@Override
public String toString() {
StringBuilder buf = new StringBuilder().append(StringUtil.simpleClassName(this)).append('(');
if (group != null) {
buf.append("group: ").append(StringUtil.simpleClassName(group)).append(", ");
}
if (channelFactory != null) {
buf.append("channelFactory: ").append(channelFactory).append(", ");
}
if (localAddress != null) {
buf.append("localAddress: ").append(localAddress).append(", ");
}
synchronized (options) {
if (!options.isEmpty()) {
buf.append("options: ").append(options).append(", ");
}
}
synchronized (attrs) {
if (!attrs.isEmpty()) {
buf.append("attrs: ").append(attrs).append(", ");
}
}
if (handler != null) {
buf.append("handler: ").append(handler).append(", ");
}
if (buf.charAt(buf.length() - 1) == '(') {
buf.append(')');
} else {
buf.setCharAt(buf.length() - 2, ')');
buf.setLength(buf.length() - 1);
}
return buf.toString();
}
/**
* If there's no match, returns the result with {@link #notFound(Object) notFound} as the target
* if it is set, otherwise returns {@code null}.
*/
public RouteResult<T> route(final HttpMethod method, final String uri) {
final QueryStringDecoder decoder = new QueryStringDecoder(uri);
final String[] tokens = StringUtil.split(Path.removeSlashesAtBothEnds(decoder.path()), '/');
MethodlessRouter<T> router = routers.get(method);
if (router == null) {
router = anyMethodRouter;
}
RouteResult<T> ret = router.route(tokens);
if (ret != null) {
return new RouteResult<T>(ret.target(), ret.pathParams(), decoder.parameters());
}
if (router != anyMethodRouter) {
ret = anyMethodRouter.route(tokens);
if (ret != null) {
return new RouteResult<T>(ret.target(), ret.pathParams(), decoder.parameters());
}
}
if (notFound != null) {
// Return mutable map to be consistent, instead of
// Collections.<String, String>emptyMap()
return new RouteResult<T>(notFound, new HashMap<String, String>(), decoder.parameters());
}
return null;
}
@Override
protected Object filterOutboundMessage(Object msg) {
if (msg instanceof DatagramPacket) {
DatagramPacket p = (DatagramPacket) msg;
ByteBuf content = p.content();
if (isSingleDirectBuffer(content)) {
return p;
}
return new DatagramPacket(newDirectBuffer(p, content), p.recipient());
}
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
if (isSingleDirectBuffer(buf)) {
return buf;
}
return newDirectBuffer(buf);
}
if (msg instanceof AddressedEnvelope) {
@SuppressWarnings("unchecked")
AddressedEnvelope<Object, SocketAddress> e = (AddressedEnvelope<Object, SocketAddress>) msg;
if (e.content() instanceof ByteBuf) {
ByteBuf content = (ByteBuf) e.content();
if (isSingleDirectBuffer(content)) {
return e;
}
return new DefaultAddressedEnvelope<ByteBuf, SocketAddress>(
newDirectBuffer(e, content), e.recipient());
}
}
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg) + EXPECTED_TYPES);
}
@Override
protected int doWrite(MessageList<Object> msgs, int index) throws Exception {
int size = msgs.size();
int writeIndex = index;
for (; ; ) {
if (writeIndex >= size) {
break;
}
Object msg = msgs.get(writeIndex);
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
while (buf.isReadable()) {
doWriteBytes(buf);
}
buf.release();
writeIndex++;
} else if (msg instanceof FileRegion) {
FileRegion region = (FileRegion) msg;
doWriteFileRegion(region);
region.release();
writeIndex++;
} else {
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg));
}
}
return writeIndex - index;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder();
buf.append(StringUtil.simpleClassName(this));
buf.append("(last: ");
buf.append(isLast());
buf.append("; unidirectional: ");
buf.append(isUnidirectional());
buf.append(')');
buf.append(StringUtil.NEWLINE);
buf.append("--> Stream-ID = ");
buf.append(streamId());
buf.append(StringUtil.NEWLINE);
if (associatedStreamId != 0) {
buf.append("--> Associated-To-Stream-ID = ");
buf.append(associatedStreamId());
buf.append(StringUtil.NEWLINE);
}
buf.append("--> Priority = ");
buf.append(priority());
buf.append(StringUtil.NEWLINE);
buf.append("--> Headers:");
buf.append(StringUtil.NEWLINE);
appendHeaders(buf);
// Remove the last newline.
