| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package javax.net; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.ServerSocket; |
| import java.net.SocketException; |
| |
| /** |
| * This abstract class defines methods to create server sockets. It can be |
| * subclassed to create specific server socket types. |
| */ |
| public abstract class ServerSocketFactory { |
| private static ServerSocketFactory defaultFactory; |
| |
| /** |
| * Gets the default server socket factory of the system which can be used to |
| * create new server sockets without creating a subclass of this factory. |
| * |
| * @return the system default server socket factory. |
| */ |
| public static synchronized ServerSocketFactory getDefault() { |
| if (defaultFactory == null) { |
| defaultFactory = new DefaultServerSocketFactory(); |
| } |
| return defaultFactory; |
| } |
| |
| /** |
| * Creates a new {@code ServerSocketFactory} instance. |
| */ |
| protected ServerSocketFactory() { |
| } |
| |
| /** |
| * Creates a new server socket which is not bound to any local address. This |
| * method has to be overridden by a subclass otherwise a {@code |
| * SocketException} is thrown. |
| * |
| * @return the created unbound server socket. |
| * @throws IOException |
| * if an error occurs while creating a new server socket. |
| */ |
| public ServerSocket createServerSocket() throws IOException { |
| // follow RI's behavior |
| throw new SocketException("Unbound server sockets not implemented"); |
| } |
| |
| /** |
| * Creates a new server socket which is bound to the given port with a |
| * maximum backlog of 50 unaccepted connections. |
| * |
| * @param port the port on which the created socket has to listen. |
| * @return the created bound server socket. |
| * @throws IOException |
| * if an error occurs while creating a new server socket. |
| */ |
| public abstract ServerSocket createServerSocket(int port) throws IOException; |
| |
| /** |
| * Creates a new server socket which is bound to the given port and |
| * configures its maximum of queued connections. |
| * |
| * @param port the port on which the created socket has to listen. |
| * @param backlog the maximum number of unaccepted connections. Passing 0 or |
| * a negative value yields the default backlog of 50. |
| * @return the created bound server socket. |
| * @throws IOException if an error occurs while creating a new server socket. |
| */ |
| public abstract ServerSocket createServerSocket(int port, int backlog) throws IOException; |
| |
| /** |
| * Creates a new server socket which is bound to the given address on the |
| * specified port and configures its maximum of queued connections. |
| * |
| * @param port the port on which the created socket has to listen. |
| * @param backlog the maximum number of unaccepted connections. Passing 0 or |
| * a negative value yields the default backlog of 50. |
| * @param iAddress the address of the network interface which is used by the |
| * created socket. |
| * @return the created bound server socket. |
| * @throws IOException if an error occurs while creating a new server socket. |
| */ |
| public abstract ServerSocket createServerSocket(int port, int backlog, InetAddress iAddress) |
| throws IOException; |
| |
| } |