/// <summary>
/// IP位置查询
/// </summary>
/// <param name="address">ipv4地址</param>
/// <returns>
/// IP位置信息
/// </returns>
public static IpLocation Find(string address)
{
if (IPAddress.TryParse(address, out IPAddress ip))
{
var octets = ip.GetAddressBytes();
if (octets.Length == 4)
{
return(Searcher.Value.Search(IpLocationHelper.IPv4ToInteger(ip.GetAddressBytes())));
}
}
return(null);
}
/// <summary>
/// IP查询
/// </summary>
/// <param name="address">IP地址</param>
/// <returns>IP位置信息</returns>
public IpLocation Search(uint address)
{
if (IpLocationHelper.IsReserved(address))
{
return(new IpLocation
{
City = "内网IP",
Isp = "保留地址"
});
}
//IP索引分区前缀
var prefix = (byte)(address >> 24);
FindPartition(prefix, out int start, out int end);
//如果不在分区索引上则从整个IP数据储存进行搜索
if (start < 0 || end < 0)
{
start = ip_start_position;
end = (int)DataSource.Length - 1;
}
string data;
if (DataSource is MemoryDataSource)
{
data = FindDataByMemory(start, end, address);
}
else
{
data = FindData(start, end, address);
}
if (!string.IsNullOrWhiteSpace(data))
{
var seg = data.Split('|');
return(new IpLocation
{
Country = seg[0],
Province = seg[1],
City = seg[2],
Isp = seg[3]
});
}
return(null);
}