Class EpollDatagramChannel

java.lang.Object

io.netty.util.DefaultAttributeMap

io.netty.channel.AbstractChannel

io.netty.channel.epoll.EpollDatagramChannel

All Implemented Interfaces:

Channel, ChannelOutboundInvoker, DatagramChannel, UnixChannel, AttributeMap, Comparable<Channel>

public final class EpollDatagramChannel
extends AbstractChannel
implements DatagramChannel

DatagramChannel implementation that uses linux EPOLL.

Nested Class Summary

Nested classes/interfaces inherited from class AbstractChannel

AbstractChannel.AbstractUnsafe

Modifier and Type	Class	Description
protected class	AbstractChannel.AbstractUnsafe	Channel.Unsafe implementation which sub-classes must extend and use.

Nested classes/interfaces inherited from interface Channel

Channel.Unsafe

Modifier and Type	Interface	Description
static interface	Channel.Unsafe	Unsafe operations that should never be called from user-code.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	active
protected final LinuxSocket	socket

Constructor Summary

Constructors

Constructor	Description
EpollDatagramChannel()	Create a new instance which selects the SocketProtocolFamily to use depending on the Operation Systems default which will be chosen.
EpollDatagramChannel(int fd)	Create a new instance which selects the SocketProtocolFamily to use depending on the Operation Systems default which will be chosen.
EpollDatagramChannel(InternetProtocolFamily family)	Deprecated. use EpollDatagramChannel(SocketProtocolFamily)
EpollDatagramChannel(SocketProtocolFamily family)	Create a new instance using the given SocketProtocolFamily.

Method Summary

Modifier and Type	Method	Description
ChannelFuture	block(InetAddress multicastAddress, InetAddress sourceToBlock)	Block the given sourceToBlock address for the given multicastAddress and notifies the ChannelFuture once the operation completes.
ChannelFuture	block(InetAddress multicastAddress, InetAddress sourceToBlock, ChannelPromise promise)	Block the given sourceToBlock address for the given multicastAddress and notifies the ChannelFuture once the operation completes.
ChannelFuture	block(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress sourceToBlock)	Block the given sourceToBlock address for the given multicastAddress on the given networkInterface and notifies the ChannelFuture once the operation completes.
ChannelFuture	block(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress sourceToBlock, ChannelPromise promise)	Block the given sourceToBlock address for the given multicastAddress on the given networkInterface and notifies the ChannelFuture once the operation completes.
protected static void	checkResolvable(InetSocketAddress addr)
EpollDatagramChannelConfig	config()	Returns the configuration of this channel.
protected void	doBeginRead()	Schedule a read operation.
protected void	doBind(SocketAddress localAddress)	Bind the Channel to the SocketAddress
protected void	doClose()	Close the Channel
protected boolean	doConnect(SocketAddress remoteAddress, SocketAddress localAddress)	Connect to the remote peer
protected void	doDeregister()	Deregister the Channel from its EventLoop.
protected void	doDisconnect()	Disconnect this Channel from its remote peer
protected final int	doReadBytes(ByteBuf byteBuf)	Read bytes into the given ByteBuf and return the amount.
protected void	doRegister(ChannelPromise promise)	Is called after the Channel is registered with its EventLoop as part of the register process.
protected void	doWrite(ChannelOutboundBuffer in)	Flush the content of the given buffer to the remote peer.
protected final int	doWriteBytes(ChannelOutboundBuffer in, ByteBuf buf)
final FileDescriptor	fd()	Returns the FileDescriptor that is used by this Channel.
protected Object	filterOutboundMessage(Object msg)	Invoked when a new message is added to a ChannelOutboundBuffer of this AbstractChannel, so that the Channel implementation converts the message to another.
boolean	isActive()	Return true if the Channel is active and so connected.
protected boolean	isCompatible(EventLoop loop)	Return true if the given EventLoop is compatible with this instance.
boolean	isConnected()	Return true if the DatagramChannel is connected to the remote peer.
boolean	isOpen()	Returns true if the Channel is open and may get active later
static boolean	isSegmentedDatagramPacketSupported()	Returns true if SegmentedDatagramPacket is supported natively.
ChannelFuture	joinGroup(InetAddress multicastAddress)	Joins a multicast group and notifies the ChannelFuture once the operation completes.
ChannelFuture	joinGroup(InetAddress multicastAddress, ChannelPromise promise)	Joins a multicast group and notifies the ChannelFuture once the operation completes.
ChannelFuture	joinGroup(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source)	Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.
ChannelFuture	joinGroup(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source, ChannelPromise promise)	Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.
ChannelFuture	joinGroup(InetSocketAddress multicastAddress, NetworkInterface networkInterface)	Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.
ChannelFuture	joinGroup(InetSocketAddress multicastAddress, NetworkInterface networkInterface, ChannelPromise promise)	Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetAddress multicastAddress)	Leaves a multicast group and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetAddress multicastAddress, ChannelPromise promise)	Leaves a multicast group and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source)	Leave the specified multicast group at the specified interface using the specified source and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetAddress multicastAddress, NetworkInterface networkInterface, InetAddress source, ChannelPromise promise)	Leave the specified multicast group at the specified interface using the specified source and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetSocketAddress multicastAddress, NetworkInterface networkInterface)	Leaves a multicast group on a specified local interface and notifies the ChannelFuture once the operation completes.
ChannelFuture	leaveGroup(InetSocketAddress multicastAddress, NetworkInterface networkInterface, ChannelPromise promise)	Leaves a multicast group on a specified local interface and notifies the ChannelFuture once the operation completes.
InetSocketAddress	localAddress()	Returns the local address where this channel is bound to.
protected SocketAddress	localAddress0()	Returns the SocketAddress which is bound locally.
ChannelMetadata	metadata()	Return the ChannelMetadata of the Channel which describe the nature of the Channel.
protected final ByteBuf	newDirectBuffer(ByteBuf buf)	Returns an off-heap copy of the specified ByteBuf, and releases the original one.
protected final ByteBuf	newDirectBuffer(Object holder, ByteBuf buf)	Returns an off-heap copy of the specified ByteBuf, and releases the specified holder.
protected io.netty.channel.epoll.AbstractEpollChannel.AbstractEpollUnsafe	newUnsafe()	Create a new AbstractChannel.AbstractUnsafe instance which will be used for the life-time of the Channel
protected final IoRegistration	registration()
InetSocketAddress	remoteAddress()	Returns the remote address where this channel is connected to.
protected SocketAddress	remoteAddress0()	Return the SocketAddress which the Channel is connected to.
protected void	setFlag(int flag)

