/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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.
*
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*/
/* @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.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.nio.channels.AlreadyConnectedException;
import java.nio.channels.Selector;
import java.nio.channels.SelectionKey;
import com.sun.nio.sctp.SctpChannel;
import com.sun.nio.sctp.SctpServerChannel;
import static java.lang.System.out;
import static java.lang.System.err;
public class NonBlockingAccept {
static CountDownLatch acceptLatch = new CountDownLatch(1);
static final int SEL_TIMEOUT = 10000;
static final int NUM_TEST_CONNECTIONS = 10;
void test(String[] args) {
SocketAddress address = null;
NonblockingServer server;
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 NonblockingServer();
server.start();
address = server.address();
debug("Server started and listening on " + address);
} catch (IOException ioe) {
ioe.printStackTrace();
return;
}
}
doClient(address);
}
void doClient(SocketAddress peerAddress) {
Set<SctpChannel> channels = new HashSet<SctpChannel>(NUM_TEST_CONNECTIONS);
try {
for (int i=0; i<NUM_TEST_CONNECTIONS;) {
debug("connecting " + ++i);
channels.add(SctpChannel.open(peerAddress, 0, 0));
sleep(100);
}
/* don't close the channels until they have been accepted */
acceptLatch.await();
for(SctpChannel sc: channels)
sc.close();
} catch (IOException ioe) {
unexpected(ioe);
} catch (InterruptedException ie) {
unexpected(ie);
}
}
class NonblockingServer implements Runnable
{
final InetSocketAddress serverAddr;
private SctpServerChannel ssc;
private Thread serverThread;
public NonblockingServer() 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, "NonblockingServer-" +
serverAddr.getPort());
serverThread.start();
}
InetSocketAddress address () {
return serverAddr;
}
@Override
public void run() {
Selector acceptSelector = null;
SelectionKey acceptKey = null;
try {
acceptSelector = Selector.open();
ssc.configureBlocking(false);
check(ssc.isBlocking() == false, "Should be in non-blocking mode");
acceptKey = ssc.register(acceptSelector, SelectionKey.OP_ACCEPT);
int connectionsAccepted = 0;
while (connectionsAccepted < NUM_TEST_CONNECTIONS) {
int keysAdded = acceptSelector.select(SEL_TIMEOUT);
if (keysAdded > 0) {
Set<SelectionKey> keys = acceptSelector.selectedKeys();
Iterator<SelectionKey> i = keys.iterator();
while(i.hasNext()) {
SelectionKey sk = i.next();
i.remove();
SctpServerChannel nextReady =
(SctpServerChannel)sk.channel();
check(nextReady.equals(ssc),
"channels should be equal");
check(sk.isAcceptable(),
"key should be acceptable");
check(!sk.isReadable(),
"key should not be readable");
check(!sk.isWritable(),
"key should not be writable");
check(!sk.isConnectable(),
"key should not be connectable");
SctpChannel acceptsc = nextReady.accept();
connectionsAccepted++;
debug("Accepted " + connectionsAccepted + " connections");
check(acceptsc != null,
"Accepted channel should not be null");
if (acceptsc != null) {
checkAcceptedChannel(acceptsc);
acceptsc.close();
}
} /* while */
} /* if */
} /* while */
} catch (IOException ioe) {
ioe.printStackTrace();
} finally {
acceptLatch.countDown();
if (acceptKey != null) acceptKey.cancel();
try { if (acceptSelector != null) acceptSelector.close(); }
catch (IOException ioe) { unexpected(ioe); }
try { if (ssc != null) ssc.close(); }
catch (IOException ioe) { unexpected(ioe); }
}
}
}
void checkAcceptedChannel(SctpChannel sc) {
try {
debug("Checking accepted SctpChannel");
check(sc.association() != null,
"accepted channel should have an association");
check(!(sc.getRemoteAddresses().isEmpty()),
"accepted channel should be connected");
check(!(sc.isConnectionPending()),
"accepted channel should not have a connection pending");
check(sc.isBlocking(),
"accepted channel should be blocking");
try { sc.connect(new TestSocketAddress()); fail(); }
catch (AlreadyConnectedException unused) { pass(); }
try { sc.bind(new TestSocketAddress()); fail(); }
catch (AlreadyConnectedException unused) { pass(); }
} catch (IOException unused) { fail(); }
}
static class TestSocketAddress extends SocketAddress {}
//--------------------- 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(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");}
}