RREP.java :  » Network » adhoc-on-android » adhoc » aodv » pdu » Android Open Source

package adhoc.aodv.pdu;

import adhoc.aodv.Constants;
import adhoc.aodv.exception.BadPduFormatException;

public class RREP extends AodvPDU {
    private int hopCount = 0;
    private int srcSeqNum;

    
    public RREP(){
    }
    
    public RREP(  int sourceAddress,
            int destinationAddress,
            int sourceSequenceNumber,
            int destinationSequenceNumber,
            int hopCount){
      
      super(sourceAddress,destinationAddress,destinationSequenceNumber);
      pduType = Constants.RREP_PDU;
      srcSeqNum = sourceSequenceNumber;
      this.hopCount = hopCount;
    }
    
    public RREP(  int sourceAddress,
            int destinationAddress,
            int sourceSequenceNumber,
            int destinationSequenceNumber) {
      
      super(sourceAddress,destinationAddress,destinationSequenceNumber);
      pduType = Constants.RREP_PDU;
      srcSeqNum = sourceSequenceNumber;
    }
  
  public int getHopCount(){
    return hopCount;
  }
  
  public void incrementHopCount(){
    hopCount++;
  }
  
  public int getDestinationSequenceNumber(){
    return destSeqNum;
  }

  @Override
  public byte[] toBytes() {
    return this.toString().getBytes();
  }
  
  @Override
  public String toString() {
    return super.toString()+srcSeqNum+";"+hopCount;
  }
  
  @Override
  public void parseBytes(byte[] rawPdu) throws BadPduFormatException {
    String[] s = new String(rawPdu).split(";",6);
    if(s.length != 6){
      throw new BadPduFormatException(  "RREP: could not split " +
                        "the expected # of arguments from rawPdu. " +
                        "Expecteded 6 args but were given "+s.length  );
    }
    try {
      pduType = Byte.parseByte(s[0]);
      if(pduType != Constants.RREP_PDU){
        throw new BadPduFormatException(  "RREP: pdu type did not match. " +
                          "Was expecting: "+Constants.RREP_PDU+
                          " but parsed: "+pduType  );
      }
      srcAddress = Integer.parseInt(s[1]);
      destAddress = Integer.parseInt(s[2]);
      destSeqNum =Integer.parseInt(s[3]);
      srcSeqNum = Integer.parseInt(s[4]);
      hopCount = Integer.parseInt(s[5]);
    } catch (NumberFormatException e) {
      throw new BadPduFormatException("RREP: falied in parsing arguments to the desired types");
    }
    
  }
}