| /* SocketFactory.java -- factory for client sockets. |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.net; |
| |
| import java.io.IOException; |
| |
| import java.net.InetAddress; |
| import java.net.Socket; |
| import java.net.UnknownHostException; |
| |
| import java.security.Security; |
| |
| /** |
| * A factory for client sockets. The purpose of this class is to serve |
| * as the superclass of server socket factories that produce client |
| * sockets of a particular type, such as <i>Secure Socket Layer</i> |
| * (<b>SSL</b>) sockets. |
| * |
| * @author Casey Marshall (rsdio@metastatic.org) |
| */ |
| public abstract class SocketFactory |
| { |
| |
| // Constructor. |
| // ------------------------------------------------------------------- |
| |
| /** |
| * Default 0-arguments constructor. |
| */ |
| protected SocketFactory() |
| { |
| super(); |
| } |
| |
| // Class methods. |
| // ------------------------------------------------------------------- |
| |
| /** |
| * Returns the default socket factory. The type of factory |
| * returned may depend upon the installation. |
| * |
| * @return The default socket factory. |
| */ |
| public static synchronized SocketFactory getDefault() |
| { |
| try |
| { |
| String s = Security.getProperty("gnu.defaultSocketFactory"); |
| if (s != null) |
| { |
| Class c = Class.forName(s); |
| return (SocketFactory) c.newInstance(); |
| } |
| } |
| catch (Exception e) |
| { |
| } |
| return new VanillaSocketFactory(); |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------- |
| |
| /** |
| * Returns an unbound client socket. |
| * |
| * @return The new, unbound socket. |
| */ |
| public Socket createSocket() throws IOException |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Creates a socket connected to a given host on a given port. |
| * |
| * @param host The hostname to connect to. |
| * @param port The port on <i>host</i> to connect to. |
| * @return A socket connected to <i>host</i> on <i>port</i>. |
| * @throws IOException If a network error occurs. |
| * @throws UnknownHostException If <i>host</i> cannot be resolved. |
| */ |
| public abstract Socket createSocket(String host, int port) throws IOException, UnknownHostException; |
| |
| /** |
| * Creates a socket connected to a given host on a given port, |
| * connecting locally to the interface with the given address and port. |
| * |
| * @param host The hostname to connect to. |
| * @param port The port on <i>host</i> to connect to. |
| * @param localHost The address of the local interface to bind to. |
| * @param localPort The local port to bind to. |
| * @return A socket connected to <i>host</i> on <i>port</i>. |
| * @throws IOException If a network error occurs. |
| * @throws UnknownHostException If <i>host</i> cannot be resolved. |
| */ |
| public abstract Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException; |
| |
| /** |
| * Creates a socket connected to a given host on a given port. |
| * |
| * @param host The host address to connect to. |
| * @param port The port on <i>host</i> to connect to. |
| * @return A socket connected to <i>host</i> on <i>port</i>. |
| * @throws IOException If a network error occurs. |
| */ |
| public abstract Socket createSocket(InetAddress host, int port) throws IOException; |
| |
| /** |
| * Creates a socket connected to a given host on a given port, |
| * connecting locally to the interface with the given address and port. |
| * |
| * @param host The host address to connect to. |
| * @param port The port on <i>host</i> to connect to. |
| * @param localHost The address of the local interface to bind to. |
| * @param localPort The local port to bind to. |
| * @return A socket connected to <i>host</i> on <i>port</i>. |
| * @throws IOException If a network error occurs. |
| */ |
| public abstract Socket createSocket(InetAddress hast, int port, InetAddress localHost, int localPort) throws IOException; |
| } |