buf.setLength(buf.length() - StringUtil.NEWLINE.length());
return buf.toString();
}
private void handleWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame) {
if (logger.isLoggable(Level.FINE)) {
logger.fine(
String.format(
"Channel %s received %s",
ctx.channel().hashCode(), StringUtil.simpleClassName(frame)));
}
if (frame instanceof CloseWebSocketFrame) {
handshaker.close(ctx.channel(), (CloseWebSocketFrame) frame);
} else if (frame instanceof PingWebSocketFrame) {
ctx.write(new PongWebSocketFrame(frame.isFinalFragment(), frame.rsv(), frame.content()));
} else if (frame instanceof TextWebSocketFrame) {
ctx.write(frame);
} else if (frame instanceof BinaryWebSocketFrame) {
ctx.write(frame);
} else if (frame instanceof ContinuationWebSocketFrame) {
ctx.write(frame);
} else if (frame instanceof PongWebSocketFrame) {
frame.release();
// Ignore
} else {
throw new UnsupportedOperationException(
String.format("%s frame types not supported", frame.getClass().getName()));
}
}
@Override
public String toString() {
return StringUtil.simpleClassName(ChannelHandlerContext.class)
+ '('
+ name
+ ", "
+ channel
+ ')';
}
protected SpdyOrHttpChooser.SelectedProtocol getProtocol(SSLEngine var1) {
String[] var2 = StringUtil.split(var1.getSession().getProtocol(), ':');
if (var2.length < 2) {
return SpdyOrHttpChooser.SelectedProtocol.HTTP_1_1;
} else {
SpdyOrHttpChooser.SelectedProtocol var3 =
SpdyOrHttpChooser.SelectedProtocol.protocol(var2[1]);
return var3;
}
}
@Override
protected final Object filterOutboundMessage(Object msg) throws Exception {
if (msg instanceof SctpMessage) {
SctpMessage m = (SctpMessage) msg;
ByteBuf buf = m.content();
if (buf.isDirect() && buf.nioBufferCount() == 1) {
return m;
}
return new SctpMessage(
m.protocolIdentifier(), m.streamIdentifier(), m.isUnordered(), newDirectBuffer(m, buf));
}
throw new UnsupportedOperationException(
"unsupported message type: "
+ StringUtil.simpleClassName(msg)
+ " (expected: "
+ StringUtil.simpleClassName(SctpMessage.class));
}
private static int contentLength(Object msg) {
if (msg instanceof HttpContent) {
return ((HttpContent) msg).content().readableBytes();
}
if (msg instanceof ByteBuf) {
return ((ByteBuf) msg).readableBytes();
}
if (msg instanceof FileRegion) {
return (int) ((FileRegion) msg).count();
}
throw new IllegalStateException("unexpected message type: " + StringUtil.simpleClassName(msg));
}
private static Object encodeAndRetain(Object msg) {
if (msg instanceof ByteBuf) {
return ((ByteBuf) msg).retain();
}
if (msg instanceof HttpContent) {
return ((HttpContent) msg).content().retain();
}
if (msg instanceof FileRegion) {
return ((FileRegion) msg).retain();
}
throw new IllegalStateException("unexpected message type: " + StringUtil.simpleClassName(msg));
}
private void reportLeak(Level level) {
if (!logger.isErrorEnabled()) {
for (; ; ) {
ResourceLeakDetector<T>.DefaultResourceLeak ref =
(DefaultResourceLeak) this.refQueue.poll();
if (ref == null) {
break;
}
ref.close();
}
return;
}
int samplingInterval = level == Level.PARANOID ? 1 : this.samplingInterval;
if ((this.active * samplingInterval > this.maxActive)
&& (this.loggedTooManyActive.compareAndSet(false, true))) {
logger.error(
"LEAK: You are creating too many "
+ this.resourceType
+ " instances. "
+ this.resourceType
+ " is a shared resource that must be reused across the JVM,"
+ "so that only a few instances are created.");
}
for (; ; ) {
ResourceLeakDetector<T>.DefaultResourceLeak ref = (DefaultResourceLeak) this.refQueue.poll();
if (ref == null) {
break;
}
ref.clear();
if (ref.close()) {
String records = ref.toString();
if (this.reportedLeaks.putIfAbsent(records, Boolean.TRUE) == null) {
if (records.isEmpty()) {
logger.error(
"LEAK: {}.release() was not called before it's garbage-collected. Enable advanced leak reporting to find out where the leak occurred. To enable advanced leak reporting, specify the JVM option '-D{}={}' or call {}.setLevel()",
new Object[] {
this.resourceType,
"io.netty.leakDetectionLevel",
Level.ADVANCED.name().toLowerCase(),
StringUtil.simpleClassName(this)
});
} else {
logger.error(
"LEAK: {}.release() was not called before it's garbage-collected.{}",
this.resourceType,
records);
}
}
}
}
}
/**
* Returns allowed methods for a specific URI.
*
* <p>For {@code OPTIONS *}, use {@link #allAllowedMethods()} instead of this method.
