io.netty.channel.socket

Interface SocketChannel

All Superinterfaces:

io.netty.util.AttributeMap, Channel, Comparable<Channel>

All Known Implementing Classes:

NioSocketChannel, OioSocketChannel

public interface SocketChannel
extends Channel

A TCP/IP socket Channel.

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.Channel

Channel.Unsafe

Method Summary

Methods

Modifier and Type	Method and Description
io.netty.buffer.ByteBufAllocator	alloc() Return the assigned ByteBufAllocator which will be used for allocate ByteBufs.
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.
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.
ChannelFuture	close() Request to close this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
ChannelFuture	close(ChannelPromise promise) Request to close this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
SocketChannelConfig	config() Returns the configuration of this channel.
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.
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.
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.
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.
ChannelFuture	deregister() Request to deregister this ChannelOutboundInvoker from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
ChannelFuture	deregister(ChannelPromise promise) Request to deregister this ChannelOutboundInvoker from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
ChannelFuture	disconnect() Request to discconect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
ChannelFuture	disconnect(ChannelPromise promise) Request to discconect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
boolean	isInputShutdown() Returns true if and only if the remote peer shut down its output so that no more data is received from this channel.
boolean	isOutputShutdown()
InetSocketAddress	localAddress() Returns the local address where this channel is bound to.
ChannelFuture	newFailedFuture(Throwable cause) Create a new ChannelFuture which is marked as fakued already.
ChannelProgressivePromise	newProgressivePromise() Return an new ChannelProgressivePromise
ChannelPromise	newPromise() Return a new ChannelPromise.
ChannelFuture	newSucceededFuture() Create a new ChannelFuture which is marked as successes already.
ServerSocketChannel	parent() Returns the parent of this channel.
ChannelPipeline	pipeline() Return the assigned ChannelPipeline
void	read() Request to Read data from the Channel into the first inbound buffer, triggers an ChannelInboundHandler.messageReceived(ChannelHandlerContext, MessageList) event if data was read, and triggers an channelReadSuspended event so the handler can decide to continue reading.
InetSocketAddress	remoteAddress() Returns the remote address where this channel is connected to.
ChannelFuture	shutdownOutput()
ChannelFuture	shutdownOutput(ChannelPromise future)
ChannelPromise	voidPromise() Return a special ChannelPromise which can be reused for different operations.
ChannelFuture	write(MessageList<?> msgs)
ChannelFuture	write(MessageList<?> msgs, ChannelPromise promise)
ChannelFuture	write(Object msg) Request to write a message via this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.
ChannelFuture	write(Object msg, ChannelPromise promise) Request to write a message via this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.

Methods inherited from interface io.netty.channel.Channel

closeFuture, eventLoop, id, isActive, isOpen, isRegistered, isWritable, metadata, unsafe

Methods inherited from interface io.netty.util.AttributeMap

attr

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

parent

ServerSocketChannel parent()

Description copied from interface: Channel

Returns the parent of this channel.

Specified by:

parent in interface Channel

Returns:

the parent channel. null if this channel does not have a parent channel.

config

SocketChannelConfig config()

Description copied from interface: Channel

Returns the configuration of this channel.

Specified by:

config in interface Channel

localAddress

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

Returns:

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

remoteAddress

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

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.

isInputShutdown

boolean isInputShutdown()

Returns true if and only if the remote peer shut down its output so that no more data is received from this channel. Note that the semantic of this method is different from that of Socket.shutdownInput() and Socket.isInputShutdown().

isOutputShutdown

boolean isOutputShutdown()

See Also:

Socket.isOutputShutdown()

shutdownOutput

ChannelFuture shutdownOutput()

See Also:

Socket.shutdownOutput()

shutdownOutput

ChannelFuture shutdownOutput(ChannelPromise future)

See Also:

Will notify the given {@link ChannelPromise}

bind

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.

This will result in having the ChannelOutboundHandler.bind(ChannelHandlerContext, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

connect

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.

If the connection fails because of a connection timeout, the ChannelFuture will get failed with a ConnectTimeoutException. If it fails because of connection refused a ConnectException will be used.

This will result in having the ChannelOutboundHandler.connect(ChannelHandlerContext, SocketAddress, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

connect

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.

