/// <summary>
/// 由IP地址查找对应的位置信息的字符串
/// </summary>
public string Query2(string ip)
{
IpLocation result = Query(ip);
return((result.Country + result.Local).Replace("CZ88.NET", ""));
}
/// <summary>
/// 由IP地址查找对应的位置信息
/// </summary>
/// <param name="ip"> 要查找的IP地址 </param>
/// <returns> </returns>
/// <exception cref="ArgumentException"></exception>
public IpLocation Query(string ip)
{
if (ip == "::1")
{
ip = "127.0.0.1";
}
if (!_regex.Match(ip).Success)
{
throw new ArgumentException("IP格式错误");
}
IpLocation ipLocation = new IpLocation {
Ip = ip
};
long intIp = IpToInt(ip);
if ((intIp >= IpToInt("127.0.0.1") && (intIp <= IpToInt("127.255.255.255"))))
{
ipLocation.Country = "本机内部环回地址";
ipLocation.Local = "";
}
else
{
if ((((intIp >= IpToInt("0.0.0.0")) && (intIp <= IpToInt("2.255.255.255"))) ||
((intIp >= IpToInt("64.0.0.0")) && (intIp <= IpToInt("126.255.255.255")))) ||
((intIp >= IpToInt("58.0.0.0")) && (intIp <= IpToInt("60.255.255.255"))))
{
ipLocation.Country = "网络保留地址";
ipLocation.Local = "";
}
}
long right = Count;
long left = 0L;
long startIp;
long endIpOff;
int countryFlag;
while (left < (right - 1L))
{
long middle = (right + left) / 2L;
startIp = GetStartIp(middle, out endIpOff);
if (intIp == startIp)
{
left = middle;
break;
}
if (intIp > startIp)
{
left = middle;
}
else
{
right = middle;
}
}
startIp = GetStartIp(left, out endIpOff);
long endIp = GetEndIp(endIpOff, out countryFlag);
if ((startIp <= intIp) && (endIp >= intIp))
{
string local;
ipLocation.Country = GetCountry(endIpOff, countryFlag, out local);
ipLocation.Local = local.Replace("（我们一定要解放台湾！！！）", "");
}
else
{
ipLocation.Country = "未知";
ipLocation.Local = "";
}
return(ipLocation);
}