private void initConfigurationContext() throws Exception {
    HttpConnectionManager multiThreadedHttpConnectionManager = new MultiThreadedHttpConnectionManager();
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);

    File configFile = new File(DEFAULT_AXIS2_XML);

    if (!configFile.exists()) {
        configurationContext = ConfigurationContextFactory.createDefaultConfigurationContext();
        configurationContext.setProperty(HTTPConstants.DEFAULT_MAX_CONNECTIONS_PER_HOST, MAX_CONNECTIONS_PER_HOST);
    } else {
        configurationContext = ConfigurationContextFactory.
                createConfigurationContextFromFileSystem(DEFAULT_CLIENT_REPO, DEFAULT_AXIS2_XML);
    }
    configurationContext.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);
    configurationContext.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Constants.VALUE_TRUE);

    Map<String, TransportOutDescription> transportsOut = configurationContext.getAxisConfiguration()
            .getTransportsOut();

    for (TransportOutDescription transportOutDescription : transportsOut.values()) {
        if (Constants.TRANSPORT_HTTP.equals(transportOutDescription.getName()) || Constants.TRANSPORT_HTTPS
                .equals(transportOutDescription.getName())) {
            transportOutDescription.getSender().init(configurationContext, transportOutDescription);
        }
    }
}
 

private RemoteLogRepositoryBackend()
{

    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.getParams().setDefaultMaxConnectionsPerHost(CONCURENT_HTTP_CONNECTIONS);

    /*for (int i = 0; i < CONCURENT_HTTP_CONNECTIONS; i++)
    {
        HttpConnection httpConn = new HttpConnection(REPOSITORY_HOST_ADDRESS, REPOSITORY_HOST_PORT);
        httpConn.setHttpConnectionManager(connectionManager);
    }*/
    _httpClient = new HttpClient(connectionManager);
    /*HostConfiguration hc = new HostConfiguration();
    hc.setHost(REPOSITORY_HOST_ADDRESS, REPOSITORY_HOST_PORT);
    _httpClient.setHostConfiguration(hc);*/
    _dlQueue = new DownloadQueue(CONCURENT_DOWNLOADS);
    _upQueue = new UploadQueue(CONCURENT_UPLOADS);
}
 

public HttpClientTransmitterImpl()
{
    protocolMap = new TreeMap<String,Protocol>();
    protocolMap.put(HTTP_SCHEME_NAME, httpProtocol);
    protocolMap.put(HTTPS_SCHEME_NAME, httpsProtocol);

    httpClient = new HttpClient();
    httpClient.setHttpConnectionManager(new MultiThreadedHttpConnectionManager());
    httpMethodFactory = new StandardHttpMethodFactoryImpl();
    jsonErrorSerializer = new ExceptionJsonSerializer();

    // Create an HTTP Proxy Host if appropriate system properties are set
    httpProxyHost = HttpClientHelper.createProxyHost("http.proxyHost", "http.proxyPort", DEFAULT_HTTP_PORT);
    httpProxyCredentials = HttpClientHelper.createProxyCredentials("http.proxyUser", "http.proxyPassword");
    httpAuthScope = createProxyAuthScope(httpProxyHost);

    // Create an HTTPS Proxy Host if appropriate system properties are set
    httpsProxyHost = HttpClientHelper.createProxyHost("https.proxyHost", "https.proxyPort", DEFAULT_HTTPS_PORT);
    httpsProxyCredentials = HttpClientHelper.createProxyCredentials("https.proxyUser", "https.proxyPassword");
    httpsAuthScope = createProxyAuthScope(httpsProxyHost);
}
 

protected HttpClient constructHttpClient()
{
    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    HttpClient httpClient = new HttpClient(connectionManager);
    HttpClientParams params = httpClient.getParams();
    params.setBooleanParameter(HttpConnectionParams.TCP_NODELAY, true);
    params.setBooleanParameter(HttpConnectionParams.STALE_CONNECTION_CHECK, true);
    if (socketTimeout != null) 
    {
        params.setSoTimeout(socketTimeout);
    }
    HttpConnectionManagerParams connectionManagerParams = httpClient.getHttpConnectionManager().getParams();
    connectionManagerParams.setMaxTotalConnections(maxTotalConnections);
    connectionManagerParams.setDefaultMaxConnectionsPerHost(maxHostConnections);
    connectionManagerParams.setConnectionTimeout(connectionTimeout);

