public class StompSubframeDecoder extends ReplayingDecoder<StompSubframeDecoder.State>
ByteBuf
s into StompHeadersSubframe
s and
StompContentSubframe
s.
maxLineLength
the maximum length of line -
restricts length of command and header lines
If the length of the initial line exceeds this value, a
TooLongFrameException
will be raised.
maxChunkSize
The maximum length of the content or each chunk. If the content length
(or the length of each chunk) exceeds this value, the content or chunk
ill be split into multiple StompContentSubframe
s whose length is
maxChunkSize
at maximum.
maxChunkSize
the transfer encoding of the HTTP message is 'chunked', this decoder
generates multiple StompContentSubframe
instances to avoid excessive memory
consumption. Note, that every message, even with no content decodes with
LastStompContentSubframe
at the end to simplify upstream message parsing.Modifier and Type | Class and Description |
---|---|
(package private) static class |
StompSubframeDecoder.State |
ByteToMessageDecoder.Cumulator
ChannelHandler.Sharable
Modifier and Type | Field and Description |
---|---|
private int |
alreadyReadChunkSize |
private long |
contentLength |
private static int |
DEFAULT_CHUNK_SIZE |
private static int |
DEFAULT_MAX_LINE_LENGTH |
private LastStompContentSubframe |
lastContent |
private int |
maxChunkSize |
private int |
maxLineLength |
COMPOSITE_CUMULATOR, MERGE_CUMULATOR
Constructor and Description |
---|
StompSubframeDecoder() |
StompSubframeDecoder(int maxLineLength,
int maxChunkSize) |
Modifier and Type | Method and Description |
---|---|
protected void |
decode(ChannelHandlerContext ctx,
ByteBuf in,
java.util.List<java.lang.Object> out)
Decode the from one
ByteBuf to an other. |
private static long |
getContentLength(StompHeaders headers,
long defaultValue) |
private StompCommand |
readCommand(ByteBuf in) |
private StompSubframeDecoder.State |
readHeaders(ByteBuf buffer,
StompHeaders headers) |
private static java.lang.String |
readLine(ByteBuf buffer,
int maxLineLength) |
private void |
resetDecoder() |
private static void |
skipControlCharacters(ByteBuf buffer) |
private static void |
skipNullCharacter(ByteBuf buffer) |
callDecode, checkpoint, checkpoint, state, state
actualReadableBytes, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered
channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught
ensureNotSharable, handlerAdded, isSharable
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
handlerAdded
private static final int DEFAULT_CHUNK_SIZE
private static final int DEFAULT_MAX_LINE_LENGTH
private final int maxLineLength
private final int maxChunkSize
private int alreadyReadChunkSize
private LastStompContentSubframe lastContent
private long contentLength
public StompSubframeDecoder()
public StompSubframeDecoder(int maxLineLength, int maxChunkSize)
protected void decode(ChannelHandlerContext ctx, ByteBuf in, java.util.List<java.lang.Object> out) throws java.lang.Exception
ByteToMessageDecoder
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
.decode
in class ByteToMessageDecoder
ctx
- the ChannelHandlerContext
which this ByteToMessageDecoder
belongs toin
- the ByteBuf
from which to read dataout
- the List
to which decoded messages should be addedjava.lang.Exception
- is thrown if an error occursprivate StompCommand readCommand(ByteBuf in)
private StompSubframeDecoder.State readHeaders(ByteBuf buffer, StompHeaders headers)
private static long getContentLength(StompHeaders headers, long defaultValue)
private static void skipNullCharacter(ByteBuf buffer)
private static void skipControlCharacters(ByteBuf buffer)
private static java.lang.String readLine(ByteBuf buffer, int maxLineLength)
private void resetDecoder()