getCuid()+"已连接");
-					iom.handleLocal(tcc,sel,true);
+					iom.handleLocal(tcc,true);
 					System.out.println("TCP："+tcc.getCuid()+"已关闭");
 			} catch (IOException e) {
 				e.printStackTrace();
@@ -64,12 +67,17 @@ public class KLALBClient {
 						tc.getDout().writeLong(suid.getMostSignificantBits());
 						tc.getDout().writeLong(suid.getLeastSignificantBits());
 						tc.getDout().flush();
+						int v=tc.getDin().read();
+						if(v==-1) {
+							throw new EOFException();
+						}
 						System.out.println(tll+"：连接成功");
 						iom.handleRemote(tc);
 						System.out.println(tll+"：连接断开");
 					} catch (UnknownHostException e) {
 						e.printStackTrace();
-					}catch(ConnectException e) {
+					}catch(ConnectException|SocketTimeoutException e) {
+					}catch(EOFException e) {
 					} catch (IOException e) {
 						e.printStackTrace();
 					}finally {
diff --git a/src/org/kne/cloud/network/klalb/KLALBCore.java b/src/org/kne/cloud/network/klalb/KLALBCore.java
index c12fe47..a74fd86 100644
--- a/src/org/kne/cloud/network/klalb/KLALBCore.java
+++ b/src/org/kne/cloud/network/klalb/KLALBCore.java
@@ -8,6 +8,7 @@ import java.io.OutputStream;
 import java.io.StreamCorruptedException;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedList;
@@ -15,12 +16,14 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Queue;
+import java.util.Random;
 import java.util.Set;
 import java.util.TreeMap;
 import java.util.UUID;
 import java.util.Vector;
 import java.util.WeakHashMap;
 import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingDeque;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
@@ -35,8 +38,7 @@ public class KLALBCore {
 	private static final UUID ZERO_UUID=new UUID(0,0);
 	private volatile int cacheblocks;
 	
-
-	private List<LocalTCPConnection> localtcps = new Vector<>();
+	private Map<UUID,LocalTCPConnection> localtcps = new ConcurrentHashMap<>();
 	private List<RemoteTCPConnection> remotetcps = new Vector<>();
 	private Predicate<KLALBBlock>acceptSYN;
 	
@@ -80,7 +82,7 @@ public class KLALBCore {
 		this.acceptSYN = acceptSYN;
 	}
 
-	public List<LocalTCPConnection> getLocaltcps() {
+	public Map<UUID, LocalTCPConnection> getLocaltcps() {
 		return localtcps;
 	}
 
