8233847: (sctp) Flx link-local IPv6 scope handling and test cleanup
Reviewed-by: alanb
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/* @test
* @bug 6863110
* @summary Newly connected/accepted SctpChannel should fire OP_READ if registered with a Selector
* @author chegar
*/
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.io.IOException;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.nio.ByteBuffer;
import java.nio.channels.Selector;
import java.nio.channels.SelectionKey;
import com.sun.nio.sctp.AbstractNotificationHandler;
import com.sun.nio.sctp.AssociationChangeNotification;
import com.sun.nio.sctp.AssociationChangeNotification.AssocChangeEvent;
import com.sun.nio.sctp.HandlerResult;
import com.sun.nio.sctp.Notification;
import com.sun.nio.sctp.SctpChannel;
import com.sun.nio.sctp.SctpServerChannel;
import com.sun.nio.sctp.ShutdownNotification;
import static java.lang.System.out;
import static java.lang.System.err;
import static java.nio.channels.SelectionKey.OP_CONNECT;
import static java.nio.channels.SelectionKey.OP_READ;
public class CommUp {
static CountDownLatch acceptLatch = new CountDownLatch(1);
static final int TIMEOUT = 10000;
CommUpNotificationHandler clientHandler = new CommUpNotificationHandler();
CommUpNotificationHandler serverHandler = new CommUpNotificationHandler();
CommUpServer server;
Thread clientThread;
void test(String[] args) {
SocketAddress address = 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 CommUpServer();
server.start();
address = server.address();
debug("Server started and listening on " + address);
} catch (IOException ioe) {
ioe.printStackTrace();
return;
}
}
/* store the main thread so that the server can interrupt it, if necessary */
clientThread = Thread.currentThread();
doClient(address);
}
void doClient(SocketAddress peerAddress) {
SctpChannel sc = null;
try {
debug("connecting to " + peerAddress);
sc = SctpChannel.open();
sc.configureBlocking(false);
check(sc.isBlocking() == false, "Should be in non-blocking mode");
sc.connect(peerAddress);
Selector selector = Selector.open();
SelectionKey selectiontKey = sc.register(selector, OP_CONNECT);
/* Expect two interest Ops */
boolean opConnectReceived = false;
boolean opReadReceived = false;
for (int z=0; z<2; z++) {
debug("select " + z);
int keysAdded = selector.select(TIMEOUT);
debug("returned " + keysAdded + " keys");
if (keysAdded > 0) {
Set<SelectionKey> keys = selector.selectedKeys();
Iterator<SelectionKey> i = keys.iterator();
while(i.hasNext()) {
SelectionKey sk = i.next();
i.remove();
SctpChannel readyChannel =
(SctpChannel)sk.channel();
/* OP_CONNECT */
if (sk.isConnectable()) {
/* some trivial checks */
check(opConnectReceived == false,
"should only received one OP_CONNECT");
check(opReadReceived == false,
"should not receive OP_READ before OP_CONNECT");
check(readyChannel.equals(sc),
"channels should be equal");
check(!sk.isAcceptable(),
"key should not be acceptable");
check(!sk.isReadable(),
"key should not be readable");
check(!sk.isWritable(),
"key should not be writable");
/* now process the OP_CONNECT */
opConnectReceived = true;
check((sk.interestOps() & OP_CONNECT) == OP_CONNECT,
"selection key interest ops should contain OP_CONNECT");
sk.interestOps(OP_READ);
check((sk.interestOps() & OP_CONNECT) != OP_CONNECT,
"selection key interest ops should not contain OP_CONNECT");
check(sc.finishConnect(),
"finishConnect should return true");
} /* OP_READ */
else if (sk.isReadable()) {
/* some trivial checks */
check(opConnectReceived == true,
"should receive one OP_CONNECT before OP_READ");
check(opReadReceived == false,
"should not receive OP_READ before OP_CONNECT");
check(readyChannel.equals(sc),
"channels should be equal");
check(!sk.isAcceptable(),
"key should not be acceptable");
check(sk.isReadable(),
"key should be readable");
check(!sk.isWritable(),
"key should not be writable");
check(!sk.isConnectable(),
"key should not be connectable");
/* now process the OP_READ */
opReadReceived = true;
selectiontKey.cancel();
/* try with small buffer to see if native
* implementation can handle this */
ByteBuffer buffer = ByteBuffer.allocateDirect(1);
readyChannel.receive(buffer, null, clientHandler);
