C# 获取客户端IPv4地址的示例代码
网上找了一些获取客户端IP的方法,但本地测试时,返回的是IPv6的表示方法"::1":
Host文件里面:# ::1 localhost
后来找了获取IPv4的方法就可以了,比较好用:
public static string GetClientIPv4Address() { string ipv4 = String.Empty; foreach (IPAddress ip in Dns.GetHostAddresses(GetClientIP())) { if (ip.AddressFamily.ToString() == "InterNetwork") { ipv4 = ip.ToString(); break; } } if (ipv4 != String.Empty) { return ipv4; } // 利用 Dns.GetHostEntry 方法,由获取的 IPv6 位址反查 DNS 纪录, // 再逐一判断何者为 IPv4 协议,即可转为 IPv4 位址。 foreach (IPAddress ip in Dns.GetHostEntry(GetClientIP()).AddressList) //foreach (IPAddress ip in Dns.GetHostAddresses(Dns.GetHostName())) { if (ip.AddressFamily.ToString() == "InterNetwork") { ipv4 = ip.ToString(); break; } } return ipv4; } public static string GetClientIP() { if (null == HttpContext.Current.Request.ServerVariables["HTTP_VIA"]) { return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } else { return HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; } }
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