*/
public Set<HttpMethod> allowedMethods(final String uri) {
final QueryStringDecoder decoder = new QueryStringDecoder(uri);
final String[] tokens = StringUtil.split(Path.removeSlashesAtBothEnds(decoder.path()), '/');
if (anyMethodRouter.anyMatched(tokens)) {
return allAllowedMethods();
}
final Set<HttpMethod> ret = new HashSet<HttpMethod>(routers.size());
for (Map.Entry<HttpMethod, MethodlessRouter<T>> entry : routers.entrySet()) {
final MethodlessRouter<T> router = entry.getValue();
if (router.anyMatched(tokens)) {
final HttpMethod method = entry.getKey();
ret.add(method);
}
}
return ret;
}
/**
* 处理网络事件
*
* @param key
* @throws IOException
*/
private static void handle(SelectionKey key, Selector selector) throws IOException {
if (key.isValid()) {
if (key.isAcceptable()) {
// 1、客户端请求连接事件(对应：serverChannel.register(selector, SelectionKey.OP_ACCEPT))
ServerSocketChannel serverChannel = (ServerSocketChannel) key.channel();
// 2、接受并得到客户端连接
SocketChannel channel = serverChannel.accept();
// 3、设置为非阻塞模式
channel.configureBlocking(false);
// 4、得到客户端连接后，并不立即读取io,而是把客户端连接注册到多路复用器上,并监听读io事件
channel.register(selector, SelectionKey.OP_READ);
}
if (key.isReadable()) {
// 处理io读事件，(对应：channel.register(selector, SelectionKey.OP_READ);)
SocketChannel channel = (SocketChannel) key.channel();
ByteBuffer buffer = ByteBuffer.allocate(1024);
// 把客户端请求数据读到buffer中
int readBytes = channel.read(buffer);
if (readBytes > 0) {
buffer.flip();
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
// 得到输入的字符串
String inputStr = new String(bytes, CharsetUtil.UTF_8);
System.out.println("收到的输入：" + inputStr);
// 把了输入的字符串写回客户端
if (!StringUtil.isNullOrEmpty(inputStr)) {
byte[] resp = inputStr.getBytes(CharsetUtil.UTF_8);
ByteBuffer wBuffer = ByteBuffer.allocate(resp.length);
wBuffer.put(resp);
wBuffer.flip();
// 写回客户端
channel.write(wBuffer);
}
}
}
}
}
@Override
protected void encodeInitialLine(final ByteBuf buf, final HttpMessage message) throws Exception {
if (message instanceof HttpRequest) {
HttpRequest request = (HttpRequest) message;
ByteBufUtil.writeAscii(buf, request.method().asciiName());
buf.writeByte(SP);
buf.writeBytes(request.uri().getBytes(CharsetUtil.UTF_8));
buf.writeByte(SP);
ByteBufUtil.writeAscii(buf, request.protocolVersion().text());
buf.writeBytes(CRLF);
} else if (message instanceof HttpResponse) {
HttpResponse response = (HttpResponse) message;
ByteBufUtil.writeAscii(buf, response.protocolVersion().text());
buf.writeByte(SP);
buf.writeBytes(String.valueOf(response.status().code()).getBytes(CharsetUtil.US_ASCII));
buf.writeByte(SP);
ByteBufUtil.writeAscii(buf, response.status().reasonPhrase());
buf.writeBytes(CRLF);
} else {
throw new UnsupportedMessageTypeException(
"Unsupported type " + StringUtil.simpleClassName(message));
}
}
/**
* An NIO datagram {@link Channel} that sends and receives an {@link AddressedEnvelope
* AddressedEnvelope<ByteBuf, SocketAddress>}.
*
* @see AddressedEnvelope
* @see DatagramPacket
*/
public final class NioDatagramChannel extends AbstractNioMessageChannel
implements io.netty.channel.socket.DatagramChannel {
private static final ChannelMetadata METADATA = new ChannelMetadata(true);
private static final SelectorProvider DEFAULT_SELECTOR_PROVIDER = SelectorProvider.provider();
private static final String EXPECTED_TYPES =
" (expected: "
+ StringUtil.simpleClassName(DatagramPacket.class)
+ ", "
+ StringUtil.simpleClassName(AddressedEnvelope.class)
+ '<'
+ StringUtil.simpleClassName(ByteBuf.class)
+ ", "
+ StringUtil.simpleClassName(SocketAddress.class)
+ ">, "
+ StringUtil.simpleClassName(ByteBuf.class)
+ ')';
private final DatagramChannelConfig config;
private Map<InetAddress, List<MembershipKey>> memberships;
private static DatagramChannel newSocket(SelectorProvider provider) {
try {
/**
* Use the {@link SelectorProvider} to open {@link SocketChannel} and so remove condition in
* {@link SelectorProvider#provider()} which is called by each DatagramChannel.open()
* otherwise.
*
* <p>See <a href="https://github.com/netty/netty/issues/2308">#2308</a>.
