/*
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* 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
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* questions.
*/
/* @test
* @bug 4927640
* @summary Tests the SCTP protocol implementation
* @author chegar
*/
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.io.IOException;
import java.util.Set;
import java.util.Iterator;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.nio.ByteBuffer;
import com.sun.nio.sctp.AbstractNotificationHandler;
import com.sun.nio.sctp.Association;
import com.sun.nio.sctp.AssociationChangeNotification;
import com.sun.nio.sctp.AssociationChangeNotification.AssocChangeEvent;
import com.sun.nio.sctp.HandlerResult;
import com.sun.nio.sctp.InvalidStreamException;
import com.sun.nio.sctp.MessageInfo;
import com.sun.nio.sctp.SctpChannel;
import com.sun.nio.sctp.SctpMultiChannel;
import com.sun.nio.sctp.ShutdownNotification;
import static java.lang.System.out;
import static java.lang.System.err;
public class Branch {
/* Latches used to synchronize between the client and server so that
* connections without any IO may not be closed without being accepted */
final CountDownLatch clientFinishedLatch = new CountDownLatch(1);
final CountDownLatch serverFinishedLatch = new CountDownLatch(1);
void test(String[] args) {
SocketAddress address = null;
Server server = null;
if (!Util.isSCTPSupported()) {
out.println("SCTP protocol is not supported");
out.println("Test cannot be run");
return;
}
if (args.length == 2) {
/* requested to connecct to a specific address */
try {
int port = Integer.valueOf(args[1]);
address = new InetSocketAddress(args[0], port);
} catch (NumberFormatException nfe) {
err.println(nfe);
}
} else {
/* start server on local machine, default */
try {
server = new Server();
server.start();
address = server.address();
debug("Server started and listening on " + address);
} catch (IOException ioe) {
ioe.printStackTrace();
return;
}
}
doTest(address);
}
void doTest(SocketAddress peerAddress) {
SctpMultiChannel channel = null;
ByteBuffer buffer = ByteBuffer.allocate(Util.LARGE_BUFFER);
MessageInfo info = MessageInfo.createOutgoing(null, 0);
try {
channel = SctpMultiChannel.open();
/* setup an association implicitly by sending a small message */
int streamNumber = 0;
debug("sending to " + peerAddress + " on stream number: " + streamNumber);
info = MessageInfo.createOutgoing(peerAddress, streamNumber);
buffer.put(Util.SMALL_MESSAGE.getBytes("ISO-8859-1"));
buffer.flip();
int position = buffer.position();
int remaining = buffer.remaining();
debug("sending small message: " + buffer);
int sent = channel.send(buffer, info);
check(sent == remaining, "sent should be equal to remaining");
check(buffer.position() == (position + sent),
"buffers position should have been incremented by sent");
/* Receive the COMM_UP */
buffer.clear();
BranchNotificationHandler handler = new BranchNotificationHandler();
info = channel.receive(buffer, null, handler);
check(handler.receivedCommUp(), "COMM_UP no received");
Set<Association> associations = channel.associations();
check(!associations.isEmpty(),"There should be some associations");
Association bassoc = associations.iterator().next();
/* TEST 1: branch */
SctpChannel bchannel = channel.branch(bassoc);
check(!bchannel.getAllLocalAddresses().isEmpty(),
"branched channel should be bound");
check(!bchannel.getRemoteAddresses().isEmpty(),
"branched channel should be connected");
check(channel.associations().isEmpty(),
"there should be no associations since the only one was branched off");
buffer.clear();
info = bchannel.receive(buffer, null, null);
buffer.flip();
check(info != null, "info is null");
check(info.streamNumber() == streamNumber,
"message not sent on the correct stream");
check(info.bytes() == Util.SMALL_MESSAGE.getBytes("ISO-8859-1").
