Java Code Examples for org.apache.http.impl.conn.PoolingHttpClientConnectionManager#setDefaultSocketConfig()

/**
 * 创建httpclient连接池，并初始化httpclient
 */
public void init() {
    try {
        SSLContext sslcontext = SSLContexts.custom().loadTrustMaterial(null,
                new TrustSelfSignedStrategy())
                .build();
        HostnameVerifier hostnameVerifier = SSLConnectionSocketFactory.getDefaultHostnameVerifier();
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                sslcontext, hostnameVerifier);
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.getSocketFactory())
                .register("https", sslsf)
                .build();
        httpClientConnectionManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
        // Increase max total connection to 200
        httpClientConnectionManager.setMaxTotal(maxTotalPool);
        // Increase default max connection per route to 20
        httpClientConnectionManager.setDefaultMaxPerRoute(maxConPerRoute);
        SocketConfig socketConfig = SocketConfig.custom().setSoTimeout(socketTimeout).build();
        httpClientConnectionManager.setDefaultSocketConfig(socketConfig);
    } catch (Exception e) {

    }
}
 

public SeedManager(final String joalConfFolder, final ObjectMapper mapper, final ApplicationEventPublisher publisher) throws IOException {
    this.isSeeding = false;
    this.joalFoldersPath = new JoalFoldersPath(Paths.get(joalConfFolder));
    this.torrentFileProvider = new TorrentFileProvider(joalFoldersPath);
    this.configProvider = new JoalConfigProvider(mapper, joalFoldersPath, publisher);
    this.bitTorrentClientProvider = new BitTorrentClientProvider(configProvider, mapper, joalFoldersPath);
    this.publisher = publisher;
    this.connectionHandler = new ConnectionHandler();


    final SocketConfig sc = SocketConfig.custom()
            .setSoTimeout(30000)
            .build();
    final PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
    connManager.setDefaultMaxPerRoute(100);
    connManager.setMaxTotal(200);
    connManager.setValidateAfterInactivity(1000);
    connManager.setDefaultSocketConfig(sc);
    this.httpClient = HttpClients.custom()
            .setConnectionTimeToLive(1, TimeUnit.MINUTES)
            .setConnectionManager(connManager)
            .setConnectionManagerShared(true)
            .build();
}
 

public HttpClientConnectionManager create(ApacheHttpClient.DefaultBuilder configuration,
                                          AttributeMap standardOptions) {
    ConnectionSocketFactory sslsf = getPreferredSocketFactory(configuration, standardOptions);

    PoolingHttpClientConnectionManager cm = new
            PoolingHttpClientConnectionManager(
            createSocketFactoryRegistry(sslsf),
            null,
            DefaultSchemePortResolver.INSTANCE,
            null,
            standardOptions.get(SdkHttpConfigurationOption.CONNECTION_TIME_TO_LIVE).toMillis(),
            TimeUnit.MILLISECONDS);

    cm.setDefaultMaxPerRoute(standardOptions.get(SdkHttpConfigurationOption.MAX_CONNECTIONS));
    cm.setMaxTotal(standardOptions.get(SdkHttpConfigurationOption.MAX_CONNECTIONS));
    cm.setDefaultSocketConfig(buildSocketConfig(standardOptions));

    return cm;
}
 

@Override
public HttpClientConnectionManager create(final HttpClientSettings settings) {
    ConnectionSocketFactory sslsf = getPreferredSocketFactory(settings);

    final PoolingHttpClientConnectionManager cm = new
            PoolingHttpClientConnectionManager(
            createSocketFactoryRegistry(sslsf),
            null,
            DefaultSchemePortResolver.INSTANCE,
            new DelegatingDnsResolver(settings.getDnsResolver()),
            settings.getConnectionPoolTTL(),
            TimeUnit.MILLISECONDS);

    cm.setValidateAfterInactivity(settings.getValidateAfterInactivityMillis());
    cm.setDefaultMaxPerRoute(settings.getMaxConnections());
    cm.setMaxTotal(settings.getMaxConnections());
    cm.setDefaultSocketConfig(buildSocketConfig(settings));
    cm.setDefaultConnectionConfig(buildConnectionConfig(settings));

    return cm;
}
 

private static PoolingHttpClientConnectionManager buildHttpClientManager(int socketTimeout)
{
    PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
    cm.setMaxTotal(3);
    cm.setDefaultMaxPerRoute(2);

    cm.setValidateAfterInactivity(1);

    cm.setDefaultSocketConfig(SocketConfig.custom()
            .setSoTimeout(socketTimeout)
            .setSoLinger(0)
            .setTcpNoDelay(true)
            .build());

