io.netty.channel

Class CombinedChannelDuplexHandler<I extends ChannelInboundHandler,O extends ChannelOutboundHandler>

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.netty.channel.CombinedChannelDuplexHandler<I,O>

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelOutboundHandler

public class CombinedChannelDuplexHandler<I extends ChannelInboundHandler,O extends ChannelOutboundHandler>
extends ChannelDuplexHandler

Combines a ChannelInboundHandler and a ChannelOutboundHandler into one ChannelHandler.

Nested Class Summary

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

ChannelHandler.Sharable

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CombinedChannelDuplexHandler() Creates a new uninitialized instance.
	CombinedChannelDuplexHandler(I inboundHandler, O outboundHandler) Creates a new instance that combines the specified two handlers into one.

Method Summary

Methods

Modifier and Type	Method and Description
void	bind(ChannelHandlerContext ctx, SocketAddress localAddress, ChannelPromise promise) Calls ChannelOutboundInvoker.bind(SocketAddress, ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline.
void	channelActive(ChannelHandlerContext ctx) Calls ChannelHandlerContext.fireChannelActive() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelInactive(ChannelHandlerContext ctx) Calls ChannelHandlerContext.fireChannelInactive() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelRegistered(ChannelHandlerContext ctx) Calls ChannelHandlerContext.fireChannelRegistered() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelUnregistered(ChannelHandlerContext ctx) Calls ChannelHandlerContext.fireChannelUnregistered() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	close(ChannelHandlerContext ctx, ChannelPromise promise) Calls ChannelOutboundInvoker.close(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline.
void	connect(ChannelHandlerContext ctx, SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) Calls ChannelOutboundInvoker.connect(SocketAddress, SocketAddress, ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline.
void	deregister(ChannelHandlerContext ctx, ChannelPromise promise) Calls ChannelOutboundInvoker.close(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline.
void	disconnect(ChannelHandlerContext ctx, ChannelPromise promise) Calls ChannelOutboundInvoker.disconnect(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline.
void	exceptionCaught(ChannelHandlerContext ctx, Throwable cause) Calls ChannelHandlerContext.fireExceptionCaught(Throwable) to forward to the next ChannelHandler in the ChannelPipeline.
void	handlerAdded(ChannelHandlerContext ctx) Do nothing by default, sub-classes may override this method.
void	handlerRemoved(ChannelHandlerContext ctx) Do nothing by default, sub-classes may override this method.
protected I	inboundHandler()
protected void	init(I inboundHandler, O outboundHandler) Initialized this handler with the specified handlers.
void	messageReceived(ChannelHandlerContext ctx, MessageList<Object> msgs) Calls ChannelHandlerContext.fireMessageReceived(MessageList) to forward to the next ChannelInboundHandler in the ChannelPipeline.
protected O	outboundHandler()
void	read(ChannelHandlerContext ctx) Intercepts ChannelOutboundInvoker.read().
void	userEventTriggered(ChannelHandlerContext ctx, Object evt) Calls ChannelHandlerContext.fireUserEventTriggered(Object) to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	write(ChannelHandlerContext ctx, MessageList<Object> msgs, ChannelPromise promise) Called once a flush operation is made and so the outbound data should be written.

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelReadSuspended, channelWritabilityChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CombinedChannelDuplexHandler

protected CombinedChannelDuplexHandler()

Creates a new uninitialized instance. A class that extends this handler must invoke init(ChannelInboundHandler, ChannelOutboundHandler) before adding this handler into a ChannelPipeline.

CombinedChannelDuplexHandler

public CombinedChannelDuplexHandler(I inboundHandler,
                            O outboundHandler)

Creates a new instance that combines the specified two handlers into one.

Method Detail

init

protected final void init(I inboundHandler,
        O outboundHandler)

Initialized this handler with the specified handlers.

Throws:

IllegalStateException - if this handler was not constructed via the default constructor or if this handler does not implement all required handler interfaces

IllegalArgumentException - if the specified handlers cannot be combined into one due to a conflict in the type hierarchy

inboundHandler

protected final I inboundHandler()

outboundHandler

protected final O outboundHandler()

handlerAdded

public void handlerAdded(ChannelHandlerContext ctx)
                  throws Exception

Description copied from class: ChannelHandlerAdapter

Do nothing by default, sub-classes may override this method.

Specified by:

handlerAdded in interface ChannelHandler

Overrides:

handlerAdded in class ChannelHandlerAdapter

Throws:

Exception

handlerRemoved

public void handlerRemoved(ChannelHandlerContext ctx)
                    throws Exception

Description copied from class: ChannelHandlerAdapter

Do nothing by default, sub-classes may override this method.

