@ChannelHandler.Sharable public class ProtobufVarint32LengthFieldPrepender extends OneToOneEncoder
BEFORE DECODE (300 bytes) AFTER DECODE (302 bytes) +---------------+ +--------+---------------+ | Protobuf Data |-------------->| Length | Protobuf Data | | (300 bytes) | | 0xAC02 | (300 bytes) | +---------------+ +--------+---------------+*
CodedOutputStream
ChannelHandler.Sharable
构造器和说明 |
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ProtobufVarint32LengthFieldPrepender() |
限定符和类型 | 方法和说明 |
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protected java.lang.Object |
encode(ChannelHandlerContext ctx,
Channel channel,
java.lang.Object msg)
Transforms the specified message into another message and return the
transformed message.
|
doEncode, handleDownstream
protected java.lang.Object encode(ChannelHandlerContext ctx, Channel channel, java.lang.Object msg) throws java.lang.Exception
OneToOneEncoder
null
, unlike
you can in OneToOneDecoder.decode(ChannelHandlerContext, Channel, Object)
;
you must return something, at least ChannelBuffers.EMPTY_BUFFER
.encode
在类中 OneToOneEncoder
java.lang.Exception