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    • com.virjar.sekiro.netty.protocol.SekiroNatMessageDecoder Maven / Gradle / Ivy

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    ratel api,used for developer on ratel system,an extension for xposed framewrok,ratel api compatable with original xposed framework

    There is a newer version: 1.0.5
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    package com.virjar.sekiro.netty.protocol;

import java.util.List;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;

public class SekiroNatMessageDecoder extends ByteToMessageDecoder {

    private static final byte HEADER_SIZE = 4;

    private static final int TYPE_SIZE = 1;

    private static final int SERIAL_NUMBER_SIZE = 8;

    private static final int URI_LENGTH_SIZE = 1;


    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf in, List out) {
        while (true) {
            if (in.readableBytes() < HEADER_SIZE) {
                return;
            }

            int frameLength = in.getInt(0);
            if (in.readableBytes() < frameLength) {
                return;
            }
            in.readInt();
            SekiroNatMessage sekiroNatMessage = new SekiroNatMessage();
            byte type = in.readByte();
            long sn = in.readLong();

            sekiroNatMessage.setSerialNumber(sn);

            sekiroNatMessage.setType(type);

            byte uriLength = in.readByte();
            byte[] uriBytes = new byte[uriLength];
            in.readBytes(uriBytes);
            sekiroNatMessage.setExtra(new String(uriBytes));

            byte[] data = new byte[frameLength - TYPE_SIZE - SERIAL_NUMBER_SIZE - URI_LENGTH_SIZE - uriLength];
            in.readBytes(data);
            sekiroNatMessage.setData(data);

            out.add(sekiroNatMessage);
            // in.release();

        }
    }
}    
    
    
    

    




    
    
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