*/
return provider.openDatagramChannel();
} catch (IOException e) {
throw new ChannelException("Failed to open a socket.", e);
}
}
private static DatagramChannel newSocket(
SelectorProvider provider, InternetProtocolFamily ipFamily) {
if (ipFamily == null) {
return newSocket(provider);
}
checkJavaVersion();
try {
return provider.openDatagramChannel(ProtocolFamilyConverter.convert(ipFamily));
} catch (IOException e) {
throw new ChannelException("Failed to open a socket.", e);
}
}
private static void checkJavaVersion() {
if (PlatformDependent.javaVersion() < 7) {
throw new UnsupportedOperationException("Only supported on java 7+.");
}
}
/**
* Create a new instance which will use the Operation Systems default {@link
* InternetProtocolFamily}.
*/
public NioDatagramChannel() {
this(newSocket(DEFAULT_SELECTOR_PROVIDER));
}
/**
* Create a new instance using the given {@link SelectorProvider} which will use the Operation
* Systems default {@link InternetProtocolFamily}.
*/
public NioDatagramChannel(SelectorProvider provider) {
this(newSocket(provider));
}
/**
* Create a new instance using the given {@link InternetProtocolFamily}. If {@code null} is used
* it will depend on the Operation Systems default which will be chosen.
*/
public NioDatagramChannel(InternetProtocolFamily ipFamily) {
this(newSocket(DEFAULT_SELECTOR_PROVIDER, ipFamily));
}
/**
* Create a new instance using the given {@link SelectorProvider} and {@link
* InternetProtocolFamily}. If {@link InternetProtocolFamily} is {@code null} it will depend on
* the Operation Systems default which will be chosen.
*/
public NioDatagramChannel(SelectorProvider provider, InternetProtocolFamily ipFamily) {
this(newSocket(provider, ipFamily));
}
/** Create a new instance from the given {@link DatagramChannel}. */
public NioDatagramChannel(DatagramChannel socket) {
super(null, socket, SelectionKey.OP_READ);
config = new NioDatagramChannelConfig(this, socket);
}
@Override
public ChannelMetadata metadata() {
return METADATA;
}
@Override
public DatagramChannelConfig config() {
return config;
}
@Override
@SuppressWarnings("deprecation")
public boolean isActive() {
DatagramChannel ch = javaChannel();
return ch.isOpen()
&& (config.getOption(ChannelOption.DATAGRAM_CHANNEL_ACTIVE_ON_REGISTRATION)
&& isRegistered()
|| ch.socket().isBound());
}
@Override
public boolean isConnected() {
return javaChannel().isConnected();
}
@Override
protected DatagramChannel javaChannel() {
return (DatagramChannel) super.javaChannel();
}
@Override
protected SocketAddress localAddress0() {
return javaChannel().socket().getLocalSocketAddress();
}
@Override
protected SocketAddress remoteAddress0() {
return javaChannel().socket().getRemoteSocketAddress();
}
@Override
protected void doBind(SocketAddress localAddress) throws Exception {
javaChannel().socket().bind(localAddress);
}
@Override
protected boolean doConnect(SocketAddress remoteAddress, SocketAddress localAddress)
throws Exception {
if (localAddress != null) {
javaChannel().socket().bind(localAddress);
}
boolean success = false;
try {
javaChannel().connect(remoteAddress);
success = true;
return true;
} finally {
if (!success) {
doClose();
}
}
}
@Override
protected void doFinishConnect() throws Exception {
throw new Error();
}
@Override
protected void doDisconnect() throws Exception {
javaChannel().disconnect();
}
@Override
protected void doClose() throws Exception {
javaChannel().close();
}
@Override
protected int doReadMessages(List<Object> buf) throws Exception {
DatagramChannel ch = javaChannel();
DatagramChannelConfig config = config();
RecvByteBufAllocator.Handle allocHandle = unsafe().recvBufAllocHandle();
ByteBuf data = allocHandle.allocate(config.getAllocator());
allocHandle.attemptedBytesRead(data.writableBytes());
boolean free = true;
try {
ByteBuffer nioData = data.internalNioBuffer(data.writerIndex(), data.writableBytes());
int pos = nioData.position();
InetSocketAddress remoteAddress = (InetSocketAddress) ch.receive(nioData);
if (remoteAddress == null) {
return 0;
}
allocHandle.lastBytesRead(nioData.position() - pos);
buf.add(
new DatagramPacket(
data.writerIndex(data.writerIndex() + allocHandle.lastBytesRead()),
localAddress(),
remoteAddress));
free = false;
return 1;
} catch (Throwable cause) {
PlatformDependent.throwException(cause);
return -1;
} finally {
if (free) {
data.release();
}
}
}
@Override
protected boolean doWriteMessage(Object msg, ChannelOutboundBuffer in) throws Exception {
final SocketAddress remoteAddress;
final ByteBuf data;
if (msg instanceof AddressedEnvelope) {
@SuppressWarnings("unchecked")
AddressedEnvelope<ByteBuf, SocketAddress> envelope =
(AddressedEnvelope<ByteBuf, SocketAddress>) msg;
remoteAddress = envelope.recipient();
data = envelope.content();
} else {
data = (ByteBuf) msg;
remoteAddress = null;
}
final int dataLen = data.readableBytes();
if (dataLen == 0) {
