Java Code Examples for org.apache.commons.httpclient.params.HttpConnectionManagerParams#setMaxTotalConnections()

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;
}
 

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);
}
 

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);
}
 

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;
}
 

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;
}
 

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);
}
 

/**
 * Creates an instance of MultiThreadedHttpConnectionManager using HttpClient 3.x APIs
 *
 * @param properties Properties to configure MultiThreadedHttpConnectionManager
 * @return An instance of properly configured MultiThreadedHttpConnectionManager
 */
private HttpConnectionManager createConnectionManager(Properties properties) {
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    if (properties == null || properties.isEmpty()) {
        throw new IllegalArgumentException("Parameters required to initialize HttpClient instances " +
                "associated with OAuth token validation service stub are not provided");
    }
    String maxConnectionsPerHostParam = properties.getProperty("MaxConnectionsPerHost");
    if (maxConnectionsPerHostParam == null || maxConnectionsPerHostParam.isEmpty()) {
        if (log.isDebugEnabled()) {
            log.debug("MaxConnectionsPerHost parameter is not explicitly defined. Therefore, the default, " +
                    "which is 2, will be used");
        }
    } else {
        params.setDefaultMaxConnectionsPerHost(Integer.parseInt(maxConnectionsPerHostParam));
    }

    String maxTotalConnectionsParam = properties.getProperty("MaxTotalConnections");
    if (maxTotalConnectionsParam == null || maxTotalConnectionsParam.isEmpty()) {
        if (log.isDebugEnabled()) {
            log.debug("MaxTotalConnections parameter is not explicitly defined. Therefore, the default, " +
                    "which is 10, will be used");
        }
    } else {
        params.setMaxTotalConnections(Integer.parseInt(maxTotalConnectionsParam));
    }
    HttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
    connectionManager.setParams(params);
    return connectionManager;
}
 

/**
 * Init the parameter settings for the http client
 */
private HttpConnectionManagerParams connectionParams() {
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setDefaultMaxConnectionsPerHost(readMaxHostConnectionSetting());
    params.setMaxTotalConnections(readMaxTotalConnectionSetting());
    return params;

}
 

private AutoscalerCloudControllerClient() {
    MultiThreadedHttpConnectionManager multiThreadedHttpConnectionManager = new
            MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setDefaultMaxConnectionsPerHost(AS_CC_CLIENT_MAX_CONNECTIONS_PER_HOST);
    params.setMaxTotalConnections(AS_CC_CLIENT_MAX_TOTAL_CONNECTIONS);
    multiThreadedHttpConnectionManager.setParams(params);
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);

    try {
        ConfigurationContext ctx = ConfigurationContextFactory.createConfigurationContextFromFileSystem(null, null);
        ctx.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);
        XMLConfiguration conf = ConfUtil.getInstance(null).getConfiguration();
        int port = conf.getInt("autoscaler.cloudController.port", AutoscalerConstants
                .CLOUD_CONTROLLER_DEFAULT_PORT);
        String hostname = conf.getString("autoscaler.cloudController.hostname", "localhost");
        String epr = "https://" + hostname + ":" + port + "/" + AutoscalerConstants.CLOUD_CONTROLLER_SERVICE_SFX;
        int cloudControllerClientTimeout = conf.getInt("autoscaler.cloudController.clientTimeout", 180000);

        stub = new CloudControllerServiceStub(ctx, epr);
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.SO_TIMEOUT, cloudControllerClientTimeout);
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CONNECTION_TIMEOUT,
                cloudControllerClientTimeout);
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CHUNKED, Constants.VALUE_FALSE);
        stub._getServiceClient().getOptions().setProperty(Constants.Configuration.DISABLE_SOAP_ACTION, Boolean
                .TRUE);
    } catch (Exception e) {
        log.error("Could not initialize cloud controller client", e);
    }
}
 

private CloudControllerServiceClient(String epr) throws AxisFault {
    MultiThreadedHttpConnectionManager multiThreadedHttpConnectionManager = new
            MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setDefaultMaxConnectionsPerHost(StratosConstants.CLOUD_CONTROLLER_CLIENT_MAX_CONNECTIONS_PER_HOST);
    params.setMaxTotalConnections(StratosConstants.CLOUD_CONTROLLER_CLIENT_MAX_TOTAL_CONNECTIONS);
    multiThreadedHttpConnectionManager.setParams(params);
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);
    ConfigurationContext ctx = ConfigurationContextFactory.createConfigurationContextFromFileSystem(null, null);
    ctx.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);

    String ccSocketTimeout = System.getProperty(StratosConstants.CLOUD_CONTROLLER_CLIENT_SOCKET_TIMEOUT) == null ?
            StratosConstants.DEFAULT_CLIENT_SOCKET_TIMEOUT :
            System.getProperty(StratosConstants.CLOUD_CONTROLLER_CLIENT_SOCKET_TIMEOUT);

