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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed 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 tests.net;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
/**
* A test ServerSocket that you can't connect to --- connects will time out.
*/
public final class StuckServer {
private ServerSocket serverSocket;
private ArrayList<Socket> clients = new ArrayList<Socket>();
public StuckServer() throws IOException {
// Set a backlog and use it up so that we can expect the
// connection to time out. According to Steven's
// 4.5 "listen function", Linux adds 3 to the specified
// backlog, so we need to connect 4 times before it will hang.
serverSocket = new ServerSocket(0, 1);
for (int i = 0; i < 4; i++) {
clients.add(new Socket(serverSocket.getInetAddress(), serverSocket.getLocalPort()));
}
}
public void unblockAfterMs(final int ms) {
Thread t = new Thread(new Runnable() {
@Override public void run() {
try {
Thread.sleep(ms);
for (Socket client : clients) {
client.close();
}
clients.clear();
clients.add(serverSocket.accept());
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
t.start();
}
public InetSocketAddress getLocalSocketAddress() {
return (InetSocketAddress) serverSocket.getLocalSocketAddress();
}
public int getLocalPort() {
return serverSocket.getLocalPort();
}
public void close() throws IOException {
serverSocket.close();
for (Socket client : clients) {
client.close();
}
}
}
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