return true;
}
final ByteBuffer nioData = data.internalNioBuffer(data.readerIndex(), dataLen);
final int writtenBytes;
if (remoteAddress != null) {
writtenBytes = javaChannel().send(nioData, remoteAddress);
} else {
writtenBytes = javaChannel().write(nioData);
}
return writtenBytes > 0;
}
@Override
protected Object filterOutboundMessage(Object msg) {
if (msg instanceof DatagramPacket) {
DatagramPacket p = (DatagramPacket) msg;
ByteBuf content = p.content();
if (isSingleDirectBuffer(content)) {
return p;
}
return new DatagramPacket(newDirectBuffer(p, content), p.recipient());
}
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
if (isSingleDirectBuffer(buf)) {
return buf;
}
return newDirectBuffer(buf);
}
if (msg instanceof AddressedEnvelope) {
@SuppressWarnings("unchecked")
AddressedEnvelope<Object, SocketAddress> e = (AddressedEnvelope<Object, SocketAddress>) msg;
if (e.content() instanceof ByteBuf) {
ByteBuf content = (ByteBuf) e.content();
if (isSingleDirectBuffer(content)) {
return e;
}
return new DefaultAddressedEnvelope<ByteBuf, SocketAddress>(
newDirectBuffer(e, content), e.recipient());
}
}
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg) + EXPECTED_TYPES);
}
/**
* Checks if the specified buffer is a direct buffer and is composed of a single NIO buffer. (We
* check this because otherwise we need to make it a non-composite buffer.)
*/
private static boolean isSingleDirectBuffer(ByteBuf buf) {
return buf.isDirect() && buf.nioBufferCount() == 1;
}
@Override
protected boolean continueOnWriteError() {
// Continue on write error as a DatagramChannel can write to multiple remote peers
//
// See https://github.com/netty/netty/issues/2665
return true;
}
@Override
public InetSocketAddress localAddress() {
return (InetSocketAddress) super.localAddress();
}
@Override
public InetSocketAddress remoteAddress() {
return (InetSocketAddress) super.remoteAddress();
}
@Override
public ChannelFuture joinGroup(InetAddress multicastAddress) {
return joinGroup(multicastAddress, newPromise());
}
@Override
public ChannelFuture joinGroup(InetAddress multicastAddress, ChannelPromise promise) {
try {
return joinGroup(
multicastAddress,
NetworkInterface.getByInetAddress(localAddress().getAddress()),
null,
promise);
} catch (SocketException e) {
promise.setFailure(e);
}
return promise;
}
@Override
public ChannelFuture joinGroup(
InetSocketAddress multicastAddress, NetworkInterface networkInterface) {
return joinGroup(multicastAddress, networkInterface, newPromise());
}
@Override
public ChannelFuture joinGroup(
InetSocketAddress multicastAddress,
NetworkInterface networkInterface,
ChannelPromise promise) {
return joinGroup(multicastAddress.getAddress(), networkInterface, null, promise);
}
@Override
public ChannelFuture joinGroup(
InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source) {
return joinGroup(multicastAddress, networkInterface, source, newPromise());
}
@Override
public ChannelFuture joinGroup(
InetAddress multicastAddress,
NetworkInterface networkInterface,
InetAddress source,
ChannelPromise promise) {
checkJavaVersion();
if (multicastAddress == null) {
throw new NullPointerException("multicastAddress");
}
if (networkInterface == null) {
throw new NullPointerException("networkInterface");
}
try {
MembershipKey key;
if (source == null) {
key = javaChannel().join(multicastAddress, networkInterface);
} else {
key = javaChannel().join(multicastAddress, networkInterface, source);
}
synchronized (this) {
List<MembershipKey> keys = null;
if (memberships == null) {
memberships = new HashMap<InetAddress, List<MembershipKey>>();
} else {
keys = memberships.get(multicastAddress);
}
if (keys == null) {
keys = new ArrayList<MembershipKey>();
memberships.put(multicastAddress, keys);
}
keys.add(key);
}
promise.setSuccess();
} catch (Throwable e) {
promise.setFailure(e);
}
return promise;
}
@Override
public ChannelFuture leaveGroup(InetAddress multicastAddress) {
return leaveGroup(multicastAddress, newPromise());
}
@Override
public ChannelFuture leaveGroup(InetAddress multicastAddress, ChannelPromise promise) {
try {
return leaveGroup(
multicastAddress,
NetworkInterface.getByInetAddress(localAddress().getAddress()),
null,
promise);
} catch (SocketException e) {
promise.setFailure(e);
}
return promise;
}
@Override
public ChannelFuture leaveGroup(
InetSocketAddress multicastAddress, NetworkInterface networkInterface) {
return leaveGroup(multicastAddress, networkInterface, newPromise());
}
@Override
public ChannelFuture leaveGroup(
InetSocketAddress multicastAddress,
NetworkInterface networkInterface,
ChannelPromise promise) {
return leaveGroup(multicastAddress.getAddress(), networkInterface, null, promise);
}
@Override
public ChannelFuture leaveGroup(
InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source) {
return leaveGroup(multicastAddress, networkInterface, source, newPromise());
