HttpServerExpectContinueHandler (Netty API Reference (5.0.0.Alpha4))

java.lang.Object
- io.netty5.handler.codec.http.HttpServerExpectContinueHandler

All Implemented Interfaces:

ChannelHandler
```
public class HttpServerExpectContinueHandler
extends Object
implements ChannelHandler
```
Sends a 100 CONTINUE HttpResponse to HttpRequests which contain a 'expect: 100-continue' header. It should only be used for applications which do not install the HttpObjectAggregator.
By default it accepts all expectations.
Since HttpServerExpectContinueHandler expects HttpRequests it should be added after HttpServerCodec but before any other handlers that might send a HttpResponse.
```
  ChannelPipeline p = ...;
  ...
  p.addLast("serverCodec", new HttpServerCodec());
  p.addLast("respondExpectContinue", new HttpServerExpectContinueHandler());
  ...
  p.addLast("handler", new HttpRequestHandler());
  
```

Constructor Summary

Constructors
Constructor Description

HttpServerExpectContinueHandler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected HttpResponse`	`acceptMessage(BufferAllocator allocator, HttpRequest request)`	Produces a `HttpResponse` for `HttpRequest`s which define an expectation.
`void`	`channelRead(ChannelHandlerContext ctx, Object msg)`	Invoked when the current `Channel` has read a message from the peer.
`protected HttpResponse`	`rejectResponse(BufferAllocator allocator, HttpRequest request)`	Returns the appropriate 4XX `HttpResponse` for the given `HttpRequest`.

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

Methods inherited from interface io.netty5.channel.ChannelHandler
bind, channelActive, channelExceptionCaught, channelInactive, channelInboundEvent, channelReadComplete, channelRegistered, channelShutdown, channelUnregistered, channelWritabilityChanged, close, connect, deregister, disconnect, flush, handlerAdded, handlerRemoved, isSharable, pendingOutboundBytes, read, register, sendOutboundEvent, shutdown, write

Constructor Detail
- HttpServerExpectContinueHandler
```
public HttpServerExpectContinueHandler()
```

Method Detail

acceptMessage

protected HttpResponse acceptMessage(BufferAllocator allocator,
                                     HttpRequest request)

Produces a HttpResponse for HttpRequests which define an expectation. Returns null if the request should be rejected. See rejectResponse(BufferAllocator, HttpRequest).

rejectResponse

protected HttpResponse rejectResponse(BufferAllocator allocator,
                                      HttpRequest request)

Returns the appropriate 4XX HttpResponse for the given HttpRequest.

channelRead
```
public void channelRead(ChannelHandlerContext ctx,
                        Object msg)
                 throws Exception
```
Description copied from interface: ChannelHandler

Invoked when the current Channel has read a message from the peer.

Specified by:

channelRead in interface ChannelHandler

Throws:

Exception