项目介绍
wu-lazy-cloud-network 是一款基于（wu-framework-parent）孵化出的项目，内部使用Lazy ORM操作数据库，主要功能是网络穿透，对于没有公网IP的服务进行公网IP映射 使用环境JDK17 Spring Boot 3.0.2
版本更新
1.2.2-JDK17-SNAPSHOT
【fix】修正流量计算保存两位小数
架构图
实现原理
服务端创建socket服务端绑定本地端口（用于客户端连接）
package wu.framework.lazy.cloud.heartbeat.server.netty.socket;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import wu.framework.lazy.cloud.heartbeat.server.netty.filter.NettyServerFilter;
public class NettyOnCloudNettyServerSocket {
private final EventLoopGroup bossGroup = new NioEventLoopGroup();
private final EventLoopGroup workerGroup = new NioEventLoopGroup();
private final NettyServerFilter nettyServerFilter;// 通道业务处理
private ChannelFuture channelFuture;
public NettyOnCloudNettyServerSocket(NettyServerFilter nettyServerFilter) {
this.nettyServerFilter = nettyServerFilter;
}
/**
* 启动服务端
*
* @throws Exception
*/
public void startServer(int serverPort) throws Exception {
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
// 给服务端channel设置属性
.option(ChannelOption.SO_BACKLOG, 128)
.childOption(ChannelOption.SO_KEEPALIVE, true)
.childHandler(nettyServerFilter)
;
channelFuture = b.bind(serverPort).sync();
channelFuture.addListener((ChannelFutureListener) channelFuture -> {
// 服务器已启动
});
channelFuture.channel().closeFuture().sync();
} finally {
shutdown();
// 服务器已关闭
}
}
public void shutdown() {
if (channelFuture != null) {
channelFuture.channel().close().syncUninterruptibly();
}
if ((bossGroup != null) && (!bossGroup.isShutdown())) {
bossGroup.shutdownGracefully();
}
if ((workerGroup != null) && (!workerGroup.isShutdown())) {
workerGroup.shutdownGracefully();
}
}
}
客户端通过class NettyClientSocket 连接服务端
package wu.framework.lazy.cloud.heartbeat.client.netty.socket;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import wu.framework.lazy.cloud.heartbeat.client.application.ClientNettyConfigApplication;
import wu.framework.lazy.cloud.heartbeat.client.netty.filter.NettyClientFilter;
import wu.framework.lazy.cloud.heartbeat.common.MessageType;
import wu.framework.lazy.cloud.heartbeat.common.NettyProxyMsg;
import wu.framework.lazy.cloud.heartbeat.common.adapter.ChannelTypeAdapter;
import wu.framework.lazy.cloud.heartbeat.common.advanced.HandleChannelTypeAdvanced;
import wu.framework.lazy.cloud.heartbeat.common.utils.ChannelAttributeKeyUtils;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
* 客户端连接服务端
*/
@Slf4j
public class NettyClientSocket {
private static final EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
/**
* 服务端host
*/
private final String inetHost;
/**
* 服务端端口
*/
private final int inetPort;
/**
* 当前客户端id
*/
@Getter
private final String clientId;
/**
* nacos配置信息处理应用
*/
@Getter
private final ClientNettyConfigApplication clientNettyConfigApplication;
private final List
public NettyClientSocket(String inetHost, int inetPort, String clientId, ClientNettyConfigApplication clientNettyConfigApplication, List
this.inetHost = inetHost;
this.inetPort = inetPort;
this.clientId = clientId;
this.clientNettyConfigApplication = clientNettyConfigApplication;
