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问题：客户的服务都是内网的，不能直接访问外网；访问外网的话需要走kong网关才能出去。

会话存档官网说可以使用socket5、http方式拉取会话存档；我这边尝试了直接使用kong网关的ip和端口配置进去，是访问不了的

我后面就又尝试了使用nginx、squid 做正向代理的方式使用http方式访问，也是没有成功；这两种做代理服务器为什么不能成功，没有理解；有知道的朋友可以告诉我一下，有成功使用这两个做代理服务器拉取消息成功的朋友可以分享下经验。

搞一个socket5的代理服务器是可以成功，我没有试过，但是问过踩过坑的人说这种方式可行。

如果懒得麻烦再搭一个代理服务器，那就可以自己动手写一个简单的代理服务器搞定它。

大概的交互流程如下：

下面是全部的代码，拷过去，调一调应该就能用了

ForwardProxyApplication

import xxx.ProxyService;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;import javax.annotation.Resource;@SpringBootApplication
public class ForwardProxyApplication implements CommandLineRunner {@Resourceprivate ProxyService proxyService;public static void main(String[] args) {SpringApplication.run(ForwardProxyApplication.class, args);}@Overridepublic void run(String... args) throws Exception {proxyService.start(args);}
}

ProxyConfig

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;@Configuration
public class ProxyConfig {@Value("${socket.port}")public Integer socketPort;@Value("${proxy.host}")public String proxyHost;@Value("${proxy.port}")public Integer proxyPort;
}

ProxyService

import xxx.config.ProxyConfig;
import xxx.thread.ProxyHandleThread;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;import javax.annotation.Resource;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Objects;@Service
public class ProxyService {private static final Logger logger = LoggerFactory.getLogger(ProxyService.class);@Resourceprivate ProxyConfig proxyConfig;public void start(String[] args) {ServerSocket ss = null;try {ss = new ServerSocket(proxyConfig.socketPort);logger.info("Server running at http://0.0.0.0:{}", proxyConfig.socketPort);} catch (IOException e1) {e1.printStackTrace();}while (true) {try {assert ss != null;Socket socket = ss.accept();socket.setSoTimeout(1000 * 60);String line = "";InputStream is = socket.getInputStream();String tempHost = "", host;int port = 80;String type = null;OutputStream os = socket.getOutputStream();BufferedReader br = new BufferedReader(new InputStreamReader(is));int temp = 1;StringBuilder sb = new StringBuilder();while ((line = br.readLine()) != null) {logger.info(line + "-----------------");if (temp == 1) {  type = line.split(" ")[0];if (type == null) continue;}temp++;String[] s1 = line.split(": ");if (line.isEmpty()) {break;}for (int i = 0; i < s1.length; i++) {if (s1[i].equalsIgnoreCase("host")) {tempHost = s1[i + 1];}}sb.append(line).append("\r\n");line = null;}sb.append("\r\n"); if (tempHost.split(":").length > 1) {port = Integer.parseInt(tempHost.split(":")[1]);}host = tempHost.split(":")[0];Socket proxySocket = null;if (host != null && !host.equals("")) {// todo 这里最重要的host = proxyConfig.proxyHost;port = proxyConfig.proxyPort;proxySocket = new Socket(host, port);proxySocket.setSoTimeout(1000 * 60);OutputStream proxyOs = proxySocket.getOutputStream();InputStream proxyIs = proxySocket.getInputStream();if (Objects.requireNonNull(type).equalsIgnoreCase("connect")) {  os.write("HTTP/1.1 200 Connection Established\r\n\r\n".getBytes());os.flush();} else {proxyOs.write(sb.toString().getBytes(StandardCharsets.UTF_8));proxyOs.flush();}new ProxyHandleThread(is, proxyOs).start(); //监听客户端传来消息并转发给服务器new ProxyHandleThread(proxyIs, os).start(); //监听服务器传来消息并转发给客户端}} catch (IOException e) {e.printStackTrace();}}}
}

ProxyHandleThread

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketTimeoutException;public class ProxyHandleThread extends Thread {private final InputStream input;private final OutputStream output;public ProxyHandleThread(InputStream input, OutputStream output) {this.input = input;this.output = output;}@Overridepublic void run() {try {BufferedInputStream bis = new BufferedInputStream(input);byte[] buffer = new byte[1024];int length = -1;while ((length = bis.read(buffer)) != -1) {output.write(buffer, 0, length);length = -1;}output.flush();try {Thread.sleep(5000);     //不能执行完了，就把线程关掉，不然双方交互的数据还没有处理完，这里写了个睡眠 5s，可以酌情考虑} catch (InterruptedException e) {e.printStackTrace();}} catch (SocketTimeoutException e) {try {input.close();output.close();} catch (IOException e1) {e1.printStackTrace();}} catch (IOException e) {e.printStackTrace();} finally {try {input.close();output.close();} catch (IOException e) {e.printStackTrace();}}}
}

没有搞定的，可以加好友一起聊聊，请备注csdn加我的

感谢 https://blog.csdn.net/jumprn/article/details/90173852