author | michaelm |
Thu, 24 Jan 2019 15:48:05 +0000 | |
changeset 53473 | 9366628d727b |
parent 47216 | 71c04702a3d5 |
child 54155 | b5a73f22b2bd |
child 57112 | d7b54daf5e1a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.net; |
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import java.io.IOException; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.Method; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.Set; |
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/** |
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* Basic SocketImpl that relies on the internal HTTP protocol handler |
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* implementation to perform the HTTP tunneling and authentication. The |
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* sockets impl is swapped out and replaced with the socket from the HTTP |
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* handler after the tunnel is successfully setup. |
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* |
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* @since 1.8 |
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*/ |
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/*package*/ class HttpConnectSocketImpl extends PlainSocketImpl { |
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private static final String httpURLClazzStr = |
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"sun.net.www.protocol.http.HttpURLConnection"; |
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private static final String netClientClazzStr = "sun.net.NetworkClient"; |
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private static final String doTunnelingStr = "doTunneling"; |
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private static final Field httpField; |
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private static final Field serverSocketField; |
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private static final Method doTunneling; |
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private final String server; |
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private InetSocketAddress external_address; |
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private HashMap<Integer, Object> optionsMap = new HashMap<>(); |
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static { |
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try { |
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Class<?> httpClazz = Class.forName(httpURLClazzStr, true, null); |
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httpField = httpClazz.getDeclaredField("http"); |
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doTunneling = httpClazz.getDeclaredMethod(doTunnelingStr); |
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Class<?> netClientClazz = Class.forName(netClientClazzStr, true, null); |
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serverSocketField = netClientClazz.getDeclaredField("serverSocket"); |
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java.security.AccessController.doPrivileged( |
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new java.security.PrivilegedAction<>() { |
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public Void run() { |
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httpField.setAccessible(true); |
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serverSocketField.setAccessible(true); |
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return null; |
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} |
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}); |
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} catch (ReflectiveOperationException x) { |
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throw new InternalError("Should not reach here", x); |
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} |
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} |
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HttpConnectSocketImpl(String server, int port) { |
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this.server = server; |
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this.port = port; |
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} |
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HttpConnectSocketImpl(Proxy proxy) { |
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SocketAddress a = proxy.address(); |
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if ( !(a instanceof InetSocketAddress) ) |
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throw new IllegalArgumentException("Unsupported address type"); |
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InetSocketAddress ad = (InetSocketAddress) a; |
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server = ad.getHostString(); |
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port = ad.getPort(); |
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} |
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@Override |
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protected void connect(SocketAddress endpoint, int timeout) |
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throws IOException |
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{ |
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if (endpoint == null || !(endpoint instanceof InetSocketAddress)) |
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throw new IllegalArgumentException("Unsupported address type"); |
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final InetSocketAddress epoint = (InetSocketAddress)endpoint; |
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final String destHost = epoint.isUnresolved() ? epoint.getHostName() |
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: epoint.getAddress().getHostAddress(); |
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final int destPort = epoint.getPort(); |
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SecurityManager security = System.getSecurityManager(); |
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if (security != null) |
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security.checkConnect(destHost, destPort); |
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// Connect to the HTTP proxy server |
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String urlString = "http://" + destHost + ":" + destPort; |
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Socket httpSocket = privilegedDoTunnel(urlString, timeout); |
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// Success! |
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external_address = epoint; |
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// close the original socket impl and release its descriptor |
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close(); |
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// update the Sockets impl to the impl from the http Socket |
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AbstractPlainSocketImpl psi = (AbstractPlainSocketImpl) httpSocket.impl; |
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this.getSocket().impl = psi; |
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// best effort is made to try and reset options previously set |
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Set<Map.Entry<Integer,Object>> options = optionsMap.entrySet(); |
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try { |
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for(Map.Entry<Integer,Object> entry : options) { |
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psi.setOption(entry.getKey(), entry.getValue()); |
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} |
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} catch (IOException x) { /* gulp! */ } |
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} |
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@Override |
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public void setOption(int opt, Object val) throws SocketException { |
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super.setOption(opt, val); |
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|
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if (external_address != null) |
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return; // we're connected, just return |
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|
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// store options so that they can be re-applied to the impl after connect |
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optionsMap.put(opt, val); |
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} |
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142 |
|
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private Socket privilegedDoTunnel(final String urlString, |
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final int timeout) |
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throws IOException |
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{ |
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try { |
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return java.security.AccessController.doPrivileged( |
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new java.security.PrivilegedExceptionAction<>() { |
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public Socket run() throws IOException { |
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return doTunnel(urlString, timeout); |
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152 |
} |
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153 |
}); |
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} catch (java.security.PrivilegedActionException pae) { |
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throw (IOException) pae.getException(); |
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156 |
} |
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157 |
} |
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158 |
|
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private Socket doTunnel(String urlString, int connectTimeout) |
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160 |
throws IOException |
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161 |
{ |
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Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(server, port)); |
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URL destURL = new URL(urlString); |
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HttpURLConnection conn = (HttpURLConnection) destURL.openConnection(proxy); |
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165 |
conn.setConnectTimeout(connectTimeout); |
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166 |
conn.setReadTimeout(this.timeout); |
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167 |
conn.connect(); |
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168 |
doTunneling(conn); |
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169 |
try { |
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170 |
Object httpClient = httpField.get(conn); |
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return (Socket) serverSocketField.get(httpClient); |
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172 |
} catch (IllegalAccessException x) { |
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173 |
throw new InternalError("Should not reach here", x); |
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174 |
} |
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175 |
} |
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176 |
|
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177 |
private void doTunneling(HttpURLConnection conn) { |
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178 |
try { |
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179 |
doTunneling.invoke(conn); |
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180 |
} catch (ReflectiveOperationException x) { |
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181 |
throw new InternalError("Should not reach here", x); |
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182 |
} |
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183 |
} |
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184 |
|
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185 |
@Override |
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186 |
protected InetAddress getInetAddress() { |
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187 |
if (external_address != null) |
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188 |
return external_address.getAddress(); |
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189 |
else |
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190 |
return super.getInetAddress(); |
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191 |
} |
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192 |
|
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193 |
@Override |
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194 |
protected int getPort() { |
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|
195 |
if (external_address != null) |
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|
196 |
return external_address.getPort(); |
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|
197 |
else |
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198 |
return super.getPort(); |
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199 |
} |
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200 |
} |