bundles/org.eclipse.core.net/src/org/eclipse/core/internal/net/proxy/win32/winhttp/WinHttpProxyProvider.java - gerrit/platform/eclipse.platform.team - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2017 compeople AG and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  * 	compeople AG (Stefan Liebig) - initial API and implementation
  *  IBM Corporation - Add proxy providers layer on the top of ProxyManager (bug 255616)
  *******************************************************************************/
 package org.eclipse.core.internal.net.proxy.win32.winhttp;

 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

 import org.eclipse.core.internal.net.Activator;
 import org.eclipse.core.internal.net.ProxyData;
 import org.eclipse.core.net.proxy.IProxyData;

 /**
  * The <code>WinHttpProxyProvivider</code> gets its settings from the
  * "internet options &gt;&gt; connection settings". For this it uses the Windows
  * WinHttp API.
  *
  * @see "http://msdn2.microsoft.com/en-us/library/aa382925(VS.85).aspx"
  */
 public class WinHttpProxyProvider {

 	private WinHttpCurrentUserIEProxyConfig proxyConfig;
 	private StaticProxyConfig staticProxyConfig;
 	private String wpadAutoConfigUrl;
 	private boolean tryWpadGetUrl;
 	private boolean tryPac;

 	// Buffered delayed logging to avoid deadlocks. Logging itself might trigger
 	// through listeners/appenders other threads to do some communication which in
 	// turn uses this proxy provider.
 	private String logMessage;
 	private Throwable logThrowable;

 	private static final ProxyData[] EMPTY_PROXIES = new ProxyData[0];
 	private static final String MY_NAME = WinHttpProxyProvider.class.getName();

 	/**
 	 * Retrieve the proxies that are suitable for the given uri. An empty array
 	 * of proxies indicates that no proxy should be used (direct connection).
 	 * This method considers already the �no proxy for� definition of the
 	 * internet options dialog.
 	 *
 	 * @param uri
 	 * @return an array of proxies
 	 */
 	public IProxyData[] getProxyData(URI uri) {
 		logMessage = null;
 		IProxyData[] proxies;
 		synchronized (this) {
 			proxies = getProxyDataUnsynchronized(uri);
 		}
 		if (logMessage != null)
 			Activator.logError(logMessage, logThrowable);
 		return proxies;
 	}

 	public IProxyData[] getProxyData() {
 		logMessage = null;
 		IProxyData[] proxies;
 		synchronized (this) {
 			proxies = getProxyDataUnsynchronized();
 		}
 		if (logMessage != null)
 			Activator.logError(logMessage, logThrowable);
 		return proxies;
 	}

 	private IProxyData[] getProxyDataUnsynchronized() {
 		WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
 		if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
 			logError(
 					"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			return EMPTY_PROXIES;
 		}

 		// Explicit proxies defined?
 		if (newProxyConfig.isStaticProxy()) {
 			// Yes, let�s see if we are still up-to-date
 			if (newProxyConfig.staticProxyChanged(proxyConfig))
 				staticProxyConfig = new StaticProxyConfig(newProxyConfig
 						.getProxy(), newProxyConfig.getProxyBypass());

 			return staticProxyConfig.getProxyData();
 		}

 		// Let�s find out if auto detect has changed.
 		if (newProxyConfig.autoDetectChanged(proxyConfig)) {
 			tryWpadGetUrl = newProxyConfig.isAutoDetect();
 			if (!tryWpadGetUrl)
 				wpadAutoConfigUrl = null;
 		}

 		// Let�s find out if pac file url has changed.
 		if (newProxyConfig.autoConfigUrlChanged(proxyConfig))
 			tryPac = newProxyConfig.isAutoConfigUrl();

 		if (!tryPac && wpadAutoConfigUrl == null)
 			return new IProxyData[0];