Methods inherited from class AbstractChannel

closeFuture, compareTo, doRegister, doShutdownOutput, equals, eventLoop, hashCode, id, invalidateLocalAddress, invalidateRemoteAddress, isRegistered, maxMessagesPerWrite, newChannelPipeline, newId, parent, pipeline, toString, unsafe, validateFileRegion, voidPromise

Modifier and Type	Method	Description
ChannelFuture	closeFuture()	Returns the ChannelFuture which will be notified when this channel is closed.
final int	compareTo(Channel o)
protected void	doRegister()	Deprecated. use AbstractChannel.doRegister(ChannelPromise)
protected void	doShutdownOutput()	Called when conditions justify shutting down the output portion of the channel.
final boolean	equals(Object o)	Returns true if and only if the specified object is identical with this channel (i.e: this == o).
EventLoop	eventLoop()	Return the EventLoop this Channel was registered to.
final int	hashCode()	Returns the ID of this channel.
final ChannelId	id()	Returns the globally unique identifier of this Channel.
protected void	invalidateLocalAddress()	Deprecated. no use-case for this.
protected void	invalidateRemoteAddress()	Deprecated. no use-case for this.
boolean	isRegistered()	Returns true if the Channel is registered with an EventLoop.
protected final int	maxMessagesPerWrite()
protected DefaultChannelPipeline	newChannelPipeline()	Returns a new DefaultChannelPipeline instance.
protected ChannelId	newId()	Returns a new DefaultChannelId instance.
Channel	parent()	Returns the parent of this channel.
ChannelPipeline	pipeline()	Return the assigned ChannelPipeline.
String	toString()	Returns the String representation of this channel.
Channel.Unsafe	unsafe()	Returns an internal-use-only object that provides unsafe operations.
protected void	validateFileRegion(DefaultFileRegion region, long position)
final ChannelPromise	voidPromise()	Return a special ChannelPromise which can be reused for different operations.

