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/*******************************************************************************
* Copyright (c) 2009, 2014 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.agent.rt.internal.output;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.SocketException;
import java.nio.channels.ServerSocketChannel;
/**
* Emulation of a {@link ServerSocket} for testing purposes without any physical
* tcp/ip connections.
*/
public class MockServerSocket extends ServerSocket {
private final Object lock = new Object();
private boolean closed;
private Socket connection;
private boolean inAccept;
public MockServerSocket() throws IOException {
super();
closed = false;
inAccept = false;
}
/**
* Establishes a new mock connection. This method blocks until the other end
* of the connection has been accepted.
*
* @return remote end of the mock connection
*/
public Socket connect() throws Exception {
synchronized (lock) {
final MockSocketConnection c = new MockSocketConnection();
connection = c.getSocketA();
lock.notifyAll();
while (connection != null) {
lock.wait();
}
return c.getSocketB();
}
}
/**
* Blocks until another thread calls the {@link #accept()} method.
*/
public void waitForAccept() throws Exception {
synchronized (lock) {
while (!inAccept) {
lock.wait();
}
}
}
@Override
public void close() throws IOException {
synchronized (lock) {
closed = true;
lock.notifyAll();
}
}
@Override
public boolean isClosed() {
return closed;
}
@Override
public Socket accept() throws IOException {
synchronized (lock) {
inAccept = true;
lock.notifyAll();
try {
while (connection == null) {
if (closed) {
throw new SocketException("socket closed");
}
lock.wait();
}
return connection;
} catch (InterruptedException e) {
throw new InterruptedIOException();
} finally {
connection = null;
inAccept = false;
lock.notifyAll();
}
}
}
// unsupported server socket methods:
@Override
public void bind(SocketAddress endpoint, int backlog) throws IOException {
throw new AssertionError();
}
@Override
public void bind(SocketAddress endpoint) throws IOException {
throw new AssertionError();
}
@Override
public ServerSocketChannel getChannel() {
throw new AssertionError();
}
@Override
public InetAddress getInetAddress() {
throw new AssertionError();
}
@Override
public int getLocalPort() {
throw new AssertionError();
}
@Override
public SocketAddress getLocalSocketAddress() {
throw new AssertionError();
}
@Override
public synchronized int getReceiveBufferSize() throws SocketException {
throw new AssertionError();
}
@Override
public boolean getReuseAddress() throws SocketException {
throw new AssertionError();
}
@Override
public synchronized int getSoTimeout() throws IOException {
throw new AssertionError();
}
@Override
public boolean isBound() {
throw new AssertionError();
}
@Override
public void setPerformancePreferences(int connectionTime, int latency,
int bandwidth) {
throw new AssertionError();
}
@Override
public synchronized void setReceiveBufferSize(int size)
throws SocketException {
throw new AssertionError();
}
@Override
public void setReuseAddress(boolean on) throws SocketException {
throw new AssertionError();
}
@Override
public synchronized void setSoTimeout(int timeout) throws SocketException {
throw new AssertionError();
}
@Override
public String toString() {
throw new AssertionError();
}
}
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