}
@Override
public ChannelFuture leaveGroup(
InetAddress multicastAddress,
NetworkInterface networkInterface,
InetAddress source,
ChannelPromise promise) {
checkJavaVersion();
if (multicastAddress == null) {
throw new NullPointerException("multicastAddress");
}
if (networkInterface == null) {
throw new NullPointerException("networkInterface");
}
synchronized (this) {
if (memberships != null) {
List<MembershipKey> keys = memberships.get(multicastAddress);
if (keys != null) {
Iterator<MembershipKey> keyIt = keys.iterator();
while (keyIt.hasNext()) {
MembershipKey key = keyIt.next();
if (networkInterface.equals(key.networkInterface())) {
if (source == null && key.sourceAddress() == null
|| source != null && source.equals(key.sourceAddress())) {
key.drop();
keyIt.remove();
}
}
}
if (keys.isEmpty()) {
memberships.remove(multicastAddress);
}
}
}
}
promise.setSuccess();
return promise;
}
/**
* Block the given sourceToBlock address for the given multicastAddress on the given
* networkInterface
*/
@Override
public ChannelFuture block(
InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress sourceToBlock) {
return block(multicastAddress, networkInterface, sourceToBlock, newPromise());
}
/**
* Block the given sourceToBlock address for the given multicastAddress on the given
* networkInterface
*/
@Override
public ChannelFuture block(
InetAddress multicastAddress,
NetworkInterface networkInterface,
InetAddress sourceToBlock,
ChannelPromise promise) {
checkJavaVersion();
if (multicastAddress == null) {
throw new NullPointerException("multicastAddress");
}
if (sourceToBlock == null) {
throw new NullPointerException("sourceToBlock");
}
if (networkInterface == null) {
throw new NullPointerException("networkInterface");
}
synchronized (this) {
if (memberships != null) {
List<MembershipKey> keys = memberships.get(multicastAddress);
for (MembershipKey key : keys) {
if (networkInterface.equals(key.networkInterface())) {
try {
key.block(sourceToBlock);
} catch (IOException e) {
promise.setFailure(e);
}
}
}
}
}
promise.setSuccess();
return promise;
}
/** Block the given sourceToBlock address for the given multicastAddress */
@Override
public ChannelFuture block(InetAddress multicastAddress, InetAddress sourceToBlock) {
return block(multicastAddress, sourceToBlock, newPromise());
}
/** Block the given sourceToBlock address for the given multicastAddress */
@Override
public ChannelFuture block(
InetAddress multicastAddress, InetAddress sourceToBlock, ChannelPromise promise) {
try {
return block(
multicastAddress,
NetworkInterface.getByInetAddress(localAddress().getAddress()),
sourceToBlock,
promise);
} catch (SocketException e) {
promise.setFailure(e);
}
return promise;
}
@Override
@Deprecated
protected void setReadPending(boolean readPending) {
super.setReadPending(readPending);
}
void clearReadPending0() {
clearReadPending();
}
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + '(' + buf.toString() + ')';
}
@Override
public CombinedHttpHeaders add(CharSequence name, CharSequence value) {
return addEscapedValue(name, StringUtil.escapeCsv(value));
}
@Override
protected boolean doWriteMessage(Object msg, ChannelOutboundBuffer in) throws Exception {
final Object m;
final SocketAddress remoteAddress;
ByteBuf data;
if (msg instanceof AddressedEnvelope) {
@SuppressWarnings("unchecked")
AddressedEnvelope<Object, SocketAddress> envelope =
(AddressedEnvelope<Object, SocketAddress>) msg;
remoteAddress = envelope.recipient();
m = envelope.content();
} else {
m = msg;
remoteAddress = null;
}
if (m instanceof ByteBufHolder) {
data = ((ByteBufHolder) m).content();
} else if (m instanceof ByteBuf) {
data = (ByteBuf) m;
} else {
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg));
}
int dataLen = data.readableBytes();
if (dataLen == 0) {
return true;
}
ByteBufAllocator alloc = alloc();
boolean needsCopy = data.nioBufferCount() != 1;
if (!needsCopy) {
if (!data.isDirect() && alloc.isDirectBufferPooled()) {
needsCopy = true;
}
}
ByteBuffer nioData;
if (!needsCopy) {
nioData = data.nioBuffer();
} else {
data = alloc.directBuffer(dataLen).writeBytes(data);
nioData = data.nioBuffer();
}
final int writtenBytes;
if (remoteAddress != null) {
writtenBytes = javaChannel().send(nioData, remoteAddress);
} else {
writtenBytes = javaChannel().write(nioData);
}
boolean done = writtenBytes > 0;
if (needsCopy) {
// This means we have allocated a new buffer and need to store it back so we not need to
// allocate it again
// later
if (remoteAddress == null) {
// remoteAddress is null which means we can handle it as ByteBuf directly
in.current(data);
} else {
if (!done) {
// store it back with all the needed informations
in.current(new DefaultAddressedEnvelope<ByteBuf, SocketAddress>(data, remoteAddress));
} else {
// Just store back the new create buffer so it is cleaned up once in.remove() is called.