    String ccConnectionTimeout =
            System.getProperty(StratosConstants.CLOUD_CONTROLLER_CLIENT_CONNECTION_TIMEOUT) == null ?
                    StratosConstants.DEFAULT_CLIENT_CONNECTION_TIMEOUT :
                    System.getProperty(StratosConstants.CLOUD_CONTROLLER_CLIENT_CONNECTION_TIMEOUT);
    try {
        stub = new CloudControllerServiceStub(ctx, epr);
        stub._getServiceClient().getOptions()
                .setProperty(HTTPConstants.SO_TIMEOUT, Integer.valueOf(ccSocketTimeout));
        stub._getServiceClient().getOptions()
                .setProperty(HTTPConstants.CONNECTION_TIMEOUT, new Integer(ccConnectionTimeout));
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CHUNKED, Constants.VALUE_FALSE);
        stub._getServiceClient().getOptions().setProperty(Constants.Configuration.DISABLE_SOAP_ACTION, Boolean
                .TRUE);
    } catch (AxisFault axisFault) {
        String msg = "Could not initialize cloud controller service client";
        log.error(msg, axisFault);
        throw new AxisFault(msg, axisFault);
    }
}
 

private AutoscalerServiceClient(String epr) throws AxisFault {
    MultiThreadedHttpConnectionManager multiThreadedHttpConnectionManager = new
            MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setDefaultMaxConnectionsPerHost(StratosConstants.AUTOSCALER_CLIENT_MAX_CONNECTIONS_PER_HOST);
    params.setMaxTotalConnections(StratosConstants.AUTOSCALER_CLIENT_MAX_TOTAL_CONNECTIONS);
    multiThreadedHttpConnectionManager.setParams(params);
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);
    ConfigurationContext ctx = ConfigurationContextFactory.createConfigurationContextFromFileSystem(null, null);
    ctx.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);

    String autosclaerSocketTimeout = System.getProperty(StratosConstants.AUTOSCALER_CLIENT_SOCKET_TIMEOUT) == null ?
            StratosConstants.DEFAULT_CLIENT_SOCKET_TIMEOUT :
            System.getProperty(StratosConstants.AUTOSCALER_CLIENT_SOCKET_TIMEOUT);

    String autosclaerConnectionTimeout = System.getProperty(StratosConstants.AUTOSCALER_CLIENT_CONNECTION_TIMEOUT)
            == null ? StratosConstants.DEFAULT_CLIENT_CONNECTION_TIMEOUT :
            System.getProperty(StratosConstants.AUTOSCALER_CLIENT_CONNECTION_TIMEOUT);
    try {
        stub = new AutoscalerServiceStub(ctx, epr);
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.SO_TIMEOUT,
                Integer.valueOf(autosclaerSocketTimeout));
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CONNECTION_TIMEOUT,
                Integer.valueOf(autosclaerConnectionTimeout));
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CHUNKED, Constants.VALUE_FALSE);
        stub._getServiceClient().getOptions().setProperty(Constants.Configuration.DISABLE_SOAP_ACTION, Boolean
                .TRUE);
    } catch (AxisFault axisFault) {
        String msg = "Could not initialize autoscaler service client";
        log.error(msg, axisFault);
        throw new AxisFault(msg, axisFault);
    }
}
 

private StratosManagerServiceClient(String epr) throws AxisFault {
    MultiThreadedHttpConnectionManager multiThreadedHttpConnectionManager = new
            MultiThreadedHttpConnectionManager();
    HttpConnectionManagerParams params = new HttpConnectionManagerParams();
    params.setDefaultMaxConnectionsPerHost(StratosConstants.STRATOS_MANAGER_CLIENT_MAX_CONNECTIONS_PER_HOST);
    params.setMaxTotalConnections(StratosConstants.STRATOS_MANAGER_CLIENT_MAX_TOTAL_CONNECTIONS);
    multiThreadedHttpConnectionManager.setParams(params);
    HttpClient httpClient = new HttpClient(multiThreadedHttpConnectionManager);
    ConfigurationContext ctx = ConfigurationContextFactory.createConfigurationContextFromFileSystem(null, null);
    ctx.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);

    String ccSocketTimeout = System.getProperty(StratosConstants.STRATOS_MANAGER_CLIENT_SOCKET_TIMEOUT) == null ?
            StratosConstants.DEFAULT_CLIENT_SOCKET_TIMEOUT :
            System.getProperty(StratosConstants.STRATOS_MANAGER_CLIENT_SOCKET_TIMEOUT);