 		ProxyData data = new ProxyData(IProxyData.HTTP_PROXY_TYPE, "", -1, //$NON-NLS-1$
 				false, "WINDOWS_IE"); //$NON-NLS-1$
 		data.setDynamic(true);
 		return new IProxyData[] { data };
 	}

 	public String[] getNonProxiedHosts() {
 		logMessage = null;
 		String[] hosts;
 		synchronized (this) {
 			hosts = getNonProxiedHostsUnsynchronized();
 		}
 		if (logMessage != null)
 			Activator.logError(logMessage, logThrowable);
 		return hosts;
 	}

 	private String[] getNonProxiedHostsUnsynchronized() {
 		WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
 		if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
 			logError(
 					"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			return new String[0];
 		}
 		if (newProxyConfig.isStaticProxy()) {
 			// Yes, let�s see if we are still up-to-date
 			if (newProxyConfig.staticProxyChanged(proxyConfig))
 				staticProxyConfig = new StaticProxyConfig(newProxyConfig
 						.getProxy(), newProxyConfig.getProxyBypass());
 			return staticProxyConfig.getNonProxiedHosts();
 		}
 		return null;
 	}

 	/**
 	 * This method is the not synchronized counterpart of
 	 * <code>getProxyData</code>.
 	 *
 	 * @param uri
 	 * @return an array of proxies
 	 */
 	private IProxyData[] getProxyDataUnsynchronized(URI uri) {
 		WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
 		if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
 			logError(
 					"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			return EMPTY_PROXIES;
 		}

 		List<IProxyData> proxies = new ArrayList<>();

 		// Let�s find out if auto detect has changed.
 		if (newProxyConfig.autoDetectChanged(proxyConfig)) {
 			tryWpadGetUrl = newProxyConfig.isAutoDetect();
 			if (!tryWpadGetUrl)
 				wpadAutoConfigUrl = null;
 		}

 		// Let�s find out if pac file url has changed.
 		if (newProxyConfig.autoConfigUrlChanged(proxyConfig))
 			tryPac = newProxyConfig.isAutoConfigUrl();

 		// Explicit proxies defined?
 		if (newProxyConfig.isStaticProxy()) {
 			// Yes, let�s see if we are still up-to-date
 			if (newProxyConfig.staticProxyChanged(proxyConfig))
 				staticProxyConfig = new StaticProxyConfig(newProxyConfig
 						.getProxy(), newProxyConfig.getProxyBypass());

 			staticProxyConfig.select(uri, proxies);
 		}
 		proxyConfig = newProxyConfig;

 		if (!tryPac && wpadAutoConfigUrl == null)
 			return toArray(proxies);

 		// Create the WinHTTP session.
 		int hHttpSession = WinHttp.open(MY_NAME,
 				WinHttpProxyInfo.WINHTTP_ACCESS_TYPE_NO_PROXY,
 				WinHttp.NO_PROXY_NAME, WinHttp.NO_PROXY_BYPASS, 0);
 		if (hHttpSession == 0) {
 			logError(
 					"WinHttp.Open failed with error'" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			return toArray(proxies);
 		}

 		try {
 			pacSelect(hHttpSession, uri, proxies);
 			wpadSelect(hHttpSession, uri, proxies);
 		} finally {
 			WinHttp.closeHandle(hHttpSession);
 		}

 		return toArray(proxies);
 	}

 	protected void pacSelect(int hHttpSession, URI uri, List<IProxyData> proxies) {
 		if (!tryPac)
 			return;
 		List<IProxyData> pacProxies = pacSelect(hHttpSession, proxyConfig
 				.getAutoConfigUrl(), uri);
 		if (pacProxies == null)
 			tryPac = false;
 		else
 			proxies.addAll(pacProxies);

 	}

 	protected void wpadSelect(int hHttpSession, URI uri, List<IProxyData> proxies) {
 		if (tryWpadGetUrl) {
 			tryWpadGetUrl = false;
 			AutoProxyHolder autoProxyHolder = new AutoProxyHolder();
 			autoProxyHolder
 					.setAutoDetectFlags(WinHttpAutoProxyOptions.WINHTTP_AUTO_DETECT_TYPE_DHCP
 							| WinHttpAutoProxyOptions.WINHTTP_AUTO_DETECT_TYPE_DNS_A);
 			boolean ok = WinHttp.detectAutoProxyConfigUrl(autoProxyHolder);
 			if (!ok) {
 				logError(
 						"WinHttp.DetectAutoProxyConfigUrl for wpad failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 				return;
 			}
 			wpadAutoConfigUrl = autoProxyHolder.getAutoConfigUrl();
 		}
 		if (wpadAutoConfigUrl == null)
 			return;
 		List<IProxyData> wpadProxies = pacSelect(hHttpSession, wpadAutoConfigUrl, uri);
 		if (wpadProxies == null)
 			wpadAutoConfigUrl = null;
 		else
 			proxies.addAll(wpadProxies);
 	}

