将VMSConnection模块加入min-dev-java，以支持与VMS进行通信，执行注册、登录等功能

src/main/java/VMSConnection/TCPNet/TCPNet.java

@@ -0,0 +1,75 @@
+package VMSConnection.TCPNet;
+
+import VMSConnection.Security.BC_KeyManager;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.channels.SocketChannel;
+import java.nio.charset.StandardCharsets;
+
+/*
+ * @Author: Wang Feng
+ * @Description:
+ * @Version: 1.0.0
+ * @Date: 19:17 2021/6/23
+ * @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
+ */
+public class TCPNet {
+    public SocketChannel socketChannel; // 网络套接字
+    public BC_KeyManager key; // 密钥管理
+    public BC_KeyManager serverKey; //just pubkey can be used
+
+    public Conn Dials(String sslHost,Integer sslPort){
+        // 1. 尝试连接TCP
+        SocketChannel sk= null;
+        try {
+            sk = SocketChannel.open();
+            sk.connect(new InetSocketAddress(sslHost,sslPort));
+            // 设置超时时间
+            sk.socket().setKeepAlive(true);
+            sk.socket().setSoTimeout(5000);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+        // 2. 创建一个conn，并返回
+        return new TCPConn(sk, this.key,1);
+    }
+
+    public Conn Dials(String host,Integer port,String sslHost,Integer sslPort,
+                      BC_KeyManager key,byte[] serverPubKey){
+        // 2. 设置密钥serverKey
+        this.key=key;
+        BC_KeyManager serverK=new BC_KeyManager();
+        serverK.SetPubkey(new String(serverPubKey, StandardCharsets.UTF_8));
+        // 3. 尝试连接ssl，并获取密钥secretKey
+        Conn sslConn=this.Dials(sslHost,sslPort);
+        if(sslConn==null){
+            return null;
+        }
+        try {
+            System.out.println("sslconn sk local: "+((TCPConn)sslConn).socketChannel.getLocalAddress());
+            System.out.println("sslconn sk remote: "+((TCPConn)sslConn).socketChannel.getRemoteAddress());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        String secretK=SSL.sslSetup(sslConn,key.GetPubkey(),key,serverK);
+        if(secretK==null){
+            return null;
+        }
+        // 1. 尝试连接TCP
+        SocketChannel sk=null;
+        try {
+            sk = SocketChannel.open();
+            sk.connect(new InetSocketAddress(host,port));
+            // 设置超时时间
+            sk.socket().setKeepAlive(true);
+            sk.socket().setSoTimeout(5000);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+        // 4. 返回一个TCPConn
+        return new TCPConn(sk,this.key,serverK,true,secretK,1);
+    }
+}