HttpClient客户端网络编程——高可用、高并发

　　本文是HttpClient的学习博客，RestTemplate是基于HttpClient的封装，feign可基于HttpClient进行网络通信。

　　那么作为较底层的客户端网络编程框架，该怎么配置使其能高可用，高并发，可支持Https协议呢？通读本文也许你会有答案或者启发。

　　本文是Maven项目，基于Spring，在本Demo中使用了更方便的SpringBoot。

　　以后随着理解HttpClient更深入的时候会不定期更新本博客，也欢迎感兴趣的博友交流和讨论。

一、本文目录

　　1. 代码实现

　　2. 测试验证

　　3. 后记

二、代码实现

1. 项目依赖

 1 <dependency>
 2             <groupId>org.springframework.boot</groupId>
 3             <artifactId>spring-boot-starter</artifactId>
 4         </dependency>
 5 
 6         <!--httpclient-->
 7         <dependency>
 8             <groupId>org.apache.httpcomponents</groupId>
 9             <artifactId>httpclient</artifactId>
10             <version>4.5.12</version>
11         </dependency>
12 
13         <!--alibaba JSON-->
14         <dependency>
15             <groupId>com.alibaba</groupId>
16             <artifactId>fastjson</artifactId>
17             <version>1.2.70</version>
18         </dependency>
19 
20         <dependency>
21             <groupId>org.springframework.boot</groupId>
22             <artifactId>spring-boot-starter-test</artifactId>
23             <scope>test</scope>
24         </dependency>

pom.xml

2. 项目结构

3. 项目配置

 1 #HttpClient配置
 2 httpClient:
 3   #重试次数
 4   retryCount: 3
 5   #重启开关
 6   requestSentRetryEnabled: true
 7   #HttpClient连接池配置
 8   pool:
 9     #总连接数
10     maxTotal: 200
11     #每个路由默认连接数，某一个/每服务每次能并行接收的请求数量
12     defaultMaxPerRoute: 50
13     #Validate connections after 15 sec of inactivity  15000
14     validateAfterInactivity: 1000
15     #idle超时时间
16     idleTimeOut: 3
17     socketCfg:
18       #是否立即发送数据，设置为true会关闭Socket缓冲，默认为false
19       tcpNoDelay: true
20       #是否可以在一个进程关闭Socket后，即使它还没有释放端口，其它进程还可以立即重用端口
21       soReuseAddress: true
22       #接受数据的等待超时时间，单位ms
23       soTimeOut: 500
24       #关闭Socket时，要么发送完所有数据，要么等待60s后，就关闭连接，此时socket.close()是阻塞的
25       soLinger: 60
26       #开启监视TCP连接是否有效
27       soKeepAlive: true

application.yml

4. HttpClient客户端配置类

　　通过配置连接池管理对象PoolingHttpClientConnectionManager，设置两个重要参数maxTotal和defaultMaxPerRoute，和其它参数。本文参数配置参考官方文档httpcomponents-client-4.5.x，文档上面的参数更多更齐全，包括HttpConnectionFactory、DnsResolver、ConnectionConfig、RequestConfig、RequestConfig、HttpClientContext、设置代理。这些参数本文没有配置，使用HttpClient的默认配置，感兴趣想继续深入研究的可以去学习了解。BackoffManager可以在连接池处于闲暇时进行收缩，不过网络上资料较少，目前还没研究出怎么使用和配置。