 	/**
 	 * Retrieve the proxies from the specified pac file url.
 	 *
 	 * @param hHttpSession
 	 * @param configUrl
 	 * @param uri
 	 * @return a list of proxies (IProxyData) or null in case of an error.
 	 */
 	protected List<IProxyData> pacSelect(int hHttpSession, String configUrl, URI uri) {
 		// Don�t ask for anything else than http or https since that is not
 		// supported by WinHttp pac file support:
 		// ERROR_WINHTTP_UNRECOGNIZED_SCHEME
 		if (!IProxyData.HTTP_PROXY_TYPE.equalsIgnoreCase(uri.getScheme())
 				&& !IProxyData.HTTPS_PROXY_TYPE.equalsIgnoreCase(uri
 						.getScheme()))
 			return Collections.emptyList();
 		// Set up the autoproxy call.
 		WinHttpAutoProxyOptions autoProxyOptions = new WinHttpAutoProxyOptions();
 		autoProxyOptions
 				.setFlags(WinHttpAutoProxyOptions.WINHTTP_AUTOPROXY_CONFIG_URL);
 		autoProxyOptions.setAutoConfigUrl(configUrl);
 		autoProxyOptions.setAutoLogonIfChallenged(true);
 		WinHttpProxyInfo proxyInfo = new WinHttpProxyInfo();

 		boolean ok = WinHttp.getProxyForUrl(hHttpSession, uri.toString(),
 				autoProxyOptions, proxyInfo);
 		if (!ok) {
 			logError(
 					"WinHttp.GetProxyForUrl for pac failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			return null;
 		}
 		ProxyBypass proxyBypass = new ProxyBypass(proxyInfo.getProxyBypass());
 		if (proxyBypass.bypassProxyFor(uri))
 			return Collections.emptyList();
 		return ProxyProviderUtil.getProxies(proxyInfo.getProxy());
 	}

 	private void logError(String message, Throwable throwable) {
 		this.logMessage = message;
 		this.logThrowable = throwable;
 	}

 	private static IProxyData[] toArray(List<IProxyData> proxies) {
 		return proxies.toArray(new IProxyData[proxies.size()]);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2008, 2017 compeople AG and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* compeople AG (Stefan Liebig) - initial API and implementation
	* IBM Corporation - Add proxy providers layer on the top of ProxyManager (bug 255616)
	*******************************************************************************/
	package org.eclipse.core.internal.net.proxy.win32.winhttp;

	import java.net.URI;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;

	import org.eclipse.core.internal.net.Activator;
	import org.eclipse.core.internal.net.ProxyData;
	import org.eclipse.core.net.proxy.IProxyData;

	/**
	* The <code>WinHttpProxyProvivider</code> gets its settings from the
	* "internet options >> connection settings". For this it uses the Windows
	* WinHttp API.
	*
	* @see "http://msdn2.microsoft.com/en-us/library/aa382925(VS.85).aspx"
	*/
	public class WinHttpProxyProvider {

	private WinHttpCurrentUserIEProxyConfig proxyConfig;
	private StaticProxyConfig staticProxyConfig;
	private String wpadAutoConfigUrl;
	private boolean tryWpadGetUrl;
	private boolean tryPac;

	// Buffered delayed logging to avoid deadlocks. Logging itself might trigger
	// through listeners/appenders other threads to do some communication which in
	// turn uses this proxy provider.
	private String logMessage;
	private Throwable logThrowable;

	private static final ProxyData[] EMPTY_PROXIES = new ProxyData[0];
	private static final String MY_NAME = WinHttpProxyProvider.class.getName();