Methods inherited from class DefaultAttributeMap

attr, hasAttr

Modifier and Type	Method	Description
<T> Attribute<T>	attr(AttributeKey<T> key)	Get the Attribute for the given AttributeKey.
<T> boolean	hasAttr(AttributeKey<T> key)	Returns true if and only if the given Attribute exists in this AttributeMap.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Channel

alloc, bind, bind, bytesBeforeUnwritable, bytesBeforeWritable, close, close, connect, connect, connect, connect, deregister, deregister, disconnect, disconnect, flush, getOption, isWritable, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, read, setOption, write, write, writeAndFlush, writeAndFlush

Modifier and Type	Method	Description
default ByteBufAllocator	alloc()	Return the assigned ByteBufAllocator which will be used to allocate ByteBufs.
default ChannelFuture	bind(SocketAddress localAddress)	Request to bind to the given SocketAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	bind(SocketAddress localAddress, ChannelPromise promise)	Request to bind to the given SocketAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default long	bytesBeforeUnwritable()	Get how many bytes can be written until Channel.isWritable() returns false.
default long	bytesBeforeWritable()	Get how many bytes must be drained from underlying buffers until Channel.isWritable() returns true.
default ChannelFuture	close()	Request to close the Channel and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	close(ChannelPromise promise)	Request to close the Channel and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	connect(SocketAddress remoteAddress)	Request to connect to the given SocketAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	connect(SocketAddress remoteAddress, ChannelPromise promise)	Request to connect to the given SocketAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	connect(SocketAddress remoteAddress, SocketAddress localAddress)	Request to connect to the given SocketAddress while bind to the localAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	connect(SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise)	Request to connect to the given SocketAddress while bind to the localAddress and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	deregister()	Request to deregister from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	deregister(ChannelPromise promise)	Request to deregister from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	disconnect()	Request to disconnect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default ChannelFuture	disconnect(ChannelPromise promise)	Request to disconnect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
default Channel	flush()	Request to flush all pending messages via this ChannelOutboundInvoker.
default <T> T	getOption(ChannelOption<T> option)	Return the value of the given ChannelOption
default boolean	isWritable()	Returns true if and only if the I/O thread will perform the requested write operation immediately.
default ChannelFuture	newFailedFuture(Throwable cause)	Create a new ChannelFuture which is marked as failed already.
default ChannelProgressivePromise	newProgressivePromise()	Return an new ChannelProgressivePromise
default ChannelPromise	newPromise()	Return a new ChannelPromise.
default ChannelFuture	newSucceededFuture()	Create a new ChannelFuture which is marked as succeeded already.
default Channel	read()	Request to Read data from the Channel into the first inbound buffer, triggers an ChannelInboundHandler.channelRead(ChannelHandlerContext, Object) event if data was read, and triggers a channelReadComplete event so the handler can decide to continue reading.
default <T> boolean	setOption(ChannelOption<T> option, T value)	Sets a configuration property with the specified name and value.
default ChannelFuture	write(Object msg)	Request to write a message via this ChannelHandlerContext through the ChannelPipeline.
default ChannelFuture	write(Object msg, ChannelPromise promise)	Request to write a message via this ChannelHandlerContext through the ChannelPipeline.
default ChannelFuture	writeAndFlush(Object msg)	Shortcut for call ChannelOutboundInvoker.write(Object) and ChannelOutboundInvoker.flush().
default ChannelFuture	writeAndFlush(Object msg, ChannelPromise promise)	Shortcut for call ChannelOutboundInvoker.write(Object, ChannelPromise) and ChannelOutboundInvoker.flush().

Field Details

socket

protected final LinuxSocket socket

active

protected volatile boolean active

Constructor Details

EpollDatagramChannel

public EpollDatagramChannel()

Create a new instance which selects the SocketProtocolFamily to use depending on the Operation Systems default which will be chosen.

EpollDatagramChannel

@Deprecated
public EpollDatagramChannel(InternetProtocolFamily family)

Deprecated.

use EpollDatagramChannel(SocketProtocolFamily)

Create a new instance using the given InternetProtocolFamily. If null is used it will depend on the Operation Systems default which will be chosen.

EpollDatagramChannel

public EpollDatagramChannel(SocketProtocolFamily family)

Create a new instance using the given SocketProtocolFamily. If null is used it will depend on the Operation Systems default which will be chosen.

EpollDatagramChannel

public EpollDatagramChannel(int fd)

Create a new instance which selects the SocketProtocolFamily to use depending on the Operation Systems default which will be chosen.

Method Details

isSegmentedDatagramPacketSupported

public static boolean isSegmentedDatagramPacketSupported()

Returns true if SegmentedDatagramPacket is supported natively.