in.current(data);
}
}
}
return done;
}
public ResourceLeakDetector(Class<?> resourceType, int samplingInterval, long maxActive) {
this(StringUtil.simpleClassName(resourceType), samplingInterval, maxActive);
}
@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
for (; ; ) {
final int msgCount = in.size();
if (msgCount == 0) {
// Wrote all messages.
clearEpollOut();
break;
}
// Do gathering write if:
// * the outbound buffer contains more than one messages and
// * they are all buffers rather than a file region.
if (msgCount > 1) {
if (PlatformDependent.hasUnsafe()) {
// this means we can cast to EpollChannelOutboundBuffer and write the AdressEntry
// directly.
EpollChannelOutboundBuffer epollIn = (EpollChannelOutboundBuffer) in;
// Ensure the pending writes are made of memoryaddresses only.
AddressEntry[] addresses = epollIn.memoryAddresses();
if (addresses != null) {
writeBytesMultiple(epollIn, msgCount, addresses);
// We do not break the loop here even if the outbound buffer was flushed completely,
// because a user might have triggered another write and flush when we notify his or her
// listeners.
continue;
}
} else {
NioSocketChannelOutboundBuffer nioIn = (NioSocketChannelOutboundBuffer) in;
// Ensure the pending writes are made of memoryaddresses only.
ByteBuffer[] buffers = nioIn.nioBuffers();
if (buffers != null) {
writeBytesMultiple(nioIn, msgCount, buffers);
// We do not break the loop here even if the outbound buffer was flushed completely,
// because a user might have triggered another write and flush when we notify his or her
// listeners.
continue;
}
}
}
// The outbound buffer contains only one message or it contains a file region.
Object msg = in.current();
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
int readableBytes = buf.readableBytes();
if (readableBytes == 0) {
in.remove();
continue;
}
int expected = buf.readableBytes();
int localFlushedAmount = doWriteBytes(buf, expected);
in.progress(localFlushedAmount);
if (localFlushedAmount < expected) {
setEpollOut();
break;
}
if (!buf.isReadable()) {
in.remove();
}
} else if (msg instanceof DefaultFileRegion) {
DefaultFileRegion region = (DefaultFileRegion) msg;
long expected = region.count() - region.position();
long localFlushedAmount = doWriteFileRegion(region, expected);
in.progress(localFlushedAmount);
if (localFlushedAmount < expected) {
setEpollOut();
break;
}
if (region.transfered() >= region.count()) {
in.remove();
}
} else {
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg));
}
}
}
public ResourceLeakDetector(Class<?> resourceType) {
this(StringUtil.simpleClassName(resourceType));
}
@Override
protected void encode(ChannelHandlerContext ctx, Object msg, List<Object> out) throws Exception {
ByteBuf buf = null;
if (msg instanceof HttpMessage) {
if (state != ST_INIT) {
throw new IllegalStateException(
"unexpected message type: " + StringUtil.simpleClassName(msg));
}
@SuppressWarnings({"unchecked", "CastConflictsWithInstanceof"})
H m = (H) msg;
buf = ctx.alloc().buffer();
// Encode the message.
