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/** |
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$Id$ |
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3 |
|
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16 Aug 07 |
jari |
Copyright (C) 2006 Nicklas Nordborg |
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5 |
|
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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8 |
|
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BASE is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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jari |
as published by the Free Software Foundation; either version 3 |
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of the License, or (at your option) any later version. |
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13 |
|
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BASE is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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18 |
|
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You should have received a copy of the GNU General Public License |
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jari |
along with BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.util; |
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23 |
|
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import java.io.BufferedReader; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.InputStreamReader; |
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import java.io.PrintWriter; |
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import java.io.Reader; |
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import java.io.Writer; |
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import java.net.InetAddress; |
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import java.net.ServerSocket; |
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import java.net.Socket; |
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import java.net.UnknownHostException; |
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import java.nio.channels.ServerSocketChannel; |
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|
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|
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/** |
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This class contains some useful methods when working with sockets. Mainly |
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for easy reading and writing to/from the sockets, and also for closing |
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sockets without throwing exceptions. |
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42 |
|
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@author nicklas |
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@version 2.0 |
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@base.modified $Date$ |
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*/ |
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public class SocketUtil |
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{ |
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|
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private static InetAddress LOCAL_HOST = null; |
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static |
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{ |
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try |
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{ |
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LOCAL_HOST = InetAddress.getLocalHost(); |
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} |
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catch (Throwable t) |
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{ |
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t.printStackTrace(); |
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} |
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} |
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|
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/** |
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Send output to a socket. |
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@param socket The socket to send to |
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@param output The output to send |
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@param shutdownOutput TRUE to close the output stream, FALSE to leave it open |
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@throws IOException If there is an error |
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*/ |
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public static void send(Socket socket, String output, boolean shutdownOutput) |
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throws IOException |
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{ |
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PrintWriter out = new PrintWriter(socket.getOutputStream()); |
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out.println(output); |
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out.flush(); |
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if (shutdownOutput) socket.shutdownOutput(); |
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} |
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|
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/** |
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Read input from a socket. |
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@param socket The socket to read from |
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@param shutdownInput If the input stream should be closed or not |
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@return The data that was read |
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@throws IOException If there is an error |
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*/ |
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public static String read(Socket socket, boolean shutdownInput) |
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throws IOException |
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{ |
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StringBuilder input = new StringBuilder(); |
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BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); |
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boolean more = true; |
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while (more) |
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{ |
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String line = in.readLine(); |
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if (line == null) |
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{ |
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more = false; |
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} |
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else |
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{ |
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if (input.length() > 0) input.append("\n"); |
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input.append(line); |
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} |
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} |
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if (shutdownInput) socket.shutdownInput(); |
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return input.toString(); |
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} |
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|
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/** |
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Close a socket without throwing any exceptions. |
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@param socket The socket to close |
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*/ |
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public static void close(Socket socket) |
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{ |
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if (socket == null) return; |
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try |
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{ |
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socket.close(); |
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} |
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catch (IOException ex) |
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{} |
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} |
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|
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/** |
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Close a server socket channel without throwing any exceptions. |
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@param socket The socket to close |
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*/ |
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public static void close(ServerSocketChannel socket) |
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{ |
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if (socket == null) return; |
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try |
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{ |
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socket.close(); |
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} |
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catch (IOException ex) |
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{} |
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} |
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|
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/** |
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Close a server socket without throwing any exceptions. |
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@param socket The socket to close |
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*/ |
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public static void close(ServerSocket socket) |
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{ |
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if (socket == null) return; |
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try |
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{ |
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socket.close(); |
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} |
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catch (IOException ex) |
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{} |
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} |
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|
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|
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/** |
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Close a <code>Writer</code> without throwing any exceptions. |
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@param out The writer to close |
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158 |
*/ |
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public static void close(Writer out) |
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{ |
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if (out == null) return; |
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try |
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{ |
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out.close(); |
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} |
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catch (IOException ex) |
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{} |
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} |
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|
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/** |
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Close a <code>Reader</code> without throwing any exceptions. |
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@param in The reader to close |
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*/ |
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public static void close(Reader in) |
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{ |
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if (in == null) return; |
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try |
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{ |
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in.close(); |
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} |
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catch (IOException ex) |
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182 |
{} |
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} |
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|
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/** |
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Close an <code>InputStream</code> without throwing any exceptions. |
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@param in The stream to close |
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*/ |
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public static void close(InputStream in) |
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{ |
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if (in == null) return; |
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try |
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{ |
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in.close(); |
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} |
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catch (IOException ex) |
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{} |
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198 |
} |
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|
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/** |
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Check if the specfied address is the local host or not. |
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@param address The address to check |
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@return TRUE if the address represents the local host, FALSE otherwise |
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12 Sep 06 |
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*/ |
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12 Sep 06 |
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public static boolean isLocalHost(InetAddress address) |
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206 |
{ |
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12 Oct 11 |
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return address.equals(LOCAL_HOST) || address.isLoopbackAddress(); |
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} |
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209 |
|
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210 |
/** |
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14 Sep 06 |
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Get the local address of the local host. |
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212 |
*/ |
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213 |
public static InetAddress getLocalHost() |
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12 Sep 06 |
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214 |
{ |
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215 |
return LOCAL_HOST; |
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216 |
} |
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12 Sep 06 |
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217 |
|
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14 Sep 06 |
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218 |
/** |
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14 Sep 06 |
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Get the external address of the local host. |
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14 Sep 06 |
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220 |
*/ |
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14 Sep 06 |
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221 |
public static InetAddress getPublicLocalHost() |
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14 Sep 06 |
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222 |
{ |
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14 Sep 06 |
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223 |
String hostName = LOCAL_HOST.getCanonicalHostName(); |
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14 Sep 06 |
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224 |
InetAddress adress = LOCAL_HOST; |
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14 Sep 06 |
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225 |
try |
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226 |
{ |
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14 Sep 06 |
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227 |
adress = InetAddress.getByName(hostName); |
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14 Sep 06 |
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228 |
} |
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14 Sep 06 |
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229 |
catch (UnknownHostException ex) |
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14 Sep 06 |
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230 |
{ |
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14 Sep 06 |
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231 |
ex.printStackTrace(); |
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14 Sep 06 |
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232 |
} |
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14 Sep 06 |
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233 |
return adress; |
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14 Sep 06 |
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234 |
} |
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14 Sep 06 |
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235 |
|
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14 Sep 06 |
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|
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237 |
} |