WebSocketClientExtensionHandler (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.http.websocketx.extensions.WebSocketClientExtensionHandler

All Implemented Interfaces:

ChannelHandler ， ChannelInboundHandler ， ChannelOutboundHandler

已知直接子类：

WebSocketClientCompressionHandler
```
public class WebSocketClientExtensionHandler
extends ChannelDuplexHandler
```
此处理程序协商并初始化WebSocket扩展。该实现按照定义的顺序与服务器协商扩展，确保成功协商的扩展在它们之间保持一致，并使用扩展解码器和编码器初始化通道管道。在io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketClientCompressionHandler找到压缩扩展的基本实现。

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
`WebSocketClientExtensionHandler(WebSocketClientExtensionHandshaker... extensionHandshakers)` 构造函数

方法摘要

所有方法接口方法具体的方法
Modifier and Type	Method and Description
`void`	`channelRead(ChannelHandlerContext ctx, java.lang.Object msg)` 致电`ChannelHandlerContext.fireChannelRead(Object)`转发到`ChannelPipeline`中的下一个`ChannelInboundHandler` 。
`void`	`write(ChannelHandlerContext ctx, java.lang.Object msg, ChannelPromise promise)` 致电`ChannelOutboundInvoker.write(Object, ChannelPromise)`转发到`ChannelPipeline`中的下一个`ChannelOutboundHandler` 。

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

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

Methods inherited from class io.netty.channel.ChannelHandlerAdapter
ensureNotSharable, handlerAdded, handlerRemoved, 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, handlerAdded, handlerRemoved

- 构造方法详细信息
  - WebSocketClientExtensionHandler
```
public WebSocketClientExtensionHandler(WebSocketClientExtensionHandshaker... extensionHandshakers)
```
    构造函数
    
    参数
    
    extensionHandshakers - 按优先级顺序的扩展握手。握手可以在回退配置中重复多次。
- 方法详细信息
  - write
```
public void write(ChannelHandlerContext ctx,
                  java.lang.Object msg,
                  ChannelPromise promise)
           throws java.lang.Exception
```
    从类复制的描述： ChannelDuplexHandler
    
    致电ChannelOutboundInvoker.write(Object, ChannelPromise)转发到ChannelPipeline中的下一个ChannelOutboundHandler 。子类可以重写此方法来更改行为。
    
    Specified by:
    
    write在界面 ChannelOutboundHandler
    
    重写：
    
    write在课堂上 ChannelDuplexHandler
    
    参数
    
    ctx - 为其写入操作的ChannelHandlerContext
    
    msg - 写信息
    
    promise - ChannelPromise通知操作完成
    
    异常
    
    java.lang.Exception - 如果发生错误则抛出
  - channelRead
```
public void channelRead(ChannelHandlerContext ctx,
                        java.lang.Object msg)
                 throws java.lang.Exception
```
    从类复制的描述： ChannelInboundHandlerAdapter
    
    致电ChannelHandlerContext.fireChannelRead(Object)转发到ChannelPipeline中的下一个ChannelInboundHandler 。子类可以重写此方法来更改行为。
    
    Specified by:
    
    channelRead在界面 ChannelInboundHandler
    
    重写：
    
    channelRead在课程 ChannelInboundHandlerAdapter
    
    异常
    
    java.lang.Exception

Class WebSocketClientExtensionHandler

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

WebSocketClientExtensionHandler

方法详细信息

write

channelRead