    return httpClient;
}
 

public DiamondSDKManagerImpl(int connection_timeout, int require_timeout) throws IllegalArgumentException {
    if (connection_timeout < 0)
        throw new IllegalArgumentException("连接超时时间设置必须大于0[单位(毫秒)]!");
    if (require_timeout < 0)
        throw new IllegalArgumentException("请求超时时间设置必须大于0[单位(毫秒)]!");
    this.connection_timeout = connection_timeout;
    this.require_timeout = require_timeout;
    int maxHostConnections = 50;
    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();

    connectionManager.getParams().setDefaultMaxConnectionsPerHost(maxHostConnections);
    connectionManager.getParams().setStaleCheckingEnabled(true);
    this.client = new HttpClient(connectionManager);
    // 设置连接超时时间
    client.getHttpConnectionManager().getParams().setConnectionTimeout(this.connection_timeout);
    // 设置读超时为1分钟
    client.getHttpConnectionManager().getParams().setSoTimeout(60 * 1000);
    client.getParams().setContentCharset("GBK");
    log.info("设置连接超时时间为: " + this.connection_timeout + "毫秒");
}
 

protected void initHttpClient() {
    if (MockServer.isTestMode()) {
        return;
    }
    HostConfiguration hostConfiguration = new HostConfiguration();
    hostConfiguration.setHost(diamondConfigure.getDomainNameList().get(this.domainNamePos.get()),
        diamondConfigure.getPort());

    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.closeIdleConnections(diamondConfigure.getPollingIntervalTime() * 4000);

    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setStaleCheckingEnabled(diamondConfigure.isConnectionStaleCheckingEnabled());
    params.setMaxConnectionsPerHost(hostConfiguration, diamondConfigure.getMaxHostConnections());
    params.setMaxTotalConnections(diamondConfigure.getMaxTotalConnections());
    params.setConnectionTimeout(diamondConfigure.getConnectionTimeout());
    // 设置读超时为1分钟,
    // [email protected]
    params.setSoTimeout(60 * 1000);

    connectionManager.setParams(params);
    httpClient = new HttpClient(connectionManager);
    httpClient.setHostConfiguration(hostConfiguration);
}
 

public static InputStream getInputStreamFromUrl(final String url, final String user, final String password) {

        try {
            final Pair<String, Integer> hostAndPort = validateUrl(url);
            final HttpClient httpclient = new HttpClient(new MultiThreadedHttpConnectionManager());
            if ((user != null) && (password != null)) {
                httpclient.getParams().setAuthenticationPreemptive(true);
                final Credentials defaultcreds = new UsernamePasswordCredentials(user, password);
                httpclient.getState().setCredentials(new AuthScope(hostAndPort.first(), hostAndPort.second(), AuthScope.ANY_REALM), defaultcreds);
                s_logger.info("Added username=" + user + ", password=" + password + "for host " + hostAndPort.first() + ":" + hostAndPort.second());
            }
            // Execute the method.
            final GetMethod method = new GetMethod(url);
            final int statusCode = httpclient.executeMethod(method);

            if (statusCode != HttpStatus.SC_OK) {
                s_logger.error("Failed to read from URL: " + url);
                return null;
            }

            return method.getResponseBodyAsStream();
        } catch (final Exception ex) {
            s_logger.error("Failed to read from URL: " + url);
            return null;
        }
    }
 

public DiamondSDKManagerImpl(int connection_timeout, int require_timeout) throws IllegalArgumentException {
    if (connection_timeout < 0)
        throw new IllegalArgumentException("连接超时时间设置必须大于0[单位(毫秒)]!");
    if (require_timeout < 0)
        throw new IllegalArgumentException("请求超时时间设置必须大于0[单位(毫秒)]!");
    this.connection_timeout = connection_timeout;
    this.require_timeout = require_timeout;
    int maxHostConnections = 50;
    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();