    Runtime.getRuntime().addShutdownHook(new Thread()
    {
        @Override
        public void run()
        {
            cm.close();
        }
    });

    return cm;
}
 

private HttpClientConnectionManager createConnectionManager(final Http4FileSystemConfigBuilder builder,
        final FileSystemOptions fileSystemOptions) throws FileSystemException {
    final PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
    connManager.setMaxTotal(builder.getMaxTotalConnections(fileSystemOptions));
    connManager.setDefaultMaxPerRoute(builder.getMaxConnectionsPerHost(fileSystemOptions));

    final SocketConfig socketConfig =
            SocketConfig
            .custom()
            .setSoTimeout(builder.getSoTimeout(fileSystemOptions))
            .build();

    connManager.setDefaultSocketConfig(socketConfig);

    return connManager;
}
 

@Before
public void initializeClient() {
    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
    connectionManager.setMaxTotal(Math.max(1, MAX_THREADS / 10));
    connectionManager.setDefaultMaxPerRoute(connectionManager.getMaxTotal());
    connectionManager.setValidateAfterInactivity(10000);
    connectionManager.setDefaultSocketConfig(getDefaultSocketConfig());

    client = HttpClients.custom()
            .setConnectionManager(connectionManager)
            .setDefaultCookieStore(new BasicCookieStore())
            .setDefaultRequestConfig(getDefaultRequestConfig())
            .setRedirectStrategy(new CustomRedirectStrategy())
            .setRetryHandler(new DefaultHttpRequestRetryHandler(0, false))
            .build();
}
 

public void testConnectionPooling() throws IOException {
    PoolingHttpClientConnectionManager poolingHttpClientConnectionManager = new PoolingHttpClientConnectionManager();
    poolingHttpClientConnectionManager.setDefaultMaxPerRoute(5);
    poolingHttpClientConnectionManager.setMaxTotal(5);
    poolingHttpClientConnectionManager.setDefaultSocketConfig(SocketConfig.custom().setSoTimeout(1000 * 60).build());

    HttpClientBuilder clientBuilder = HttpClientBuilder.create()
            .setConnectionManager(poolingHttpClientConnectionManager);
    try (CloseableHttpClient httpClient = clientBuilder.build()) {
        for (int i = 0; i < 10; i++) {

            HttpGet httpget = new HttpGet("http://davmail.sourceforge.net/version.txt");
            try (CloseableHttpResponse response = httpClient.execute(httpget)) {
                System.out.println("Pool stats after execute: " + poolingHttpClientConnectionManager.getTotalStats());
                assertEquals(1, poolingHttpClientConnectionManager.getTotalStats().getLeased());
                assertEquals(0, poolingHttpClientConnectionManager.getTotalStats().getAvailable());
                String responseString = new BasicResponseHandler().handleResponse(response);
                System.out.println(responseString);
                System.out.println("Pool stats after response: " + poolingHttpClientConnectionManager.getTotalStats());
            }
            System.out.println("Pool stats after close response: " + poolingHttpClientConnectionManager.getTotalStats());
            assertEquals(0, poolingHttpClientConnectionManager.getTotalStats().getLeased());
            assertEquals(1, poolingHttpClientConnectionManager.getTotalStats().getAvailable());
        }
    }
    System.out.println("Pool stats after close httpClient: " + poolingHttpClientConnectionManager.getTotalStats());
    assertEquals(0, poolingHttpClientConnectionManager.getTotalStats().getLeased());
    assertEquals(0, poolingHttpClientConnectionManager.getTotalStats().getAvailable());
}
 

