java.lang.Object
- io.netty.util.DefaultAttributeMap
- - io.netty.channel.AbstractChannel
  - - io.netty.channel.nio.AbstractNioChannel
    - - io.netty.channel.nio.AbstractNioByteChannel
      - io.netty.channel.socket.nio.NioSocketChannel

All Implemented Interfaces:

Channel, ChannelOutboundInvoker, DuplexChannel, SocketChannel, AttributeMap, java.lang.Comparable<Channel>
```
public class NioSocketChannel
extends AbstractNioByteChannel
implements SocketChannel
```
SocketChannel which uses NIO selector based implementation.

Nested Class Summary
- Nested classes/interfaces inherited from class io.netty.channel.nio.AbstractNioByteChannel
  AbstractNioByteChannel.NioByteUnsafe
- Nested classes/interfaces inherited from class io.netty.channel.nio.AbstractNioChannel
  AbstractNioChannel.AbstractNioUnsafe, AbstractNioChannel.NioUnsafe
- Nested classes/interfaces inherited from class io.netty.channel.AbstractChannel
  AbstractChannel.AbstractUnsafe
- Nested classes/interfaces inherited from interface io.netty.channel.Channel
  Channel.Unsafe

Field Summary
- Fields inherited from class io.netty.channel.nio.AbstractNioChannel
  readInterestOp, readOps

Constructor Summary

Constructors
Constructor	Description
`NioSocketChannel()`	Create a new instance
`NioSocketChannel(Channel parent, java.nio.channels.SocketChannel socket)`	Create a new instance
`NioSocketChannel(java.nio.channels.SocketChannel socket)`	Create a new instance using the given `SocketChannel`.
`NioSocketChannel(java.nio.channels.spi.SelectorProvider provider)`	Create a new instance using the given `SelectorProvider`.
`NioSocketChannel(java.nio.channels.spi.SelectorProvider provider, InternetProtocolFamily family)`	Deprecated. use `NioSocketChannel(SelectorProvider, SocketProtocolFamily)`
`NioSocketChannel(java.nio.channels.spi.SelectorProvider provider, SocketProtocolFamily family)`	Create a new instance using the given `SelectorProvider` and protocol family (supported only since JDK 15).

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SocketChannelConfig`	`config()`	Returns the configuration of this channel.
`protected void`	`doBind(java.net.SocketAddress localAddress)`	Bind the `Channel` to the `SocketAddress`
`protected void`	`doClose()`	Close the `Channel`
`protected boolean`	`doConnect(java.net.SocketAddress remoteAddress, java.net.SocketAddress localAddress)`	Connect to the remote peer
`protected void`	`doDisconnect()`	Disconnect this `Channel` from its remote peer
`protected void`	`doFinishConnect()`	Finish the connect
`protected int`	`doReadBytes(ByteBuf byteBuf)`	Read bytes into the given `ByteBuf` and return the amount.
`protected void`	`doShutdownOutput()`	Called when conditions justify shutting down the output portion of the channel.
`protected void`	`doWrite(ChannelOutboundBuffer in)`	Flush the content of the given buffer to the remote peer.
`protected int`	`doWriteBytes(ByteBuf buf)`	Write bytes form the given `ByteBuf` to the underlying `Channel`.
`protected long`	`doWriteFileRegion(FileRegion region)`	Write a `FileRegion`
`boolean`	`isActive()`	Return `true` if the `Channel` is active and so connected.
`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.
`protected boolean`	`isInputShutdown0()`
`boolean`	`isOutputShutdown()`
`boolean`	`isShutdown()`	Determine if both the input and output of this channel have been shutdown.
`protected java.nio.channels.SocketChannel`	`javaChannel()`
`java.net.InetSocketAddress`	`localAddress()`	Returns the local address where this channel is bound to.
`protected java.net.SocketAddress`	`localAddress0()`	Returns the `SocketAddress` which is bound locally.
`protected AbstractNioChannel.AbstractNioUnsafe`	`newUnsafe()`	Create a new `AbstractChannel.AbstractUnsafe` instance which will be used for the life-time of the `Channel`
`ServerSocketChannel`	`parent()`	Returns the parent of this channel.
`java.net.InetSocketAddress`	`remoteAddress()`	Returns the remote address where this channel is connected to.
`protected java.net.SocketAddress`	`remoteAddress0()`	Return the `SocketAddress` which the `Channel` is connected to.
`ChannelFuture`	`shutdown()`	Will shutdown the input and output sides of this channel.
`ChannelFuture`	`shutdown(ChannelPromise promise)`	Will shutdown the input and output sides of this channel.
`ChannelFuture`	`shutdownInput()`	Shutdown the input side of the channel.
`ChannelFuture`	`shutdownInput(ChannelPromise promise)`	Will shutdown the input and notify `ChannelPromise`.
`ChannelFuture`	`shutdownOutput()`
`ChannelFuture`	`shutdownOutput(ChannelPromise promise)`	Will shutdown the output and notify `ChannelPromise`.