  1 package com.example.httpclientdemo.common.config.http.client;
  2 
  3 import org.apache.http.config.Registry;
  4 import org.apache.http.config.RegistryBuilder;
  5 import org.apache.http.config.SocketConfig;
  6 import org.apache.http.conn.socket.ConnectionSocketFactory;
  7 import org.apache.http.conn.socket.PlainConnectionSocketFactory;
  8 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
  9 import org.apache.http.impl.client.*;
 10 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
 11 import org.apache.http.ssl.SSLContexts;
 12 import org.springframework.beans.factory.annotation.Value;
 13 import org.springframework.context.annotation.Bean;
 14 import org.springframework.context.annotation.Configuration;
 15 
 16 import java.util.concurrent.TimeUnit;
 17 
 18 /**
 19  * HttpClient客户端配置类
 20  *
 21  * @author 复姓江山
 22  * @date 2021/02/08
 23  */
 24 @Configuration
 25 public class HttpClientConfig {
 26 
 27     /**
 28      * closeableHttpClient连接对象，支持HTTPS使用SSL套接层
 29      *
 30      * @param httpClientPoolManager   HttpClient连接池管理对象
 31      * @param retryCount              重试次数
 32      * @param requestSentRetryEnabled 重启开关
 33      * @return closeableHttpClient连接对象
 34      */
 35     @Bean
 36     public CloseableHttpClient closeableHttpClient(final PoolingHttpClientConnectionManager httpClientPoolManager,
 37                                                    @Value("${httpClient.retryCount}") final int retryCount,
 38                                                    @Value("${httpClient.requestSentRetryEnabled}") final
 39                                                    boolean requestSentRetryEnabled) {
 40 
 41         return HttpClients.custom()
 42                 .setDefaultCookieStore(new BasicCookieStore())
 43                 .setDefaultCredentialsProvider(new BasicCredentialsProvider())
 44                 .setConnectionManager(httpClientPoolManager)
 45                 .setRetryHandler(new DefaultHttpRequestRetryHandler(retryCount, requestSentRetryEnabled))
 46                 .build();
 47     }
 48 
 49     /**
 50      * 默认socket configuration
 51      *
 52      * @param tcpNoDelay     是否立即发送数据，设置为true会关闭Socket缓冲，默认为false
 53      * @param soReuseAddress 是否可以在一个进程关闭Socket后，即使它还没有释放端口，其它进程还可以立即重用端口
 54      * @param soTimeOut      接受数据的等待超时时间，单位ms
 55      * @param soLinger       关闭Socket时，要么发送完所有数据，要么等待60s后，就关闭连接，此时socket.close()是阻塞的
 56      * @param soKeepAlive    开启监视TCP连接是否有效
 57      * @return 默认socket configuration
 58      */
 59     @Bean
 60     public SocketConfig defaultSocketConfig(@Value("${httpClient.pool.socketCfg.tcpNoDelay}") final boolean tcpNoDelay,
 61                                             @Value("${httpClient.pool.socketCfg.soReuseAddress}") final boolean soReuseAddress,
 62                                             @Value("${httpClient.pool.socketCfg.soTimeOut}") final int soTimeOut,
 63                                             @Value("${httpClient.pool.socketCfg.soLinger}") final int soLinger,
 64                                             @Value("${httpClient.pool.socketCfg.soKeepAlive}") final boolean soKeepAlive) {
 65         return SocketConfig.custom()
 66                 .setTcpNoDelay(tcpNoDelay)
 67                 .setSoReuseAddress(soReuseAddress)
 68                 .setSoTimeout(soTimeOut)
 69                 .setSoLinger(soLinger)
 70                 .setSoKeepAlive(soKeepAlive).build();
 71     }
 72 
 73     /**
 74      * HttpClient连接池管理对象
 75      *
 76      * @param maxTotal                总连接数
 77      * @param defaultMaxPerRoute      每个路由默认连接数，某一个/每服务每次能并行接收的请求数量
 78      * @param validateAfterInactivity 一次连接保留时长,单位s
 79      * @param idleTimeOut             idle超时时间
 80      * @param defaultSocketConfig     默认socket configuration
 81      * @return HttpClient连接池管理对象
 82      */
 83     @Bean
 84     public PoolingHttpClientConnectionManager httpClientPoolManager(
 85             @Value("${httpClient.pool.maxTotal}") final int maxTotal,
 86             @Value("${httpClient.pool.defaultMaxPerRoute}") final int defaultMaxPerRoute,
 87             @Value("${httpClient.pool.validateAfterInactivity}") final int validateAfterInactivity,
 88             @Value("${httpClient.pool.validateAfterInactivity}") final long idleTimeOut,
 89             final SocketConfig defaultSocketConfig) {
 90         Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
 91                 .register("http", PlainConnectionSocketFactory.INSTANCE)
 92                 .register("https", new SSLConnectionSocketFactory(SSLContexts.createSystemDefault()))
 93                 .build();
 94         PoolingHttpClientConnectionManager poolManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
 95         poolManager.setMaxTotal(maxTotal);
 96         poolManager.setDefaultMaxPerRoute(defaultMaxPerRoute);
 97         poolManager.setValidateAfterInactivity(validateAfterInactivity);
 98         poolManager.closeIdleConnections(idleTimeOut, TimeUnit.SECONDS);
 99         poolManager.setDefaultSocketConfig(defaultSocketConfig);
100         return poolManager;
101     }
102 
103 }

