@ChannelHandler.Sharable public class ProtobufVarint32LengthFieldPrepender extends MessageToByteEncoder<ByteBuf>
BEFORE ENCODE (300 bytes) AFTER ENCODE (302 bytes)
+---------------+ +--------+---------------+
| Protobuf Data |-------------->| Length | Protobuf Data |
| (300 bytes) | | 0xAC02 | (300 bytes) |
+---------------+ +--------+---------------+
*
CodedOutputStream ， CodedOutputByteBufferNano
ChannelHandler.Sharable| Constructor and Description |
|---|
ProtobufVarint32LengthFieldPrepender() |
| Modifier and Type | Method and Description |
|---|---|
protected void |
encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out)
将消息编码为 ByteBuf 。
|
acceptOutboundMessage, allocateBuffer, isPreferDirect, writebind, close, connect, deregister, disconnect, flush, readensureNotSharable, exceptionCaught, handlerAdded, handlerRemoved, isSharableclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitexceptionCaught, handlerAdded, handlerRemovedprotected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) throws java.lang.Exception
MessageToByteEncoder
ByteBuf 。
这个方法将被编码器处理的每个书面信息调用。
encode
MessageToByteEncoder<ByteBuf>
ctx - 这是MessageToByteEncoder所属的ChannelHandlerContext
msg - 要编码的消息
out - 编码消息将写入其中的ByteBuf
java.lang.Exception - 发生错误时抛出
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