WebSocketProtoCodec.java 文件源码

@Override
protected void encode(ChannelHandlerContext ctx, Proto proto, List<Object> list) throws Exception {
    ByteBuf byteBuf = ByteBufAllocator.DEFAULT.buffer();
    if (proto.getBody() != null) {
        byteBuf.writeInt(Proto.HEADER_LENGTH + proto.getBody().length);
        byteBuf.writeShort(Proto.HEADER_LENGTH);
        byteBuf.writeShort(Proto.VERSION);
        byteBuf.writeInt(proto.getOperation());
        byteBuf.writeInt(proto.getSeqId());
        byteBuf.writeBytes(proto.getBody());
    } else {
        byteBuf.writeInt(Proto.HEADER_LENGTH);
        byteBuf.writeShort(Proto.HEADER_LENGTH);
        byteBuf.writeShort(Proto.VERSION);
        byteBuf.writeInt(proto.getOperation());
        byteBuf.writeInt(proto.getSeqId());
    }

    list.add(new BinaryWebSocketFrame(byteBuf));

    logger.debug("encode: {}", proto);
}