io.netty.handler.codec.protobuf

类 ProtobufVarint32LengthFieldPrepender

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelOutboundHandlerAdapter

io.netty.handler.codec.MessageToByteEncoder<ByteBuf>

io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender

所有已实现的接口:

ChannelHandler, ChannelOutboundHandler

@ChannelHandler.Sharable
public class ProtobufVarint32LengthFieldPrepender
extends MessageToByteEncoder<ByteBuf>

An encoder that prepends the Google Protocol Buffers Base 128 Varints integer length field. For example:

 BEFORE ENCODE (300 bytes)       AFTER ENCODE (302 bytes)
 +---------------+               +--------+---------------+
 | Protobuf Data |-------------->| Length | Protobuf Data |
 |  (300 bytes)  |               | 0xAC02 |  (300 bytes)  |
 +---------------+               +--------+---------------+
 

*

另请参阅:

CodedOutputStream, CodedOutputByteBufferNano

嵌套类概要

从接口继承的嵌套类/接口 io.netty.channel.ChannelHandler

ChannelHandler.Sharable

构造器概要

构造器

构造器和说明
ProtobufVarint32LengthFieldPrepender()

方法概要

限定符和类型	方法和说明
protected void	encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) Encode a message into a ByteBuf.

从类继承的方法 io.netty.handler.codec.MessageToByteEncoder

acceptOutboundMessage, allocateBuffer, isPreferDirect, write

从类继承的方法 io.netty.channel.ChannelOutboundHandlerAdapter

bind, close, connect, deregister, disconnect, flush, read

从类继承的方法 io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, exceptionCaught, handlerAdded, handlerRemoved, isSharable

从类继承的方法 java.lang.Object

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

从接口继承的方法 io.netty.channel.ChannelHandler

exceptionCaught, handlerAdded, handlerRemoved

构造器详细资料

ProtobufVarint32LengthFieldPrepender

public ProtobufVarint32LengthFieldPrepender()

方法详细资料

encode

protected void encode(ChannelHandlerContext ctx,
                      ByteBuf msg,
                      ByteBuf out)
               throws java.lang.Exception

从类复制的说明: MessageToByteEncoder

Encode a message into a ByteBuf. This method will be called for each written message that can be handled by this encoder.

指定者:

encode 在类中 MessageToByteEncoder<ByteBuf>

参数:

ctx - the ChannelHandlerContext which this MessageToByteEncoder belongs to

msg - the message to encode

out - the ByteBuf into which the encoded message will be written

抛出:

java.lang.Exception - is thrown if an error occurs