	/**
	* Retrieve the proxies that are suitable for the given uri. An empty array
	* of proxies indicates that no proxy should be used (direct connection).
	* This method considers already the �no proxy for� definition of the
	* internet options dialog.
	*
	* @param uri
	* @return an array of proxies
	*/
	public IProxyData[] getProxyData(URI uri) {
	logMessage = null;
	IProxyData[] proxies;
	synchronized (this) {
	proxies = getProxyDataUnsynchronized(uri);
	}
	if (logMessage != null)
	Activator.logError(logMessage, logThrowable);
	return proxies;
	}

	public IProxyData[] getProxyData() {
	logMessage = null;
	IProxyData[] proxies;
	synchronized (this) {
	proxies = getProxyDataUnsynchronized();
	}
	if (logMessage != null)
	Activator.logError(logMessage, logThrowable);
	return proxies;
	}

	private IProxyData[] getProxyDataUnsynchronized() {
	WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
	if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
	logError(
	"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return EMPTY_PROXIES;
	}

	// Explicit proxies defined?
	if (newProxyConfig.isStaticProxy()) {
	// Yes, let�s see if we are still up-to-date
	if (newProxyConfig.staticProxyChanged(proxyConfig))
	staticProxyConfig = new StaticProxyConfig(newProxyConfig
	.getProxy(), newProxyConfig.getProxyBypass());

	return staticProxyConfig.getProxyData();
	}

	// Let�s find out if auto detect has changed.
	if (newProxyConfig.autoDetectChanged(proxyConfig)) {
	tryWpadGetUrl = newProxyConfig.isAutoDetect();
	if (!tryWpadGetUrl)
	wpadAutoConfigUrl = null;
	}

	// Let�s find out if pac file url has changed.
	if (newProxyConfig.autoConfigUrlChanged(proxyConfig))
	tryPac = newProxyConfig.isAutoConfigUrl();

	if (!tryPac && wpadAutoConfigUrl == null)
	return new IProxyData[0];

	ProxyData data = new ProxyData(IProxyData.HTTP_PROXY_TYPE, "", -1, //$NON-NLS-1$
	false, "WINDOWS_IE"); //$NON-NLS-1$
	data.setDynamic(true);
	return new IProxyData[] { data };
	}

	public String[] getNonProxiedHosts() {
	logMessage = null;
	String[] hosts;
	synchronized (this) {
	hosts = getNonProxiedHostsUnsynchronized();
	}
	if (logMessage != null)
	Activator.logError(logMessage, logThrowable);
	return hosts;
	}

	private String[] getNonProxiedHostsUnsynchronized() {
	WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
	if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
	logError(
	"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return new String[0];
	}
	if (newProxyConfig.isStaticProxy()) {
	// Yes, let�s see if we are still up-to-date
	if (newProxyConfig.staticProxyChanged(proxyConfig))
	staticProxyConfig = new StaticProxyConfig(newProxyConfig
	.getProxy(), newProxyConfig.getProxyBypass());
	return staticProxyConfig.getNonProxiedHosts();
	}
	return null;
	}

	/**
	* This method is the not synchronized counterpart of
	* <code>getProxyData</code>.
	*
	* @param uri
	* @return an array of proxies
	*/
	private IProxyData[] getProxyDataUnsynchronized(URI uri) {
	WinHttpCurrentUserIEProxyConfig newProxyConfig = new WinHttpCurrentUserIEProxyConfig();
	if (!WinHttp.getIEProxyConfigForCurrentUser(newProxyConfig)) {
	logError(
	"WinHttp.GetIEProxyConfigForCurrentUser failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return EMPTY_PROXIES;
	}

	List<IProxyData> proxies = new ArrayList<>();

	// Let�s find out if auto detect has changed.
	if (newProxyConfig.autoDetectChanged(proxyConfig)) {
	tryWpadGetUrl = newProxyConfig.isAutoDetect();
	if (!tryWpadGetUrl)
	wpadAutoConfigUrl = null;
	}

	// Let�s find out if pac file url has changed.
	if (newProxyConfig.autoConfigUrlChanged(proxyConfig))
	tryPac = newProxyConfig.isAutoConfigUrl();

	// Explicit proxies defined?
	if (newProxyConfig.isStaticProxy()) {
	// Yes, let�s see if we are still up-to-date
	if (newProxyConfig.staticProxyChanged(proxyConfig))
	staticProxyConfig = new StaticProxyConfig(newProxyConfig
	.getProxy(), newProxyConfig.getProxyBypass());

	staticProxyConfig.select(uri, proxies);
	}
	proxyConfig = newProxyConfig;

	if (!tryPac && wpadAutoConfigUrl == null)
	return toArray(proxies);