@@ -108,6 +110,7 @@ public class KLALBCore {
 		}
 		KLALBBlock k=tc.getSendDeque().poll();
 		if(k!=null) {
+			//if(localtcps.containsKey(k.cuid)||k.cuid.equals(ZERO_UUID))
 			tc.sendBlock(k);
 		}
 	}
@@ -115,6 +118,9 @@ public class KLALBCore {
 		KLALBBlock brc=null;
 		for(;;) {
 		brc=tc.receiveBlock();
+		if(brc.number!=0) {
+			break;
+		}
 		SN s=new SN(brc.sn);
 		synchronized (rsns) {	
 		if(!rsns.contains(s)) {
@@ -163,12 +169,64 @@ public class KLALBCore {
 						submitDataBlockNoDelay(rst);
 					}
 				}else if(brc.command==3) {
+					LocalTCPConnection ltc=localtcps.get(brc.cuid);
+					if(ltc!=null) {
+						ltc.close();
+					}
+				}
+			}else if(brc.number>0){
+				LocalTCPConnection ltcs=localtcps.get(brc.cuid);
+				if(ltcs!=null) {
+				ltcs.getSendDeque().add(brc);
+				
+				KLALBBlock ack=new KLALBBlock();
+					ack.cuid=brc.cuid;
+					ack.number=-brc.number;
+					ack.cacheused=ltcs.getSendDeque().size();
+					submitDataBlockNoDelay(ack);
+				}
+					
+				
+			}else {
+				long nx=-brc.number;
+				LocalTCPConnection ltc=localtcps.get(brc.cuid);
+				if(ltc!=null) {
+				ltc.getOutputcache().removeIf((b) -> {
+					return b.number == nx;
+				});
+				ltc.setPeerCacheUsed(brc.cacheused);
 				}
 			}
 		}
+
 	}
-	public void submitDataBlock(KLALBBlock kb) {
-		
+	public void submitDataBlock(KLALBBlock kb) throws InterruptedException {
+			while(true) {
+				synchronized (remotetcps) {
+					Collections.sort(remotetcps, new Comparator<RemoteTCPConnection>() {
+						@Override
+						public int compare(RemoteTCPConnection o1, RemoteTCPConnection o2) {
+							if(o1.getDelay()>o2.getDelay()) {
+								return 1;
+						}else if(o1.getDelay()<o2.getDelay()){
+							return -1;
+						}else {
+							return 0;
+						}
+						}
+					});
+					for (Iterator<RemoteTCPConnection> iterator = remotetcps.iterator(); iterator.hasNext();) {
+						RemoteTCPConnection remoteTCPConnection = (RemoteTCPConnection) iterator.next();
+						BlockingDeque<KLALBBlock> bdq=remoteTCPConnection.getSendDeque();
+						if(bdq.size()<1) {
+							bdq.add(kb);
+							return;
+						}
+					}
+				}
+				Thread.sleep(1);
+			}
+			
 	}
 	public void submitDataBlockNoDelay(KLALBBlock kb) {
 		synchronized (remotetcps) {
@@ -178,4 +236,57 @@ public class KLALBCore {
 			}
 		}
 	}
+
+	public void putDataBlock(LocalTCPConnection tc, KLALBBlock ks) throws InterruptedException {
+		while (!tc.getOutputcache().isEmpty()&&(tc.getOutputcount()-tc.getOutputcache().get(0).number>cacheblocks)) {
+			Thread.sleep(1);
+		}
+		submitDataBlock(ks);
+		ks.sendtime=System.nanoTime();
+		tc.getOutputcache().add(ks);
+		while(tc.getPeerCacheUsed()>cacheblocks) {
+			Thread.sleep(1);
+		}
+	}
+
+	private volatile long uackt=System.nanoTime();
+	public void outputTimer(LocalTCPConnection tc) throws InterruptedException {
+		List<KLALBBlock> l=tc.getOutputcache();
+		synchronized( l) {
+			for (int i = 0; i < l.size(); i++) {
+				KLALBBlock block=l.get(i);
+				long timex = (System.nanoTime() - block.sendtime) / 1000000;
+				if (timex > 200+1000*i) {
+					submitDataBlock(block);
+					block.sendtime = System.nanoTime();
+					block.resend++;
+					if(block.resend>=Consts.MAX_RESEND) {
+						l.remove(i);
+						i--;
+					}
+				System.out.println("超时重传："+block);
+				}
+			}
+		}
+		long curr=System.nanoTime();
+		if(tc.getSendDeque().size()<cacheblocks&&curr-uackt>Consts.UACK_TIME) {
+			uackt=curr;
+			KLALBBlock ack=new KLALBBlock();
+			ack.cuid=tc.getCuid();
+			ack.number=Long.MIN_VALUE;
+			ack.cacheused=tc.getSendDeque().size();
+			submitDataBlockNoDelay(ack);
+		}
+		Thread.sleep(10);
+	}
+
+	public KLALBBlock getDataBlock(LocalTCPConnection tc) throws InterruptedException {
+	 return tc.getSendDeque().take();
+	}
+
+	public void waitOutput(LocalTCPConnection tc) throws InterruptedException {
+		while(tc.getOutputcache().size()>0) {
+			Thread.sleep(10);
+		}
+	}
 }
diff --git a/src/org/kne/cloud/network/klalb/KLALBServer.java b/src/org/kne/cloud/network/klalb/KLALBServer.java
index 8f2d9a1..686d29c 100644
--- a/src/org/kne/cloud/network/klalb/KLALBServer.java
+++ b/src/org/kne/cloud/network/klalb/KLALBServer.java
@@ -16,6 +16,7 @@ import java.util.WeakHashMap;
 
 import org.kne.cloud.network.mport.IPPort;
 import org.kne.cloud.network.mport.ServiceElement;
+import org.kne.cloud.network.mport.ThreadTool;
 
