References required:
HttpContextWrapper- System.Web.dllRemoteEndpointMessageProperty- System.ServiceModel.dllOwinContext- Microsoft.Owin.dll (you will have it already if you use Owin package)
using System.Net.Http; public static class HttpRequestMessageExtensions { private const string HttpContext = "MS_HttpContext"; private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty"; private const string OwinContext = "MS_OwinContext"; public static string GetClientIpAddress(this HttpRequestMessage request) { // Web-hosting. Needs reference to System.Web.dll if (request.Properties.ContainsKey(HttpContext)) { dynamic ctx = request.Properties[HttpContext]; if (ctx != null) { return ctx.Request.UserHostAddress; } } // Self-hosting. Needs reference to System.ServiceModel.dll. if (request.Properties.ContainsKey(RemoteEndpointMessage)) { dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage]; if (remoteEndpoint != null) { return remoteEndpoint.Address; } } // Self-hosting using Owin. Needs reference to Microsoft.Owin.dll. if (request.Properties.ContainsKey(OwinContext)) { dynamic owinContext = request.Properties[OwinContext]; if (owinContext != null) { return owinContext.Request.RemoteIpAddress; } } return null; } }
第二种：
((System.Web.HttpContextWrapper)Request.Properties["MS_HttpContext"]).Request.UserHostAddress;
public class CheckIP { #region 获取浏览器版本号 /// <summary> /// 获取浏览器版本号 /// </summary> /// <returns></returns> public static string GetBrowser() { HttpBrowserCapabilities bc = HttpContext.Current.Request.Browser; return bc.Browser + bc.Version; } #endregion #region 获取操作系统版本号 /// <summary> /// 获取操作系统版本号 /// </summary> /// <returns></returns> public static string GetOSVersion() { //UserAgent var userAgent = HttpContext.Current.Request.ServerVariables["HTTP_USER_AGENT"]; var osVersion = "未知"; if (userAgent.Contains("NT 6.1")) { osVersion = "Windows 7"; } else if (userAgent.Contains("NT 6.0")) { osVersion = "Windows Vista/Server 2008"; } else if (userAgent.Contains("NT 5.2")) { osVersion = "Windows Server 2003"; } else if (userAgent.Contains("NT 5.1")) { osVersion = "Windows XP"; } else if (userAgent.Contains("NT 5")) { osVersion = "Windows 2000"; } else if (userAgent.Contains("NT 4")) { osVersion = "Windows NT4"; } else if (userAgent.Contains("Me")) { osVersion = "Windows Me"; } else if (userAgent.Contains("98")) { osVersion = "Windows 98"; } else if (userAgent.Contains("95")) { osVersion = "Windows 95"; } else if (userAgent.Contains("Mac")) { osVersion = "Mac"; } else if (userAgent.Contains("Unix")) { osVersion = "UNIX"; } else if (userAgent.Contains("Linux")) { osVersion = "Linux"; } else if (userAgent.Contains("SunOS")) { osVersion = "SunOS"; } return osVersion; } #endregion #region 获取客户端IP地址 /// <summary> /// 获取客户端IP地址 /// </summary> /// <returns></returns> public static string GetIP() { string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (string.IsNullOrEmpty(result)) { result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } if (string.IsNullOrEmpty(result)) { result = HttpContext.Current.Request.UserHostAddress; } if (string.IsNullOrEmpty(result)) { return "0.0.0.0"; } return result; } #endregion #region 取客户端真实IP /// <summary> /// 取得客户端真实IP。如果有代理则取第一个非内网地址 /// </summary> public static string GetIPAddress { get { var result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (!string.IsNullOrEmpty(result)) { //可能有代理 if (result.IndexOf(".") == -1) //没有“.”肯定是非IPv4格式 result = null; else { if (result.IndexOf(",") != -1) { //有“,”，估计多个代理。取第一个不是内网的IP。 result = result.Replace(" ", "").Replace("'", ""); string[] temparyip = result.Split(",;".ToCharArray()); for (int i = 0; i < temparyip.Length; i++) { if (IsIPAddress(temparyip[i]) && temparyip[i].Substring(0, 3) != "10." && temparyip[i].Substring(0, 7) != "192.168" && temparyip[i].Substring(0, 7) != "172.16.") { return temparyip[i]; //找到不是内网的地址 } } } else if (IsIPAddress(result)) //代理即是IP格式 return result; else result = null; //代理中的内容 非IP，取IP } } string IpAddress = (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null && HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != String.Empty) ? HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] : HttpContext.Current.Request.ServerVariables["HTTP_X_REAL_IP"]; if (string.IsNullOrEmpty(result)) result = HttpContext.Current.Request.ServerVariables["HTTP_X_REAL_IP"]; if (string.IsNullOrEmpty(result)) result = HttpContext.Current.Request.UserHostAddress; return result; } } #endregion #region 判断是否是IP格式 /// <summary> /// 判断是否是IP地址格式 0.0.0.0 /// </summary> /// <param name="str1">待判断的IP地址</param> /// <returns>true or false</returns> public static bool IsIPAddress(string str1) { if (string.IsNullOrEmpty(str1) || str1.Length < 7 || str1.Length > 15) return false; const string regFormat = @"^d{1,3}[.]d{1,3}[.]d{1,3}[.]d{1,3}$"; var regex = new Regex(regFormat, RegexOptions.IgnoreCase); return regex.IsMatch(str1); } #endregion #region 获取公网IP /// <summary> /// 获取公网IP /// </summary> /// <returns></returns> public static string GetNetIP() { string tempIP = ""; try { System.Net.WebRequest wr = System.Net.WebRequest.Create("http://city.ip138.com/ip2city.asp"); System.IO.Stream s = wr.GetResponse().GetResponseStream(); System.IO.StreamReader sr = new System.IO.StreamReader(s, System.Text.Encoding.GetEncoding("gb2312")); string all = sr.ReadToEnd(); //读取网站的数据 int start = all.IndexOf("[") + 1; int end = all.IndexOf("]", start); tempIP = all.Substring(start, end - start); sr.Close(); s.Close(); } catch { if (System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).AddressList.Length > 1) tempIP = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).AddressList[1].ToString(); if (string.IsNullOrEmpty(tempIP)) return GetIP(); } return tempIP; } #endregion
/// <summary> /// 获取客户端IP地址（无视代理） /// </summary> /// <returns>若失败则返回回送地址</returns> public static string GetHostAddress() { string userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; if (string.IsNullOrEmpty(userHostAddress)) { if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null) userHostAddress = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString().Split(',')[0].Trim(); } if (string.IsNullOrEmpty(userHostAddress)) { userHostAddress = HttpContext.Current.Request.UserHostAddress; } //最后判断获取是否成功，并检查IP地址的格式（检查其格式非常重要） if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress)) { return userHostAddress; } return "127.0.0.1"; } /// <summary> /// 检查IP地址格式 /// </summary> /// <param name="ip"></param> /// <returns></returns> public static bool IsIP(string ip) { return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]d|25[0-5]|[01]?dd?).){3}(2[0-4]d|25[0-5]|[01]?dd?)$"); }