Methods inherited from class io.netty.channel.nio.AbstractNioByteChannel
clearOpWrite, doWrite0, filterOutboundMessage, incompleteWrite, metadata, setOpWrite

Methods inherited from class io.netty.channel.nio.AbstractNioChannel
addAndSubmit, clearReadPending, doBeginRead, doDeregister, doRegister, isCompatible, isOpen, isReadPending, newDirectBuffer, newDirectBuffer, registration, removeAndSubmit, selectionKey, setReadPending, unsafe

Methods inherited from class io.netty.channel.AbstractChannel
closeFuture, compareTo, doRegister, equals, eventLoop, hashCode, id, invalidateLocalAddress, invalidateRemoteAddress, isRegistered, maxMessagesPerWrite, newChannelPipeline, newId, pipeline, toString, validateFileRegion, voidPromise

Methods inherited from class io.netty.util.DefaultAttributeMap
attr, hasAttr

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.netty.util.AttributeMap
attr, hasAttr

Methods inherited from interface io.netty.channel.Channel
alloc, bind, bind, bytesBeforeUnwritable, bytesBeforeWritable, close, close, closeFuture, connect, connect, connect, connect, deregister, deregister, disconnect, disconnect, eventLoop, flush, getOption, id, isOpen, isRegistered, isWritable, metadata, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, pipeline, read, setOption, unsafe, voidPromise, write, write, writeAndFlush, writeAndFlush

Methods inherited from interface java.lang.Comparable
compareTo

- Constructor Detail
  - NioSocketChannel
```
public NioSocketChannel()
```
    Create a new instance
  - NioSocketChannel
```
public NioSocketChannel(java.nio.channels.spi.SelectorProvider provider)
```
    Create a new instance using the given SelectorProvider.
  - NioSocketChannel
```
@Deprecated
public NioSocketChannel(java.nio.channels.spi.SelectorProvider provider,
                        InternetProtocolFamily family)
```
    Deprecated.
    use NioSocketChannel(SelectorProvider, SocketProtocolFamily)
    
    Create a new instance using the given SelectorProvider and protocol family (supported only since JDK 15).
  - NioSocketChannel
```
public NioSocketChannel(java.nio.channels.spi.SelectorProvider provider,
                        SocketProtocolFamily family)
```
    Create a new instance using the given SelectorProvider and protocol family (supported only since JDK 15).
  - NioSocketChannel
```
public NioSocketChannel(java.nio.channels.SocketChannel socket)
```
    Create a new instance using the given SocketChannel.
  - NioSocketChannel
```
public NioSocketChannel(Channel parent,
                        java.nio.channels.SocketChannel socket)
```
    Create a new instance
    
    Parameters:
    
    parent - the Channel which created this instance or null if it was created by the user
    
    socket - the SocketChannel which will be used
- Method Detail
  - parent
```
public ServerSocketChannel parent()
```
    Description copied from interface: Channel
    
    Returns the parent of this channel.
    
    Specified by:
    
    parent in interface Channel
    
    Specified by:
    
    parent in interface SocketChannel
    
    Overrides:
    
    parent in class AbstractChannel
    
    Returns:
    
    the parent channel. null if this channel does not have a parent channel.
  - config
```
public SocketChannelConfig config()
```
    Description copied from interface: Channel
    
    Returns the configuration of this channel.
    
    Specified by:
    
    config in interface Channel
    
    Specified by:
    
    config in interface SocketChannel
  - javaChannel
```
protected java.nio.channels.SocketChannel javaChannel()
```
    Overrides:
    
    javaChannel in class AbstractNioChannel
  - 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
  - isOutputShutdown
```
public boolean isOutputShutdown()
```
    Specified by:
    
    isOutputShutdown in interface DuplexChannel
    
    See Also:
    
    Socket.isOutputShutdown()
  - isInputShutdown
```
public boolean isInputShutdown()
```
    Description copied from interface: DuplexChannel
    
    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().
    