public  HttpClientConnectionManager createHttpClientConnectionManager() {
	SSLContext sslContext = null;
	try {
		sslContext = SSLContexts.custom().loadTrustMaterial(null, new TrustStrategy() {
			@Override
			public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
				return false;
			}
		}).build();
	} catch (Exception e) {
		throw new RuntimeException(e);
	}
	SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext,
			NoopHostnameVerifier.INSTANCE);
	Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
			.register("http", PlainConnectionSocketFactory.getSocketFactory()).register("https", sslSocketFactory)
			.build();
	PoolingHttpClientConnectionManager poolingHttpClientConnectionManager = new PoolingHttpClientConnectionManager(
			socketFactoryRegistry);
	// 最大连接数
	poolingHttpClientConnectionManager.setMaxTotal(httpClientConfig.getMaxTotal());
	// 单个站点最大连接数
	poolingHttpClientConnectionManager.setDefaultMaxPerRoute(httpClientConfig.getMaxPerRoute());
	// 长连接
	poolingHttpClientConnectionManager.setDefaultSocketConfig(
			SocketConfig.custom().setSoTimeout(httpClientConfig.getSocketTimeout()).setSoKeepAlive(true).build());
	// 连接不活跃多久检查毫秒 并不是100 % 可信
	poolingHttpClientConnectionManager.setValidateAfterInactivity(httpClientConfig.getValidateAfterInactivity());
	// 空闲扫描线程
	HttpClientIdleConnectionMonitor.registerConnectionManager(poolingHttpClientConnectionManager, httpClientConfig);
	return poolingHttpClientConnectionManager;
}
 

/**
 * Get a new CloseableHttpClient
 * 
 * @return CloseableHttpClient
 */
public static CloseableHttpClient newHttpClient() {
    final SocketConfig socketConfig = SocketConfig.custom()
            .setSoKeepAlive(Boolean.TRUE).setTcpNoDelay(Boolean.TRUE)
            .setSoTimeout(SOCKET_TIMEOUT_MS).build();

    final PoolingHttpClientConnectionManager manager = new PoolingHttpClientConnectionManager();
    manager.setDefaultMaxPerRoute(MAX_HOSTS);
    manager.setMaxTotal(MAX_HOSTS);
    manager.setDefaultSocketConfig(socketConfig);

    final RequestConfig requestConfig = RequestConfig.custom()
            .setConnectTimeout(CONNECTION_TIMEOUT_MS)
            .setCookieSpec(CookieSpecs.IGNORE_COOKIES)
            .setStaleConnectionCheckEnabled(Boolean.FALSE)
            .setSocketTimeout(SOCKET_TIMEOUT_MS).build();

    final CloseableHttpClient client = HttpClients
            .custom()
            .disableRedirectHandling()
            .setConnectionManager(manager)
            .setDefaultRequestConfig(requestConfig)
            .setConnectionReuseStrategy(
                    new DefaultConnectionReuseStrategy())
            .setConnectionBackoffStrategy(new DefaultBackoffStrategy())
            .setRetryHandler(
                    new DefaultHttpRequestRetryHandler(MAX_RETRIES, false))
            .setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy())
            .build();
    return client;
}
 

private static void init() {
    try {
        SSLContext sslContext =
                SSLContexts.custom()
                        .loadTrustMaterial(KeyStore.getInstance(KeyStore.getDefaultType()), new TrustStrategy() {
                            @Override
                            public boolean isTrusted(X509Certificate[] chain, String authType)
                                    throws CertificateException {
                                return true;
                            }
                        }).build();
        SSLConnectionSocketFactory sslSFactory =
                new SSLConnectionSocketFactory(sslContext);
        Registry<ConnectionSocketFactory> socketFactoryRegistry =
                RegistryBuilder.<ConnectionSocketFactory>create()
                        .register("http", PlainConnectionSocketFactory.INSTANCE).register("https", sslSFactory)
                        .build();

        PoolingHttpClientConnectionManager connManager =
                new PoolingHttpClientConnectionManager(socketFactoryRegistry);

        SocketConfig socketConfig = SocketConfig.custom().setSoTimeout(CommonConstant.TIMEOUT).setTcpNoDelay(true).build();
        connManager.setDefaultSocketConfig(socketConfig);