Returns:

true if supported, false otherwise.

remoteAddress

public InetSocketAddress remoteAddress()

Description copied from interface: Channel

Returns the remote address where this channel is connected to. The returned SocketAddress is supposed to be down-cast into more concrete type such as InetSocketAddress to retrieve the detailed information.

Specified by:

remoteAddress in interface Channel

Specified by:

remoteAddress in interface DatagramChannel

Overrides:

remoteAddress in class AbstractChannel

Returns:

the remote address of this channel. null if this channel is not connected. If this channel is not connected but it can receive messages from arbitrary remote addresses (e.g. DatagramChannel, use DefaultAddressedEnvelope.recipient() to determine the origination of the received message as this method will return null.

localAddress

public InetSocketAddress localAddress()

Description copied from interface: Channel

Returns the local address where this channel is bound to. The returned SocketAddress is supposed to be down-cast into more concrete type such as InetSocketAddress to retrieve the detailed information.

Specified by:

localAddress in interface Channel

Specified by:

localAddress in interface DatagramChannel

Overrides:

localAddress in class AbstractChannel

Returns:

the local address of this channel. null if this channel is not bound.

metadata

public ChannelMetadata metadata()

Description copied from interface: Channel

Return the ChannelMetadata of the Channel which describe the nature of the Channel.

Specified by:

metadata in interface Channel

isActive

public boolean isActive()

Description copied from interface: Channel

Return true if the Channel is active and so connected.

Specified by:

isActive in interface Channel

isConnected

public boolean isConnected()

Description copied from interface: DatagramChannel

Return true if the DatagramChannel is connected to the remote peer.

Specified by:

isConnected in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetAddress multicastAddress)

Description copied from interface: DatagramChannel

Joins a multicast group and notifies the ChannelFuture once the operation completes.

Specified by:

joinGroup in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetAddress multicastAddress,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Joins a multicast group and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

joinGroup in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetSocketAddress multicastAddress,
 NetworkInterface networkInterface)

Description copied from interface: DatagramChannel

Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.

Specified by:

joinGroup in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetSocketAddress multicastAddress,
 NetworkInterface networkInterface,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

joinGroup in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress source)

Description copied from interface: DatagramChannel

Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes.

Specified by:

joinGroup in interface DatagramChannel

joinGroup

public ChannelFuture joinGroup(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress source,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Joins the specified multicast group at the specified interface and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

joinGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetAddress multicastAddress)

Description copied from interface: DatagramChannel

Leaves a multicast group and notifies the ChannelFuture once the operation completes.

Specified by:

leaveGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetAddress multicastAddress,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Leaves a multicast group and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

leaveGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetSocketAddress multicastAddress,
 NetworkInterface networkInterface)

Description copied from interface: DatagramChannel

Leaves a multicast group on a specified local interface and notifies the ChannelFuture once the operation completes.

Specified by:

leaveGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetSocketAddress multicastAddress,
 NetworkInterface networkInterface,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Leaves a multicast group on a specified local interface and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

leaveGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress source)

Description copied from interface: DatagramChannel

Leave the specified multicast group at the specified interface using the specified source and notifies the ChannelFuture once the operation completes.

Specified by:

leaveGroup in interface DatagramChannel

leaveGroup

public ChannelFuture leaveGroup(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress source,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Leave the specified multicast group at the specified interface using the specified source and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

leaveGroup in interface DatagramChannel

block

public ChannelFuture block(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress sourceToBlock)

Description copied from interface: DatagramChannel

Block the given sourceToBlock address for the given multicastAddress on the given networkInterface and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

block in interface DatagramChannel

block

public ChannelFuture block(InetAddress multicastAddress,
 NetworkInterface networkInterface,
 InetAddress sourceToBlock,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Block the given sourceToBlock address for the given multicastAddress on the given networkInterface and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

block in interface DatagramChannel

block

public ChannelFuture block(InetAddress multicastAddress,
 InetAddress sourceToBlock)

Description copied from interface: DatagramChannel

Block the given sourceToBlock address for the given multicastAddress and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

block in interface DatagramChannel

block

public ChannelFuture block(InetAddress multicastAddress,
 InetAddress sourceToBlock,
 ChannelPromise promise)

Description copied from interface: DatagramChannel

Block the given sourceToBlock address for the given multicastAddress and notifies the ChannelFuture once the operation completes. The given ChannelFuture will be notified and also returned.

