Source for javax.net.ServerSocketFactory

   1: /* ServerSocketFactory.java -- factory for server sockets.
   2:    Copyright (C) 2004 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.net;
  40: 
  41: import java.io.IOException;
  42: 
  43: import java.net.InetAddress;
  44: import java.net.ServerSocket;
  45: 
  46: import java.security.Security;
  47: 
  48: /**
  49:  * A factory for server sockets. The purpose of this class is to serve
  50:  * as the superclass of server socket factories that produce server
  51:  * sockets of a particular type, such as <i>Secure Socket Layer</i>
  52:  * (<b>SSL</b>) server sockets.
  53:  *
  54:  * @author Casey Marshall (rsdio@metastatic.org)
  55:  */
  56: public abstract class ServerSocketFactory
  57: {
  58: 
  59:   // Constructors.
  60:   // ------------------------------------------------------------------------
  61: 
  62:   /**
  63:    * Default 0-argument constructor.
  64:    */
  65:   protected ServerSocketFactory()
  66:   {
  67:     super();
  68:   }
  69: 
  70:   // Class methods.
  71:   // ------------------------------------------------------------------------
  72: 
  73:   /**
  74:    * Returns the default server socket factory. The type of factory
  75:    * returned may depend upon the installation.
  76:    *
  77:    * @return The default server socket factory.
  78:    */
  79:   public static synchronized ServerSocketFactory getDefault()
  80:   {
  81:     try
  82:       {
  83:         String s = Security.getProperty("gnu.defaultServerSocketFactory");
  84:         if (s != null)
  85:           {
  86:             Class c = Class.forName(s);
  87:             return (ServerSocketFactory) c.newInstance();
  88:           }
  89:       }
  90:     catch (Exception e)
  91:       {
  92:       }
  93:     return new VanillaServerSocketFactory();
  94:   }
  95: 
  96:   // Instance methods.
  97:   // ------------------------------------------------------------------------
  98: 
  99:   /**
 100:    * Create an unbound server socket.
 101:    *
 102:    * @return The new server socket.
 103:    * @throws IOException If a networking error occurs.
 104:    */
 105:   public ServerSocket createServerSocket() throws IOException
 106:   {
 107:     throw new UnsupportedOperationException();
 108:   }
 109: 
 110:   /**
 111:    * Create a server socket bound to the given port.
 112:    *
 113:    * @param port The port to bind the server socket to.
 114:    * @return A server socket bound to <i>port</i>.
 115:    * @throws IOException If a networking error occurs.
 116:    */
 117:   public abstract ServerSocket createServerSocket(int port) throws IOException;
 118: 
 119:   public abstract ServerSocket createServerSocket(int port, int backlog) throws IOException;
 120: 
 121:   public abstract ServerSocket createServerSocket(int port, int backlog, InetAddress bindAddress) throws IOException;
 122: }