Package io.netty.handler.codec.socksx.v4
Class Socks4ServerDecoder
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- io.netty.channel.ChannelHandlerAdapter
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- io.netty.channel.ChannelInboundHandlerAdapter
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- io.netty.handler.codec.ByteToMessageDecoder
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- io.netty.handler.codec.ReplayingDecoder<Socks4ServerDecoder.State>
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- io.netty.handler.codec.socksx.v4.Socks4ServerDecoder
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- All Implemented Interfaces:
ChannelHandler,ChannelInboundHandler
public class Socks4ServerDecoder extends ReplayingDecoder<Socks4ServerDecoder.State>
Decodes a singleSocks4CommandRequestfrom the inboundByteBufs. On successful decode, this decoder will forward the received data to the next handler, so that other handler can remove this decoder later. On failed decode, this decoder will discard the received data, so that other handler closes the connection later.
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Nested Class Summary
Nested Classes Modifier and Type Class Description (package private) static classSocks4ServerDecoder.State-
Nested classes/interfaces inherited from class io.netty.handler.codec.ByteToMessageDecoder
ByteToMessageDecoder.Cumulator
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Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler
ChannelHandler.Sharable
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Field Summary
Fields Modifier and Type Field Description private java.lang.StringdstAddrprivate intdstPortprivate static intMAX_FIELD_LENGTHprivate Socks4CommandTypetypeprivate java.lang.StringuserId-
Fields inherited from class io.netty.handler.codec.ByteToMessageDecoder
COMPOSITE_CUMULATOR, MERGE_CUMULATOR
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Constructor Summary
Constructors Constructor Description Socks4ServerDecoder()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description protected voiddecode(ChannelHandlerContext ctx, ByteBuf in, java.util.List<java.lang.Object> out)Decode the from oneByteBufto an other.private voidfail(java.util.List<java.lang.Object> out, java.lang.Exception cause)private static java.lang.StringreadString(java.lang.String fieldName, ByteBuf in)Reads a variable-length NUL-terminated string as defined in SOCKS4.-
Methods inherited from class io.netty.handler.codec.ReplayingDecoder
callDecode, checkpoint, checkpoint, state, state
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Methods inherited from class io.netty.handler.codec.ByteToMessageDecoder
actualReadableBytes, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered
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Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter
channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught
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Methods inherited from class io.netty.channel.ChannelHandlerAdapter
ensureNotSharable, handlerAdded, isSharable
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface io.netty.channel.ChannelHandler
handlerAdded
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Field Detail
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MAX_FIELD_LENGTH
private static final int MAX_FIELD_LENGTH
- See Also:
- Constant Field Values
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type
private Socks4CommandType type
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dstAddr
private java.lang.String dstAddr
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dstPort
private int dstPort
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userId
private java.lang.String userId
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Method Detail
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decode
protected void decode(ChannelHandlerContext ctx, ByteBuf in, java.util.List<java.lang.Object> out) throws java.lang.Exception
Description copied from class:ByteToMessageDecoderDecode the from oneByteBufto an other. This method will be called till either the inputByteBufhas nothing to read when return from this method or till nothing was read from the inputByteBuf.- Specified by:
decodein classByteToMessageDecoder- Parameters:
ctx- theChannelHandlerContextwhich thisByteToMessageDecoderbelongs toin- theByteBuffrom which to read dataout- theListto which decoded messages should be added- Throws:
java.lang.Exception- is thrown if an error occurs
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fail
private void fail(java.util.List<java.lang.Object> out, java.lang.Exception cause)
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readString
private static java.lang.String readString(java.lang.String fieldName, ByteBuf in)Reads a variable-length NUL-terminated string as defined in SOCKS4.
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