Specified by:

block in interface DatagramChannel

newUnsafe

protected io.netty.channel.epoll.AbstractEpollChannel.AbstractEpollUnsafe newUnsafe()

Description copied from class: AbstractChannel

Create a new AbstractChannel.AbstractUnsafe instance which will be used for the life-time of the Channel

doRegister

protected void doRegister(ChannelPromise promise)

Description copied from class: AbstractChannel

Is called after the Channel is registered with its EventLoop as part of the register process. Subclasses may override this method

Parameters:

promise - ChannelPromise that must be notified once done to continue the registration.

doBind

protected void doBind(SocketAddress localAddress)
               throws Exception

Description copied from class: AbstractChannel

Bind the Channel to the SocketAddress

Throws:

Exception

doWrite

protected void doWrite(ChannelOutboundBuffer in)
                throws Exception

Description copied from class: AbstractChannel

Flush the content of the given buffer to the remote peer.

Specified by:

doWrite in class AbstractChannel

Throws:

Exception

filterOutboundMessage

protected Object filterOutboundMessage(Object msg)

Description copied from class: AbstractChannel

Invoked when a new message is added to a ChannelOutboundBuffer of this AbstractChannel, so that the Channel implementation converts the message to another. (e.g. heap buffer -> direct buffer)

Overrides:

filterOutboundMessage in class AbstractChannel

config

public EpollDatagramChannelConfig config()

Description copied from interface: Channel

Returns the configuration of this channel.

Specified by:

config in interface Channel

Specified by:

config in interface DatagramChannel

doDisconnect

protected void doDisconnect()
                     throws Exception

Description copied from class: AbstractChannel

Disconnect this Channel from its remote peer

Throws:

Exception

doConnect

protected boolean doConnect(SocketAddress remoteAddress,
 SocketAddress localAddress)
                     throws Exception

Connect to the remote peer

Throws:

Exception

doClose

protected void doClose()
                throws Exception

Description copied from class: AbstractChannel

Close the Channel

Throws:

Exception

setFlag

protected void setFlag(int flag)
                throws IOException

Throws:

IOException

registration

protected final IoRegistration registration()

fd

public final FileDescriptor fd()

Description copied from interface: UnixChannel

Returns the FileDescriptor that is used by this Channel.

Specified by:

fd in interface UnixChannel

isOpen

public boolean isOpen()

Description copied from interface: Channel

Returns true if the Channel is open and may get active later

Specified by:

isOpen in interface Channel

doDeregister

protected void doDeregister()
                     throws Exception

Description copied from class: AbstractChannel

Deregister the Channel from its EventLoop. Sub-classes may override this method

Overrides:

doDeregister in class AbstractChannel

Throws:

Exception

isCompatible

protected boolean isCompatible(EventLoop loop)

Description copied from class: AbstractChannel

Return true if the given EventLoop is compatible with this instance.

Specified by:

isCompatible in class AbstractChannel

doBeginRead

protected void doBeginRead()
                    throws Exception

Description copied from class: AbstractChannel

Schedule a read operation.

Specified by:

doBeginRead in class AbstractChannel

Throws:

Exception

newDirectBuffer

protected final ByteBuf newDirectBuffer(ByteBuf buf)

Returns an off-heap copy of the specified ByteBuf, and releases the original one.

newDirectBuffer

protected final ByteBuf newDirectBuffer(Object holder,
 ByteBuf buf)

Returns an off-heap copy of the specified ByteBuf, and releases the specified holder. The caller must ensure that the holder releases the original ByteBuf when the holder is released by this method.

checkResolvable

protected static void checkResolvable(InetSocketAddress addr)

doReadBytes

protected final int doReadBytes(ByteBuf byteBuf)
                         throws Exception

Read bytes into the given ByteBuf and return the amount.

Throws:

Exception

doWriteBytes

protected final int doWriteBytes(ChannelOutboundBuffer in,
 ByteBuf buf)
                          throws Exception

Throws:

Exception

localAddress0

protected SocketAddress localAddress0()

Description copied from class: AbstractChannel

Returns the SocketAddress which is bound locally.

Specified by:

localAddress0 in class AbstractChannel

remoteAddress0

protected SocketAddress remoteAddress0()

Description copied from class: AbstractChannel

Return the SocketAddress which the Channel is connected to.

Specified by:

remoteAddress0 in class AbstractChannel