服务端:
//方法一 HttpContext.Current.Request.UserHostAddress; //方法二 HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; //方法三 string strHostName = System.Net.Dns.GetHostName(); string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString(); //方法四(无视代理) HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
客户端:
//方法五 var ip = '<!--#echo var="REMOTE_ADDR"-->'; alert("Your IP address is "+ip); //方法六(无视代理) function GetLocalIPAddress() { var obj = null; var rslt = ""; try { obj = new ActiveXObject("rcbdyctl.Setting"); rslt = obj.GetIPAddress; obj = null; } catch(e) { // } return rslt; }
22日添加:
来自印度的MCT Maulik Patel提供了一种服务端的解决方案,很好:
if(Context.Request.ServerVariables["HTTP_VIA"]!=null) // using proxy { ip=Context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString(); // Return real client IP. } else// not using proxy or can't get the Client IP { ip=Context.Request.ServerVariables["REMOTE_ADDR"].ToString(); //While it can't get the Client IP, it will return proxy IP. }
备注:
1. 有些代理是不会发给我们真实IP地址的
2. 有些客户端会因为“header_access deny”的安全设置而不发给我们IP