 public class KLALBServer {
 	
@@ -66,9 +67,30 @@ public class KLALBServer {
 					nx=whm.get(uid);
 				}else {
 					nx=new IOThreadManager();
+					IOThreadManager n1=nx;
+					nx.getCore().setAcceptSYN((b)->{
+						try {
+							Socket soc=new Socket(b.lipport.getIp(),b.lipport.getPort());
+							LocalTCPConnection ltc=new LocalTCPConnection(soc, b.cuid);
+							ThreadTool.makeVThreadIfSupport("局域网连接监视线程", ()->{
+								try {
+								n1.handleLocal(ltc, false);
+								}finally {
+									n1.close();
+								}
+							}).start();
+						return true;
+						} catch (IOException e) {
+							System.out.println("连接本地服务"+b.lipport+"失败，请检查你的本地服务");
+							e.printStackTrace();
+						}
+						return false;
+					});
 					whm.put(uid, nx);
 				}
 				}
+				tcc.getDout().write(0);
+				tcc.getDout().flush();
 				nx.handleRemote(tcc);
 			}catch(IOException e) {
 				e.printStackTrace();
diff --git a/src/org/kne/cloud/network/klalb/LocalTCPConnection.java b/src/org/kne/cloud/network/klalb/LocalTCPConnection.java
index 7dd49c2..25e90d7 100644
--- a/src/org/kne/cloud/network/klalb/LocalTCPConnection.java
+++ b/src/org/kne/cloud/network/klalb/LocalTCPConnection.java
@@ -2,11 +2,22 @@ package org.kne.cloud.network.klalb;
 
 import java.io.IOException;
 import java.net.Socket;
-import java.net.UnknownHostException;
-import java.util.UUID;
+import java.util.*;
+import java.util.concurrent.BlockingDeque;
+import java.util.concurrent.LinkedBlockingDeque;
+
+import org.kne.cloud.network.mport.ServiceElement;
 
 public class LocalTCPConnection extends TCPConnection {
 private UUID cuid;
+private ServiceElement serviceElement;
+
+
+private Set<KLALBBlock> inputcache = new TreeSet<>();
+private List<KLALBBlock> outputcache = new Vector<>();
+
+private volatile long inputcount = 1;
+private volatile long outputcount = 1;
 	public LocalTCPConnection(Socket s) throws IOException {
 		super(s);
 		cuid=UUID.randomUUID();
@@ -21,5 +32,68 @@ private UUID cuid;
 	public void setCuid(UUID cuid) {
 		this.cuid = cuid;
 	}
+	public ServiceElement getServiceElement() {
+		return serviceElement;
+	}
+	public void setServiceElement(ServiceElement serviceElement) {
+		this.serviceElement = serviceElement;
+	}
 	
+	
+	public Set<KLALBBlock> getInputcache() {
+ 		return inputcache;
+	}
+	public List<KLALBBlock> getOutputcache() {
+		return outputcache;
+	}
+	public long getInputcount() {
+		return inputcount;
+	}
+	public long getOutputcount() {
+		return outputcount;
+	}
+	public void unpackBlock(KLALBBlock data) throws IOException {
+		if(data.number<inputcount) {
+			return;
+		}
+		inputcache.add(data);
+		for (Iterator<KLALBBlock> iterator = inputcache.iterator(); iterator.hasNext();) {
+			KLALBBlock klalbBlock = (KLALBBlock) iterator.next();
+			if(klalbBlock.number==inputcount) {
+				iterator.remove();
+				getDout().write(klalbBlock.data);
+				getDout().flush();
+				inputcount++;
+			}else {
+				break;
+			}
+		}
+	}
+	public KLALBBlock packBlock() throws IOException {
+		byte[]dat=new byte[Consts.BLOCKSIZE];
+		int len=getDin().read(dat);
+		
+		KLALBBlock pb=new KLALBBlock();
+		pb.cuid=cuid;
+		pb.number=outputcount++;
+		if(len==-1) {
+			pb.data=null;
+		}else if(len==dat.length){
+		pb.data=dat;
+		}else {
+			pb.data=Arrays.copyOf(dat, len);
+		}
+		return pb;
+	}
+	private BlockingDeque<KLALBBlock>sendDeque=new LinkedBlockingDeque<>();
+	public BlockingDeque<KLALBBlock> getSendDeque() {
+		return sendDeque;
+	}
+	private volatile int pcu=0;
+	public void setPeerCacheUsed(int cacheused) {
+		pcu= cacheused;
+	}
+	public int getPeerCacheUsed() {
+		return pcu;
+	}
 }
diff --git a/src/org/kne/cloud/network/klalb/RemoteTCPConnection.java b/src/org/kne/cloud/network/klalb/RemoteTCPConnection.java
index 6a041f1..f19a000 100644
--- a/src/org/kne/cloud/network/klalb/RemoteTCPConnection.java
+++ b/src/org/kne/cloud/network/klalb/RemoteTCPConnection.java
@@ -10,46 +10,55 @@ import java.util.concurrent.LinkedBlockingDeque;
 import org.kne.cloud.network.mport.IPPort;
 