    Specified by:
    
    isInputShutdown in interface DuplexChannel
  - isShutdown
```
public boolean isShutdown()
```
    Description copied from interface: DuplexChannel
    
    Determine if both the input and output of this channel have been shutdown.
    
    Specified by:
    
    isShutdown in interface DuplexChannel
  - localAddress
```
public java.net.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 SocketChannel
    
    Overrides:
    
    localAddress in class AbstractChannel
    
    Returns:
    
    the local address of this channel. null if this channel is not bound.
  - remoteAddress
```
public java.net.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 SocketChannel
    
    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.
  - doShutdownOutput
```
protected final void doShutdownOutput()
                               throws java.lang.Exception
```
    Description copied from class: AbstractChannel
    
    Called when conditions justify shutting down the output portion of the channel. This may happen if a write operation throws an exception.
    
    Overrides:
    
    doShutdownOutput in class AbstractChannel
    
    Throws:
    
    java.lang.Exception
  - shutdownOutput
```
public ChannelFuture shutdownOutput()
```
    Specified by:
    
    shutdownOutput in interface DuplexChannel
    
    See Also:
    
    Socket.shutdownOutput()
  - shutdownOutput
```
public ChannelFuture shutdownOutput(ChannelPromise promise)
```
    Description copied from interface: DuplexChannel
    
    Will shutdown the output and notify ChannelPromise.
    
    Specified by:
    
    shutdownOutput in interface DuplexChannel
    
    See Also:
    
    Socket.shutdownOutput()
  - shutdownInput
```
public ChannelFuture shutdownInput()
```
    Description copied from class: AbstractNioByteChannel
    
    Shutdown the input side of the channel.
    
    Specified by:
    
    shutdownInput in interface DuplexChannel
    
    Specified by:
    
    shutdownInput in class AbstractNioByteChannel
    
    See Also:
    
    Socket.shutdownInput()
  - isInputShutdown0
```
protected boolean isInputShutdown0()
```
    Overrides:
    
    isInputShutdown0 in class AbstractNioByteChannel
  - shutdownInput
```
public ChannelFuture shutdownInput(ChannelPromise promise)
```
    Description copied from interface: DuplexChannel
    
    Will shutdown the input and notify ChannelPromise.
    
    Specified by:
    
    shutdownInput in interface DuplexChannel
    
    See Also:
    
    Socket.shutdownInput()
  - shutdown
```
public ChannelFuture shutdown()
```
    Description copied from interface: DuplexChannel
    
    Will shutdown the input and output sides of this channel.
    
    Specified by:
    
    shutdown in interface DuplexChannel
    
    Returns:
    
    will be completed when both shutdown operations complete.
  - shutdown
```
public ChannelFuture shutdown(ChannelPromise promise)
```
    Description copied from interface: DuplexChannel
    
    Will shutdown the input and output sides of this channel.
    
    Specified by:
    
    shutdown in interface DuplexChannel
    
    Parameters:
    
    promise - will be completed when both shutdown operations complete.
    
    Returns:
    
    will be completed when both shutdown operations complete.
  - localAddress0
```
protected java.net.SocketAddress localAddress0()
```
    Description copied from class: AbstractChannel
    
    Returns the SocketAddress which is bound locally.
    
    Specified by:
    
    localAddress0 in class AbstractChannel
  - remoteAddress0
```
protected java.net.SocketAddress remoteAddress0()
```
    Description copied from class: AbstractChannel
    
    Return the SocketAddress which the Channel is connected to.
    
    Specified by:
    
    remoteAddress0 in class AbstractChannel
  - doBind
```
protected void doBind(java.net.SocketAddress localAddress)
               throws java.lang.Exception
```
    Description copied from class: AbstractChannel
    
    Bind the Channel to the SocketAddress
    
    Specified by:
    
    doBind in class AbstractChannel
    
    Throws:
    
    java.lang.Exception
  - doConnect
```
protected boolean doConnect(java.net.SocketAddress remoteAddress,
                            java.net.SocketAddress localAddress)
                     throws java.lang.Exception
```
    Description copied from class: AbstractNioChannel
    
    Connect to the remote peer
    
    Specified by:
    
    doConnect in class AbstractNioChannel
    
    Throws:
    
    java.lang.Exception
  - doFinishConnect
```
protected void doFinishConnect()
                        throws java.lang.Exception
```
    Description copied from class: AbstractNioChannel
    