length, "bytes received not equal to message length");
check(info.bytes() == buffer.remaining(), "bytes != remaining");
check(Util.compare(buffer, Util.SMALL_MESSAGE),
"received message not the same as sent message");
} catch (IOException ioe) {
unexpected(ioe);
} finally {
clientFinishedLatch.countDown();
try { serverFinishedLatch.await(10L, TimeUnit.SECONDS); }
catch (InterruptedException ie) { unexpected(ie); }
if (channel != null) {
try { channel.close(); }
catch (IOException e) { unexpected (e);}
}
}
}
class Server implements Runnable
{
final InetSocketAddress serverAddr;
private SctpMultiChannel serverChannel;
public Server() throws IOException {
serverChannel = SctpMultiChannel.open().bind(null);
java.util.Set<SocketAddress> addrs = serverChannel.getAllLocalAddresses();
if (addrs.isEmpty())
debug("addrs should not be empty");
serverAddr = (InetSocketAddress) addrs.iterator().next();
}
public void start() {
(new Thread(this, "Server-" + serverAddr.getPort())).start();
}
public InetSocketAddress address() {
return serverAddr;
}
@Override
public void run() {
ByteBuffer buffer = ByteBuffer.allocateDirect(Util.LARGE_BUFFER);
try {
MessageInfo info;
/* receive a small message */
do {
info = serverChannel.receive(buffer, null, null);
if (info == null) {
fail("Server: unexpected null from receive");
return;
}
} while (!info.isComplete());
buffer.flip();
check(info != null, "info is null");
check(info.streamNumber() == 0,
"message not sent on the correct stream");
check(info.bytes() == Util.SMALL_MESSAGE.getBytes("ISO-8859-1").
length, "bytes received not equal to message length");
check(info.bytes() == buffer.remaining(), "bytes != remaining");
check(Util.compare(buffer, Util.SMALL_MESSAGE),
"received message not the same as sent message");
check(info != null, "info is null");
Set<Association> assocs = serverChannel.associations();
check(assocs.size() == 1, "there should be only one association");
/* echo the message */
debug("Server: echoing first message");
buffer.flip();
int bytes = serverChannel.send(buffer, info);
debug("Server: sent " + bytes + "bytes");
clientFinishedLatch.await(10L, TimeUnit.SECONDS);
serverFinishedLatch.countDown();
} catch (IOException ioe) {
unexpected(ioe);
} catch (InterruptedException ie) {
unexpected(ie);
} finally {
try { if (serverChannel != null) serverChannel.close(); }
catch (IOException unused) {}
}
}
}
class BranchNotificationHandler extends AbstractNotificationHandler<Object>
{
boolean receivedCommUp; // false
boolean receivedCommUp() {
return receivedCommUp;
}
@Override
public HandlerResult handleNotification(
AssociationChangeNotification notification, Object attachment) {
AssocChangeEvent event = notification.event();
debug("AssociationChangeNotification");
debug(" Association: " + notification.association());
debug(" Event: " + event);
if (event.equals(AssocChangeEvent.COMM_UP))
receivedCommUp = true;
return HandlerResult.RETURN;
}
/* A ShutdownNotification handler is provided to ensure that no
* shutdown notification are being handled since we don't expect
* to receive them. This is not part of branch testing, it just
* fits here to test another bug. */
@Override
public HandlerResult handleNotification(
ShutdownNotification notification, Object attachment) {
debug("ShutdownNotification");
debug(" Association: " + notification.association());
fail("Shutdown should not be received");
return HandlerResult.RETURN;
}
}
//--------------------- Infrastructure ---------------------------
boolean debug = true;
volatile int passed = 0, failed = 0;
void pass() {passed++;}
void fail() {failed++; Thread.dumpStack();}
void fail(String msg) {System.err.println(msg); fail();}
void unexpected(Throwable t) {failed++; t.printStackTrace();}
void check(boolean cond) {if (cond) pass(); else fail();}
void check(boolean cond, String failMessage) {if (cond) pass(); else fail(failMessage);}
void debug(String message) {if(debug) { System.out.println(message); } }
public static void main(String[] args) throws Throwable {
Class<?> k = new Object(){}.getClass().getEnclosingClass();
try {k.getMethod("instanceMain",String[].class)
.invoke( k.newInstance(), (Object) args);}
catch (Throwable e) {throw e.getCause();}}
public void instanceMain(String[] args) throws Throwable {
try {test(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new AssertionError("Some tests failed");}
}