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/*
* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.net.*;
import java.io.*;
import java.nio.channels.*;
import java.util.Enumeration;
/**
* Sanity check Socket/ServerSocket and each of the stream-oriented channels
* on each IP address plumbed to the network adapters.
*/
public class Sanity {
public static void main(String[] args) throws Exception {
Enumeration<NetworkInterface> nifs = NetworkInterface.getNetworkInterfaces();
while (nifs.hasMoreElements()) {
NetworkInterface ni = nifs.nextElement();
Enumeration<InetAddress> addrs = ni.getInetAddresses();
while (addrs.hasMoreElements()) {
InetAddress addr = addrs.nextElement();
test(addr);
}
}
}
static void test(InetAddress addr) throws Exception {
System.out.println(addr.getHostAddress());
// ServerSocketChannel.bind
ServerSocketChannel ssc = ServerSocketChannel.open();
try {
ssc.bind(new InetSocketAddress(addr, 0));
int port = ((InetSocketAddress)(ssc.getLocalAddress())).getPort();
// SocketChannel.connect (implicit bind)
SocketChannel client = SocketChannel.open();
try {
client.connect(new InetSocketAddress(addr, port));
SocketChannel peer = ssc.accept();
try {
testConnection(Channels.newOutputStream(client),
Channels.newInputStream(peer));
} finally {
peer.close();
}
} finally {
client.close();
}
// SocketChannel.connect (explicit bind)
client = SocketChannel.open();
try {
client.bind(new InetSocketAddress(addr, 0))
.connect(new InetSocketAddress(addr, port));
ssc.accept().close();
} finally {
client.close();
}
} finally {
ssc.close();
}
// AsynchronousServerSocketChannel.bind
AsynchronousServerSocketChannel server =
AsynchronousServerSocketChannel.open();
try {
server.bind(new InetSocketAddress(addr, 0));
int port = ((InetSocketAddress)(server.getLocalAddress())).getPort();
// AsynchronousSocketChannel.connect (implicit bind)
AsynchronousSocketChannel client = AsynchronousSocketChannel.open();
try {
client.connect(new InetSocketAddress(addr, port)).get();
AsynchronousSocketChannel peer = server.accept().get();
try {
testConnection(Channels.newOutputStream(client),
Channels.newInputStream(peer));
} finally {
peer.close();
}
} finally {
client.close();
}
// AsynchronousSocketChannel.connect (explicit bind)
client = AsynchronousSocketChannel.open();
try {
client.bind(new InetSocketAddress(addr, 0))
.connect(new InetSocketAddress(addr, port)).get();
server.accept().get().close();
} finally {
client.close();
}
} finally {
server.close();
}
// ServerSocket.bind
ServerSocket ss = new ServerSocket();
try {
ss.bind(new InetSocketAddress(addr, 0));
int port = ss.getLocalPort();
// Socket.connect (implicit bind)
Socket s = new Socket();
try {
s.connect(new InetSocketAddress(addr, port));
Socket peer = ss.accept();
try {
testConnection(s.getOutputStream(), peer.getInputStream());
} finally {
peer.close();
}
} finally {
s.close();
}
// Socket.connect (explicit bind)
s = new Socket();
try {
s.bind(new InetSocketAddress(addr, 0));
s.connect(new InetSocketAddress(addr, port));
ss.accept().close();
} finally {
s.close();
}
} finally {
ss.close();
}
}
static void testConnection(OutputStream out, InputStream in)
throws IOException
{
byte[] msg = "hello".getBytes();
out.write(msg);
byte[] ba = new byte[100];
int nread = 0;
while (nread < msg.length) {
int n = in.read(ba);
if (n < 0)
throw new IOException("EOF not expected!");
nread += n;
}
}
}
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