HttpClientConfig.java

5. HttpClient工具类

  1 package com.example.httpclientdemo.common.utils.http.client;
  2 
  3 import org.apache.http.HttpEntity;
  4 import org.apache.http.client.methods.*;
  5 import org.apache.http.impl.client.CloseableHttpClient;
  6 import org.apache.http.impl.execchain.RequestAbortedException;
  7 
  8 import java.io.*;
  9 import java.util.stream.Collectors;
 10 
 11 /**
 12  * HttpClient工具类
 13  *
 14  * @author 复姓江山
 15  * @date 2021/02/08
 16  */
 17 public final class HttpClientUtils {
 18 
 19     /**
 20      * header的Content-Type键
 21      */
 22     public final static String HEADER_CONTENT_TYPE = "Content-Type";
 23 
 24     /**
 25      * R3C默认Content_Type
 26      */
 27     public final static String R3C_DEFAULT_CONTENT_TYPE = "application/vnd.api+json";
 28 
 29     /**
 30      * Authorization
 31      */
 32     public final static String HEADER_AUTHORIZATION = "Authorization";
 33 
 34     private HttpClientUtils() {
 35 
 36     }
 37 
 38     /**
 39      * httpClient的响应实体
 40      *
 41      * @param httpClient httpClient对象
 42      * @param request    请求对象
 43      * @return 响应实体
 44      * @throws IOException IO异常
 45      */
 46     private static CloseableHttpResponse httpResponse(CloseableHttpClient httpClient,
 47                                                       HttpUriRequest request) throws IOException {
 48         return httpClient.execute(request);
 49     }
 50 
 51     /**
 52      * get请求
 53      *
 54      * @param httpClient httpClient对象
 55      * @param request    请求对象
 56      * @return 响应实体
 57      * @throws IOException IO异常
 58      */
 59     public static CloseableHttpResponse get(CloseableHttpClient httpClient, HttpUriRequest request) throws IOException {
 60         assert HttpGet.METHOD_NAME.equals(request.getMethod());
 61         return HttpClientUtils.httpResponse(httpClient, request);
 62     }
 63 
 64     /**
 65      * post请求
 66      *
 67      * @param httpClient httpClient对象
 68      * @param request    请求对象
 69      * @return 响应实体
 70      * @throws IOException IO异常
 71      */
 72     public static CloseableHttpResponse post(CloseableHttpClient httpClient, HttpUriRequest request) throws IOException {
 73         assert HttpPost.METHOD_NAME.equals(request.getMethod());
 74         return HttpClientUtils.httpResponse(httpClient, request);
 75     }
 76 
 77     /**
 78      * post或patch请求
 79      *
 80      * @param httpClient httpClient对象
 81      * @param request    请求对象
 82      * @return 响应实体
 83      * @throws IOException IO异常
 84      */
 85     public static CloseableHttpResponse postOrPatch(CloseableHttpClient httpClient, HttpUriRequest request) throws IOException {
 86         if (request instanceof HttpPost) {
 87             assert HttpPost.METHOD_NAME.equals(request.getMethod());
 88         } else if (request instanceof HttpPatch) {
 89             assert HttpPatch.METHOD_NAME.equals(request.getMethod());
 90         } else {
 91             throw new RequestAbortedException("Not post or patch.");
 92         }
 93         return HttpClientUtils.httpResponse(httpClient, request);
 94     }
 95 
 96     /**
 97      * patch请求
 98      *
 99      * @param httpClient httpClient对象
100      * @param request    请求对象
101      * @return 响应实体
102      * @throws IOException IO异常
103      */
104     public static CloseableHttpResponse patch(CloseableHttpClient httpClient, HttpUriRequest request) throws IOException {
105         assert HttpPatch.METHOD_NAME.equals(request.getMethod());
106         return HttpClientUtils.httpResponse(httpClient, request);
107     }
108 
109     /**
110      * httpClient的HttpEntity
111      *
112      * @param response 响应实体
113      * @return HttpEntity
114      */
115     public static HttpEntity httpEntity(final CloseableHttpResponse response) {
116         return response.getEntity();
117     }
118 
119 
120     /**
121      * 返回状态行代码
122      *
123      * @param response 响应实体
124      * @return 状态行代码
125      */
126     public static int getStatusCode(final CloseableHttpResponse response) {
127         return response.getStatusLine().getStatusCode();
128     }
129 
130     /**
131      * 获取ContentType
132      *
133      * @param httpEntity HttpEntity
134      * @return ContentType
135      */
136     public static String getContentType(final HttpEntity httpEntity) {
137         return httpEntity.getContentType().getValue();
138     }
139 
140     /**
141      * 获取ContentEncoding
142      *
143      * @param httpEntity HttpEntity
144      * @return ContentEncoding
145      */
146     public static String getContentEncoding(final HttpEntity httpEntity) {
147         return httpEntity.getContentEncoding().getValue();
148     }
149 
150     /**
151      * 获取响应体对象InputStream
152      *
153      * @param httpEntity HttpEntity
154      * @return 获取响应体对象InputStream
155      * @throws IOException IO异常
156      */
157     public static InputStream getContent(final HttpEntity httpEntity) throws IOException {
158         return httpEntity.getContent();
159     }
160 
161     /**
162      * 获取响应体对象的字符串
163      *
164      * @param inputStream InputStream
165      * @return 获取响应体对象InputStream
166      * @throws IOException IO异常
167      */
168     public static String getContentString(final InputStream inputStream) throws IOException {
169         return new BufferedReader(new InputStreamReader(inputStream))
170                 .lines().parallel().collect(Collectors.joining(System.lineSeparator()));
171     }
172 
173     /**
174      * 获取响应体对象的字符串
175      *
176      * @param httpEntity HttpEntity
177      * @return 获取响应体对象InputStream
178      * @throws IOException IO异常
179      */
180     public static String getContentString(final HttpEntity httpEntity) throws IOException {
181         return new BufferedReader(new InputStreamReader(HttpClientUtils.getContent(httpEntity)))
182                 .lines().parallel().collect(Collectors.joining(System.lineSeparator()));
183     }
184 
185     /**
186      * 字符串转InputStream
187      *
188      * @param str 字符串
189      * @return inputStream
190      */
191     public static InputStream stringTransferToInputStream(String str) {
192         return new ByteArrayInputStream(str.getBytes());
193     }
194 
195     /**
196      * 设置默认的Content-Type
197      *
198      * @param request http请求对象
199      */
200     public static void setDefaultContentType(HttpUriRequest request) {
201         request.setHeader(HttpClientUtils.HEADER_CONTENT_TYPE, HttpClientUtils.R3C_DEFAULT_CONTENT_TYPE);
202     }
203 
204     /**
205      * 设置Authorization
206      *
207      * @param request http请求对象
208      * @param token   token
209      */
210     public static void setAuthorization(HttpUriRequest request, String token) {
211         request.setHeader(HttpClientUtils.HEADER_AUTHORIZATION, token);
212     }
213 
214     /**
215      * 设置默认请求头
216      *
217      * @param request http请求对象
218      * @param token   token
219      */
220     public static void setDefaultHeader(HttpUriRequest request, String token) {
221         HttpClientUtils.setDefaultContentType(request);
222         HttpClientUtils.setAuthorization(request, token);
223     }
224 
225     /**
226      * 关闭连接
227      *
228      * @param response    response响应对象
229      * @param inputStream inputStream
230      */
231     public static void close(CloseableHttpResponse response, InputStream inputStream) throws IOException {
232         if (inputStream != null) {
233             inputStream.close();
234         }
235         if (response != null) {
236             response.close();
237         }
238     }
239 
240 
241 }

HttpClientUtils.java

6. HttpClient业务接口及其实现

 1 package com.example.httpclientdemo.biz.service;
 2 
 3 /**
 4  * HttpClient业务接口类
 5  *
 6  * @author 复姓江山
 7  * @date 2021/02/08
 8  */
 9 public interface HttpClientService {
10     /**
11      * get请求
12      *
13      * @param url 请求地址
14      */
15     void requestGet(String url);
16 
17     /**
18      * post请求
19      *
20      * @param url 请求地址
21      * @param obj 请求对象
22      */
23     void requestPost(String url, Object obj);
24 }

HttpClientService.java

 1 package com.example.httpclientdemo.biz.service.impl;
 2 
 3 import com.example.httpclientdemo.biz.provider.HttpClientProvider;
 4 import com.example.httpclientdemo.biz.service.HttpClientService;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Service;
 7 
 8 /**
 9  * HttpClient业务接口实现类
10  *
11  * @author 复姓江山
12  * @date 2021/02/08
13  */
14 @Service
15 public class HttpClientServiceImpl implements HttpClientService {
16 
17     @Autowired
18     private HttpClientProvider httpClientProvider;
19 
20 
21     @Override
22     public void requestGet(String url) {
23         httpClientProvider.requestGet(url);
24     }
25 
26     @Override
27     public void requestPost(String url, Object obj) {
28         httpClientProvider.requestPost(url, obj);
29     }
30 }

