这段时间一直在学习C#, 以前一直搞网络的,还是从Ping程序的实现写起吧.
ping的调用方法如下:
Ping mPing=new Ping();
mPing.Pinging(“127.0.0.1“,255,65535);
mPing.Receive(); //成功接收返回true,timeout 返回false
全部源代码如下:
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
namespace Ping
{
/// <summary>
/// Summary description for Ping.
/// </summary>
///
//
//
//IP Header
public class IPHDR
{
public byte VIHL
{
get{return mVIHL;}
set{mVIHL=value;}
}private byte mVIHL;
public byte TOS
{
get{return mTOS;}
set{mTOS=value;}
}private byte mTOS;
public short TotLen
{
get{return mTotLen;}
set{mTotLen=value;}
}private short mTotLen;
public short ID
{
get{return mID;}
set{mID=value;}
}private short mID;
public short FlagOff
{
get{return mFlagOff;}
set{mFlagOff=value;}
}private short mFlagOff;
public byte TTL
{
get{return mTTL;}
set{mTTL=value;}
}private byte mTTL;
public byte Protocol
{
get{return mProtocol;}
set{mProtocol=value;}
}private byte mProtocol;
public ushort Checksum
{
get{return mChecksum;}
set{mChecksum = value;}
}private ushort mChecksum;
public ulong iaSrc
{
get{return miaSrc;}
set{miaSrc=value;}
}private ulong miaSrc;
public ulong iaDst
{
get{return miaDst;}
set{miaDst=value;}
}private ulong miaDst;

public static string Address(ulong obj)
{
byte s1=(byte)obj;
byte s2=(byte)(obj>>8);
byte s3=(byte)(obj>>16);
byte s4=(byte)(obj>>24);
return String.Format("{0}.{1}.{2}.{3}",s1,s2,s3,s4);//s1+"."+s2+"."+s3+"."+s4;
}
public void Encode(BinaryWriter writer)
{
writer.Write(VIHL);
writer.Write(TOS);
writer.Write((Int16)TotLen);
writer.Write((Int16)ID);
writer.Write((Int16)FlagOff);
writer.Write(TTL);
writer.Write(Protocol);
writer.Write((UInt16)Checksum);
writer.Write((UInt32)iaSrc);
writer.Write((UInt32)iaDst);

}
public void Decode(BinaryReader reader)
{
VIHL=reader.ReadByte();
TOS=reader.ReadByte();
TotLen=reader.ReadInt16();
ID=reader.ReadInt16();
FlagOff=reader.ReadInt16();
TTL=reader.ReadByte();
Protocol=reader.ReadByte();
Checksum=reader.ReadUInt16();
iaSrc=reader.ReadUInt32();
iaDst=reader.ReadUInt32();
}

}
//ICMP Header;
public class ICMPHDR
{
public byte Type
{
get{return mType;}
set{mType=value;}
}private byte mType;
public byte Code
{
get{return mCode;}
set{mCode=value;}
}private byte mCode=0;
public ushort Checksum
{
get{return mChecksum;}
set{mChecksum=value;}
}private ushort mChecksum=0;
public ushort ID
{
get{return mID;}
set{mID=value;}
}private ushort mID;
public ushort Seq
{
get{return mSeq;}
set{mSeq=value;}
}private ushort mSeq;
public ulong tmSend
{
get{return mtmSend;}
set{mtmSend=value;}
}private ulong mtmSend;

public int nTaskId
{
get{return mnTaskId;}
set{mnTaskId=value;}
}private int mnTaskId;
public void Encode(BinaryWriter writer)
{
writer.Write(Type);
writer.Write(Code);
writer.Write((UInt16)Checksum);
writer.Write((UInt16)ID);
writer.Write((UInt16)Seq);
writer.Write((UInt32)tmSend);
writer.Write(nTaskId);
}
public void Decode(BinaryReader reader)
{
Type=reader.R