    Finish the connect
    
    Specified by:
    
    doFinishConnect in class AbstractNioChannel
    
    Throws:
    
    java.lang.Exception
  - doDisconnect
```
protected void doDisconnect()
                     throws java.lang.Exception
```
    Description copied from class: AbstractChannel
    
    Disconnect this Channel from its remote peer
    
    Specified by:
    
    doDisconnect in class AbstractChannel
    
    Throws:
    
    java.lang.Exception
  - doClose
```
protected void doClose()
                throws java.lang.Exception
```
    Description copied from class: AbstractChannel
    
    Close the Channel
    
    Overrides:
    
    doClose in class AbstractNioChannel
    
    Throws:
    
    java.lang.Exception
  - doReadBytes
```
protected int doReadBytes(ByteBuf byteBuf)
                   throws java.lang.Exception
```
    Description copied from class: AbstractNioByteChannel
    
    Read bytes into the given ByteBuf and return the amount.
    
    Specified by:
    
    doReadBytes in class AbstractNioByteChannel
    
    Throws:
    
    java.lang.Exception
  - doWriteBytes
```
protected int doWriteBytes(ByteBuf buf)
                    throws java.lang.Exception
```
    Description copied from class: AbstractNioByteChannel
    
    Write bytes form the given ByteBuf to the underlying Channel.
    
    Specified by:
    
    doWriteBytes in class AbstractNioByteChannel
    
    Parameters:
    
    buf - the ByteBuf from which the bytes should be written
    
    Returns:
    
    amount the amount of written bytes
    
    Throws:
    
    java.lang.Exception
  - doWriteFileRegion
```
protected long doWriteFileRegion(FileRegion region)
                          throws java.lang.Exception
```
    Description copied from class: AbstractNioByteChannel
    
    Write a FileRegion
    
    Specified by:
    
    doWriteFileRegion in class AbstractNioByteChannel
    
    Parameters:
    
    region - the FileRegion from which the bytes should be written
    
    Returns:
    
    amount the amount of written bytes
    
    Throws:
    
    java.lang.Exception
  - doWrite
```
protected void doWrite(ChannelOutboundBuffer in)
                throws java.lang.Exception
```
    Description copied from class: AbstractChannel
    
    Flush the content of the given buffer to the remote peer.
    
    Overrides:
    
    doWrite in class AbstractNioByteChannel
    
    Throws:
    
    java.lang.Exception
  - newUnsafe
```
protected AbstractNioChannel.AbstractNioUnsafe newUnsafe()
```
    Description copied from class: AbstractChannel
    
    Create a new AbstractChannel.AbstractUnsafe instance which will be used for the life-time of the Channel
    
    Overrides:
    
    newUnsafe in class AbstractNioByteChannel

Class NioSocketChannel

Nested Class Summary

Nested classes/interfaces inherited from class io.netty.channel.nio.AbstractNioByteChannel

Nested classes/interfaces inherited from class io.netty.channel.nio.AbstractNioChannel

Nested classes/interfaces inherited from class io.netty.channel.AbstractChannel

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

Field Summary

Fields inherited from class io.netty.channel.nio.AbstractNioChannel

Constructor Summary

Method Summary

Methods inherited from class io.netty.channel.nio.AbstractNioByteChannel

Methods inherited from class io.netty.channel.nio.AbstractNioChannel

Methods inherited from class io.netty.channel.AbstractChannel

Methods inherited from class io.netty.util.DefaultAttributeMap

Methods inherited from class java.lang.Object

Methods inherited from interface io.netty.util.AttributeMap

Methods inherited from interface io.netty.channel.Channel

Methods inherited from interface java.lang.Comparable

Constructor Detail

NioSocketChannel

NioSocketChannel

NioSocketChannel

NioSocketChannel

NioSocketChannel

NioSocketChannel

Method Detail

parent

config

javaChannel

isActive

isOutputShutdown

isInputShutdown

isShutdown

localAddress

remoteAddress

doShutdownOutput

shutdownOutput

shutdownOutput

shutdownInput

isInputShutdown0

shutdownInput

shutdown

shutdown

localAddress0

remoteAddress0

doBind

doConnect

doFinishConnect

doDisconnect

doClose

doReadBytes

doWriteBytes

doWriteFileRegion

doWrite

newUnsafe