HttpClientServiceImpl.java

7. HttpClient业务支撑接口及其实现

　　为什么会加个业务支撑接口呢？常见的分层结构或分层架构（控制层、业务层和数据访问层——分层结构，或表示层（UI）、业务逻辑层（BLL）和数据访问层——分层架构），在此基础上增加provder是因为多层封装与隔离，HttpClient是作为客户端请求其它系统服务，请求参数与相应参数及异常处理应与本项目进行一定隔离，如果把HttpClient客户端深度耦合到业务层中，到对方服务器变动时，就会影响本系统的核心业务逻辑。而增加了封装与隔离后，影响的只是provider层，系统本身的核心业务逻辑不会受到深层次的影响。在这我就稍微发散一下思维，比如定义一个MQ的接口，在使用的是Kafka，RabitMQ，ActiveMQ或者RocketMQ，不管怎么变更MQ，系统业务代码依赖的是MQ的接口，丝毫不会受到影响。所以编程原则里有一条：面向接口编程，面向抽象编程。

 1 package com.example.httpclientdemo.biz.provider;
 2 
 3 /**
 4  * HttpClient业务支撑接口类
 5  *
 6  * @author 复姓江山
 7  * @date 2021/02/08
 8  */
 9 public interface HttpClientProvider {
10 
11     /**
12      * get请求
13      *
14      * @param url 请求地址
15      */
16     void requestGet(String url);
17 
18     /**
19      * post请求
20      *
21      * @param url 请求地址
22      * @param obj 请求参数
23      */
24     void requestPost(String url, Object obj);
25 }

HttpClientProvider.java

 1 package com.example.httpclientdemo.biz.provider.impl;
 2 
 3 import com.alibaba.fastjson.JSON;
 4 import com.example.httpclientdemo.biz.provider.HttpClientProvider;
 5 import com.example.httpclientdemo.common.utils.http.client.HttpClientUtils;
 6 import org.apache.http.HttpEntity;
 7 import org.apache.http.client.methods.CloseableHttpResponse;
 8 import org.apache.http.client.methods.HttpGet;
 9 import org.apache.http.client.methods.HttpPost;
10 import org.apache.http.entity.StringEntity;
11 import org.apache.http.impl.client.CloseableHttpClient;
12 import org.slf4j.Logger;
13 import org.slf4j.LoggerFactory;
14 import org.springframework.stereotype.Service;
15 
16 import javax.annotation.Resource;
17 import java.io.IOException;
18 import java.io.InputStream;
19 import java.nio.charset.StandardCharsets;
20 
21 /**
22  * HttpClient业务支撑接口实现类
23  *
24  * @author 复姓江山
25  * @date 2021/02/08
26  */
27 @Service
28 public class HttpClientProviderImpl implements HttpClientProvider {
29     private final Logger logger = LoggerFactory.getLogger(this.getClass());
30 
31     @Resource(name = "closeableHttpClient")
32     private CloseableHttpClient httpClient;
33 
34 
35     @Override
36     public void requestGet(String url) {
37         HttpGet httpGet = new HttpGet(url);
38         CloseableHttpResponse response = null;
39         InputStream inputStream = null;
40 
41         try {
42             response = HttpClientUtils.get(httpClient, httpGet);
43             HttpEntity httpEntity = response.getEntity();
44             inputStream = HttpClientUtils.getContent(httpEntity);
45             String respString = HttpClientUtils.getContentString(inputStream);
46             logger.debug("respString: {}", respString);
47         } catch (Exception e) {
48             e.fillInStackTrace();
49         } finally {
50             try {
51                 HttpClientUtils.close(response, inputStream);
52             } catch (IOException ioException) {
53                 ioException.printStackTrace();
54             }
55         }
56     }
57 
58     @Override
59     public void requestPost(String url, Object obj) {
60         HttpPost httpPost = new HttpPost(url);
61         String jsonString = JSON.toJSONString(obj);
62         httpPost.setEntity(new StringEntity(jsonString, StandardCharsets.UTF_8));
63         CloseableHttpResponse response = null;
64         InputStream inputStream = null;
65         try {
66             response = HttpClientUtils.post(httpClient, httpPost);
67             HttpEntity httpEntity = response.getEntity();
68             inputStream = HttpClientUtils.getContent(httpEntity);
69             String respString = HttpClientUtils.getContentString(inputStream);
70             logger.debug("respString: {}", respString);
71         } catch (Exception e) {
72             e.fillInStackTrace();
73         } finally {
74             try {
75                 HttpClientUtils.close(response, inputStream);
76             } catch (IOException ioException) {
77                 ioException.printStackTrace();
78             }
79         }
80     }
81 }

HttpClientProviderImpl.java

　　8. HttpClient业务接口测试

　　通过运行单元测试类来测试接口，下文有详细的测试数据。

 1 package com.example.httpclientdemo.biz.service;
 2 
 3 import org.junit.jupiter.api.Test;
 4 import org.slf4j.Logger;
 5 import org.slf4j.LoggerFactory;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.boot.test.context.SpringBootTest;
 8 
 9 import java.util.concurrent.ExecutorService;
10 import java.util.concurrent.Executors;
11 import java.util.concurrent.atomic.AtomicInteger;
12 
13 import static org.junit.jupiter.api.Assertions.*;
14 
15 @SpringBootTest
16 class HttpClientServiceTest {
17     private final static Logger logger = LoggerFactory.getLogger(HttpClientServiceTest.class);
18 
19     @Autowired
20     private HttpClientService httpClientService;
21 
22     private static final String URL_GET_PATH = "https://www.baidu.com";
23 
24     private final AtomicInteger count = new AtomicInteger();
25 
26     /**
27      * workStealingPool
28      */
29     public final static ExecutorService workStealingPool = Executors.newWorkStealingPool(1<<6);
30 
31     @Test
32     void requestGet() throws InterruptedException {
33         final long startMils = System.currentTimeMillis();
34         final long statNanos = System.nanoTime();
35         for (int i = 0; i < 1000; i++) {
36             workStealingPool.execute(() -> {
37                 httpClientService.requestGet(URL_GET_PATH);
38                 logger.warn("requestGet, times: {}, betMils: {},betNanos: {}", count.getAndIncrement(),
39                         (System.currentTimeMillis() - startMils), (System.nanoTime() - statNanos));
40             });
41 
42         }
43         Thread.sleep(20000);
44     }
45 
46     @Test
47     void requestPost() {
48     }
49 }

