ASP.NET获取IP的6种方法

//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"];

//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; 

}

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.

}