This will result in having the ChannelOutboundHandler.connect(ChannelHandlerContext, SocketAddress, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

disconnect

ChannelFuture disconnect()

Request to discconect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.

This will result in having the ChannelOutboundHandler.disconnect(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

close

ChannelFuture close()

Request to close this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error. After it is closed it is not possible to reuse it again.

This will result in having the ChannelOutboundHandler.close(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

deregister

ChannelFuture deregister()

Request to deregister this ChannelOutboundInvoker from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.

This will result in having the ChannelOutboundHandler.deregister(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

write

ChannelFuture write(Object msg)

Request to write a message via this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.

write

ChannelFuture write(MessageList<?> msgs)

bind

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. The given ChannelPromise will be notified.

This will result in having the ChannelOutboundHandler.bind(ChannelHandlerContext, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

connect

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. The given ChannelFuture will be notified.

If the connection fails because of a connection timeout, the ChannelFuture will get failed with a ConnectTimeoutException. If it fails because of connection refused a ConnectException will be used.

This will result in having the ChannelOutboundHandler.connect(ChannelHandlerContext, SocketAddress, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

connect

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. The given ChannelPromise will be notified and also returned.

This will result in having the ChannelOutboundHandler.connect(ChannelHandlerContext, SocketAddress, SocketAddress, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

disconnect

ChannelFuture disconnect(ChannelPromise promise)

Request to discconect from the remote peer and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error. The given ChannelPromise will be notified.

This will result in having the ChannelOutboundHandler.disconnect(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

close

ChannelFuture close(ChannelPromise promise)

Request to close this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error. After it is closed it is not possible to reuse it again. The given ChannelPromise will be notified.

This will result in having the ChannelOutboundHandler.close(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

deregister

ChannelFuture deregister(ChannelPromise promise)

Request to deregister this ChannelOutboundInvoker from the previous assigned EventExecutor and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error. The given ChannelPromise will be notified.

This will result in having the ChannelOutboundHandler.deregister(ChannelHandlerContext, ChannelPromise) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

read

void read()

Request to Read data from the Channel into the first inbound buffer, triggers an ChannelInboundHandler.messageReceived(ChannelHandlerContext, MessageList) event if data was read, and triggers an channelReadSuspended event so the handler can decide to continue reading. If there's a pending read operation already, this method does nothing.

This will result in having the ChannelOutboundHandler.read(ChannelHandlerContext) method called of the next ChannelOutboundHandler contained in the ChannelPipeline of the Channel.

write

ChannelFuture write(Object msg,
                  ChannelPromise promise)

Request to write a message via this ChannelOutboundInvoker and notify the ChannelFuture once the operation completes, either because the operation was successful or because of an error.

write

ChannelFuture write(MessageList<?> msgs,
                  ChannelPromise promise)

pipeline

ChannelPipeline pipeline()

Return the assigned ChannelPipeline

alloc

io.netty.buffer.ByteBufAllocator alloc()

Return the assigned ByteBufAllocator which will be used for allocate ByteBufs.

newPromise

ChannelPromise newPromise()

Return a new ChannelPromise.

newProgressivePromise

ChannelProgressivePromise newProgressivePromise()

Return an new ChannelProgressivePromise

newSucceededFuture

ChannelFuture newSucceededFuture()

Create a new ChannelFuture which is marked as successes already. So Future.isSuccess() will return true. All FutureListener added to it will be notified directly. Also every call of blocking methods will just return without blocking.

newFailedFuture

ChannelFuture newFailedFuture(Throwable cause)

Create a new ChannelFuture which is marked as fakued already. So Future.isSuccess() will return false. All FutureListener added to it will be notified directly. Also every call of blocking methods will just return without blocking.

voidPromise

ChannelPromise voidPromise()

Return a special ChannelPromise which can be reused for different operations.

It's only supported to use it for ChannelOutboundInvoker.write(Object, ChannelPromise) and, ChannelOutboundInvoker.write(MessageList, ChannelPromise).

Be aware that the returned ChannelPromise will not support most operations and should only be used if you want to safe object allocation for every operation. You will not be able to detect if the operation was complete, only if it failed as the implementation will call ChannelPipeline.fireExceptionCaught(Throwable) in this case.

Be aware this is an expert feature and should be used with care!