HttpClientServiceTest.java

三、测试验证

　　本文测试方式可能不是那么专业与严谨，可是并不妨碍我们通过测试数据看出些原理，总结出些规律，也许有些片面，但可看出些趋势。

1. 运行日志

 1 main 2021-02-09 14:09:34,963 DEBUG (PoolingHttpClientConnectionManager.java:267)- Connection request: [route: {s}->https://www.baidu.com:443][total available: 0; route allocated: 0 of 50; total allocated: 0 of 200]
 2 main 2021-02-09 14:09:34,978 DEBUG (PoolingHttpClientConnectionManager.java:312)- Connection leased: [id: 0][route: {s}->https://www.baidu.com:443][total available: 0; route allocated: 1 of 50; total allocated: 1 of 200]
 3 main 2021-02-09 14:09:34,980 DEBUG (MainClientExec.java:234)- Opening connection {s}->https://www.baidu.com:443
 4 main 2021-02-09 14:09:34,994 DEBUG (DefaultHttpClientConnectionOperator.java:139)- Connecting to www.baidu.com/14.215.177.38:443
 5 main 2021-02-09 14:09:34,994 DEBUG (SSLConnectionSocketFactory.java:366)- Connecting socket to www.baidu.com/14.215.177.38:443 with timeout 0
 6 main 2021-02-09 14:09:35,101 DEBUG (SSLConnectionSocketFactory.java:430)- Enabled protocols: [TLSv1, TLSv1.1, TLSv1.2]
 7 main 2021-02-09 14:09:35,101 DEBUG (SSLConnectionSocketFactory.java:431)- Enabled cipher suites:[TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_RSA_WITH_AES_256_CBC_SHA256, TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384, TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384, TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, TLS_DHE_DSS_WITH_AES_256_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_DSS_WITH_AES_256_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256, TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, TLS_RSA_WITH_AES_256_GCM_SHA384, TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, TLS_DHE_DSS_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256, TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
 8 main 2021-02-09 14:09:35,102 DEBUG (SSLConnectionSocketFactory.java:435)- Starting handshake
 9 main 2021-02-09 14:09:35,250 DEBUG (SSLConnectionSocketFactory.java:465)- Secure session established
10 main 2021-02-09 14:09:35,250 DEBUG (SSLConnectionSocketFactory.java:466)-  negotiated protocol: TLSv1.2
11 main 2021-02-09 14:09:35,250 DEBUG (SSLConnectionSocketFactory.java:467)-  negotiated cipher suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
12 main 2021-02-09 14:09:35,250 DEBUG (SSLConnectionSocketFactory.java:475)-  peer principal: CN=baidu.com, O="Beijing Baidu Netcom Science Technology Co., Ltd", OU=service operation department, L=beijing, ST=beijing, C=CN
13 main 2021-02-09 14:09:35,251 DEBUG (SSLConnectionSocketFactory.java:484)-  peer alternative names: [baidu.com, baifubao.com, www.baidu.cn, www.baidu.com.cn, mct.y.nuomi.com, apollo.auto, dwz.cn, *.baidu.com, *.baifubao.com, *.baidustatic.com, *.bdstatic.com, *.bdimg.com, *.hao123.com, *.nuomi.com, *.chuanke.com, *.trustgo.com, *.bce.baidu.com, *.eyun.baidu.com, *.map.baidu.com, *.mbd.baidu.com, *.fanyi.baidu.com, *.baidubce.com, *.mipcdn.com, *.news.baidu.com, *.baidupcs.com, *.aipage.com, *.aipage.cn, *.bcehost.com, *.safe.baidu.com, *.im.baidu.com, *.baiducontent.com, *.dlnel.com, *.dlnel.org, *.dueros.baidu.com, *.su.baidu.com, *.91.com, *.hao123.baidu.com, *.apollo.auto, *.xueshu.baidu.com, *.bj.baidubce.com, *.gz.baidubce.com, *.smartapps.cn, *.bdtjrcv.com, *.hao222.com, *.haokan.com, *.pae.baidu.com, *.vd.bdstatic.com, click.hm.baidu.com, log.hm.baidu.com, cm.pos.baidu.com, wn.pos.baidu.com, update.pan.baidu.com]
14 main 2021-02-09 14:09:35,251 DEBUG (SSLConnectionSocketFactory.java:488)-  issuer principal: CN=GlobalSign Organization Validation CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE
15 main 2021-02-09 14:09:35,254 DEBUG (DefaultHttpClientConnectionOperator.java:146)- Connection established 192.168.100.24:63820<->14.215.177.38:443
16 main 2021-02-09 14:09:35,255 DEBUG (MainClientExec.java:255)- Executing request GET / HTTP/1.1
17 main 2021-02-09 14:09:35,255 DEBUG (MainClientExec.java:260)- Target auth state: UNCHALLENGED
18 main 2021-02-09 14:09:35,255 DEBUG (MainClientExec.java:266)- Proxy auth state: UNCHALLENGED
19 main 2021-02-09 14:09:35,257 DEBUG (LoggingManagedHttpClientConnection.java:133)- http-outgoing-0 >> GET / HTTP/1.1
20 main 2021-02-09 14:09:35,257 DEBUG (LoggingManagedHttpClientConnection.java:136)- http-outgoing-0 >> Host: www.baidu.com
21 main 2021-02-09 14:09:35,257 DEBUG (LoggingManagedHttpClientConnection.java:136)- http-outgoing-0 >> Connection: Keep-Alive
22 main 2021-02-09 14:09:35,257 DEBUG (LoggingManagedHttpClientConnection.java:136)- http-outgoing-0 >> User-Agent: Apache-HttpClient/4.5.12 (Java/1.8.0_161)
23 main 2021-02-09 14:09:35,257 DEBUG (LoggingManagedHttpClientConnection.java:136)- http-outgoing-0 >> Accept-Encoding: gzip,deflate
24 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "GET / HTTP/1.1[\r][\n]"
25 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "Host: www.baidu.com[\r][\n]"