this.handleChannelTypeAdvancedList = handleChannelTypeAdvancedList;
}
public void newConnect2Server() throws InterruptedException {
newConnect2Server(inetHost, inetPort, clientId, clientNettyConfigApplication);
}
protected void newConnect2Server(String inetHost, int inetPort, String clientId, ClientNettyConfigApplication clientNettyConfigApplication) throws InterruptedException {
Bootstrap bootstrap = new Bootstrap();
bootstrap.group(eventLoopGroup)
.channel(NioSocketChannel.class)
.handler(new NettyClientFilter(new ChannelTypeAdapter(handleChannelTypeAdvancedList), this))
;
log.info("连接服务端IP:{},连接服务端端口:{}", inetHost, inetPort);
ChannelFuture future = bootstrap.connect(inetHost, inetPort);
Channel channel = future.channel();
log.info("使用的客户端ID:" + clientId);
future.addListener((ChannelFutureListener) futureListener -> {
if (futureListener.isSuccess()) {
log.info("连接服务端成功");
// 告诉服务端这条连接是client的连接
NettyProxyMsg nettyMsg = new NettyProxyMsg();
nettyMsg.setType(MessageType.REPORT_CLIENT_CONNECT_SUCCESS);
nettyMsg.setClientId(clientId);
nettyMsg.setData((clientId).getBytes());
ChannelAttributeKeyUtils.buildClientId(channel, clientId);
channel.writeAndFlush(nettyMsg);
// 在线
clientNettyConfigApplication.clientOnLine(clientId);
} else {
log.info("每隔2s重连....");
// 离线
clientNettyConfigApplication.clientOffLine(clientId);
futureListener.channel().eventLoop().schedule(() -> {
try {
newConnect2Server(inetHost, inetPort, clientId, clientNettyConfigApplication);
} catch (InterruptedException e) {
e.printStackTrace();
}
}, 2, TimeUnit.SECONDS);
}
});
}
/**
* 关闭连接
*/
public void shutdown() {
if ((eventLoopGroup != null) && (!eventLoopGroup.isShutdown())) {
eventLoopGroup.shutdownGracefully();
}
}
}
通过客户端与服务端建立的连接进行访客端口绑定
上述连接会形成一个channel，我们称之为通道（本文中简单叫**心跳通道**）
第一步 页面GUI进行新增访客端口而后将访客端口与客户端绑定（如果客户端已经启动，使用页面客户端下线触发第二步）
第二步 客户端与访客端口绑定后使用**心跳通道** 发送客户端告诉客户端，你帮我绑定你本地真实端口
第三步 访客访问，访客通过访客端口访问数据，此时访客通道打开截取访客发送的数据，然后将数据发送给客户真实通道，数据返回后再返回给访客通道
功能
1.内网穿透
2.服务端自主下发数据到客户端
3.流量监控
项目结构
模块版本描述wu-lazy-cloud-heartbeat-common1.2.2-JDK17-SNAPSHOT内网穿透公共模块（声明接口、枚举、常量、适配器、解析器）wu-lazy-cloud-heartbeat-client1.2.2-JDK17-SNAPSHOT客户端（支持二次开发）wu-lazy-cloud-heartbeat-server1.2.2-JDK17-SNAPSHOT服务端（支持二次开发）wu-lazy-cloud-network-ui1.2.2-JDK17-SNAPSHOT服务端页面wu-lazy-cloud-heartbeat-client-sample1.2.2-JDK17-SNAPSHOT客户端样例wu-lazy-cloud-heartbeat-server-sample1.2.2-JDK17-SNAPSHOT服务端样例
使用技术
框架版本描述spring-boot3.0.7springboot框架wu-framework-web1.2.2-JDK17-SNAPSHOTweb容器Lazy -ORM1.2.2-JDK17-SNAPSHOTORMmysql-connector-j8.0.33mysql驱动wu-authorization-server-platform-starter1.2.2-JDK17-SNAPSHOT用户授权体系
使用环境
IDEA
Mac、Windows
JAVA >=13
MAVEN
启动
docker启动
docker run -d -it -p 18080:18080 --name wu-lazy-cloud-heartbeat-server registry.cn-hangzhou.aliyuncs.com/wu-lazy/wu-lazy-cloud-heartbeat-server:1.2.2-JDK17-SNAPSHOT
http://127.0.0.1:18080/swagger-ui/index.html
源码启动
页面操作
启动项目后打开服务端界面
默认账号密码：admin/admin
初始化项目
添加角色
为用户授权
刷新页面
客户端管理（客户端会自动注册）
网络映射管理（修改后者新增需要映射的客户端）
访客端口池管理（服务器端需要开放的端口）
流量管理（每个客户端使用的流量）
相关链接
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