author | alanb |
Thu, 08 Feb 2018 10:55:21 +0000 | |
changeset 48761 | 74c1fa26435a |
parent 47216 | 71c04702a3d5 |
child 49001 | ce06058197a4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2018, 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 sun.nio.ch; |
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import java.io.IOException; |
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import java.net.InetAddress; |
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import java.net.InetSocketAddress; |
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import java.net.ServerSocket; |
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import java.net.Socket; |
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import java.net.SocketAddress; |
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import java.net.SocketException; |
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import java.net.SocketTimeoutException; |
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import java.net.StandardSocketOptions; |
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import java.nio.channels.ClosedChannelException; |
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import java.nio.channels.IllegalBlockingModeException; |
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import java.nio.channels.NotYetBoundException; |
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import java.nio.channels.ServerSocketChannel; |
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import java.nio.channels.SocketChannel; |
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// Make a server-socket channel look like a server socket. |
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// |
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// The methods in this class are defined in exactly the same order as in |
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// java.net.ServerSocket so as to simplify tracking future changes to that |
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// class. |
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// |
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class ServerSocketAdaptor // package-private |
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extends ServerSocket |
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{ |
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// The channel being adapted |
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private final ServerSocketChannelImpl ssc; |
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// Timeout "option" value for accepts |
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private volatile int timeout; |
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public static ServerSocket create(ServerSocketChannelImpl ssc) { |
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try { |
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return new ServerSocketAdaptor(ssc); |
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} catch (IOException x) { |
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throw new Error(x); |
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} |
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} |
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// ## super will create a useless impl |
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private ServerSocketAdaptor(ServerSocketChannelImpl ssc) |
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throws IOException |
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{ |
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this.ssc = ssc; |
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} |
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public void bind(SocketAddress local) throws IOException { |
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bind(local, 50); |
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} |
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public void bind(SocketAddress local, int backlog) throws IOException { |
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if (local == null) |
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local = new InetSocketAddress(0); |
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try { |
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ssc.bind(local, backlog); |
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} catch (Exception x) { |
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Net.translateException(x); |
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} |
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} |
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public InetAddress getInetAddress() { |
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if (!ssc.isBound()) |
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return null; |
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return Net.getRevealedLocalAddress(ssc.localAddress()).getAddress(); |
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} |
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public int getLocalPort() { |
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if (!ssc.isBound()) |
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return -1; |
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return Net.asInetSocketAddress(ssc.localAddress()).getPort(); |
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} |
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public Socket accept() throws IOException { |
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synchronized (ssc.blockingLock()) { |
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try { |
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if (!ssc.isBound()) |
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throw new NotYetBoundException(); |
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if (timeout == 0) { |
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// for compatibility reasons: accept connection if available |
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// when configured non-blocking |
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SocketChannel sc = ssc.accept(); |
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if (sc == null && !ssc.isBlocking()) |
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throw new IllegalBlockingModeException(); |
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return sc.socket(); |
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} |
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if (!ssc.isBlocking()) |
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throw new IllegalBlockingModeException(); |
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ssc.configureBlocking(false); |
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try { |
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SocketChannel sc; |
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if ((sc = ssc.accept()) != null) |
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return sc.socket(); |
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long to = timeout; |
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for (;;) { |
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if (!ssc.isOpen()) |
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throw new ClosedChannelException(); |
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long st = System.currentTimeMillis(); |
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int result = ssc.poll(Net.POLLIN, to); |
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if (result > 0 && ((sc = ssc.accept()) != null)) |
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return sc.socket(); |
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to -= System.currentTimeMillis() - st; |
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if (to <= 0) |
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throw new SocketTimeoutException(); |
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} |
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} finally { |
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try { |
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ssc.configureBlocking(true); |
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} catch (ClosedChannelException e) { } |
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} |
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} catch (Exception x) { |
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Net.translateException(x); |
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assert false; |
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return null; // Never happens |
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} |
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} |
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} |
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public void close() throws IOException { |
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ssc.close(); |
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} |
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public ServerSocketChannel getChannel() { |
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return ssc; |
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} |
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public boolean isBound() { |
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return ssc.isBound(); |
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} |
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public boolean isClosed() { |
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return !ssc.isOpen(); |
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} |
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public void setSoTimeout(int timeout) throws SocketException { |
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this.timeout = timeout; |
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} |
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public int getSoTimeout() throws SocketException { |
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return timeout; |
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} |
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public void setReuseAddress(boolean on) throws SocketException { |
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try { |
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ssc.setOption(StandardSocketOptions.SO_REUSEADDR, on); |
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} catch (IOException x) { |
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Net.translateToSocketException(x); |
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} |
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} |
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public boolean getReuseAddress() throws SocketException { |
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try { |
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return ssc.getOption(StandardSocketOptions.SO_REUSEADDR).booleanValue(); |
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} catch (IOException x) { |
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Net.translateToSocketException(x); |
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return false; // Never happens |
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} |
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} |
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public String toString() { |
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if (!isBound()) |
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return "ServerSocket[unbound]"; |
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return "ServerSocket[addr=" + getInetAddress() + |
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",localport=" + getLocalPort() + "]"; |
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} |
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public void setReceiveBufferSize(int size) throws SocketException { |
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// size 0 valid for ServerSocketChannel, invalid for ServerSocket |
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if (size <= 0) |
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throw new IllegalArgumentException("size cannot be 0 or negative"); |
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try { |
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ssc.setOption(StandardSocketOptions.SO_RCVBUF, size); |
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} catch (IOException x) { |
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Net.translateToSocketException(x); |
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} |
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} |
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public int getReceiveBufferSize() throws SocketException { |
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try { |
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return ssc.getOption(StandardSocketOptions.SO_RCVBUF).intValue(); |
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} catch (IOException x) { |
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Net.translateToSocketException(x); |
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return -1; // Never happens |
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} |
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} |
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} |