26 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "Connection: Keep-Alive[\r][\n]"
27 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "User-Agent: Apache-HttpClient/4.5.12 (Java/1.8.0_161)[\r][\n]"
28 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "Accept-Encoding: gzip,deflate[\r][\n]"
29 main 2021-02-09 14:09:35,258 DEBUG (Wire.java:73)- http-outgoing-0 >> "[\r][\n]"
30 main 2021-02-09 14:09:35,300 DEBUG (Wire.java:73)- http-outgoing-0 << "HTTP/1.1 200 OK[\r][\n]"
31 main 2021-02-09 14:09:35,301 DEBUG (Wire.java:73)- http-outgoing-0 << "Content-Encoding: gzip[\r][\n]"
32 main 2021-02-09 14:09:35,301 DEBUG (Wire.java:73)- http-outgoing-0 << "Content-Length: 1145[\r][\n]"
33 main 2021-02-09 14:09:35,301 DEBUG (Wire.java:73)- http-outgoing-0 << "Content-Type: text/html[\r][\n]"
34 main 2021-02-09 14:09:35,301 DEBUG (Wire.java:73)- http-outgoing-0 << "Server: bfe[\r][\n]"
35 main 2021-02-09 14:09:35,301 DEBUG (Wire.java:73)- http-outgoing-0 << "Date: Tue, 09 Feb 2021 06:09:34 GMT[\r][\n]"
36 main 2021-02-09 14:09:35,302 DEBUG (Wire.java:73)- http-outgoing-0 << "[\r][\n]"
37 main 2021-02-09 14:09:35,302 DEBUG (Wire.java:73)- http-outgoing-0 << "[0x1f][0x8b][0x8][0x0][0x0][0x0][0x0][0x0][0x0][0xff][0x94]V[[0x8f][0xd4][0xb6][0x17]G[0xe2];[0x98][0xfc][0xb5][0xbb] 4[0xe3][0xb9][0x8][0xc1]7[0x9][0xda]nABH[0x5][0x15]V*O#[0xc7]v[0x12][0xb3][0x89]mlg[0xc2][0xf0][0xd4][0x95]J[0xd5][0xaa][0xa5][0xb4][0xa2][0x17]Q*[0xb5][0xaa]Z[0xb6][0xf][0x95][0xa0]*R[0xd1]R[0xe0][0xcb]L[0xd8][0xdd][0xa7]~[0x85][0xca]If[0xe7][\n]"
38 main 2021-02-09 14:09:35,302 DEBUG (Wire.java:73)- http-outgoing-0 << "[0xa8][0xf3][0x12][0xfb][0xf8][0x9c][0xdf][0xf9][0x9d][0x9b]=[0xee][0xb1]w/m\[0xbd]v[0xf9][0x1c][0x88]M[0x9a][0xf8]G[0x8f][0xb8][0xc7][0x1a][0x8d]+W[0xd7][0xaf]n^[0x1][0x97].6[0x1a][0xbe][[0xca][0x81][0x1b]SD|7[0xa5][0x6][0x81][0xd8][0x18][0xd9][0xa0]72[0xd6][0xf7][0xb0][0xe0][0x86]r[0xd3]0[0x3]IA[0xbd][0xf1][0xc][0xbd]i[0xa0]5[[0xc3]1R[0x9a][0x1a]/3a[0xe3][0xcc][0xbc][0xf5][0x7][0x8d][0xcd][0xf5][0xc6][0x86]H%2,H[0xc6][0x0][0x17][0xce]y[0xe7]HDk[0x83][0x91][0x14]%9[0x1a]h[0xc0]QJ=EC[0xaa][0x14]U[0xbe][0x9b]0[0xbe][0x5][0x14]M<m[0x6][0x9][0xd5]1[0xa5][0x6]X6[0x15][0xb][0xac]5[0x88][0x15][\r]=[0xeb]U[0xaf]B[0xa8]u[0xbb][0x19][0x10]m[0x90]a[0xb8][0x89]E[\n]"
39 main 2021-02-09 14:09:35,302 DEBUG (Wire.java:73)- http-outgoing-0 << "O[0xd1][0xf7][0xda][0xc1][0xf5][0x1b]g[0xd6][0xd7]7[0xaf][0xa5][0x9d][[0x91][0xb8][0xd6][0xbd][0x8][0x15][0xcc][0xf3][0x1c]b[0x84]c[\n]"
40 main 2021-02-09 14:09:35,302 DEBUG (Wire.java:73)- http-outgoing-0 << "[0x3]"[0xd4]-[0x18] F[0xb2]f[0xca]x[0x13]k[0xed][0xbb][0x86][0x99][0x84][0xfa]{[0xf7]_[0x14][0xbb][0xf][0x87]O?[0x1c]>[0xfd][0xec][0x9f][0xbf]?[0x1f]>[0xff][0xa9]x[0xfc][0xc7][0xde][0x8f][0xbf][0x1e]l[0xdf]sa[0xa5][0xe2][0xc2]2q[0xc0][\r][0x4][0x19][0x0]K[0xd6][0xfb]_[0xab][0xd5]ja[0xec][0x3][0x97][0xb0]>`[0xc4][0xcb][0x15][0x92][0x92][0xaa][0xb1][0xa0]6[0xb1];[0x9c] [0xad]KAoZ[0xad]:[0xd0][0xbd]P[0xa8]t[0x81][0xa8]7[0x7][0x9a]D>pY[0x1a][0x81][0x98][0x11][0x1a][\n]"
41 main 2021-02-09 14:09:35,303 DEBUG (Wire.java:73)- http-outgoing-0 << "[0x9c]i[0xcf][0xa8][0x8c][0x2][0xad][0xb0][0x7]m[0xbc][0xcd]*F[0x9b][0x14][0x96]F0 [0xbd]DD[0xa2][0xdd][0x94]<[0x2]9#&[0xf6]:[0xa7][ [0xa6],[0x8a][0x8d][0xd7][0xee][0xfc][0xdf][0x7].$[0xac][0xef][0x3][0xd7]:[0xb4].[0xca]oY[0x9f][0x10] l[0x98][0xe0]s[0xc8][0xba]f[0x19]Z[0xd2][0x8c][0xcb][0xac][0xae]V[0xcc][0x8][0xa1][0xbc]2.3[0xde][0xc3]"[0xa5][0xa0][0x8f][0x92][0x8c]z[0xed][0xd7][0xeb][0xb2][0x91]N[0xd5]b[0xaf][0xd5][0xb]k[0xb5]7[0xa8]([0xdd][0xef][0x5][0xf2][0xed].[0xad][0x1e]#7[0xdf][0xae]hx[0xad]S[0x86][0xef][0xbb]Z"^[0x87][0xef][0x4][0x11][0xd0]=&M/W[0x8e]_[0x3]0[0xe2]m[0xe5][0x95]iN[0xe][0xab][0xc9][0xa4][0xa9]`@[0x8a]n&[0x94]G[0xb6][0x10][0xa7]N[0x1][0x94][0x19][0x81]E*[0x13]j[0xa8]'[0xc2][0xb0][0x14]Tu=\[0xf9].[0xb4]N[0x17][0xb8][0xe][0xc][0x9f]t]r[0xd7]Y[0x90][0xb2][0x92][0x86][0xce]j[0xe6][0x93][0x1d]>k[0xef][0x80]9?[0xc0][0x85]u?[0xd6][0x9d]Q[0xea][0x16][0xcc]l[0xb2][0xd0]x W![0xe4]4[0xd7][0xe3][0xf6][0xa8][0xf3]v[0xbd]g[0x94]=[0xa8]=[0xa6][0x1c][0xf5][0xfd]W[0xdf]>>[0xf8][0xee][0x99][0xb][0xd1]4[0x84][0x9d]i[0xdb]a1[0x12][0xed]Nw[0x6][0xa3][0x12]N[0xa2]T[0x92]9[0x94]U[0x8]S$[0x17][0xf2]H[0x91][0x9c][0x4](~x\<x[0xb1][0x8][0xa0][0xbf][0xd0][0xbc][0xcf][0x8][0x15][0x93][0x0][0xfb];[0x1f][0x1f][0xfc][0xfc][0xd5]"[0x0][0xc3]h[0x80][0x16][0x82][0x94]'S O[0x9e][0x14]_[0xee]T \h[0xac][0x98]4sx[0xd3][0x83]W]c[0x89][0x88][0x18]oF,<[[0xae][0x96]Q*[0xd7][0x8c]L[0xbc][0xb4]Zf[0xa5][0xed]Rw}[0xa9]s~[0xa9]s~[\n]"
42 main 2021-02-09 14:09:35,303 DEBUG (Wire.java:73)- http-outgoing-0 << "a[0xa9][0x13].u[0xc3][0xf1]l.uI[0xfb][0x90]c[0x89]V3L[0x2][0xef][0xfe][0xb3][0xe2][0xf9]7[0x15]?8A[0xb0]^[0x10][0x81][0xb3][0x94]r[0xd3][0xcc][0x15]3[0xf4][0xf8][0xca][0x88][0xb8][0xf3][0x1f][0x98][0xd7][0xac]3o[0xe5]$[0xa0][0x1c][0xb]B7[0xdf][0xbf]`[0xdf][0x12][0xc1])7[0xc7]s[0xc6][0x89][0xc8][0x9b][0x89][0xc0][0xc8][0xde]CM[0x8b][0x12][0xcc][0x89]5E[\n]"
