增加了发包的反编码测试（最后定位的问题是后台的NAT没开）；目的标识的随机字段，由原来的.数字，修改为纯数字

app/src/main/java/com/pkusz/min_vpn_client/services/Runnables/SendTask.java

@@ -8,6 +8,7 @@ package com.pkusz.min_vpn_client.services.Runnables;
  */
 
 import com.pkusz.min_vpn_client.services.ByteBufferPool;
+import com.pkusz.min_vpn_client.utils.TLVDecoderHelper;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -15,9 +16,12 @@ import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.locks.Lock;
 
+import component.ComponentException;
+import encoding.BlockException;
 import logicface.LogicFace;
 import logicface.LogicFaceException;
 import packet.CPacket;
+import packet.PacketException;
 
 public class SendTask implements Runnable{
     private ConcurrentLinkedQueue<CPacket> readTunCPackets;
@@ -52,6 +56,14 @@ public class SendTask implements Runnable{
                     try {
 //                        face.sendCPacket(cPacket);
                         face.sendQuickCPacketV3(cPacket.getRawData());
+                        // todo； 测试！！！
+//                        try {
+//                            CPacket hiPacket=TLVDecoderHelper.getCPacketFromBytes(cPacket.getRawData());
+//                            System.out.println("测试神奇的外访！！(源)："+hiPacket.getSrcIdentifier().toUri());
+//                            System.out.println("测试神奇的外访！！(目的)："+hiPacket.getDstIdentifier().toUri());
+//                        } catch (BlockException | PacketException | ComponentException e) {
+//                            e.printStackTrace();
+//                        }
                     }catch (LogicFaceException e){
                         e.printStackTrace();
                         System.out.println("error: face发包出现问题，请及时修复(inner)!!!");

app/src/main/java/com/pkusz/min_vpn_client/services/VpnExtranetPreparation.java

@@ -270,6 +270,9 @@ public class VpnExtranetPreparation implements VpnPreparationInterface{
         // 3. 发送兴趣包到服务器，接收服务器发回来的数据包
         String handshakeResponse;
         try {
+            // todo:测试！！
+//            cPacket.encodeSelf();
+//            System.out.println("测试哇 cpacket bytes: "+ Arrays.toString(cPacket.getRawData()));
             face.sendCPacket(cPacket);
             CPacket data=face.receiveCPacket(10000);
             ByteBuffer respondBuf = ByteBuffer.allocate(1024);

app/src/main/java/com/pkusz/min_vpn_client/utils/StringUtilForCPacketEncoding.java

@@ -30,7 +30,7 @@ public class StringUtilForCPacketEncoding {
         // 将获得的获得随机数转化为字符串
         String fixLenthString = String.valueOf(pross);
         // 返回固定的长度的随机数
-        return fixLenthString.substring(1, strLength + 1);
+        return fixLenthString.substring(2, strLength + 2);
     }
     //————————————————
     //    版权声明：本文为CSDN博主「鸿鹰」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。

app/src/main/java/com/pkusz/min_vpn_client/utils/StringUtilForCPacketEncodingWithSig.java

@@ -8,6 +8,7 @@ package com.pkusz.min_vpn_client.utils;
  */
 
 import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
 
 import encoding.TLV;
 import encoding.TLVException;

app/src/main/java/com/pkusz/min_vpn_client/utils/TLVDecoderHelper.java

@@ -0,0 +1,29 @@
+package com.pkusz.min_vpn_client.utils;
+/*
+ * @Author: Wang Feng
+ * @Description:
+ * @Version: 1.0.0
+ * @Date: 17:06 2021/12/29
+ * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
+ */
+
+import encoding.Block;
+import encoding.BlockException;
+import packet.CPacket;
+import packet.PacketException;
+
+public class TLVDecoderHelper {
+    public static CPacket getCPacketFromBytes(byte[] rawbytes) throws BlockException, PacketException {
+        Block block=new Block(rawbytes,true);
+        if(!block.isValid()){
+            System.out.println("buf invalid");
+            return null;
+        }
+        CPacket cPacket=new CPacket();
+        if(!cPacket.wireDecode(block)){
+            System.out.println("parse to CPacket error");
+            return null;
+        }
+        return cPacket;
+    }
+}