        ConnectionConfig connectionConfig =
                ConnectionConfig.custom().setMalformedInputAction(CodingErrorAction.IGNORE)
                        .setUnmappableInputAction(CodingErrorAction.IGNORE).setCharset(Consts.UTF_8).build();
        connManager.setDefaultConnectionConfig(connectionConfig);
        connManager.setMaxTotal(500);
        connManager.setDefaultMaxPerRoute(300);
        HttpRequestRetryHandler retryHandler = new HttpRequestRetryHandler() {
            @Override
            public boolean retryRequest(IOException exception, int executionCount, HttpContext context) {
                if (executionCount > 2) {
                    return false;
                }
                if (exception instanceof InterruptedIOException) {
                    return true;
                }
                if (exception instanceof ConnectTimeoutException) {
                    return true;
                }
                if (exception instanceof UnknownHostException) {
                    return true;
                }
                if (exception instanceof SSLException) {
                    return true;
                }
                HttpRequest request = HttpClientContext.adapt(context).getRequest();
                if (!(request instanceof HttpEntityEnclosingRequest)) {
                    return true;
                }
                return false;
            }
        };
        HttpClientBuilder httpClientBuilder =
                HttpClients.custom().setConnectionManager(connManager)
                        .setRetryHandler(retryHandler)
                        .setDefaultCookieStore(new BasicCookieStore()).setUserAgent(userAgent);
        if (proxy != null) {
            httpClientBuilder.setRoutePlanner(new DefaultProxyRoutePlanner(proxy)).build();
        }
        httpClient = httpClientBuilder.build();

        requestConfig = RequestConfig.custom().setSocketTimeout(CommonConstant.TIMEOUT).
                setConnectTimeout(CommonConstant.TIMEOUT).
                setConnectionRequestTimeout(CommonConstant.TIMEOUT).
                setCookieSpec(CookieSpecs.STANDARD).
                build();
    } catch (Exception e) {
        logger.error("Exception:", e);
    }
}
 

public CloseableHttpClient createSyncClient(boolean proxy)
        throws Exception {

    HttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory();
    HttpMessageWriterFactory<HttpRequest> requestWriterFactory = new DefaultHttpRequestWriterFactory();

    HttpConnectionFactory<HttpRoute, ManagedHttpClientConnection> connFactory = new ManagedHttpClientConnectionFactory(
            requestWriterFactory, responseParserFactory);

    SSLContext sslcontext = SSLContexts.createSystemDefault();

    Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
            .register("http", PlainConnectionSocketFactory.INSTANCE)
            .register("https", new SSLConnectionSocketFactory(sslcontext))
            .build();

    // Create a connection manager with custom configuration.
    PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(
            socketFactoryRegistry, connFactory);

    // Create socket configuration
    SocketConfig socketConfig = SocketConfig.custom()
            .setTcpNoDelay(true)
            .build();
    // Configure the connection manager to use socket configuration either
    // by default or for a specific host.
    connManager.setDefaultSocketConfig(socketConfig);
    connManager.setSocketConfig(new HttpHost("somehost", 80), socketConfig);
    // Validate connections after 1 sec of inactivity
    connManager.setValidateAfterInactivity(1000);

    // Create message constraints
    MessageConstraints messageConstraints = MessageConstraints.custom()
            .setMaxHeaderCount(200)
            .setMaxLineLength(2000)
            .build();
    // Create connection configuration
    ConnectionConfig connectionConfig = ConnectionConfig.custom()
            .setMalformedInputAction(CodingErrorAction.IGNORE)
            .setUnmappableInputAction(CodingErrorAction.IGNORE)
            .setCharset(Consts.UTF_8)
            .setMessageConstraints(messageConstraints)
            .build();
    // Configure the connection manager to use connection configuration either
    // by default or for a specific host.
    connManager.setDefaultConnectionConfig(connectionConfig);

    // Configure total max or per route limits for persistent connections
    // that can be kept in the pool or leased by the connection manager.
    connManager.setMaxTotal(poolSize);
    if (maxPerRoute > 0) {
        connManager.setDefaultMaxPerRoute(maxPerRoute);
    } else {
        connManager.setDefaultMaxPerRoute(10);
    }

    // Use custom cookie store if necessary.
    CookieStore cookieStore = new BasicCookieStore();
    // Use custom credentials provider if necessary.
    CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    // Create global request configuration
    RequestConfig defaultRequestConfig = RequestConfig.custom()
            .setConnectTimeout(connectTimeout)
            .setSocketTimeout(socketTimeout)
            .setConnectionRequestTimeout(connectionRequestTimeout)
            .setCookieSpec(CookieSpecs.DEFAULT)
            .setExpectContinueEnabled(true)
            .setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST))
            .setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC))
            .build();

