1 /*
2  * Copyright (C) 2014 Square, Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.squareup.okhttp;
17 
18 import java.io.IOException;
19 import java.net.InetAddress;
20 import java.net.ServerSocket;
21 import javax.net.ServerSocketFactory;
22 
23 /**
24  * A {@link ServerSocketFactory} that delegates calls. Sockets can be configured after creation by
25  * overriding {@link #configureServerSocket(java.net.ServerSocket)}.
26  */
27 public class DelegatingServerSocketFactory extends ServerSocketFactory {
28 
29   private final ServerSocketFactory delegate;
30 
DelegatingServerSocketFactory(ServerSocketFactory delegate)31   public DelegatingServerSocketFactory(ServerSocketFactory delegate) {
32     this.delegate = delegate;
33   }
34 
35   @Override
createServerSocket()36   public ServerSocket createServerSocket() throws IOException {
37     ServerSocket serverSocket = delegate.createServerSocket();
38     return configureServerSocket(serverSocket);
39   }
40 
41   @Override
createServerSocket(int port)42   public ServerSocket createServerSocket(int port) throws IOException {
43     ServerSocket serverSocket = delegate.createServerSocket(port);
44     return configureServerSocket(serverSocket);
45   }
46 
47   @Override
createServerSocket(int port, int backlog)48   public ServerSocket createServerSocket(int port, int backlog) throws IOException {
49     ServerSocket serverSocket = delegate.createServerSocket(port, backlog);
50     return configureServerSocket(serverSocket);
51   }
52 
53   @Override
createServerSocket(int port, int backlog, InetAddress ifAddress)54   public ServerSocket createServerSocket(int port, int backlog, InetAddress ifAddress)
55       throws IOException {
56     ServerSocket serverSocket = delegate.createServerSocket(port, backlog, ifAddress);
57     return configureServerSocket(serverSocket);
58   }
59 
configureServerSocket(ServerSocket serverSocket)60   protected ServerSocket configureServerSocket(ServerSocket serverSocket) throws IOException {
61     // No-op by default.
62     return serverSocket;
63   }
64 }
65