io.netty.handler.codec.http2

Class Http2ServerDowngrader

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.netty.handler.codec.MessageToMessageCodec<Http2StreamFrame,HttpObject>

io.netty.handler.codec.http2.Http2ServerDowngrader

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelOutboundHandler

@UnstableApi
public class Http2ServerDowngrader
extends MessageToMessageCodec<Http2StreamFrame,HttpObject>

This is a server-side adapter so that an http2 codec can be downgraded to appear as if it's speaking http/1.1. In particular, this handler converts from Http2StreamFrame to HttpObject, and back. For simplicity, it converts to chunked encoding unless the entire stream is a single header.

Nested Class Summary

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

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
Http2ServerDowngrader()
Http2ServerDowngrader(boolean validateHeaders)

Method Summary

Modifier and Type	Method and Description
boolean	acceptInboundMessage(Object msg) Returns true if and only if the specified message can be decoded by this codec.
protected void	decode(ChannelHandlerContext ctx, Http2StreamFrame frame, List<Object> out)
protected void	encode(ChannelHandlerContext ctx, HttpObject obj, List<Object> out)

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

acceptOutboundMessage, channelRead, write

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

Constructor Detail

Http2ServerDowngrader

public Http2ServerDowngrader(boolean validateHeaders)

Http2ServerDowngrader

public Http2ServerDowngrader()

Method Detail

acceptInboundMessage

public boolean acceptInboundMessage(Object msg)
                             throws Exception

Description copied from class: MessageToMessageCodec

Returns true if and only if the specified message can be decoded by this codec.

Overrides:

acceptInboundMessage in class MessageToMessageCodec<Http2StreamFrame,HttpObject>

Parameters:

msg - the message

Throws:

Exception

decode

protected void decode(ChannelHandlerContext ctx,
                      Http2StreamFrame frame,
                      List<Object> out)
               throws Exception

Specified by:

decode in class MessageToMessageCodec<Http2StreamFrame,HttpObject>

Throws:

Exception

See Also:

MessageToMessageDecoder.decode(ChannelHandlerContext, Object, List)

encode

protected void encode(ChannelHandlerContext ctx,
                      HttpObject obj,
                      List<Object> out)
               throws Exception

Specified by:

encode in class MessageToMessageCodec<Http2StreamFrame,HttpObject>

Throws:

Exception

See Also:

MessageToMessageEncoder.encode(ChannelHandlerContext, Object, List)