io.netty.handler.codec.http2

类 Http2DataChunkedInput

java.lang.Object

io.netty.handler.codec.http2.Http2DataChunkedInput

所有已实现的接口:

ChunkedInput<Http2DataFrame>

public final class Http2DataChunkedInput
extends java.lang.Object
implements ChunkedInput<Http2DataFrame>

A ChunkedInput that fetches data chunk by chunk for use with HTTP/2 Data Frames.

Each chunk from the input data will be wrapped within a Http2DataFrame. At the end of the input data, Http2DataFrame.isEndStream() will be set to true and will be written.

     public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
         if (msg instanceof Http2HeadersFrame) {
             Http2HeadersFrame http2HeadersFrame = (Http2HeadersFrame) msg;

             Http2HeadersFrame response = new DefaultHttp2HeadersFrame(new DefaultHttp2Headers().status("200"));
             response.stream(http2HeadersFrame.stream());
             ctx.write(response);

             ChannelFuture sendFileFuture = ctx.writeAndFlush(new Http2DataChunkedInput(
                     new ChunkedFile(new File(("/home/meow/cats.mp4"))), http2HeadersFrame.stream()));
         }
     }
 

构造器概要

构造器

构造器和说明
Http2DataChunkedInput(ChunkedInput<ByteBuf> input, Http2FrameStream stream) Creates a new instance using the specified input.

方法概要

限定符和类型	方法和说明
void	close() Releases the resources associated with the input.
boolean	isEndOfInput() Return true if and only if there is no data left in the stream and the stream has reached at its end.
long	length() Returns the length of the input.
long	progress() Returns current transfer progress.
Http2DataFrame	readChunk(ByteBufAllocator allocator) Fetches a chunked data from the stream.
Http2DataFrame	readChunk(ChannelHandlerContext ctx) 已过时。

从类继承的方法 java.lang.Object

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

构造器详细资料

Http2DataChunkedInput

public Http2DataChunkedInput(ChunkedInput<ByteBuf> input,
                             Http2FrameStream stream)

Creates a new instance using the specified input.

参数:

input - ChunkedInput containing data to write

stream - Http2FrameStream holding stream info

方法详细资料

isEndOfInput

public boolean isEndOfInput()
                     throws java.lang.Exception

从接口复制的说明: ChunkedInput

Return true if and only if there is no data left in the stream and the stream has reached at its end.

指定者:

isEndOfInput 在接口中 ChunkedInput<Http2DataFrame>

抛出:

java.lang.Exception

close

public void close()
           throws java.lang.Exception

从接口复制的说明: ChunkedInput

Releases the resources associated with the input.

指定者:

close 在接口中 ChunkedInput<Http2DataFrame>

抛出:

java.lang.Exception

readChunk

@Deprecated
public Http2DataFrame readChunk(ChannelHandlerContext ctx)
                                      throws java.lang.Exception

已过时。

指定者:

readChunk 在接口中 ChunkedInput<Http2DataFrame>

参数:

ctx - The context which provides a ByteBufAllocator if buffer allocation is necessary.

返回:

the fetched chunk. null if there is no data left in the stream. Please note that null does not necessarily mean that the stream has reached at its end. In a slow stream, the next chunk might be unavailable just momentarily.

抛出:

java.lang.Exception

readChunk

public Http2DataFrame readChunk(ByteBufAllocator allocator)
                         throws java.lang.Exception

从接口复制的说明: ChunkedInput

Fetches a chunked data from the stream. Once this method returns the last chunk and thus the stream has reached at its end, any subsequent ChunkedInput.isEndOfInput() call must return true.

指定者:

readChunk 在接口中 ChunkedInput<Http2DataFrame>

参数:

allocator - ByteBufAllocator if buffer allocation is necessary.

返回:

the fetched chunk. null if there is no data left in the stream. Please note that null does not necessarily mean that the stream has reached at its end. In a slow stream, the next chunk might be unavailable just momentarily.

抛出:

java.lang.Exception

length

public long length()

从接口复制的说明: ChunkedInput

Returns the length of the input.

指定者:

length 在接口中 ChunkedInput<Http2DataFrame>

返回:

the length of the input if the length of the input is known. a negative value if the length of the input is unknown.

progress

public long progress()

从接口复制的说明: ChunkedInput

Returns current transfer progress.

指定者:

progress 在接口中 ChunkedInput<Http2DataFrame>