    // Create an HttpClient with the given custom dependencies and configuration.
    CloseableHttpClient httpclient = HttpClients.custom()
            .setConnectionManager(connManager)
            .setDefaultCookieStore(cookieStore)
            .setDefaultCredentialsProvider(credentialsProvider)
            .setDefaultRequestConfig(defaultRequestConfig)
            .build();

    return httpclient;
}
 

private synchronized void prepare() {
  if (prepared.get()) {
    return;
  }
  Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
    .register("http", this.plainConnectionSocketFactory)
    .register("https", this.sslConnectionSocketFactory)
    .build();

  @SuppressWarnings("resource")
  PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
  connectionManager.setMaxTotal(this.maxTotalConn);
  connectionManager.setDefaultMaxPerRoute(this.maxConnPerHost);
  connectionManager.setDefaultSocketConfig(
    SocketConfig.copy(SocketConfig.DEFAULT)
      .setSoTimeout(this.soTimeout)
      .build()
  );

  this.idleConnectionMonitorThread = new IdleConnectionMonitorThread(
    connectionManager, this.idleConnTimeout, this.checkWaitTime);
  this.idleConnectionMonitorThread.setDaemon(true);
  this.idleConnectionMonitorThread.start();

  HttpClientBuilder httpClientBuilder = HttpClients.custom()
    .setConnectionManager(connectionManager)
    .setConnectionManagerShared(true)
    .setSSLSocketFactory(this.buildSSLConnectionSocketFactory())
    .setDefaultRequestConfig(
      RequestConfig.custom()
        .setSocketTimeout(this.soTimeout)
        .setConnectTimeout(this.connectionTimeout)
        .setConnectionRequestTimeout(this.connectionRequestTimeout)
        .build()
    )
    .setRetryHandler(this.httpRequestRetryHandler);

  if (StringUtils.isNotBlank(this.httpProxyHost)
    && StringUtils.isNotBlank(this.httpProxyUsername)) {
    // 使用代理服务器 需要用户认证的代理服务器
    CredentialsProvider provider = new BasicCredentialsProvider();
    provider.setCredentials(
      new AuthScope(this.httpProxyHost, this.httpProxyPort),
      new UsernamePasswordCredentials(this.httpProxyUsername,
        this.httpProxyPassword));
    httpClientBuilder.setDefaultCredentialsProvider(provider);
  }

  if (StringUtils.isNotBlank(this.userAgent)) {
    httpClientBuilder.setUserAgent(this.userAgent);
  }
  this.closeableHttpClient = httpClientBuilder.build();
  prepared.set(true);
}
 

private CloseableHttpClient getHttpClient() {
        //注册访问协议相关的Socket工厂
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", SSLConnectionSocketFactory.getSocketFactory())
                .build();

        //HttpConnectionFactory:配置写请求/解析响应处理器
        HttpConnectionFactory<HttpRoute, ManagedHttpClientConnection> connectionFactory = new ManagedHttpClientConnectionFactory(
                DefaultHttpRequestWriterFactory.INSTANCE,
                DefaultHttpResponseParserFactory.INSTANCE
        );

        //DNS解析器
        DnsResolver dnsResolver = SystemDefaultDnsResolver.INSTANCE;
        //创建连接池管理器
        PoolingHttpClientConnectionManager manager = new PoolingHttpClientConnectionManager(socketFactoryRegistry, connectionFactory, dnsResolver);
        //设置默认的socket参数
        manager.setDefaultSocketConfig(SocketConfig.custom().setTcpNoDelay(true).build());
        manager.setMaxTotal(300);//设置最大连接数。高于这个值时，新连接请求，需要阻塞，排队等待
        //路由是对MaxTotal的细分。
        // 每个路由实际最大连接数默认值是由DefaultMaxPerRoute控制。
        // MaxPerRoute设置的过小，无法支持大并发：ConnectionPoolTimeoutException:Timeout waiting for connection from pool
        manager.setDefaultMaxPerRoute(200);//每个路由的最大连接
        manager.setValidateAfterInactivity(5 * 1000);//在从连接池获取连接时，连接不活跃多长时间后需要进行一次验证，默认为2s