    connectionManager.getParams().setDefaultMaxConnectionsPerHost(maxHostConnections);
    connectionManager.getParams().setStaleCheckingEnabled(true);
    this.client = new HttpClient(connectionManager);
    // 设置连接超时时间
    client.getHttpConnectionManager().getParams().setConnectionTimeout(this.connection_timeout);
    // 设置读超时为1分钟
    client.getHttpConnectionManager().getParams().setSoTimeout(60 * 1000);
    client.getParams().setContentCharset("GBK");
    log.info("设置连接超时时间为: " + this.connection_timeout + "毫秒");
}
 

protected void initHttpClient() {
    if (MockServer.isTestMode()) {
        return;
    }
    HostConfiguration hostConfiguration = new HostConfiguration();
    hostConfiguration.setHost(diamondConfigure.getDomainNameList().get(this.domainNamePos.get()),
        diamondConfigure.getPort());

    MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.closeIdleConnections(diamondConfigure.getPollingIntervalTime() * 4000);

    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setStaleCheckingEnabled(diamondConfigure.isConnectionStaleCheckingEnabled());
    params.setMaxConnectionsPerHost(hostConfiguration, diamondConfigure.getMaxHostConnections());
    params.setMaxTotalConnections(diamondConfigure.getMaxTotalConnections());
    params.setConnectionTimeout(diamondConfigure.getConnectionTimeout());
    // 设置读超时为1分钟,
    // [email protected]
    params.setSoTimeout(60 * 1000);

    connectionManager.setParams(params);
    httpClient = new HttpClient(connectionManager);
    httpClient.setHostConfiguration(hostConfiguration);
}
 

@Bean
public SAMLProcessorImpl processor() {
    HttpClient httpClient = new HttpClient(new MultiThreadedHttpConnectionManager());
    ArtifactResolutionProfileImpl artifactResolutionProfile = new ArtifactResolutionProfileImpl(httpClient);
    HTTPSOAP11Binding soapBinding = new HTTPSOAP11Binding(parserPool());
    artifactResolutionProfile.setProcessor(new SAMLProcessorImpl(soapBinding));

    VelocityEngine velocityEngine = VelocityFactory.getEngine();
    Collection<SAMLBinding> bindings = new ArrayList<>();
    bindings.add(new HTTPRedirectDeflateBinding(parserPool()));
    bindings.add(new HTTPPostBinding(parserPool(), velocityEngine));
    bindings.add(new HTTPArtifactBinding(parserPool(), velocityEngine, artifactResolutionProfile));
    bindings.add(new HTTPSOAP11Binding(parserPool()));
    bindings.add(new HTTPPAOS11Binding(parserPool()));
    return new SAMLProcessorImpl(bindings);
}
 

/**
 * Gets the maximum number of connections to be used for a particular host config.  If
 * the value has not been specified for the given host the default value will be
 * returned.
 * 
 * @param hostConfiguration The host config.
 * @return The maximum number of connections to be used for the given host config.
 * 
 * @see #MAX_HOST_CONNECTIONS
 */
public int getMaxConnectionsPerHost(HostConfiguration hostConfiguration) {
    
    Map m = (Map) getParameter(MAX_HOST_CONNECTIONS);
    if (m == null) {
        // MAX_HOST_CONNECTIONS have not been configured, using the default value
        return MultiThreadedHttpConnectionManager.DEFAULT_MAX_HOST_CONNECTIONS;
    } else {
        Integer max = (Integer) m.get(hostConfiguration);
        if (max == null && hostConfiguration != HostConfiguration.ANY_HOST_CONFIGURATION) {
            // the value has not been configured specifically for this host config,
            // use the default value
            return getMaxConnectionsPerHost(HostConfiguration.ANY_HOST_CONFIGURATION);
        } else {
            return (
                    max == null 
                    ? MultiThreadedHttpConnectionManager.DEFAULT_MAX_HOST_CONNECTIONS 
                    : max.intValue()
                );
        }
    }
}
 

private void createHttpClient() {
    Protocol protocol = Protocol.getProtocol("https");
    if (protocol == null) {
        // ZAP: Dont override an existing protocol - it causes problems with ZAP
        Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443);
        Protocol.registerProtocol("https", easyhttps);
    }
    initialState = new HttpState();

    MultiThreadedHttpConnectionManager connectionManager =
            new MultiThreadedHttpConnectionManager();
    connectionManager.getParams().setDefaultMaxConnectionsPerHost(1000);
    connectionManager.getParams().setMaxTotalConnections(1000);

    // connectionManager.set

    httpclient = new HttpClient(connectionManager);
    // httpclient.

