Http2ChannelDuplexHandler (Netty API Reference (4.1.22.Final))

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
```
@UnstableApi
public abstract class Http2ChannelDuplexHandler
extends ChannelDuplexHandler
```
A ChannelDuplexHandler为HTTP / 2提供附加功能。具体来说，它允许：
- 使用newStream()创建新的出站流。
- 使用forEachActiveStream(Http2FrameStreamVisitor)迭代所有活动流。
在添加该处理程序之前， Http2FrameCodec需要成为ChannelPipeline的一部分，否则将抛出IllegalStateException 。

Nested Class Summary
- Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler
  ChannelHandler.Sharable

构造方法摘要

构造方法
Constructor and Description
`Http2ChannelDuplexHandler()`

方法摘要

所有方法接口方法具体的方法
Modifier and Type	Method and Description
`protected void`	`forEachActiveStream(Http2FrameStreamVisitor streamVisitor)` 允许遍历所有当前活动的流。
`void`	`handlerAdded(ChannelHandlerContext ctx)` 子类可以忽略这个方法。
`protected void`	`handlerAdded0(ChannelHandlerContext ctx)`
`void`	`handlerRemoved(ChannelHandlerContext ctx)` 子类可以忽略这个方法。
`protected void`	`handlerRemoved0(ChannelHandlerContext ctx)`
`Http2FrameStream`	`newStream()` 创建一个新的`Http2FrameStream`对象。

Methods inherited from class io.netty.channel.ChannelDuplexHandler
bind, close, connect, deregister, disconnect, flush, read, write

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter
channelActive, channelInactive, channelRead, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter
ensureNotSharable, isSharable

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

Methods inherited from interface io.netty.channel.ChannelHandler
exceptionCaught

- 构造方法详细信息
  - Http2ChannelDuplexHandler
```
public Http2ChannelDuplexHandler()
```
- 方法详细信息
  - handlerAdded
```
public final void handlerAdded(ChannelHandlerContext ctx)
                        throws java.lang.Exception
```
    从类复制的描述： ChannelHandlerAdapter
    
    子类可以忽略这个方法。
    
    Specified by:
    
    handlerAdded接口 ChannelHandler
    
    重写：
    
    handlerAdded在课堂上 ChannelHandlerAdapter
    
    异常
    
    java.lang.Exception
  - handlerAdded0
```
protected void handlerAdded0(ChannelHandlerContext ctx)
                      throws java.lang.Exception
```
    异常
    
    java.lang.Exception
  - handlerRemoved
```
public final void handlerRemoved(ChannelHandlerContext ctx)
                          throws java.lang.Exception
```
    从类复制的描述： ChannelHandlerAdapter
    
    子类可以忽略这个方法。
    
    Specified by:
    
    handlerRemoved接口 ChannelHandler
    
    重写：
    
    handlerRemoved在课堂 ChannelHandlerAdapter
    
    异常
    
    java.lang.Exception
  - handlerRemoved0
```
protected void handlerRemoved0(ChannelHandlerContext ctx)
                        throws java.lang.Exception
```
    异常
    
    java.lang.Exception
  - newStream
```
public final Http2FrameStream newStream()
```
    创建一个新的Http2FrameStream对象。
    这种方法是线程安全的 。
  - forEachActiveStream
```
protected final void forEachActiveStream(Http2FrameStreamVisitor streamVisitor)
                                  throws Http2Exception
```
    允许遍历所有当前活动的流。
    该方法只能从事件回调线程调用。
    
    异常
    
    Http2Exception

Class Http2ChannelDuplexHandler

Nested Class Summary

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

构造方法摘要

方法摘要

Methods inherited from class io.netty.channel.ChannelDuplexHandler

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

Methods inherited from class java.lang.Object

Methods inherited from interface io.netty.channel.ChannelHandler

构造方法详细信息

Http2ChannelDuplexHandler

方法详细信息

handlerAdded

handlerAdded0

handlerRemoved

handlerRemoved0

newStream

forEachActiveStream