Class Http2ChannelDuplexHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.netty.handler.codec.http2.Http2ChannelDuplexHandler

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelOutboundHandler

Direct Known Subclasses:

Http2MultiplexHandler

public abstract class Http2ChannelDuplexHandler
extends ChannelDuplexHandler

A ChannelDuplexHandler providing additional functionality for HTTP/2. Specifically it allows to:

• Create new outbound streams using newStream().
• Iterate over all active streams using forEachActiveStream(Http2FrameStreamVisitor).

The Http2FrameCodec is required to be part of the ChannelPipeline before this handler is added, or else an IllegalStateException will be thrown.

Nested Class Summary

Nested classes/interfaces inherited from interface ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor	Description
Http2ChannelDuplexHandler()

Method Summary

Modifier and Type	Method	Description
protected final void	forEachActiveStream(Http2FrameStreamVisitor streamVisitor)	Allows to iterate over all currently active streams.
final void	handlerAdded(ChannelHandlerContext ctx)	Do nothing by default, sub-classes may override this method.
protected void	handlerAdded0(ChannelHandlerContext ctx)
final void	handlerRemoved(ChannelHandlerContext ctx)	Do nothing by default, sub-classes may override this method.
protected void	handlerRemoved0(ChannelHandlerContext ctx)
final Http2FrameStream	newStream()	Creates a new Http2FrameStream object.

Methods inherited from class ChannelDuplexHandler

bind, close, connect, deregister, disconnect, flush, read, write

Methods inherited from class ChannelInboundHandlerAdapter

channelActive, channelInactive, channelRead, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class ChannelHandlerAdapter

ensureNotSharable, isSharable

Methods inherited from class Object

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

Constructor Details

Http2ChannelDuplexHandler

public Http2ChannelDuplexHandler()

Method Details

handlerAdded

public final 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

handlerAdded0

protected void handlerAdded0(ChannelHandlerContext ctx)
                      throws Exception

Throws:

Exception

handlerRemoved

public final 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

handlerRemoved0

protected void handlerRemoved0(ChannelHandlerContext ctx)
                        throws Exception

Throws:

Exception

newStream

public final Http2FrameStream newStream()

Creates a new Http2FrameStream object.

This method is thread-safe.

forEachActiveStream

protected final void forEachActiveStream(Http2FrameStreamVisitor streamVisitor)
                                  throws Http2Exception

Allows to iterate over all currently active streams.

This method may only be called from the eventloop thread.

Throws:

Http2Exception