}
 

private void initConfigurationContext() throws Exception {
    HttpConnectionManager multiThreadedHttpConnectionManager = new MultiThreadedHttpConnectionManager();
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);

    File configFile = new File(DEFAULT_AXIS2_XML);

    if (!configFile.exists()) {
        configurationContext = ConfigurationContextFactory.createDefaultConfigurationContext();
        configurationContext.setProperty(HTTPConstants.DEFAULT_MAX_CONNECTIONS_PER_HOST, MAX_CONNECTIONS_PER_HOST);
    } else {
        configurationContext = ConfigurationContextFactory.
                createConfigurationContextFromFileSystem(DEFAULT_CLIENT_REPO, DEFAULT_AXIS2_XML);
    }
    configurationContext.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);
    configurationContext.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Constants.VALUE_TRUE);

    Map<String, TransportOutDescription> transportsOut =
            configurationContext.getAxisConfiguration().getTransportsOut();

    for (TransportOutDescription transportOutDescription : transportsOut.values()) {
        if (Constants.TRANSPORT_HTTP.equals(transportOutDescription.getName()) ||
                Constants.TRANSPORT_HTTPS.equals(transportOutDescription.getName())) {
            transportOutDescription.getSender().init(configurationContext, transportOutDescription);
        }
    }
}
 

/**
 * A HttpClient with basic authentication and no host or port setting. Can only be used to retrieve absolute URLs
 * 
 * @param user
 *            can be NULL
 * @param password
 *            can be NULL
 * @return HttpClient
 */
public static HttpClient getHttpClientInstance(String user, String password) {
    HttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    HttpConnectionParams params = connectionManager.getParams();
    // wait max 10 seconds to establish connection
    params.setConnectionTimeout(10000);
    // a read() call on the InputStream associated with this Socket
    // will block for only this amount
    params.setSoTimeout(10000);
    HttpClient c = new HttpClient(connectionManager);

    // use basic authentication if available
    if (user != null && user.length() > 0) {
        AuthScope authScope = new AuthScope(null, -1, null);
        Credentials credentials = new UsernamePasswordCredentials(user, password);
        c.getState().setCredentials(authScope, credentials);
    }
    return c;
}
 

/**
 * A HttpClient with basic authentication and no host or port setting. Can only be used to retrieve absolute URLs
 * 
 * @param user
 *            can be NULL
 * @param password
 *            can be NULL
 * @return HttpClient
 */
public static HttpClient getHttpClientInstance(String user, String password) {
    HttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    HttpConnectionParams params = connectionManager.getParams();
    // wait max 10 seconds to establish connection
    params.setConnectionTimeout(10000);
    // a read() call on the InputStream associated with this Socket
    // will block for only this amount
    params.setSoTimeout(10000);
    HttpClient c = new HttpClient(connectionManager);

    // use basic authentication if available
    if (user != null && user.length() > 0) {
        AuthScope authScope = new AuthScope(null, -1, null);
        Credentials credentials = new UsernamePasswordCredentials(user, password);
        c.getState().setCredentials(authScope, credentials);
    }
    return c;
}
 

public static InputStream getInputStreamFromUrl(String url, String user, String password) {

        try {
            Pair<String, Integer> hostAndPort = validateUrl(url);
            HttpClient httpclient = new HttpClient(new MultiThreadedHttpConnectionManager());
            if ((user != null) && (password != null)) {
                httpclient.getParams().setAuthenticationPreemptive(true);
                Credentials defaultcreds = new UsernamePasswordCredentials(user, password);
                httpclient.getState().setCredentials(new AuthScope(hostAndPort.first(), hostAndPort.second(), AuthScope.ANY_REALM), defaultcreds);
                s_logger.info("Added username=" + user + ", password=" + password + "for host " + hostAndPort.first() + ":" + hostAndPort.second());
            }
            // Execute the method.
            GetMethod method = new GetMethod(url);
            int statusCode = httpclient.executeMethod(method);

            if (statusCode != HttpStatus.SC_OK) {
                s_logger.error("Failed to read from URL: " + url);
                return null;
            }

            return method.getResponseBodyAsStream();
        } catch (Exception ex) {
            s_logger.error("Failed to read from URL: " + url);
            return null;
        }
    }
 

private ConfigurationContext getClientConfigurationContext() throws AxisFault {
    String clientRepositoryLocation = serverConfigurationService.getFirstProperty(CLIENT_REPOSITORY_LOCATION);
    String clientAxis2XmlLocationn = serverConfigurationService.getFirstProperty(CLIENT_AXIS2_XML_LOCATION);
    ConfigurationContext clientConfigContextToReturn = ConfigurationContextFactory
            .createConfigurationContextFromFileSystem(clientRepositoryLocation, clientAxis2XmlLocationn);
    MultiThreadedHttpConnectionManager httpConnectionManager = new MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();

    // Set the default max connections per host
    int defaultMaxConnPerHost = 500;
    Parameter defaultMaxConnPerHostParam = clientConfigContextToReturn.getAxisConfiguration()
            .getParameter("defaultMaxConnPerHost");
    if (defaultMaxConnPerHostParam != null) {
        defaultMaxConnPerHost = Integer.parseInt((String) defaultMaxConnPerHostParam.getValue());
    }
    params.setDefaultMaxConnectionsPerHost(defaultMaxConnPerHost);

    // Set the max total connections
    int maxTotalConnections = 15000;
    Parameter maxTotalConnectionsParam = clientConfigContextToReturn.getAxisConfiguration()
            .getParameter("maxTotalConnections");
    if (maxTotalConnectionsParam != null) {
        maxTotalConnections = Integer.parseInt((String) maxTotalConnectionsParam.getValue());
    }
    params.setMaxTotalConnections(maxTotalConnections);

    params.setSoTimeout(600000);
    params.setConnectionTimeout(600000);

    httpConnectionManager.setParams(params);
    clientConfigContextToReturn
            .setProperty(HTTPConstants.MULTITHREAD_HTTP_CONNECTION_MANAGER, httpConnectionManager);

    clientConfigContextToReturn.setProperty(MicroIntegratorBaseConstants.WORK_DIR, serverWorkDir);
    return clientConfigContextToReturn;
}
 

/**
 * Method that initialize http client
 *
 * note: this method is used to export birt statistics files
 * @param internalURL
 * @return
 * @throws MalformedURLException
 */
public static HttpClient initializeHttpClient(String internalURL) throws MalformedURLException {
       HttpClient httpClient = new HttpClient(new MultiThreadedHttpConnectionManager());
       URL url = new URL(internalURL);
       int port = (url.getPort() == -1) ? url.getDefaultPort() : url.getPort();
       
       httpClient.getHostConfiguration()
			.setHost(url.getHost(), port, url.getProtocol());

       return httpClient;
   }
 

/**
 * 初始化HttpClient对象
 */
public static HttpClient getHttpClient() {
    HttpClient client = new HttpClient();
    
    // 设置Cookie处理策略，RFC_2109是支持较普遍的一个，还有其他cookie协议
    client.getParams().setCookiePolicy(CookiePolicy.RFC_2109);
    
    // 设置超时时间
    MultiThreadedHttpConnectionManager hcm = new MultiThreadedHttpConnectionManager();
    hcm.getParams().setConnectionTimeout(HTTP_REQUEST_TIMEOUT);
    client.setHttpConnectionManager(hcm);
    return client;
}
 

public BitlyUrlShortenerImpl()
{
    httpClient = new HttpClient();
    httpClient.setHttpConnectionManager(new MultiThreadedHttpConnectionManager());
    HostConfiguration hostConfiguration = new HostConfiguration();
    hostConfiguration.setHost("api-ssl.bitly.com", 443, Protocol.getProtocol("https"));
    httpClient.setHostConfiguration(hostConfiguration);
}
 

@Override
public void close()
{
   if(httpClient != null)
   {
       HttpConnectionManager connectionManager = httpClient.getHttpConnectionManager();
       if(connectionManager instanceof MultiThreadedHttpConnectionManager)
       {
           ((MultiThreadedHttpConnectionManager)connectionManager).shutdown();
       }
   }
    
}
 

private HttpClient createHttpClient() {
	//see http://hc.apache.org/httpclient-3.x/threading.html
	MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
	HttpConnectionManagerParams params = connectionManager.getParams();
	params.setMaxConnectionsPerHost(HostConfiguration.ANY_HOST_CONFIGURATION, PreferenceHelper.getInt(ServerConstants.HTTP_MAX_CONN_HOST_CONF_KEY, 50));
	params.setMaxTotalConnections(PreferenceHelper.getInt(ServerConstants.HTTP_MAX_CONN_TOTAL_CONF_KEY, 150));
	params.setConnectionTimeout(PreferenceHelper.getInt(ServerConstants.HTTP_CONN_TIMEOUT_CONF_KEY, 15000)); //15s
	params.setSoTimeout(PreferenceHelper.getInt(ServerConstants.HTTP_SO_TIMEOUT_CONF_KEY, 30000)); //30s
	connectionManager.setParams(params);

	HttpClientParams clientParams = new HttpClientParams();
	clientParams.setConnectionManagerTimeout(PreferenceHelper.getInt(ServerConstants.HTTP_CONN_MGR_TIMEOUT_CONF_KEY, 300000)); // 5 minutes

	return new HttpClient(clientParams, connectionManager);
}
 

/**
 * Builds an HTTP client with the given settings. Settings are NOT reset to their default values after a client has
 * been created.
 * 
 * @return the created client.
 */
public HttpClient buildClient() {
    if (httpsProtocolSocketFactory != null) {
        Protocol.registerProtocol("https", new Protocol("https", httpsProtocolSocketFactory, 443));
    }

    HttpClientParams clientParams = new HttpClientParams();
    clientParams.setAuthenticationPreemptive(isPreemptiveAuthentication());
    clientParams.setContentCharset(getContentCharSet());
    clientParams.setParameter(HttpClientParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(
            connectionRetryAttempts, false));

    HttpConnectionManagerParams connMgrParams = new HttpConnectionManagerParams();
    connMgrParams.setConnectionTimeout(getConnectionTimeout());
    connMgrParams.setDefaultMaxConnectionsPerHost(getMaxConnectionsPerHost());
    connMgrParams.setMaxTotalConnections(getMaxTotalConnections());
    connMgrParams.setReceiveBufferSize(getReceiveBufferSize());
    connMgrParams.setSendBufferSize(getSendBufferSize());
    connMgrParams.setTcpNoDelay(isTcpNoDelay());

    MultiThreadedHttpConnectionManager connMgr = new MultiThreadedHttpConnectionManager();
    connMgr.setParams(connMgrParams);

    HttpClient httpClient = new HttpClient(clientParams, connMgr);

    if (proxyHost != null) {
        HostConfiguration hostConfig = new HostConfiguration();
        hostConfig.setProxy(proxyHost, proxyPort);
        httpClient.setHostConfiguration(hostConfig);

        if (proxyUsername != null) {
            AuthScope proxyAuthScope = new AuthScope(proxyHost, proxyPort);
            UsernamePasswordCredentials proxyCredentials = new UsernamePasswordCredentials(proxyUsername,
                    proxyPassword);
            httpClient.getState().setProxyCredentials(proxyAuthScope, proxyCredentials);
        }
    }

    return httpClient;
}
 

/**
 * Shut down services that exist outside of the core.
 */
@Override
public void shutdown()
{
    super.shutdown();
    try
    {
        LOGGER.info("Shutting down Alfresco core container services");

