feat(jdk8): move files to new folder to avoid resources compiled.
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206
jdkSrc/jdk8/java/util/logging/SocketHandler.java
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206
jdkSrc/jdk8/java/util/logging/SocketHandler.java
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/*
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* Copyright (c) 2000, 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.util.logging;
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import java.io.*;
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import java.net.*;
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/**
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* Simple network logging <tt>Handler</tt>.
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* <p>
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* <tt>LogRecords</tt> are published to a network stream connection. By default
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* the <tt>XMLFormatter</tt> class is used for formatting.
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* <p>
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* <b>Configuration:</b>
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* By default each <tt>SocketHandler</tt> is initialized using the following
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* <tt>LogManager</tt> configuration properties where <tt><handler-name></tt>
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* refers to the fully-qualified class name of the handler.
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* If properties are not defined
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* (or have invalid values) then the specified default values are used.
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* <ul>
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* <li> <handler-name>.level
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* specifies the default level for the <tt>Handler</tt>
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* (defaults to <tt>Level.ALL</tt>). </li>
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* <li> <handler-name>.filter
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* specifies the name of a <tt>Filter</tt> class to use
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* (defaults to no <tt>Filter</tt>). </li>
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* <li> <handler-name>.formatter
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* specifies the name of a <tt>Formatter</tt> class to use
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* (defaults to <tt>java.util.logging.XMLFormatter</tt>). </li>
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* <li> <handler-name>.encoding
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* the name of the character set encoding to use (defaults to
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* the default platform encoding). </li>
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* <li> <handler-name>.host
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* specifies the target host name to connect to (no default). </li>
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* <li> <handler-name>.port
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* specifies the target TCP port to use (no default). </li>
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* </ul>
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* <p>
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* For example, the properties for {@code SocketHandler} would be:
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* <ul>
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* <li> java.util.logging.SocketHandler.level=INFO </li>
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* <li> java.util.logging.SocketHandler.formatter=java.util.logging.SimpleFormatter </li>
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* </ul>
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* <p>
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* For a custom handler, e.g. com.foo.MyHandler, the properties would be:
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* <ul>
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* <li> com.foo.MyHandler.level=INFO </li>
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* <li> com.foo.MyHandler.formatter=java.util.logging.SimpleFormatter </li>
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* </ul>
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* <p>
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* The output IO stream is buffered, but is flushed after each
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* <tt>LogRecord</tt> is written.
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*
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* @since 1.4
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*/
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public class SocketHandler extends StreamHandler {
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private Socket sock;
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private String host;
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private int port;
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// Private method to configure a SocketHandler from LogManager
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// properties and/or default values as specified in the class
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// javadoc.
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private void configure() {
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LogManager manager = LogManager.getLogManager();
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String cname = getClass().getName();
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setLevel(manager.getLevelProperty(cname +".level", Level.ALL));
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setFilter(manager.getFilterProperty(cname +".filter", null));
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setFormatter(manager.getFormatterProperty(cname +".formatter", new XMLFormatter()));
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try {
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setEncoding(manager.getStringProperty(cname +".encoding", null));
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} catch (Exception ex) {
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try {
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setEncoding(null);
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} catch (Exception ex2) {
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// doing a setEncoding with null should always work.
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// assert false;
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}
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}
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port = manager.getIntProperty(cname + ".port", 0);
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host = manager.getStringProperty(cname + ".host", null);
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}
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/**
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* Create a <tt>SocketHandler</tt>, using only <tt>LogManager</tt> properties
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* (or their defaults).
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* @throws IllegalArgumentException if the host or port are invalid or
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* are not specified as LogManager properties.
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* @throws IOException if we are unable to connect to the target
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* host and port.
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*/
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public SocketHandler() throws IOException {
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// We are going to use the logging defaults.
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sealed = false;
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configure();
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try {
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connect();
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} catch (IOException ix) {
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System.err.println("SocketHandler: connect failed to " + host + ":" + port);
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throw ix;
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}
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sealed = true;
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}
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/**
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* Construct a <tt>SocketHandler</tt> using a specified host and port.
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*
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* The <tt>SocketHandler</tt> is configured based on <tt>LogManager</tt>
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* properties (or their default values) except that the given target host
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* and port arguments are used. If the host argument is empty, but not
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* null String then the localhost is used.
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*
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* @param host target host.
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* @param port target port.
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*
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* @throws IllegalArgumentException if the host or port are invalid.
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* @throws IOException if we are unable to connect to the target
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* host and port.
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*/
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public SocketHandler(String host, int port) throws IOException {
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sealed = false;
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configure();
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sealed = true;
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this.port = port;
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this.host = host;
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connect();
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}
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private void connect() throws IOException {
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// Check the arguments are valid.
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if (port == 0) {
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throw new IllegalArgumentException("Bad port: " + port);
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}
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if (host == null) {
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throw new IllegalArgumentException("Null host name: " + host);
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}
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// Try to open a new socket.
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sock = new Socket(host, port);
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OutputStream out = sock.getOutputStream();
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BufferedOutputStream bout = new BufferedOutputStream(out);
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setOutputStream(bout);
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}
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/**
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* Close this output stream.
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*
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* @exception SecurityException if a security manager exists and if
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* the caller does not have <tt>LoggingPermission("control")</tt>.
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*/
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@Override
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public synchronized void close() throws SecurityException {
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super.close();
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if (sock != null) {
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try {
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sock.close();
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} catch (IOException ix) {
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// drop through.
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}
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}
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sock = null;
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}
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/**
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* Format and publish a <tt>LogRecord</tt>.
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*
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* @param record description of the log event. A null record is
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* silently ignored and is not published
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*/
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@Override
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public synchronized void publish(LogRecord record) {
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if (!isLoggable(record)) {
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return;
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}
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super.publish(record);
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flush();
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}
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}
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