        //配置默认的请求参数
        RequestConfig defaultRequestConfig = RequestConfig.custom()
                .setConnectTimeout(2 * 1000)//连接超时设置为2s
                .setSocketTimeout(5 * 1000)//等待数据超时设置为5s
                .setConnectionRequestTimeout(2 * 1000)//从连接池获取连接的等待超时时间设置为2s
//                .setProxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.168.0.2", 1234))) //设置代理
                .build();

        CloseableHttpClient closeableHttpClient = HttpClients.custom()
                .setConnectionManager(manager)
                .setConnectionManagerShared(false)//连接池不是共享模式，这个共享是指与其它httpClient是否共享
                .evictIdleConnections(60, TimeUnit.SECONDS)//定期回收空闲连接
                .evictExpiredConnections()//回收过期连接
                .setConnectionTimeToLive(60, TimeUnit.SECONDS)//连接存活时间，如果不设置，则根据长连接信息决定
                .setDefaultRequestConfig(defaultRequestConfig)//设置默认的请求参数
                .setConnectionReuseStrategy(DefaultConnectionReuseStrategy.INSTANCE)//连接重用策略，即是否能keepAlive
                .setKeepAliveStrategy(DefaultConnectionKeepAliveStrategy.INSTANCE)//长连接配置，即获取长连接生产多长时间
                .setRetryHandler(new DefaultHttpRequestRetryHandler(0, false))//设置重试次数，默认为3次；当前是禁用掉
                .build();

        /**
         *JVM停止或重启时，关闭连接池释放掉连接
         */
        Runtime.getRuntime().addShutdownHook(new Thread() {
            @Override
            public void run() {
                try {
                    closeableHttpClient.close();
                    log.info("http client closed");
                } catch (IOException e) {
                    log.error(e.getMessage(), e);
                }
            }
        });
        return closeableHttpClient;
    }
 

private CloseableHttpClient getHttpClient() {
        //注册访问协议相关的Socket工厂
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", SSLConnectionSocketFactory.getSocketFactory())
                .build();

        //HttpConnectionFactory:配置写请求/解析响应处理器
        HttpConnectionFactory<HttpRoute, ManagedHttpClientConnection> connectionFactory = new ManagedHttpClientConnectionFactory(
                DefaultHttpRequestWriterFactory.INSTANCE,
                DefaultHttpResponseParserFactory.INSTANCE
        );

        //DNS解析器
        DnsResolver dnsResolver = SystemDefaultDnsResolver.INSTANCE;
        //创建连接池管理器
        PoolingHttpClientConnectionManager manager = new PoolingHttpClientConnectionManager(socketFactoryRegistry, connectionFactory, dnsResolver);
        //设置默认的socket参数
        manager.setDefaultSocketConfig(SocketConfig.custom().setTcpNoDelay(true).build());
        manager.setMaxTotal(300);//设置最大连接数。高于这个值时，新连接请求，需要阻塞，排队等待
        //路由是对MaxTotal的细分。
        // 每个路由实际最大连接数默认值是由DefaultMaxPerRoute控制。
        // MaxPerRoute设置的过小，无法支持大并发：ConnectionPoolTimeoutException:Timeout waiting for connection from pool
        manager.setDefaultMaxPerRoute(200);//每个路由的最大连接
        manager.setValidateAfterInactivity(5 * 1000);//在从连接池获取连接时，连接不活跃多长时间后需要进行一次验证，默认为2s

        //配置默认的请求参数
        RequestConfig defaultRequestConfig = RequestConfig.custom()
                .setConnectTimeout(2 * 1000)//连接超时设置为2s
                .setSocketTimeout(5 * 1000)//等待数据超时设置为5s
                .setConnectionRequestTimeout(2 * 1000)//从连接池获取连接的等待超时时间设置为2s
//                .setProxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.168.0.2", 1234))) //设置代理
                .build();

        CloseableHttpClient closeableHttpClient = HttpClients.custom()
                .setConnectionManager(manager)
                .setConnectionManagerShared(false)//连接池不是共享模式，这个共享是指与其它httpClient是否共享
                .evictIdleConnections(60, TimeUnit.SECONDS)//定期回收空闲连接
                .evictExpiredConnections()//回收过期连接
                .setConnectionTimeToLive(60, TimeUnit.SECONDS)//连接存活时间，如果不设置，则根据长连接信息决定
                .setDefaultRequestConfig(defaultRequestConfig)//设置默认的请求参数
                .setConnectionReuseStrategy(DefaultConnectionReuseStrategy.INSTANCE)//连接重用策略，即是否能keepAlive
                .setKeepAliveStrategy(DefaultConnectionKeepAliveStrategy.INSTANCE)//长连接配置，即获取长连接生产多长时间
                .setRetryHandler(new DefaultHttpRequestRetryHandler(0, false))//设置重试次数，默认为3次；当前是禁用掉
                .build();