    String ccConnectionTimeout = System.getProperty(StratosConstants.STRATOS_MANAGER_CLIENT_CONNECTION_TIMEOUT)
            == null ?
            StratosConstants.DEFAULT_CLIENT_CONNECTION_TIMEOUT :
            System.getProperty(StratosConstants.STRATOS_MANAGER_CLIENT_CONNECTION_TIMEOUT);
    try {
        stub = new StratosManagerServiceStub(ctx, epr);
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.SO_TIMEOUT, Integer.valueOf
                (ccSocketTimeout));
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CONNECTION_TIMEOUT, Integer.valueOf
                (ccConnectionTimeout));
        stub._getServiceClient().getOptions().setProperty(HTTPConstants.CHUNKED, Constants.VALUE_FALSE);
        stub._getServiceClient().getOptions().setProperty(Constants.Configuration.DISABLE_SOAP_ACTION, Boolean
                .TRUE);
    } catch (AxisFault axisFault) {
        String msg = "Could not initialize stratos manager service client";
        log.error(msg, axisFault);
        throw new AxisFault(msg, axisFault);
    }
}
 

/**
 * Configures the HTTP client
 */
private void configureClient() {

  // Set up an HTTPS socket factory that accepts self-signed certs.
  Protocol https = new Protocol("https",
      new DummySSLProtocolSocketFactory(), 443);
  Protocol.registerProtocol("https", https);

  HttpConnectionManagerParams params = connectionManager.getParams();
  params.setConnectionTimeout(timeout);
  params.setSoTimeout(timeout);
  params.setSendBufferSize(BUFFER_SIZE);
  params.setReceiveBufferSize(BUFFER_SIZE);
  params.setMaxTotalConnections(maxThreadsTotal);

  // executeMethod(HttpMethod) seems to ignore the connection timeout on the connection manager.
  // set it explicitly on the HttpClient.
  client.getParams().setConnectionManagerTimeout(timeout);

  HostConfiguration hostConf = client.getHostConfiguration();
  ArrayList headers = new ArrayList();
  // Set the User Agent in the header
  headers.add(new Header("User-Agent", userAgent));
  // prefer English
  headers.add(new Header("Accept-Language", acceptLanguage));
  // prefer UTF-8
  headers.add(new Header("Accept-Charset", "utf-8,ISO-8859-1;q=0.7,*;q=0.7"));
  // prefer understandable formats
  headers.add(new Header("Accept",
          "text/html,application/xml;q=0.9,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"));
  // accept gzipped content
  headers.add(new Header("Accept-Encoding", "x-gzip, gzip, deflate"));
  hostConf.getParams().setParameter("http.default-headers", headers);

  // HTTP proxy server details
  if (useProxy) {
    hostConf.setProxy(proxyHost, proxyPort);

    if (proxyUsername.length() > 0) {

      AuthScope proxyAuthScope = getAuthScope(
          this.proxyHost, this.proxyPort, this.proxyRealm);

      NTCredentials proxyCredentials = new NTCredentials(
          this.proxyUsername, this.proxyPassword,
          this.agentHost, this.proxyRealm);

      client.getState().setProxyCredentials(
          proxyAuthScope, proxyCredentials);
    }
  }

}
 

/**
 * Configures the HTTP client
 */
private void configureClient() {

  // Set up an HTTPS socket factory that accepts self-signed certs.
  ProtocolSocketFactory factory = new SSLProtocolSocketFactory();
  Protocol https = new Protocol("https", factory, 443);
  Protocol.registerProtocol("https", https);

  HttpConnectionManagerParams params = connectionManager.getParams();
  params.setConnectionTimeout(timeout);
  params.setSoTimeout(timeout);
  params.setSendBufferSize(BUFFER_SIZE);
  params.setReceiveBufferSize(BUFFER_SIZE);
  params.setMaxTotalConnections(maxThreadsTotal);

  // executeMethod(HttpMethod) seems to ignore the connection timeout on the connection manager.
  // set it explicitly on the HttpClient.
  client.getParams().setConnectionManagerTimeout(timeout);

  HostConfiguration hostConf = client.getHostConfiguration();
  ArrayList<Header> headers = new ArrayList<Header>();
  // Set the User Agent in the header
  headers.add(new Header("User-Agent", userAgent));
  // prefer English
  headers.add(new Header("Accept-Language", acceptLanguage));
  // prefer UTF-8
  headers.add(new Header("Accept-Charset", "utf-8,ISO-8859-1;q=0.7,*;q=0.7"));
  // prefer understandable formats
  headers.add(new Header("Accept",
          "text/html,application/xml;q=0.9,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"));
  // accept gzipped content
  headers.add(new Header("Accept-Encoding", "x-gzip, gzip, deflate"));
  hostConf.getParams().setParameter("http.default-headers", headers);

  // HTTP proxy server details
  if (useProxy) {
    hostConf.setProxy(proxyHost, proxyPort);

    if (proxyUsername.length() > 0) {

      AuthScope proxyAuthScope = getAuthScope(
          this.proxyHost, this.proxyPort, this.proxyRealm);

      NTCredentials proxyCredentials = new NTCredentials(
          this.proxyUsername, this.proxyPassword,
          Http.agentHost, this.proxyRealm);

      client.getState().setProxyCredentials(
          proxyAuthScope, proxyCredentials);
    }
  }

}