43 main 2021-02-09 14:09:35,303 DEBUG (Wire.java:73)- http-outgoing-0 << "[0xc7][0xc0][0xf3]<[0xe0]8[0xe0],p[0xce]:`[0x15]8[0xcb][0xce][0x89][0x93][0xc0][0x19][0xc7][0xea][0xb5][0xad]`[0xc5][0xa9][0xe2]uF[0x1];[0xa3][0x91]H[0x2]g"[0xe6][0x95][0x13]kG[0x8f][0x80][0x99][0x9f][0xb]g[0xcb]4[0x1b]g*[0x14][0x85][0x87][0x19][\r][0x14]cX[0x8c]r[0x1a]([0x6][0xca][0x7][0xce]s[0x8][0xd3]2A[0x83]U[0x10]$[0x2]o[0xad]9[0xfe][0xab][0x7]O[0x8a]_[0xbe][0x1f][0xee][0xee][0x14][0xf7][0xb6][0xeb][0x94]O[\r][0xdf][0xf4][0xc][0x86]fC[0xf0][0x99]m[0xee][0x3]W[0x96]oD<[0xd7]E[0xb1]H[0xe9][0x98][0xa4]_[0xdc][0xfe]s[0xb8][0xfb]Eu-,jb[0xa6]&[0x94][0xd7][0x3][0x91][0x19][0xf0][0x8e][0xdd][0xd7][0xc4][0xe4][0xc8][0x13][0x96][0xfe]2[0x16]r[0xb0][0xd6]i[0xb5]O/[0xf3]@[0xcb][0xb5]R[0xaf]Z[0xbe][0xb1][0x93]If[0x6][0xd0][0x1f]>[0xb9][0xf7][0xf5]o[0x15][0x91][0xe2][0xd3];[0xc5][0xcb][0xdb][0xfb][0x8f][0xca][0xeb][0xa1]B[0x98][0xe5]u[0x9d]!>`[0x13](ub[0xb1]l[0x84][0x94][0x92][0x0][0xe1]-[0xff][0xd5]Gw[0xf7]w[0xb6][0x8b][0xbb]w[0xe][0x1e]~2F[0x1a][0xee][0xfe]~a[0xe3][0xf2][0xfe][0xa3][0xed]V[0xb7][0xd5]>[0xdd]-[0xee][0xfe]5[0xf2]`[0x1f][0xd3][0xd7][0xbd][0x9e][0x91][0xb6][0xbd]:[\n]"
44 main 2021-02-09 14:09:35,303 DEBUG (Wire.java:87)- http-outgoing-0 << "yaA[0xa0][0xfd]K`[0xbf][0xf5]?[0xaf][0x3][0x0][0x0][0xff][0xff]0[0xc][0x81][0x9a][0x8b][0x9][0x0][0x0]"
45 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:122)- http-outgoing-0 << HTTP/1.1 200 OK
46 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:125)- http-outgoing-0 << Content-Encoding: gzip
47 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:125)- http-outgoing-0 << Content-Length: 1145
48 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:125)- http-outgoing-0 << Content-Type: text/html
49 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:125)- http-outgoing-0 << Server: bfe
50 main 2021-02-09 14:09:35,306 DEBUG (LoggingManagedHttpClientConnection.java:125)- http-outgoing-0 << Date: Tue, 09 Feb 2021 06:09:34 GMT
51 main 2021-02-09 14:09:35,310 DEBUG (MainClientExec.java:285)- Connection can be kept alive indefinitely
52 main 2021-02-09 14:09:35,316 DEBUG (HttpClientProviderImpl.java:46)- respString: <!DOCTYPE html>
53 <!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> <body link=#0000cc> <div id=wrapper> <div id=head> <div class=head_wrapper> <div class=s_form> <div class=s_form_wrapper> <div id=lg> <img hidefocus=true src=//www.baidu.com/img/bd_logo1.png width=270 height=129> </div> <form id=form name=f action=//www.baidu.com/s class=fm> <input type=hidden name=bdorz_come value=1> <input type=hidden name=ie value=utf-8> <input type=hidden name=f value=8> <input type=hidden name=rsv_bp value=1> <input type=hidden name=rsv_idx value=1> <input type=hidden name=tn value=baidu><span class="bg s_ipt_wr"><input id=kw name=wd class=s_ipt value maxlength=255 autocomplete=off autofocus=autofocus></span><span class="bg s_btn_wr"><input type=submit id=su value=百度一下 class="bg s_btn" autofocus></span> </form> </div> </div> <div id=u1> <a href=http://news.baidu.com name=tj_trnews class=mnav>新闻</a> <a href=https://www.hao123.com name=tj_trhao123 class=mnav>hao123</a> <a href=http://map.baidu.com name=tj_trmap class=mnav>地图</a> <a href=http://v.baidu.com name=tj_trvideo class=mnav>视频</a> <a href=http://tieba.baidu.com name=tj_trtieba class=mnav>贴吧</a> <noscript> <a href=http://www.baidu.com/bdorz/login.gif?login&amp;tpl=mn&amp;u=http%3A%2F%2Fwww.baidu.com%2f%3fbdorz_come%3d1 name=tj_login class=lb>登录</a> </noscript> <script>document.write('<a href="http://www.baidu.com/bdorz/login.gif?login&tpl=mn&u='+ encodeURIComponent(window.location.href+ (window.location.search === "" ? "?" : "&")+ "bdorz_come=1")+ '" name="tj_login" class="lb">登录</a>');
54                 </script> <a href=//www.baidu.com/more/ name=tj_briicon class=bri style="display: block;">更多产品</a> </div> </div> </div> <div id=ftCon> <div id=ftConw> <p id=lh> <a href=http://home.baidu.com>关于百度</a> <a href=http://ir.baidu.com>About Baidu</a> </p> <p id=cp>&copy;2017&nbsp;Baidu&nbsp;<a href=http://www.baidu.com/duty/>使用百度前必读</a>&nbsp; <a href=http://jianyi.baidu.com/ class=cp-feedback>意见反馈</a>&nbsp;京ICP证030173号&nbsp; <img src=//www.baidu.com/img/gs.gif> </p> </div> </div> </div> </body> </html>
55 main 2021-02-09 14:09:35,318 DEBUG (PoolingHttpClientConnectionManager.java:344)- Connection [id: 0][route: {s}->https://www.baidu.com:443] can be kept alive indefinitely
56 main 2021-02-09 14:09:35,318 DEBUG (LoggingManagedHttpClientConnection.java:88)- http-outgoing-0: set socket timeout to 0
57 main 2021-02-09 14:09:35,318 DEBUG (PoolingHttpClientConnectionManager.java:351)- Connection released: [id: 0][route: {s}->https://www.baidu.com:443][total available: 1; route allocated: 1 of 50; total allocated: 1 of 200]
58 main 2021-02-09 14:09:35,319 WARN (HttpClientServiceTest.java:80)- requestGet, times: 0, betMils: 403,betNanos: 402522300

