/*
* Copyright (c) 2006, 2010, 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.
*/
/**
* @test
* @bug 6361557
* @run main/othervm B6361557
* @summary Lightweight HTTP server quickly runs out of file descriptors on Linux
*/
import com.sun.net.httpserver.*;
import java.util.*;
import java.util.concurrent.*;
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.net.*;
/**
* The test simply opens 1,000 separate connections
* and invokes one http request on each. The client does
* not close any sockets until after they are closed
* by the server. This verifies the basic ability
* of the server to manage a reasonable number of connections
*/
public class B6361557 {
public static boolean error = false;
static final int NUM = 1000;
static class Handler implements HttpHandler {
int invocation = 1;
public void handle (HttpExchange t)
throws IOException
{
InputStream is = t.getRequestBody();
Headers map = t.getRequestHeaders();
Headers rmap = t.getResponseHeaders();
while (is.read () != -1) ;
is.close();
t.sendResponseHeaders (200, -1);
t.close();
}
}
final static String request = "GET /test/foo.html HTTP/1.1\r\nContent-length: 0\r\n\r\n";
final static ByteBuffer requestBuf = ByteBuffer.allocate(64).put(request.getBytes());
public static void main (String[] args) throws Exception {
Handler handler = new Handler();
InetSocketAddress addr = new InetSocketAddress (0);
HttpServer server = HttpServer.create (addr, 0);
HttpContext ctx = server.createContext ("/test", handler);
ExecutorService executor = Executors.newCachedThreadPool();
server.setExecutor (executor);
server.start ();
InetSocketAddress destaddr = new InetSocketAddress (
"127.0.0.1", server.getAddress().getPort()
);
System.out.println ("destaddr " + destaddr);
Selector selector = Selector.open ();
int requests = 0;
int responses = 0;
while (true) {
int selres = selector.select (1);
Set<SelectionKey> selkeys = selector.selectedKeys();
for (SelectionKey key : selkeys) {
if (key.isReadable()) {
SocketChannel chan = (SocketChannel)key.channel();
ByteBuffer buf = (ByteBuffer)key.attachment();
try {
int x = chan.read(buf);
if (x == -1 || responseComplete(buf)) {
key.attach(null);
chan.close();
responses++;
}
} catch (IOException e) {}
}
}
if (requests < NUM) {
SocketChannel schan = SocketChannel.open(destaddr);
requestBuf.rewind();
int c = 0;
while (requestBuf.remaining() > 0) {
c += schan.write(requestBuf);
}
schan.configureBlocking(false);
schan.register(selector, SelectionKey.OP_READ, ByteBuffer.allocate(100));
requests++;
}
if (responses == NUM) {
System.out.println ("Finished clients");
break;
}
}
server.stop (1);
selector.close();
executor.shutdown ();
}
/* Look for CR LF CR LF */
static boolean responseComplete(ByteBuffer buf) {
int pos = buf.position();
buf.flip();
byte[] lookingFor = new byte[] {'\r', '\n', '\r', '\n' };
int lookingForCount = 0;
while (buf.hasRemaining()) {
byte b = buf.get();
if (b == lookingFor[lookingForCount]) {
lookingForCount++;
if (lookingForCount == 4) {
return true;
}
} else {
lookingForCount = 0;
}
}
buf.position(pos);
buf.limit(buf.capacity());
return false;
}
}