Specified by:

handlerRemoved in interface ChannelHandler

Overrides:

handlerRemoved in class ChannelHandlerAdapter

Throws:

Exception

channelRegistered

public void channelRegistered(ChannelHandlerContext ctx)
                       throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireChannelRegistered() to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

channelRegistered in interface ChannelInboundHandler

Overrides:

channelRegistered in class ChannelInboundHandlerAdapter

Throws:

Exception

channelUnregistered

public void channelUnregistered(ChannelHandlerContext ctx)
                         throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireChannelUnregistered() to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

channelUnregistered in interface ChannelInboundHandler

Overrides:

channelUnregistered in class ChannelInboundHandlerAdapter

Throws:

Exception

channelActive

public void channelActive(ChannelHandlerContext ctx)
                   throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireChannelActive() to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

channelActive in interface ChannelInboundHandler

Overrides:

channelActive in class ChannelInboundHandlerAdapter

Throws:

Exception

channelInactive

public void channelInactive(ChannelHandlerContext ctx)
                     throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireChannelInactive() to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

channelInactive in interface ChannelInboundHandler

Overrides:

channelInactive in class ChannelInboundHandlerAdapter

Throws:

Exception

exceptionCaught

public void exceptionCaught(ChannelHandlerContext ctx,
                   Throwable cause)
                     throws Exception

Description copied from class: ChannelHandlerAdapter

Calls ChannelHandlerContext.fireExceptionCaught(Throwable) to forward to the next ChannelHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

exceptionCaught in interface ChannelHandler

Overrides:

exceptionCaught in class ChannelHandlerAdapter

Throws:

Exception

userEventTriggered

public void userEventTriggered(ChannelHandlerContext ctx,
                      Object evt)
                        throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireUserEventTriggered(Object) to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

userEventTriggered in interface ChannelInboundHandler

Overrides:

userEventTriggered in class ChannelInboundHandlerAdapter

Throws:

Exception

messageReceived

public void messageReceived(ChannelHandlerContext ctx,
                   MessageList<Object> msgs)
                     throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireMessageReceived(MessageList) to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

messageReceived in interface ChannelInboundHandler

Overrides:

messageReceived in class ChannelInboundHandlerAdapter

Throws:

Exception

bind

public void bind(ChannelHandlerContext ctx,
        SocketAddress localAddress,
        ChannelPromise promise)
          throws Exception

Description copied from class: ChannelDuplexHandler

Calls ChannelOutboundInvoker.bind(SocketAddress, ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

bind in interface ChannelOutboundHandler

Overrides:

bind in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the bind operation is made

localAddress - the SocketAddress to which it should bound

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

connect

public void connect(ChannelHandlerContext ctx,
           SocketAddress remoteAddress,
           SocketAddress localAddress,
           ChannelPromise promise)
             throws Exception

Description copied from class: ChannelDuplexHandler

Calls ChannelOutboundInvoker.connect(SocketAddress, SocketAddress, ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

connect in interface ChannelOutboundHandler

Overrides:

connect in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the connect operation is made

remoteAddress - the SocketAddress to which it should connect

localAddress - the SocketAddress which is used as source on connect

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

disconnect

public void disconnect(ChannelHandlerContext ctx,
              ChannelPromise promise)
                throws Exception

Description copied from class: ChannelDuplexHandler

Calls ChannelOutboundInvoker.disconnect(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

disconnect in interface ChannelOutboundHandler

Overrides:

disconnect in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the disconnect operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

close

public void close(ChannelHandlerContext ctx,
         ChannelPromise promise)
           throws Exception

Description copied from class: ChannelDuplexHandler

Calls ChannelOutboundInvoker.close(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

close in interface ChannelOutboundHandler

Overrides:

close in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the close operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

deregister

public void deregister(ChannelHandlerContext ctx,
              ChannelPromise promise)
                throws Exception

Description copied from class: ChannelDuplexHandler

Calls ChannelOutboundInvoker.close(ChannelPromise) to forward to the next ChannelOutboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

deregister in interface ChannelOutboundHandler

Overrides:

deregister in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the close operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

read

public void read(ChannelHandlerContext ctx)
          throws Exception

Description copied from interface: ChannelOutboundHandler

Intercepts ChannelOutboundInvoker.read().

Specified by:

read in interface ChannelOutboundHandler

Overrides:

read in class ChannelDuplexHandler

Throws:

Exception

write

public void write(ChannelHandlerContext ctx,
         MessageList<Object> msgs,
         ChannelPromise promise)
           throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a flush operation is made and so the outbound data should be written.

Specified by:

write in interface ChannelOutboundHandler

Overrides:

write in class ChannelDuplexHandler

Parameters:

ctx - the ChannelHandlerContext for which the flush operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour