io.netty.handler.codec.spdy

Class SpdyFrameCodec

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.spdy.SpdyFrameCodec

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelOutboundHandler, SpdyFrameDecoderDelegate

public class SpdyFrameCodec
extends ByteToMessageDecoder
implements SpdyFrameDecoderDelegate, ChannelOutboundHandler

A ChannelHandler that encodes and decodes SPDY Frames.

Nested Class Summary

Nested classes/interfaces inherited from class io.netty.handler.codec.ByteToMessageDecoder

ByteToMessageDecoder.Cumulator

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

ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
protected static SpdyProtocolException	INVALID_FRAME
protected SpdyFrameDecoder	spdyFrameDecoder
protected SpdyFrameEncoder	spdyFrameEncoder

Fields inherited from class io.netty.handler.codec.ByteToMessageDecoder

COMPOSITE_CUMULATOR, MERGE_CUMULATOR

Constructor Summary

Constructors

Modifier	Constructor and Description
	SpdyFrameCodec(SpdyVersion version) Creates a new instance with the specified version, validateHeaders (true), and the default decoder and encoder options (maxChunkSize (8192), maxHeaderSize (16384), compressionLevel (6), windowBits (15), and memLevel (8)).
	SpdyFrameCodec(SpdyVersion version, boolean validateHeaders) Creates a new instance with the specified version, validateHeaders, and the default decoder and encoder options (maxChunkSize (8192), maxHeaderSize (16384), compressionLevel (6), windowBits (15), and memLevel (8)).
	SpdyFrameCodec(SpdyVersion version, int maxChunkSize, int maxHeaderSize, int compressionLevel, int windowBits, int memLevel) Creates a new instance with the specified version, validateHeaders (true), decoder and encoder options.
	SpdyFrameCodec(SpdyVersion version, int maxChunkSize, int maxHeaderSize, int compressionLevel, int windowBits, int memLevel, boolean validateHeaders) Creates a new instance with the specified version, validateHeaders, decoder and encoder options.
	SpdyFrameCodec(SpdyVersion version, int maxChunkSize, int maxHeaderSize, int compressionLevel, int windowBits, int memLevel, boolean validateHeaders, boolean supportsUnknownFrames) Creates a new instance with the specified version, validateHeaders, decoder and encoder options.
protected	SpdyFrameCodec(SpdyVersion version, int maxChunkSize, SpdyHeaderBlockDecoder spdyHeaderBlockDecoder, SpdyHeaderBlockEncoder spdyHeaderBlockEncoder, boolean validateHeaders)
protected	SpdyFrameCodec(SpdyVersion version, int maxChunkSize, SpdyHeaderBlockDecoder spdyHeaderBlockDecoder, SpdyHeaderBlockEncoder spdyHeaderBlockEncoder, boolean validateHeaders, boolean supportsUnknownFrames)

Method Summary

Modifier and Type	Method and Description
void	bind(ChannelHandlerContext ctx, SocketAddress localAddress, ChannelPromise promise) Called once a bind operation is made.
void	channelReadComplete(ChannelHandlerContext ctx) Calls ChannelHandlerContext.fireChannelReadComplete() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	close(ChannelHandlerContext ctx, ChannelPromise promise) Called once a close operation is made.
void	connect(ChannelHandlerContext ctx, SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) Called once a connect operation is made.
protected SpdyFrameDecoder	createDecoder(SpdyVersion version, SpdyFrameDecoderDelegate delegate, int maxChunkSize)
protected SpdyFrameEncoder	createEncoder(SpdyVersion version)
protected void	decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) Decode the from one ByteBuf to an other.
void	deregister(ChannelHandlerContext ctx, ChannelPromise promise) Called once a deregister operation is made from the current registered EventLoop.
void	disconnect(ChannelHandlerContext ctx, ChannelPromise promise) Called once a disconnect operation is made.
void	flush(ChannelHandlerContext ctx) Called once a flush operation is made.
void	handlerAdded(ChannelHandlerContext ctx) Do nothing by default, sub-classes may override this method.
protected boolean	isValidUnknownFrameHeader(int streamId, int type, byte flags, int length) Check whether the unknown frame is valid, if not, the frame will be discarded, otherwise, the frame will be passed to SpdyFrameDecoder.decodeUnknownFrame(int, byte, int, ByteBuf).
protected SpdyFrame	newSpdyUnknownFrame(int frameType, byte flags, ByteBuf payload) Create a SpdyUnknownFrame.
void	read(ChannelHandlerContext ctx) Intercepts ChannelHandlerContext.read().
void	readDataFrame(int streamId, boolean last, ByteBuf data) Called when a DATA frame is received.
void	readFrameError(String message) Called when an unrecoverable session error has occurred.
void	readGoAwayFrame(int lastGoodStreamId, int statusCode) Called when a GOAWAY frame is received.
void	readHeaderBlock(ByteBuf headerBlock) Called when the header block within a SYN_STREAM, SYN_REPLY, or HEADERS frame is received.
void	readHeaderBlockEnd() Called when an entire header block has been received.
void	readHeadersFrame(int streamId, boolean last) Called when a HEADERS frame is received.
void	readPingFrame(int id) Called when a PING frame is received.
void	readRstStreamFrame(int streamId, int statusCode) Called when a RST_STREAM frame is received.
void	readSetting(int id, int value, boolean persistValue, boolean persisted) Called when an individual setting within a SETTINGS frame is received.
void	readSettingsEnd() Called when the entire SETTINGS frame has been received.
void	readSettingsFrame(boolean clearPersisted) Called when a SETTINGS frame is received.
void	readSynReplyFrame(int streamId, boolean last) Called when a SYN_REPLY frame is received.
void	readSynStreamFrame(int streamId, int associatedToStreamId, byte priority, boolean last, boolean unidirectional) Called when a SYN_STREAM frame is received.
void	readWindowUpdateFrame(int streamId, int deltaWindowSize) Called when a WINDOW_UPDATE frame is received.
void	write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) Called once a write operation is made.

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

actualReadableBytes, callDecode, channelInactive, channelRead, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, 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, handlerRemoved

Field Detail

INVALID_FRAME

protected static final SpdyProtocolException INVALID_FRAME

spdyFrameDecoder

protected final SpdyFrameDecoder spdyFrameDecoder

spdyFrameEncoder

protected final SpdyFrameEncoder spdyFrameEncoder

Constructor Detail

SpdyFrameCodec

public SpdyFrameCodec(SpdyVersion version)

Creates a new instance with the specified version, validateHeaders (true), and the default decoder and encoder options (maxChunkSize (8192), maxHeaderSize (16384), compressionLevel (6), windowBits (15), and memLevel (8)).

SpdyFrameCodec

public SpdyFrameCodec(SpdyVersion version,
                      boolean validateHeaders)

Creates a new instance with the specified version, validateHeaders, and the default decoder and encoder options (maxChunkSize (8192), maxHeaderSize (16384), compressionLevel (6), windowBits (15), and memLevel (8)).

SpdyFrameCodec

public SpdyFrameCodec(SpdyVersion version,
                      int maxChunkSize,
                      int maxHeaderSize,
                      int compressionLevel,
                      int windowBits,
                      int memLevel)

Creates a new instance with the specified version, validateHeaders (true), decoder and encoder options.

SpdyFrameCodec

public SpdyFrameCodec(SpdyVersion version,
                      int maxChunkSize,
                      int maxHeaderSize,
                      int compressionLevel,
                      int windowBits,
                      int memLevel,
                      boolean validateHeaders)

Creates a new instance with the specified version, validateHeaders, decoder and encoder options.

SpdyFrameCodec

public SpdyFrameCodec(SpdyVersion version,
                      int maxChunkSize,
                      int maxHeaderSize,
                      int compressionLevel,
                      int windowBits,
                      int memLevel,
                      boolean validateHeaders,
                      boolean supportsUnknownFrames)

Creates a new instance with the specified version, validateHeaders, decoder and encoder options.

SpdyFrameCodec

protected SpdyFrameCodec(SpdyVersion version,
                         int maxChunkSize,
                         SpdyHeaderBlockDecoder spdyHeaderBlockDecoder,
                         SpdyHeaderBlockEncoder spdyHeaderBlockEncoder,
                         boolean validateHeaders)

SpdyFrameCodec

protected SpdyFrameCodec(SpdyVersion version,
                         int maxChunkSize,
                         SpdyHeaderBlockDecoder spdyHeaderBlockDecoder,
                         SpdyHeaderBlockEncoder spdyHeaderBlockEncoder,
                         boolean validateHeaders,
                         boolean supportsUnknownFrames)

Method Detail

createDecoder

protected SpdyFrameDecoder createDecoder(SpdyVersion version,
                                         SpdyFrameDecoderDelegate delegate,
                                         int maxChunkSize)

createEncoder

protected SpdyFrameEncoder createEncoder(SpdyVersion version)

handlerAdded

public void handlerAdded(ChannelHandlerContext ctx)
                  throws Exception

Description copied from class: ChannelHandlerAdapter

Do nothing by default, sub-classes may override this method.

Specified by:

handlerAdded in interface ChannelHandler

Overrides:

handlerAdded in class ChannelHandlerAdapter

Throws:

Exception

decode

protected void decode(ChannelHandlerContext ctx,
                      ByteBuf in,
                      List<Object> out)
               throws Exception

Description copied from class: ByteToMessageDecoder

Decode the from one ByteBuf to an other. This method will be called till either the input ByteBuf has nothing to read when return from this method or till nothing was read from the input ByteBuf.

Specified by:

decode in class ByteToMessageDecoder

Parameters:

ctx - the ChannelHandlerContext which this ByteToMessageDecoder belongs to

in - the ByteBuf from which to read data

out - the List to which decoded messages should be added

Throws:

Exception - is thrown if an error occurs

channelReadComplete

public void channelReadComplete(ChannelHandlerContext ctx)
                         throws Exception

Description copied from class: ChannelInboundHandlerAdapter

Calls ChannelHandlerContext.fireChannelReadComplete() to forward to the next ChannelInboundHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

channelReadComplete in interface ChannelInboundHandler

Overrides:

channelReadComplete in class ByteToMessageDecoder

Throws:

Exception

bind

public void bind(ChannelHandlerContext ctx,
                 SocketAddress localAddress,
                 ChannelPromise promise)
          throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a bind operation is made.

Specified by:

bind in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the bind operation is made

localAddress - the SocketAddress to which it should bound

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

connect

public void connect(ChannelHandlerContext ctx,
                    SocketAddress remoteAddress,
                    SocketAddress localAddress,
                    ChannelPromise promise)
             throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a connect operation is made.

Specified by:

connect in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the connect operation is made

remoteAddress - the SocketAddress to which it should connect

localAddress - the SocketAddress which is used as source on connect

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

disconnect

public void disconnect(ChannelHandlerContext ctx,
                       ChannelPromise promise)
                throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a disconnect operation is made.

Specified by:

disconnect in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the disconnect operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

close

public void close(ChannelHandlerContext ctx,
                  ChannelPromise promise)
           throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a close operation is made.

Specified by:

close in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the close operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

deregister

public void deregister(ChannelHandlerContext ctx,
                       ChannelPromise promise)
                throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a deregister operation is made from the current registered EventLoop.

Specified by:

deregister in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the close operation is made

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

read

public void read(ChannelHandlerContext ctx)
          throws Exception

Description copied from interface: ChannelOutboundHandler

Intercepts ChannelHandlerContext.read().

Specified by:

read in interface ChannelOutboundHandler

Throws:

Exception

flush

public void flush(ChannelHandlerContext ctx)
           throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a flush operation is made. The flush operation will try to flush out all previous written messages that are pending.

Specified by:

flush in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the flush operation is made

Throws:

Exception - thrown if an error occurs

write

public void write(ChannelHandlerContext ctx,
                  Object msg,
                  ChannelPromise promise)
           throws Exception

Description copied from interface: ChannelOutboundHandler

Called once a write operation is made. The write operation will write the messages through the ChannelPipeline. Those are then ready to be flushed to the actual Channel once Channel.flush() is called

Specified by:

write in interface ChannelOutboundHandler

Parameters:

ctx - the ChannelHandlerContext for which the write operation is made

msg - the message to write

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error occurs

readDataFrame

public void readDataFrame(int streamId,
                          boolean last,
                          ByteBuf data)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a DATA frame is received.

Specified by:

readDataFrame in interface SpdyFrameDecoderDelegate

readSynStreamFrame

public void readSynStreamFrame(int streamId,
                               int associatedToStreamId,
                               byte priority,
                               boolean last,
                               boolean unidirectional)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a SYN_STREAM frame is received. The Name/Value Header Block is not included. See readHeaderBlock().

Specified by:

readSynStreamFrame in interface SpdyFrameDecoderDelegate

readSynReplyFrame

public void readSynReplyFrame(int streamId,
                              boolean last)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a SYN_REPLY frame is received. The Name/Value Header Block is not included. See readHeaderBlock().

Specified by:

readSynReplyFrame in interface SpdyFrameDecoderDelegate

readRstStreamFrame

public void readRstStreamFrame(int streamId,
                               int statusCode)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a RST_STREAM frame is received.

Specified by:

readRstStreamFrame in interface SpdyFrameDecoderDelegate

readSettingsFrame

public void readSettingsFrame(boolean clearPersisted)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a SETTINGS frame is received. Settings are not included. See readSetting().

Specified by:

readSettingsFrame in interface SpdyFrameDecoderDelegate

readSetting

public void readSetting(int id,
                        int value,
                        boolean persistValue,
                        boolean persisted)

Description copied from interface: SpdyFrameDecoderDelegate

Called when an individual setting within a SETTINGS frame is received.

Specified by:

readSetting in interface SpdyFrameDecoderDelegate

readSettingsEnd

public void readSettingsEnd()

Description copied from interface: SpdyFrameDecoderDelegate

Called when the entire SETTINGS frame has been received.

Specified by:

readSettingsEnd in interface SpdyFrameDecoderDelegate

readPingFrame

public void readPingFrame(int id)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a PING frame is received.

Specified by:

readPingFrame in interface SpdyFrameDecoderDelegate

readGoAwayFrame

public void readGoAwayFrame(int lastGoodStreamId,
                            int statusCode)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a GOAWAY frame is received.

Specified by:

readGoAwayFrame in interface SpdyFrameDecoderDelegate

readHeadersFrame

public void readHeadersFrame(int streamId,
                             boolean last)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a HEADERS frame is received. The Name/Value Header Block is not included. See readHeaderBlock().

Specified by:

readHeadersFrame in interface SpdyFrameDecoderDelegate

readWindowUpdateFrame

public void readWindowUpdateFrame(int streamId,
                                  int deltaWindowSize)

Description copied from interface: SpdyFrameDecoderDelegate

Called when a WINDOW_UPDATE frame is received.

Specified by:

readWindowUpdateFrame in interface SpdyFrameDecoderDelegate

readHeaderBlock

public void readHeaderBlock(ByteBuf headerBlock)

Description copied from interface: SpdyFrameDecoderDelegate

Called when the header block within a SYN_STREAM, SYN_REPLY, or HEADERS frame is received.

Specified by:

readHeaderBlock in interface SpdyFrameDecoderDelegate

readHeaderBlockEnd

public void readHeaderBlockEnd()

Description copied from interface: SpdyFrameDecoderDelegate

Called when an entire header block has been received.

Specified by:

readHeaderBlockEnd in interface SpdyFrameDecoderDelegate

newSpdyUnknownFrame

protected SpdyFrame newSpdyUnknownFrame(int frameType,
                                        byte flags,
                                        ByteBuf payload)

Create a SpdyUnknownFrame.

isValidUnknownFrameHeader

protected boolean isValidUnknownFrameHeader(int streamId,
                                            int type,
                                            byte flags,
                                            int length)

Check whether the unknown frame is valid, if not, the frame will be discarded, otherwise, the frame will be passed to SpdyFrameDecoder.decodeUnknownFrame(int, byte, int, ByteBuf).

By default this method always returns false, sub-classes may override this.

readFrameError

public void readFrameError(String message)

Description copied from interface: SpdyFrameDecoderDelegate

Called when an unrecoverable session error has occurred.

Specified by:

readFrameError in interface SpdyFrameDecoderDelegate