/**
* Starts an SSL / TLS handshake for the specified channel.
*
* @return a {@link ChannelFuture} which is notified when the handshake succeeds or fails.
*/
public ChannelFuture handshake() {
if (handshaken && !isEnableRenegotiation()) {
throw new IllegalStateException("renegotiation disabled");
}
ChannelHandlerContext ctx = this.ctx;
Channel channel = ctx.getChannel();
ChannelFuture handshakeFuture;
synchronized (handshakeLock) {
if (handshaking) {
return this.handshakeFuture;
} else {
handshaking = true;
try {
engine.beginHandshake();
runDelegatedTasks();
handshakeFuture = this.handshakeFuture = future(channel);
} catch (SSLException e) {
handshakeFuture = this.handshakeFuture = failedFuture(channel, e);
}
}
}
try {
wrapNonAppData(ctx, channel);
} catch (SSLException e) {
handshakeFuture.setFailure(e);
}
return handshakeFuture;
}
@Override
public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
// Make sure the handshake future is notified when a connection has
// been closed during handshake.
synchronized (handshakeLock) {
if (handshaking) {
handshakeFuture.setFailure(new ClosedChannelException());
}
}
try {
super.channelDisconnected(ctx, e);
} finally {
unwrap(ctx, e.getChannel(), ChannelBuffers.EMPTY_BUFFER, 0, 0);
engine.closeOutbound();
if (!sentCloseNotify.get() && handshaken) {
try {
engine.closeInbound();
} catch (SSLException ex) {
logger.debug("Failed to clean up SSLEngine.", ex);
}
}
}
}
static void close(OioDatagramChannel channel, ChannelFuture future) {
boolean connected = channel.isConnected();
boolean bound = channel.isBound();
try {
channel.socket.close();
if (channel.setClosed()) {
future.setSuccess();
if (connected) {
// Notify the worker so it stops reading.
Thread currentThread = Thread.currentThread();
Thread workerThread = channel.workerThread;
if (workerThread != null && currentThread != workerThread) {
workerThread.interrupt();
}
fireChannelDisconnected(channel);
}
if (bound) {
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private void bind(OioDatagramChannel channel, ChannelFuture future, SocketAddress localAddress) {
boolean bound = false;
boolean workerStarted = false;
try {
channel.socket.bind(localAddress);
bound = true;
// Fire events
future.setSuccess();
fireChannelBound(channel, channel.getLocalAddress());
// Start the business.
workerExecutor.execute(
new IoWorkerRunnable(
new ThreadRenamingRunnable(
new OioDatagramWorker(channel),
"Old I/O datagram worker (channelId: "
+ channel.getId()
+ ", "
+ channel.getLocalAddress()
+ ')')));
workerStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (bound && !workerStarted) {
OioDatagramWorker.close(channel, future);
}
}
}
/**
* Will bind the DatagramSocket to the passed-in address. Every call bind will spawn a new thread
* using the that basically in turn
*/
private void bind(
final NioDatagramChannel channel,
final ChannelFuture future,
final InetSocketAddress address) {
boolean bound = false;
boolean started = false;
try {
// First bind the DatagramSocket the specified port.
channel.getDatagramChannel().socket().bind(address);
bound = true;
future.setSuccess();
fireChannelBound(channel, address);
channel.worker.register(channel, null);
started = true;
} catch (final Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (!started && bound) {
close(channel, future);
}
}
}
static void write(
OioDatagramChannel channel,
ChannelFuture future,
Object message,
SocketAddress remoteAddress) {
try {
ChannelBuffer buf = (ChannelBuffer) message;
int length = buf.readableBytes();
ByteBuffer nioBuf = buf.toByteBuffer();
DatagramPacket packet;
if (nioBuf.hasArray()) {
// Avoid copy if the buffer is backed by an array.
packet = new DatagramPacket(nioBuf.array(), nioBuf.arrayOffset(), length);
} else {
// Otherwise it will be expensive.
