97 lines
3.2 KiB
Java
97 lines
3.2 KiB
Java
/*
|
|
* Copyright (c) 2016, 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.io.IOException;
|
|
import java.net.InetAddress;
|
|
import java.net.ServerSocket;
|
|
import java.net.Socket;
|
|
import java.util.Objects;
|
|
import java.util.function.Consumer;
|
|
|
|
import javax.net.ServerSocketFactory;
|
|
|
|
/*
|
|
* A simple socks proxy for traveling socket.
|
|
*/
|
|
class SocksProxy implements Runnable, AutoCloseable {
|
|
|
|
private ServerSocket server;
|
|
private Consumer<Socket> socketConsumer;
|
|
|
|
private SocksProxy(ServerSocket server, Consumer<Socket> socketConsumer) {
|
|
this.server = server;
|
|
this.socketConsumer = socketConsumer;
|
|
}
|
|
|
|
static SocksProxy startProxy(Consumer<Socket> socketConsumer)
|
|
throws IOException {
|
|
Objects.requireNonNull(socketConsumer, "socketConsumer cannot be null");
|
|
|
|
ServerSocket server
|
|
= ServerSocketFactory.getDefault().createServerSocket(0);
|
|
|
|
System.setProperty("socksProxyHost",
|
|
InetAddress.getLoopbackAddress().getHostAddress());
|
|
System.setProperty("socksProxyPort",
|
|
String.valueOf(server.getLocalPort()));
|
|
System.setProperty("socksProxyVersion", "5");
|
|
|
|
SocksProxy proxy = new SocksProxy(server, socketConsumer);
|
|
Thread proxyThread = new Thread(proxy, "Proxy");
|
|
proxyThread.setDaemon(true);
|
|
proxyThread.start();
|
|
|
|
return proxy;
|
|
}
|
|
|
|
@Override
|
|
public void run() {
|
|
while (!server.isClosed()) {
|
|
try(Socket socket = server.accept()) {
|
|
System.out.println("Server: accepted connection");
|
|
if (socketConsumer != null) {
|
|
socketConsumer.accept(socket);
|
|
}
|
|
} catch (IOException e) {
|
|
if (!server.isClosed()) {
|
|
throw new RuntimeException(
|
|
"Server: accept connection failed", e);
|
|
} else {
|
|
System.out.println("Server is closed.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void close() throws Exception {
|
|
if (!server.isClosed()) {
|
|
server.close();
|
|
}
|
|
}
|
|
|
|
int getPort() {
|
|
return server.getLocalPort();
|
|
}
|
|
}
|