check(clientHandler.receivedCommUp(),
"Client should have received COMM_UP");
/* dont close (or put anything on) the channel until
* we check that the server's accepted channel also
* received COMM_UP */
serverHandler.waitForCommUp();
} else {
fail("Unexpected selection key");
}
}
} else {
fail("Client selector returned 0 ready keys");
/* stop the server */
server.thread().interrupt();
}
} //for
try { sc.close(); }
catch (IOException ioe) { unexpected(ioe); }
} catch (IOException ioe) {
unexpected(ioe);
} catch (InterruptedException ie) {
unexpected(ie);
}
}
class CommUpServer implements Runnable
{
final InetSocketAddress serverAddr;
private SctpServerChannel ssc;
private Thread serverThread;
public CommUpServer() throws IOException {
ssc = SctpServerChannel.open().bind(null);
java.util.Set<SocketAddress> addrs = ssc.getAllLocalAddresses();
if (addrs.isEmpty())
debug("addrs should not be empty");
serverAddr = (InetSocketAddress) addrs.iterator().next();
}
void start() {
serverThread = new Thread(this, "CommUpServer-" +
serverAddr.getPort());
serverThread.start();
}
InetSocketAddress address () {
return serverAddr;
}
Thread thread() {
return serverThread;
}
@Override
public void run() {
Selector selector = null;
SctpChannel sc = null;
SelectionKey readKey = null;
try {
sc = ssc.accept();
debug("accepted " + sc);
selector = Selector.open();
sc.configureBlocking(false);
check(sc.isBlocking() == false, "Should be in non-blocking mode");
readKey = sc.register(selector, SelectionKey.OP_READ);
debug("select");
int keysAdded = selector.select(TIMEOUT);
debug("returned " + keysAdded + " keys");
if (keysAdded > 0) {
Set<SelectionKey> keys = selector.selectedKeys();
Iterator<SelectionKey> i = keys.iterator();
while(i.hasNext()) {
SelectionKey sk = i.next();
i.remove();
SctpChannel readyChannel =
(SctpChannel)sk.channel();
check(readyChannel.equals(sc),
"channels should be equal");
check(!sk.isAcceptable(),
"key should not be acceptable");
check(sk.isReadable(),
"key should be readable");
check(!sk.isWritable(),
"key should not be writable");
check(!sk.isConnectable(),
"key should not be connectable");
/* block until we check if the client has received its COMM_UP*/
clientHandler.waitForCommUp();
ByteBuffer buffer = ByteBuffer.allocateDirect(1);
sc.receive(buffer, null, serverHandler);
check(serverHandler.receivedCommUp(),
"Accepted channel should have received COMM_UP");
}
} else {
fail("Server selector returned 0 ready keys");
/* stop the client */
clientThread.interrupt();
}
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (InterruptedException unused) {
} finally {
if (readKey != null) readKey.cancel();
try { if (selector != null) selector.close(); }
catch (IOException ioe) { unexpected(ioe); }
try { if (ssc != null) ssc.close(); }
catch (IOException ioe) { unexpected(ioe); }
try { if (sc != null) sc.close(); }
catch (IOException ioe) { unexpected(ioe); }
}
}
}
class CommUpNotificationHandler extends AbstractNotificationHandler<Object>
{
private boolean receivedCommUp; // false
public synchronized boolean receivedCommUp() {
return receivedCommUp;
}
public synchronized boolean waitForCommUp() throws InterruptedException {
while (receivedCommUp == false) {
wait();
}
return false;
}
@Override
public HandlerResult handleNotification(
Notification notification, Object attachment) {
fail("Unknown notification type");
return HandlerResult.CONTINUE;
}
@Override
public synchronized 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;
notifyAll();
}
return HandlerResult.RETURN;
}
@Override
public HandlerResult handleNotification(
ShutdownNotification notification, Object attachment) {
debug("ShutdownNotification");
debug(" Association: " + notification.association());
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) {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) { out.println(Thread.currentThread().getName() + ": " + message); } }
void sleep(long millis) { try { Thread.currentThread().sleep(millis); }
catch(InterruptedException ie) { unexpected(ie); }}
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);}
out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new AssertionError("Some tests failed");}
}