io.netty.handler.codec.http

Class HttpClientUpgradeHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<I>

io.netty.handler.codec.MessageAggregator<HttpObject,HttpMessage,HttpContent,FullHttpMessage>

io.netty.handler.codec.http.HttpObjectAggregator

io.netty.handler.codec.http.HttpClientUpgradeHandler

All Implemented Interfaces:

io.netty.channel.ChannelHandler

public class HttpClientUpgradeHandler
extends HttpObjectAggregator

Client-side handler for handling an HTTP upgrade handshake to another protocol. When the first HTTP request is sent, this handler will add all appropriate headers to perform an upgrade to the new protocol. If the upgrade fails (i.e. response is not 101 Switching Protocols), this handler simply removes itself from the pipeline. If the upgrade is successful, upgrades the pipeline to the new protocol.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	HttpClientUpgradeHandler.SourceCodec The source codec that is used in the pipeline initially.
static interface	HttpClientUpgradeHandler.UpgradeCodec A codec that the source can be upgraded to.
static class	HttpClientUpgradeHandler.UpgradeEvent User events that are fired to notify about upgrade status.

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

io.netty.channel.ChannelHandler.Sharable, io.netty.channel.ChannelHandler.Skip

Constructor Summary

Constructors

Constructor and Description
HttpClientUpgradeHandler(HttpClientUpgradeHandler.SourceCodec sourceCodec, HttpClientUpgradeHandler.UpgradeCodec upgradeCodec, int maxContentLength) Constructs the client upgrade handler.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, HttpObject msg, List<Object> out)
void	write(io.netty.channel.ChannelHandlerContext ctx, Object msg, io.netty.channel.ChannelPromise promise)

Methods inherited from class io.netty.handler.codec.http.HttpObjectAggregator

aggregate, beginAggregation, contentLength, finishAggregation, handleOversizedMessage, hasContentLength, isAggregated, isContentMessage, isLastContentMessage, isStartMessage, newContinueResponse

Methods inherited from class io.netty.handler.codec.MessageAggregator

acceptInboundMessage, channelInactive, ctx, handlerAdded, handlerRemoved, isHandlingOversizedMessage, maxContentLength, maxCumulationBufferComponents, setMaxCumulationBufferComponents

Methods inherited from class io.netty.handler.codec.MessageToMessageDecoder

channelRead

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

bind, channelActive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, close, connect, deregister, disconnect, exceptionCaught, flush, isSharable, read, userEventTriggered

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpClientUpgradeHandler

public HttpClientUpgradeHandler(HttpClientUpgradeHandler.SourceCodec sourceCodec,
                        HttpClientUpgradeHandler.UpgradeCodec upgradeCodec,
                        int maxContentLength)

Constructs the client upgrade handler.

Parameters:

sourceCodec - the codec that is being used initially.

upgradeCodec - the codec that the client would like to upgrade to.

maxContentLength - the maximum length of the aggregated content.

Method Detail

write

public void write(io.netty.channel.ChannelHandlerContext ctx,
         Object msg,
         io.netty.channel.ChannelPromise promise)
           throws Exception

Specified by:

write in interface io.netty.channel.ChannelHandler

Overrides:

write in class io.netty.channel.ChannelHandlerAdapter

Throws:

Exception

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
          HttpObject msg,
          List<Object> out)
               throws Exception

Overrides:

decode in class io.netty.handler.codec.MessageAggregator<HttpObject,HttpMessage,HttpContent,FullHttpMessage>

Throws:

Exception