        AlfrescoSolrDataModel.getInstance().close();
        SOLRAPIClientFactory.close();
        MultiThreadedHttpConnectionManager.shutdownAll();

        coreNames().forEach(trackerRegistry::removeTrackersForCore);
        informationServers.clear();

        if (!scheduler.isShutdown())
        {
            scheduler.pauseAll();

            if (trackerRegistry.getModelTracker() != null)
                trackerRegistry.getModelTracker().shutdown();

            trackerRegistry.setModelTracker(null);
            scheduler.shutdown();
        }
    }
    catch (Exception exception)
    {
        LOGGER.error(
                "Unable to properly shut down Alfresco core container services. See the exception below for further details.",
                exception);
    }
}
 

public SharedHttpClientProvider(String alfrescoUrl, int maxNumberOfConnections)
{
    setAlfrescoUrl(alfrescoUrl);
    
    // Initialize manager
    MultiThreadedHttpConnectionManager manager = new MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setMaxTotalConnections(maxNumberOfConnections);
    params.setMaxConnectionsPerHost(HostConfiguration.ANY_HOST_CONFIGURATION, maxNumberOfConnections);

    // Create the client
    client = new HttpClient(manager);
    client.getParams().setAuthenticationPreemptive(true);
}
 

/**
 * 私有的构造方法
 */
private HttpProtocolHandler() {
    // 创建一个线程安全的HTTP连接池
    connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.getParams().setDefaultMaxConnectionsPerHost(defaultMaxConnPerHost);
    connectionManager.getParams().setMaxTotalConnections(defaultMaxTotalConn);

    IdleConnectionTimeoutThread ict = new IdleConnectionTimeoutThread();
    ict.addConnectionManager(connectionManager);
    ict.setConnectionTimeout(defaultIdleConnTimeout);

    ict.start();
}
 

@VisibleForTesting
protected HTTPArtifactBinding createDefaultArtifactBinding(ServiceProviderBuilder builder) {
    HttpClientParams params = new HttpClientParams();
    params.setIntParameter(HttpConnectionParams.CONNECTION_TIMEOUT, 60000);
    HttpClient httpClient = new HttpClient(params, new MultiThreadedHttpConnectionManager());
    ArtifactResolutionProfileImpl artifactResolutionProfile = new ArtifactResolutionProfileImpl(httpClient);
    builder.setSharedObject(ArtifactResolutionProfile.class, artifactResolutionProfile);
    HTTPSOAP11Binding soapBinding = new HTTPSOAP11Binding(parserPool);
    artifactResolutionProfile.setProcessor(new SAMLProcessorImpl(soapBinding));
    return new HTTPArtifactBinding(parserPool, getVelocityEngine(), artifactResolutionProfile);
}
 

static void shutdown(@NotNull final HttpClient... httpClients) {
  for (final HttpClient httpClient : httpClients) {
    if (httpClient.getHttpConnectionManager() instanceof MultiThreadedHttpConnectionManager) {
      try {
        ((MultiThreadedHttpConnectionManager)httpClient.getHttpConnectionManager()).shutdown();
      } catch (Exception e) {
        LOG.debug("Got exception while shutting down httpClient " + httpClient + ".", e);
      }
    }
  }
}
 

public static void checkUrlExistence(final String url) {
    if (url.toLowerCase().startsWith("http") || url.toLowerCase().startsWith("https")) {
        final HttpClient httpClient = new HttpClient(new MultiThreadedHttpConnectionManager());
        final HeadMethod httphead = new HeadMethod(url);
        try {
            if (httpClient.executeMethod(httphead) != HttpStatus.SC_OK) {
                throw new IllegalArgumentException("Invalid URL: " + url);
            }
        } catch (final HttpException hte) {
            throw new IllegalArgumentException("Cannot reach URL: " + url);
        } catch (final IOException ioe) {
            throw new IllegalArgumentException("Cannot reach URL: " + url);
        }
    }
}
 

/**
 * 私有的构造方法
 */
private HttpProtocolHandler() {
    // 创建一个线程安全的HTTP连接池
    connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.getParams().setDefaultMaxConnectionsPerHost(defaultMaxConnPerHost);
    connectionManager.getParams().setMaxTotalConnections(defaultMaxTotalConn);

    IdleConnectionTimeoutThread ict = new IdleConnectionTimeoutThread();
    ict.addConnectionManager(connectionManager);
    ict.setConnectionTimeout(defaultIdleConnTimeout);

    ict.start();
}