byte[] arrayBuf = new byte[length];
buf.getBytes(0, arrayBuf);
packet = new DatagramPacket(arrayBuf, length);
}
if (remoteAddress != null) {
packet.setSocketAddress(remoteAddress);
}
channel.socket.send(packet);
fireWriteComplete(channel, length);
future.setSuccess();
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
static void close(NioSocketChannel channel, ChannelFuture future) {
NioWorker worker = channel.worker;
boolean connected = channel.isConnected();
boolean bound = channel.isBound();
try {
channel.socket.close();
worker.cancelledKeys++;
if (channel.setClosed()) {
future.setSuccess();
if (connected) {
fireChannelDisconnected(channel);
}
if (bound) {
fireChannelUnbound(channel);
}
cleanUpWriteBuffer(channel);
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private void connect(
OioDatagramChannel channel, ChannelFuture future, SocketAddress remoteAddress) {
boolean bound = channel.isBound();
boolean connected = false;
boolean workerStarted = false;
future.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
// Clear the cached address so that the next getRemoteAddress() call
// updates the cache.
channel.remoteAddress = null;
try {
channel.socket.connect(remoteAddress);
connected = true;
// Fire events.
future.setSuccess();
if (!bound) {
fireChannelBound(channel, channel.getLocalAddress());
}
fireChannelConnected(channel, channel.getRemoteAddress());
String threadName =
"Old I/O datagram worker (channelId: "
+ channel.getId()
+ ", "
+ channel.getLocalAddress()
+ " => "
+ channel.getRemoteAddress()
+ ')';
if (!bound) {
// Start the business.
workerExecutor.execute(
new IoWorkerRunnable(
new ThreadRenamingRunnable(new OioDatagramWorker(channel), threadName)));
} else {
// Worker started by bind() - just rename.
Thread workerThread = channel.workerThread;
if (workerThread != null) {
try {
workerThread.setName(threadName);
} catch (SecurityException e) {
// Ignore.
}
}
}
workerStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (connected && !workerStarted) {
OioDatagramWorker.close(channel, future);
}
}
}
public void run() {
SocketAddress localAddress = channel.getLocalAddress();
SocketAddress remoteAddress = channel.getRemoteAddress();
if (localAddress == null || remoteAddress == null) {
if (future != null) {
future.setFailure(new ClosedChannelException());
}
close(channel, succeededFuture(channel));
return;
}
try {
if (server) {
channel.channel.configureBlocking(false);
}
synchronized (channel.interestOpsLock) {
channel.channel.register(selector, channel.getRawInterestOps(), channel);
}
if (future != null) {
channel.setConnected();
future.setSuccess();
}
if (server || !((NioClientSocketChannel) channel).boundManually) {
fireChannelBound(channel, localAddress);
}
fireChannelConnected(channel, remoteAddress);
} catch (IOException e) {
if (future != null) {
future.setFailure(e);
}
close(channel, succeededFuture(channel));
if (!(e instanceof ClosedChannelException)) {
throw new ChannelException("Failed to register a socket to the selector.", e);
}
}
}
private void setHandshakeFailure(Channel channel, SSLException cause) {
synchronized (handshakeLock) {
if (!handshaking) {
return;
}
handshaking = false;
handshaken = false;
if (handshakeFuture == null) {
handshakeFuture = future(channel);
}
}
handshakeFuture.setFailure(cause);
}
private void close(NioDatagramChannel channel, ChannelFuture future) {
try {
channel.getDatagramChannel().socket().close();
if (channel.setClosed()) {
future.setSuccess();
if (channel.isBound()) {
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (final Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private void connect(
NioDatagramChannel channel, ChannelFuture future, SocketAddress remoteAddress) {
boolean bound = channel.isBound();
boolean connected = false;
boolean workerStarted = false;
future.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
// Clear the cached address so that the next getRemoteAddress() call
// updates the cache.
channel.remoteAddress = null;
try {
channel.getDatagramChannel().connect(remoteAddress);
connected = true;
// Fire events.
future.setSuccess();
if (!bound) {
fireChannelBound(channel, channel.getLocalAddress());
}
fireChannelConnected(channel, channel.getRemoteAddress());
if (!bound) {
channel.worker.register(channel, future);
}
workerStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (connected && !workerStarted) {
channel.worker.close(channel, future);
}
}
}
static void setInterestOps(OioDatagramChannel channel, ChannelFuture future, int interestOps) {
// Override OP_WRITE flag - a user cannot change this flag.