	// Create the WinHTTP session.
	int hHttpSession = WinHttp.open(MY_NAME,
	WinHttpProxyInfo.WINHTTP_ACCESS_TYPE_NO_PROXY,
	WinHttp.NO_PROXY_NAME, WinHttp.NO_PROXY_BYPASS, 0);
	if (hHttpSession == 0) {
	logError(
	"WinHttp.Open failed with error'" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return toArray(proxies);
	}

	try {
	pacSelect(hHttpSession, uri, proxies);
	wpadSelect(hHttpSession, uri, proxies);
	} finally {
	WinHttp.closeHandle(hHttpSession);
	}

	return toArray(proxies);
	}

	protected void pacSelect(int hHttpSession, URI uri, List<IProxyData> proxies) {
	if (!tryPac)
	return;
	List<IProxyData> pacProxies = pacSelect(hHttpSession, proxyConfig
	.getAutoConfigUrl(), uri);
	if (pacProxies == null)
	tryPac = false;
	else
	proxies.addAll(pacProxies);

	}

	protected void wpadSelect(int hHttpSession, URI uri, List<IProxyData> proxies) {
	if (tryWpadGetUrl) {
	tryWpadGetUrl = false;
	AutoProxyHolder autoProxyHolder = new AutoProxyHolder();
	autoProxyHolder
	.setAutoDetectFlags(WinHttpAutoProxyOptions.WINHTTP_AUTO_DETECT_TYPE_DHCP
	\| WinHttpAutoProxyOptions.WINHTTP_AUTO_DETECT_TYPE_DNS_A);
	boolean ok = WinHttp.detectAutoProxyConfigUrl(autoProxyHolder);
	if (!ok) {
	logError(
	"WinHttp.DetectAutoProxyConfigUrl for wpad failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return;
	}
	wpadAutoConfigUrl = autoProxyHolder.getAutoConfigUrl();
	}
	if (wpadAutoConfigUrl == null)
	return;
	List<IProxyData> wpadProxies = pacSelect(hHttpSession, wpadAutoConfigUrl, uri);
	if (wpadProxies == null)
	wpadAutoConfigUrl = null;
	else
	proxies.addAll(wpadProxies);
	}

	/**
	* Retrieve the proxies from the specified pac file url.
	*
	* @param hHttpSession
	* @param configUrl
	* @param uri
	* @return a list of proxies (IProxyData) or null in case of an error.
	*/
	protected List<IProxyData> pacSelect(int hHttpSession, String configUrl, URI uri) {
	// Don�t ask for anything else than http or https since that is not
	// supported by WinHttp pac file support:
	// ERROR_WINHTTP_UNRECOGNIZED_SCHEME
	if (!IProxyData.HTTP_PROXY_TYPE.equalsIgnoreCase(uri.getScheme())
	&& !IProxyData.HTTPS_PROXY_TYPE.equalsIgnoreCase(uri
	.getScheme()))
	return Collections.emptyList();
	// Set up the autoproxy call.
	WinHttpAutoProxyOptions autoProxyOptions = new WinHttpAutoProxyOptions();
	autoProxyOptions
	.setFlags(WinHttpAutoProxyOptions.WINHTTP_AUTOPROXY_CONFIG_URL);
	autoProxyOptions.setAutoConfigUrl(configUrl);
	autoProxyOptions.setAutoLogonIfChallenged(true);
	WinHttpProxyInfo proxyInfo = new WinHttpProxyInfo();

	boolean ok = WinHttp.getProxyForUrl(hHttpSession, uri.toString(),
	autoProxyOptions, proxyInfo);
	if (!ok) {
	logError(
	"WinHttp.GetProxyForUrl for pac failed with error '" + WinHttp.getLastErrorMessage() + "' #" + WinHttp.getLastError() + ".", null); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	return null;
	}
	ProxyBypass proxyBypass = new ProxyBypass(proxyInfo.getProxyBypass());
	if (proxyBypass.bypassProxyFor(uri))
	return Collections.emptyList();
	return ProxyProviderUtil.getProxies(proxyInfo.getProxy());
	}

	private void logError(String message, Throwable throwable) {
	this.logMessage = message;
	this.logThrowable = throwable;
	}

	private static IProxyData[] toArray(List<IProxyData> proxies) {
	return proxies.toArray(new IProxyData[proxies.size()]);
	}

	}