.net获取IP地址的几种方法
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"];
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;
}
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;
}
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.
}
{
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