interestOps &= ~Channel.OP_WRITE;
interestOps |= channel.getInterestOps() & Channel.OP_WRITE;
boolean changed = false;
try {
if (channel.getInterestOps() != interestOps) {
if ((interestOps & Channel.OP_READ) != 0) {
channel.setInterestOpsNow(Channel.OP_READ);
} else {
channel.setInterestOpsNow(Channel.OP_NONE);
}
changed = true;
}
future.setSuccess();
if (changed) {
synchronized (channel.interestOpsLock) {
channel.setInterestOpsNow(interestOps);
// Notify the worker so it stops or continues reading.
Thread currentThread = Thread.currentThread();
Thread workerThread = channel.workerThread;
if (workerThread != null && currentThread != workerThread) {
workerThread.interrupt();
}
}
fireChannelInterestChanged(channel);
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
@Test
public void shouldNotPropagateDownstreamFlushOnPipelineFutureFailure() throws Exception {
context.checking(
new Expectations() {
{
oneOf(upstream)
.handleUpstream(
with(any(ChannelHandlerContext.class)), with(any(PreparationEvent.class)));
oneOf(upstream)
.handleUpstream(
with(any(ChannelHandlerContext.class)), with(channelState(OPEN, TRUE)));
}
});
channelFactory.newChannel(pipeline);
ChannelFuture executionFuture = execution.getHandlerFuture();
executionFuture.setFailure(new ChannelException("pipeline already failed"));
ChannelFuture handlerFuture = handler.getHandlerFuture();
assertFalse(handlerFuture.isDone());
context.assertIsSatisfied();
}
static void disconnect(OioDatagramChannel channel, ChannelFuture future) {
boolean connected = channel.isConnected();
try {
channel.socket.disconnect();
future.setSuccess();
if (connected) {
// Update the worker's thread name to reflect the state change.
Thread workerThread = channel.workerThread;
if (workerThread != null) {
try {
workerThread.setName("Old I/O datagram worker (" + channel + ')');
} catch (SecurityException e) {
// Ignore.
}
}
// Notify.
fireChannelDisconnected(channel);
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
static void setInterestOps(NioSocketChannel channel, ChannelFuture future, int interestOps) {
boolean changed = false;
try {
// interestOps can change at any time and at any thread.
// Acquire a lock to avoid possible race condition.
synchronized (channel.interestOpsLock) {
NioWorker worker = channel.worker;
Selector selector = worker.selector;
SelectionKey key = channel.socket.keyFor(selector);
if (key == null || selector == null) {
// Not registered to the worker yet.
// Set the rawInterestOps immediately; RegisterTask will pick it up.
channel.setRawInterestOpsNow(interestOps);
return;
}
// Override OP_WRITE flag - a user cannot change this flag.
interestOps &= ~Channel.OP_WRITE;
interestOps |= channel.getRawInterestOps() & Channel.OP_WRITE;
switch (CONSTRAINT_LEVEL) {
case 0:
if (channel.getRawInterestOps() != interestOps) {
key.interestOps(interestOps);
if (Thread.currentThread() != worker.thread
&& worker.wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
changed = true;
}
break;
case 1:
case 2:
if (channel.getRawInterestOps() != interestOps) {
if (Thread.currentThread() == worker.thread) {
key.interestOps(interestOps);
changed = true;
} else {
worker.selectorGuard.readLock().lock();
try {
if (worker.wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
key.interestOps(interestOps);
changed = true;
} finally {
worker.selectorGuard.readLock().unlock();
}
}
}
break;
default:
throw new Error();
}
}
future.setSuccess();
if (changed) {
channel.setRawInterestOpsNow(interestOps);
fireChannelInterestChanged(channel);
}
} catch (CancelledKeyException e) {
// setInterestOps() was called on a closed channel.
ClosedChannelException cce = new ClosedChannelException();
future.setFailure(cce);
fireExceptionCaught(channel, cce);
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}