Beispiel #1
0
		private  Byte[] packetize(ICMP icmp)
		{
			Byte[] buff=new Byte[icmp.body_size+8];
			//Type
			buff[0]=icmp.type;
			//SubCode
			buff[1]=icmp.subcode;
			//CheckSum
			buff[2]=(Byte)(icmp.checkSum>>8);
			buff[3]=(Byte)(icmp.checkSum&0xFF);
			//ID
			buff[4]=(Byte)(icmp.id>>8);
			buff[5]=(Byte)(icmp.id&0xFF);
			//Sequence
			buff[6]=(Byte)(icmp.sq>>8);
			buff[7]=(Byte)(icmp.sq&0xFF);
			//Data
			Array.Copy(icmp.body,0,buff,8,icmp.body_size);
			//OID
			buff[8]=(Byte)(icmp.oid>>24);
			buff[9]=(Byte)(icmp.oid>>16);
			buff[10]=(Byte)(icmp.oid>>8);
			buff[11]=(Byte)(icmp.oid&0xFF);
			//TimeTick
			buff[12]=(Byte)(icmp.send_time>>24);
			buff[13]=(Byte)(icmp.send_time>>16);
			buff[14]=(Byte)(icmp.send_time>>8);
			buff[15]=(Byte)(icmp.send_time&0xFF);
			return buff;
		}
Beispiel #2
0
		public  static ICMP ToICMP(Byte[] rdata){
			if(rdata.Length<36) return null;
			ICMP icmp=new ICMP();
			//deCode
			icmp.type=rdata[20];
			icmp.subcode=rdata[21];
			icmp.checkSum=(UInt16)((rdata[22]<<8)+rdata[23]);
			icmp.id=(UInt16)((rdata[24]<<8)+rdata[25]);
			icmp.sq=(UInt16)((rdata[26]<<8)+rdata[27]);
			icmp.body_size=0;
			icmp.body=null;
			icmp.oid=(rdata[28]<<24)+(rdata[29]<<16)+(rdata[30]<<8)+rdata[31];
			icmp.send_time=(uint)((rdata[32]<<24)+(rdata[33]<<16)
				+(rdata[34]<<8)+rdata[35]);
			return icmp;
		}
Beispiel #3
0
		public int Send(int lsize){
			long	send_ticks=0;
			Byte[] 	sbuff;
			
			if(lsize<=8) return -1004;
			if(target==null) return -1002;
			ICMP icmp=new ICMP(lsize);
			icmp.id=pid;
			icmp.sq=sq++;
			if(icmp.sq>=1000) sq=1;
			QueryPerformanceCounter(ref send_ticks);
			icmp.send_time=(uint)(send_ticks*1000000.0/freq);//milisec
			//Console.Write("SendTime:{0} ",icmp.send_time);
			icmp.oid=oid;
			sbuff=icmp.ToBuffer();
			//
			/*
			Console.WriteLine("Send:id={0},sq={1},oid={2},send_time={3}",
					icmp.id,icmp.sq,icmp.oid,icmp.send_time);
			*/
			int nBytes=socket.SendTo(sbuff,sbuff.Length,0,target);
			if(nBytes!=sbuff.Length){
				return -1003;
			}
			return 0;
		}