httpClientLog

2. 综合比较

　　maxTotal:200

　　根据以上数据我们能看出什么呢？

　　在分析数据以前我先罗列一下电脑配置：

　　Windows 10 专业版

　　Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz 3.00 GHz 4核

　　16.0 GB

　　64 位

　　SSD 232.89 GB

　　首先根据本机硬件及系统配置，多线程可以提高系统的并发效率，但是也不是绝对的，大致在50个线程的时候效果较好。然后defaultMaxPerRoute参数也是50，即每个路由默认并行接受的请求数。因为本文的测试目标服务器是百度，百度服务器设置连接时间可无限期的保持“Connection can be kept alive indefinitely”，调节validateAfterInactivity参数，总的来说效果不是很大，当然需要排除网络请求的一些影响因素，比如拥塞、路由等情况，可根据下表的参数比较知道，即使相同的配置参数，不同时间点请求服务器，响应的时长也有差异，也就是说每一次的网络请求都是必然中的一次偶然情况。

3. 同参数比较

　　Threads: 50 

　　maxTotal: 200

　　defaultMaxPerRoute:50

　　validateAfterInactivity:1000

　　idleTimeOut:3

　　通过上表可以看出，每一次网络请求在同一网络情况下或相似网络情况下，响应的时长差距不大。但因为影响网络的因素众多，导致每次响应的时长都不一样。

 四、后记

　　暂时先分享到此，后期会有补充的，比如源码、架构等。