 public class RemoteTCPConnection extends TCPConnection {
-	
+
 	public RemoteTCPConnection(Tunnel t) throws UnknownHostException, IOException {
-		this(t,t.connectClientSocket());
+		this(t, t.connectClientSocket());
 	}
-	public RemoteTCPConnection(Tunnel t,Socket s) throws UnknownHostException, IOException {
+
+	public RemoteTCPConnection(Tunnel t, Socket s) throws UnknownHostException, IOException {
 		super(s);
-		this.tunnel=t;
+		this.tunnel = t;
 		s.setSoTimeout(Consts.SO_TIMEOUT);
 	}
-	private long delay=-1;
+
+	private long delay = Long.MAX_VALUE;
 	private Tunnel tunnel;
+
 	public Tunnel getTunnel() {
 		return tunnel;
 	}
-	
+
 	public void setTunnel(Tunnel tunnel) {
 		this.tunnel = tunnel;
 	}
+
 	public long getDelay() {
 		return delay;
 	}
 
 	public void setDelay(long delay) {
 		this.delay = delay;
-		if(tunnel!=null) {
+		if (tunnel != null) {
 			tunnel.setDelay(delay);
 		}
-		
+
 	}
+
 	public void sendBlock(KLALBBlock data) throws IOException {
 		dout.writeLong(data.sn);
 		dout.writeLong(data.cuid.getMostSignificantBits());
 		dout.writeLong(data.cuid.getLeastSignificantBits());
 		dout.writeLong(data.number);
-		if(data.number>0) {
-			dout.writeInt(data.data.length);
-			dout.write(data.data);
-		}else if(data.number==0) {
+		if (data.number > 0) {
+			if (data.data == null) {
+				dout.writeInt(-1);
+			} else {
+				dout.writeInt(data.data.length);
+				dout.write(data.data);
+			}
+		} else if (data.number == 0) {
 			dout.write(data.command);
-			switch(data.command) {
+			switch (data.command) {
 			case 0:
 			case 1:
 				dout.writeLong(data.pingtime);
@@ -59,51 +68,62 @@ public class RemoteTCPConnection extends TCPConnection {
 				dout.writeUTF(data.lipport.toString());
 				break;
 			}
+		} else {
+			dout.writeInt(data.cacheused);
 		}
-		
+
 		dout.flush();
 
-		System.out.println("SEND:"+data);
+		System.out.println("SEND:" + data);
 	}
+
 	public KLALBBlock receiveBlock() throws IOException {
-		KLALBBlock klb=new KLALBBlock();
-		klb.sn=din.readLong();
-		klb.cuid=new UUID(din.readLong(), din.readLong());
-		klb.number=din.readLong();
-		if(klb.number>0) {
-			int size=din.readInt();
-					byte[]d=new byte[size];
-					din.readFully(d);
-					klb.data=d;
-		}else if(klb.number==0) {
-			klb.command=din.read();
-			switch(klb.command) {
+		KLALBBlock klb = new KLALBBlock();
+		klb.sn = din.readLong();
+		klb.cuid = new UUID(din.readLong(), din.readLong());
+		klb.number = din.readLong();
+		if (klb.number > 0) {
+			int size = din.readInt();
+			if (size == -1) {
+				klb.data = null;
+			} else {
+				byte[] d = new byte[size];
+				din.readFully(d);
+				klb.data = d;
+			}
+		} else if (klb.number == 0) {
+			klb.command = din.read();
+			switch (klb.command) {
 			case 0:
 			case 1:
-				klb.pingtime=din.readLong();
+				klb.pingtime = din.readLong();
 				break;
 			case 2:
-				klb.lservice=din.readUTF();
-				klb.lipport=new IPPort(din.readUTF());
+				klb.lservice = din.readUTF();
+				klb.lipport = new IPPort(din.readUTF());
 			}
+		} else {
+			klb.cacheused = din.readInt();
 		}
 