encodeInitialLine(buf, m);
HttpHeaders.encode(m.headers(), buf);
buf.writeBytes(CRLF);
state = HttpHeaders.isTransferEncodingChunked(m) ? ST_CONTENT_CHUNK : ST_CONTENT_NON_CHUNK;
}
if (msg instanceof HttpContent || msg instanceof ByteBuf || msg instanceof FileRegion) {
if (state == ST_INIT) {
throw new IllegalStateException(
"unexpected message type: " + StringUtil.simpleClassName(msg));
}
int contentLength = contentLength(msg);
if (state == ST_CONTENT_NON_CHUNK) {
if (contentLength > 0) {
if (buf != null && buf.writableBytes() >= contentLength && msg instanceof HttpContent) {
// merge into other buffer for performance reasons
buf.writeBytes(((HttpContent) msg).content());
out.add(buf);
} else {
if (buf != null) {
out.add(buf);
}
out.add(encodeAndRetain(msg));
}
} else {
if (buf != null) {
out.add(buf);
} else {
// Need to produce some output otherwise an
// IllegalStateException will be thrown
out.add(EMPTY_BUFFER);
}
}
if (msg instanceof LastHttpContent) {
state = ST_INIT;
}
} else if (state == ST_CONTENT_CHUNK) {
if (buf != null) {
out.add(buf);
}
encodeChunkedContent(ctx, msg, contentLength, out);
} else {
throw new Error();
}
} else {
if (buf != null) {
out.add(buf);
}
}
}
@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
int writeSpinCount = -1;
GatheringByteChannel sink = connection().getSinkChannel();
for (; ; ) {
// Do gathering write for a non-single buffer case.
final int msgCount = in.size();
if (msgCount > 0) {
// Ensure the pending writes are made of ByteBufs only.
ByteBuffer[] nioBuffers = in.nioBuffers();
if (nioBuffers != null) {
int nioBufferCnt = in.nioBufferCount();
long expectedWrittenBytes = in.nioBufferSize();
long writtenBytes = 0;
boolean done = false;
boolean setOpWrite = false;
for (int i = config().getWriteSpinCount() - 1; i >= 0; i--) {
final long localWrittenBytes = sink.write(nioBuffers, 0, nioBufferCnt);
if (localWrittenBytes == 0) {
setOpWrite = true;
break;
}
expectedWrittenBytes -= localWrittenBytes;
writtenBytes += localWrittenBytes;
if (expectedWrittenBytes == 0) {
done = true;
break;
}
}
if (done) {
// Release all buffers
for (int i = msgCount; i > 0; i--) {
in.remove();
}
// Finish the write loop if no new messages were flushed by in.remove().
if (in.isEmpty()) {
connection().getSinkChannel().suspendWrites();
break;
}
} else {
// Did not write all buffers completely.
// Release the fully written buffers and update the indexes of the partially written
// buffer.
for (int i = msgCount; i > 0; i--) {
final ByteBuf buf = (ByteBuf) in.current();
final int readerIndex = buf.readerIndex();
final int readableBytes = buf.writerIndex() - readerIndex;
if (readableBytes < writtenBytes) {
in.progress(readableBytes);
in.remove();
writtenBytes -= readableBytes;
} else if (readableBytes > writtenBytes) {
buf.readerIndex(readerIndex + (int) writtenBytes);
in.progress(writtenBytes);
break;
} else { // readableBytes == writtenBytes
in.progress(readableBytes);
in.remove();
break;
}
}
incompleteWrite(setOpWrite);
break;
}
continue;
}
}
Object msg = in.current();
if (msg == null) {
// Wrote all messages.
connection().getSinkChannel().suspendWrites();
break;
}
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
int readableBytes = buf.readableBytes();
if (readableBytes == 0) {
in.remove();
continue;
}
if (!buf.isDirect()) {
ByteBufAllocator alloc = alloc();
if (alloc.isDirectBufferPooled()) {
// Non-direct buffers are copied into JDK's own internal direct buffer on every I/O.
// We can do a better job by using our pooled allocator. If the current allocator does
// not
// pool a direct buffer, we rely on JDK's direct buffer pool.
buf = alloc.directBuffer(readableBytes).writeBytes(buf);
in.current(buf);
}
}
boolean setOpWrite = false;
boolean done = false;
long flushedAmount = 0;
if (writeSpinCount == -1) {
writeSpinCount = config().getWriteSpinCount();
}
for (int i = writeSpinCount - 1; i >= 0; i--) {
int localFlushedAmount = buf.readBytes(sink, buf.readableBytes());
if (localFlushedAmount == 0) {
setOpWrite = true;
break;
}
flushedAmount += localFlushedAmount;
if (!buf.isReadable()) {
done = true;
break;
}
}
in.progress(flushedAmount);
if (done) {
in.remove();
} else {
incompleteWrite(setOpWrite);
break;
}
} else if (msg instanceof FileRegion) {
FileRegion region = (FileRegion) msg;
boolean setOpWrite = false;
boolean done = false;
long flushedAmount = 0;
if (writeSpinCount == -1) {
writeSpinCount = config().getWriteSpinCount();
}
for (int i = writeSpinCount - 1; i >= 0; i--) {
long localFlushedAmount = region.transferTo(sink, region.transfered());
if (localFlushedAmount == 0) {
setOpWrite = true;
break;
}
flushedAmount += localFlushedAmount;
if (region.transfered() >= region.count()) {
done = true;
break;
}
}
in.progress(flushedAmount);
if (done) {
in.remove();
} else {
incompleteWrite(setOpWrite);
break;
}
} else {
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg));
}
}
}