nbsp;    {
      if (m_Monitor!=null)
      {
       byte pkt = new byte[received];
       Array.Copy(Buffer, 0, pkt, 0, received);
       OnNewPacket(new Packet(pkt, DateTime.Now));
      }
     }
     catch(Exception e)
     {
      throw;
     }

     m_Monitor.BeginReceive(Buffer, 0, Buffer.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
    }
    catch (Exception e)
    {

    }
   }

   protected void OnNewPacket(Packet p)
   {
    NewPacket(this, p);
   }
}
}


using System;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace UpdateTester
{

public enum Precedence
{
   Routine = 0,
   Priority = 1,
   Immediate = 2,
   Flash = 3,
   FlashOverride = 4,
   CRITICECP = 5,
   InternetworkControl = 6,
   NetworkControl = 7
}

public enum Delay
{
   NormalDelay = 0,
   LowDelay = 1
}

public enum Throughput
{
   NormalThroughput = 0,
   HighThroughput = 1
}

public enum Reliability
{
   NormalReliability = 0,
   HighReliability = 1
}

public enum Protocol
{
   Ggp = 3,
   Icmp = 1,
   Idp = 22,
   Igmp = 2,
   IP = 4,
   ND = 77,
   Pup = 12,
   Tcp = 6,
   Udp = 17,
   Other = -1
}
/**//// <summary>
/// Packet 的摘要说明。
/// </summary>
public class Packet
{

   private byte m_Raw;
   private DateTime m_Time;
   private int m_Version;
   private int m_HeaderLength;
   private Precedence m_Precedence;
   private Delay m_Delay;
   private Throughput m_Throughput;
   private Reliability m_Reliability;
   private int m_TotalLength;
   private int m_Identification;
   private int m_TimeToLive;
   private Protocol m_Protocol;
   private byte m_Checksum;
   private string m_SourceAddress;
   private string m_DestinationAddress;
   private int m_SourcePort;
   private int m_DestinationPort;

   public Packet()
   {
    //
    // TODO: 在此处添加构造函数逻辑
    //
   }
   //
   //   public Packet(byte raw):(byte raw, DateTime time

)
   //   {
   //    Packet(raw, DateTime.Now);
   //   }

   public Packet(byte raw, DateTime time)
   {
    if (raw==null)
    {
     throw