1/* 2 * Copyright (c) 1998, 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package java.rmi.server; 27 28import java.io.*; 29import java.net.*; 30 31/** 32 * An <code>RMIClientSocketFactory</code> instance is used by the RMI runtime 33 * in order to obtain client sockets for RMI calls. A remote object can be 34 * associated with an <code>RMIClientSocketFactory</code> when it is 35 * created/exported via the constructors or <code>exportObject</code> methods 36 * of <code>java.rmi.server.UnicastRemoteObject</code> and 37 * <code>java.rmi.activation.Activatable</code> . 38 * 39 * <p>An <code>RMIClientSocketFactory</code> instance associated with a remote 40 * object will be downloaded to clients when the remote object's reference is 41 * transmitted in an RMI call. This <code>RMIClientSocketFactory</code> will 42 * be used to create connections to the remote object for remote method calls. 43 * 44 * <p>An <code>RMIClientSocketFactory</code> instance can also be associated 45 * with a remote object registry so that clients can use custom socket 46 * communication with a remote object registry. 47 * 48 * <p>An implementation of this interface should be serializable and 49 * should implement {@link Object#equals} to return <code>true</code> when 50 * passed an instance that represents the same (functionally equivalent) 51 * client socket factory, and <code>false</code> otherwise (and it should also 52 * implement {@link Object#hashCode} consistently with its 53 * <code>Object.equals</code> implementation). 54 * 55 * @author Ann Wollrath 56 * @author Peter Jones 57 * @since 1.2 58 * @see java.rmi.server.UnicastRemoteObject 59 * @see java.rmi.activation.Activatable 60 * @see java.rmi.registry.LocateRegistry 61 */ 62public interface RMIClientSocketFactory { 63 64 /** 65 * Create a client socket connected to the specified host and port. 66 * @param host the host name 67 * @param port the port number 68 * @return a socket connected to the specified host and port. 69 * @exception IOException if an I/O error occurs during socket creation 70 * @since 1.2 71 */ 72 public Socket createSocket(String host, int port) 73 throws IOException; 74} 75