        /**
         *JVM停止或重启时，关闭连接池释放掉连接
         */
        Runtime.getRuntime().addShutdownHook(new Thread() {
            @Override
            public void run() {
                try {
                    LOGGER.info("closing http client");
                    closeableHttpClient.close();
                    LOGGER.info("http client closed");
                } catch (IOException e) {
                    LOGGER.error(e.getMessage(), e);
                }
            }
        });
        return closeableHttpClient;
    }
 

private HttpClient createHttpClient(FDSClientConfiguration config) {
  RequestConfig.Builder requestConfigBuilder = RequestConfig.custom()
      .setConnectTimeout(config.getConnectionTimeoutMs())
      .setSocketTimeout(config.getSocketTimeoutMs());

  String proxyHost = config.getProxyHost();

  int proxyPort = config.getProxyPort();

  if (proxyHost != null && proxyPort > 0) {
    HttpHost proxy = new HttpHost(proxyHost, proxyPort);
    requestConfigBuilder.setProxy(proxy);

    String proxyUsername = config.getProxyUsername();
    String proxyPassword = config.getProxyPassword();
    String proxyDomain = config.getProxyDomain();
    String proxyWorkstation = config.getProxyWorkstation();
    if (proxyUsername != null && proxyPassword != null) {
      credentialsProvider = new BasicCredentialsProvider();

      credentialsProvider.setCredentials(new AuthScope(proxyHost, proxyPort),
          new NTCredentials(proxyUsername, proxyPassword, proxyWorkstation, proxyDomain));

      authCache = new BasicAuthCache();
      authCache.put(proxy, new BasicScheme());
    }
  }

  RequestConfig requestConfig = requestConfigBuilder.build();

  SocketConfig socketConfig = SocketConfig.custom()
      .setSoTimeout(config.getSocketTimeoutMs())
      .build();

  RegistryBuilder<ConnectionSocketFactory> registryBuilder = RegistryBuilder.create();
  registryBuilder.register("http", new ConnectionInfoRecorderSocketFactory(
      new PlainConnectionSocketFactory()));

  if (config.isHttpsEnabled()) {
    SSLContext sslContext = SSLContexts.createSystemDefault();
    SSLConnectionSocketFactory sslConnectionSocketFactory =
        new SSLConnectionInfoRecorderSocketFactory(
        sslContext,
        NoopHostnameVerifier.INSTANCE);
    registryBuilder.register("https", sslConnectionSocketFactory);
  }
  ipBlackList = new TimeBasedIpAddressBlackList(config.getIpAddressNegativeDurationMillsec());
  connectionManager = new PoolingHttpClientConnectionManager(registryBuilder.build(),
      null,
      null,
      new RoundRobinDNSResolver(new InternalSiteBlackListDNSResolver(ipBlackList,
          this.dnsResolver == null ?
              SystemDefaultDnsResolver.INSTANCE : this.dnsResolver)),
      config.getHTTPKeepAliveTimeoutMS(), TimeUnit.MILLISECONDS);
  connectionManager.setDefaultMaxPerRoute(config.getMaxConnection());
  connectionManager.setMaxTotal(config.getMaxConnection());
  connectionManager.setDefaultSocketConfig(socketConfig);
  FDSBlackListEnabledHostChecker fdsBlackListEnabledHostChecker =
      new FDSBlackListEnabledHostChecker();
  retryHandler = new InternalIpBlackListRetryHandler(config.getRetryCount(),
      ipBlackList, fdsBlackListEnabledHostChecker);

  return HttpClients.custom()
      .setRetryHandler(retryHandler)
      .setServiceUnavailableRetryStrategy(new ServiceUnavailableDNSBlackListStrategy(
          config.getRetryCount(),
          config.getRetryIntervalMilliSec(),
          ipBlackList,
          fdsBlackListEnabledHostChecker))
      .setConnectionManager(connectionManager)
      .setDefaultRequestConfig(requestConfig)
      .build();
}