-		System.out.println("RECEIVE:"+klb);
+		System.out.println("RECEIVE:" + klb);
 		return klb;
 	}
-	
-	private volatile long time=System.nanoTime();
+
+	private volatile long time = System.nanoTime();
+
 	public boolean checkPingTime() {
-		long cu=System.nanoTime();
-		if(cu-time>Consts.PINGTIMENS) {
-			time=cu;
+		long cu = System.nanoTime();
+		if (cu - time > Consts.PINGTIMENS) {
+			time = cu;
 			return true;
-		}else {
+		} else {
 			return false;
 		}
 	}
-	
-	private BlockingDeque<KLALBBlock>sendDeque=new LinkedBlockingDeque<>();
+
+	private BlockingDeque<KLALBBlock> sendDeque = new LinkedBlockingDeque<>();
+
 	public BlockingDeque<KLALBBlock> getSendDeque() {
 		return sendDeque;
 	}
diff --git a/src/org/kne/cloud/network/klalb/Tunnel.java b/src/org/kne/cloud/network/klalb/Tunnel.java
index 0003d64..452ff41 100644
--- a/src/org/kne/cloud/network/klalb/Tunnel.java
+++ b/src/org/kne/cloud/network/klalb/Tunnel.java
@@ -24,7 +24,7 @@ public class Tunnel {
 	public IPPort getIpport() {
 		return ipport;
 	}
-	private long delay=-1;
+	private long delay=Long.MAX_VALUE;
 	public long getDelay() {
 		return delay;
 	}
@@ -100,7 +100,7 @@ public class Tunnel {
 		for (Iterator iterator = s.iterator(); iterator.hasNext();) {
 			Entry<IPPort, Tunnel> entry = (Entry<IPPort, Tunnel>) iterator.next();
 			Tunnel tll=entry.getValue();
-			System.out.println(tll.getName()+" "+((tll.getDelay()==-1)?"未知":tll.getDelay()/1000000+"ms")+" 连接数"+tll.ati);
+			System.out.println(tll.getName()+" "+((tll.getDelay()==Long.MAX_VALUE)?"未知":tll.getDelay()/1000000+"ms")+" 连接数"+tll.ati);
 		}
 	}
 	private AtomicInteger ati=new AtomicInteger(0);
diff --git a/src/org/kne/cloud/network/klalb/UUID1.java b/src/org/kne/cloud/network/klalb/UUID1.java
new file mode 100644
index 0000000..411397a
--- /dev/null
+++ b/src/org/kne/cloud/network/klalb/UUID1.java
@@ -0,0 +1,25 @@
+package org.kne.cloud.network.klalb;
+
+import java.time.Duration;
+import java.time.LocalDateTime;
+import java.util.Random;
+
+public class UUID1 {
+	private static long get64LeastSignificantBitsForVersion1() {
+	    Random random = new Random();
+	    long random63BitLong = random.nextLong() & 0x3FFFFFFFFFFFFFFFL;
+	    long variant3BitFlag = 0x8000000000000000L;
+	    return random63BitLong + variant3BitFlag;
+	}
+
+	private static long get64MostSignificantBitsForVersion1() {
+	    LocalDateTime start = LocalDateTime.of(1582, 10, 15, 0, 0, 0);
+	    Duration duration = Duration.between(start, LocalDateTime.now());
+	    long seconds = duration.getSeconds();
+	    long nanos = duration.getNano();
+	    long timeForUuidIn100Nanos = seconds * 10000000 + nanos * 100;
+	    long least12SignificatBitOfTime = (timeForUuidIn100Nanos & 0x000000000000FFFFL) >> 4;
+	    long version = 1 << 12;
+	    return (timeForUuidIn100Nanos & 0xFFFFFFFFFFFF0000L) + version + least12SignificatBitOfTime;
+	}
+}