C# 获取IP地址

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace Elight.Infrastructure
{
/// <summary>
/// 网络操作。
/// </summary>
public class Net
{
#region Ip(获取Ip)
/// <summary>
/// 获取IP。
/// </summary>
public static string Ip
{
get
{
var result = string.Empty;
if (HttpContext.Current != null)
{
result = GetWebClientIp();
}
if (string.IsNullOrEmpty(result))
{
result = GetLanIp();
}
return result;
}
}

/// <summary>
/// 获取Web客户端IP。
/// </summary>
private static string GetWebClientIp()
{
//HttpContext.Current.Request.UserHostAddress
var ip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] ?? HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
foreach (var hostAddress in Dns.GetHostAddresses(ip))
{
if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
return hostAddress.ToString();
}
return string.Empty;
}

/// <summary>
/// 获取局域网IP。
/// </summary>
private static string GetLanIp()
{
foreach (var hostAddress in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
return hostAddress.ToString();
}
return string.Empty;
}

/// <summary>
/// 获取IP地址信息（源：淘宝IP库接口）。
/// </summary>
/// <param name="ip">IP</param>
/// <returns></returns>
public static string GetAddress(string ip)
{
string result = string.Empty;
var url = "http://ip.taobao.com/service/getIpInfo.php?ip=" + ip;
try
{
using (var client = new WebClient())
{
return client.DownloadString(url).ToObject<TaoBaoIpEnitiy>().GetAddress();
}
}
catch
{
return string.Empty;
}
}

#endregion

#region Host(获取主机名)

/// <summary>
/// 获取主机名。
/// </summary>
public static string Host
{
get
{
return HttpContext.Current == null ? Dns.GetHostName() : GetWebClientHostName();
}
}

/// <summary>
/// 获取Web客户端主机名。
/// </summary>
private static string GetWebClientHostName()
{
if (!HttpContext.Current.Request.IsLocal)
return string.Empty;
var ip = GetWebClientIp();
var result = Dns.GetHostEntry(IPAddress.Parse(ip)).HostName;
if (result == "localhost.localdomain")
result = Dns.GetHostName();
return result;
}

#endregion

#region 获取mac地址
/// <summary>
/// 返回描述本地计算机上的网络接口的对象(网络接口也称为网络适配器)。
/// </summary>
/// <returns></returns>
public static NetworkInterface[] NetCardInfo()
{
return NetworkInterface.GetAllNetworkInterfaces();
}
///<summary>
/// 通过NetworkInterface读取网卡Mac
///</summary>
///<returns></returns>
public static List<string> GetMacByNetworkInterface()
{
List<string> macs = new List<string>();
NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface ni in interfaces)
{
macs.Add(ni.GetPhysicalAddress().ToString());
}
return macs;
}
#endregion

#region Browser(获取浏览器信息)
/// <summary>
/// 获取浏览器信息
/// </summary>
public static string Browser
{
get
{
if (HttpContext.Current == null)
return string.Empty;
var browser = HttpContext.Current.Request.Browser;
return string.Format("{0} {1}", browser.Browser, browser.Version);
}
}
#endregion

#region 淘宝IP地址库接口模型
/// <summary>
/// 淘宝IP地址库接口模型。
/// http://ip.taobao.com/instructions.php
/// </summary>
internal class TaoBaoIpEnitiy
{
/// <summary>
/// 响应结果。
/// </summary>
public int code { get; set; }
/// <summary>
/// 响应数据。
/// </summary>
public IpDataEnitiy data { get; set; }

public string GetAddress()
{
if (this.data == null)
{
return string.Empty;
}
return string.Format("{0} {1} {2}", this.data.country, this.data.region, this.data.city);
}
}

internal class IpDataEnitiy
{
/// <summary>
/// 国家
/// </summary>
public string country { get; set; }
/// <summary>
/// 国家ID
/// </summary>
public string country_id { get; set; }
/// <summary>
/// 地区
/// </summary>
public string area { get; set; }
/// <summary>
/// 地区ID
/// </summary>
public string area_id { get; set; }
/// <summary>
/// 省份
/// </summary>
public string region { get; set; }
/// <summary>
/// 省份ID
/// </summary>
public string region_id { get; set; }
/// <summary>
/// 城市
/// </summary>
public string city { get; set; }
/// <summary>
/// 城市ID
/// </summary>
public string city_id { get; set; }
/// <summary>
/// 地区
/// </summary>
public string county { get; set; }
/// <summary>
/// 地区ID
/// </summary>
public string county_id { get; set; }
/// <summary>
/// 运营商
/// </summary>
public string isp { get; set; }
/// <summary>
/// 运营商ID
/// </summary>
public string isp_id { get; set; }
/// <summary>
/// IP
/// </summary>
public string ip { get; set; }
}
#endregion
}
}