关于获取来源IP地址的问题

[梅子]

String user_IP = "";
        if (Request.ServerVariables["HTTP_VIA"] != null)
        {
            user_IP = Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
        }
        else
        {
            user_IP = Request.ServerVariables["REMOTE_ADDR"].ToString();
        }
        Response.Write(user_IP);

以上代码的的user_IP会不会的例如：
187.73.48.82, 187.73.48.69, 187.73.48.69
这种现象产生？

[子夜__]

没懂啥意思。。

private string GetClientIP()
  {
  string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
  if (null == result || result == String.Empty)
  {
  result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
  }

  if (null == result || result == String.Empty)
  {
  result = HttpContext.Current.Request.UserHostAddress;
  }
  return result;
  }

[LMAOhuaNL]

//获取客户端IP
private string GetClientIP()
{
string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (null == result || result == String.Empty)
{
result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}

if (null == result || result == String.Empty)
{
result = HttpContext.Current.Request.UserHostAddress;
}
return result;
}


或者


if(Context.Request.ServerVariables["HTTP_VIA"]!=null) // 服务器， using proxy
{
得到真实的客户端地址
ip=Context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString(); // Return real client IP.
}
else//如果没有使用代理服务器或者得不到客户端的ip not using proxy or can't get the Client IP
{

得到服务端的地址
ip=Context.Request.ServerVariables["REMOTE_ADDR"].ToString(); //While it can't get the Client IP, it will return proxy IP.
}

[小阳]

不会的，它会直接获取当前的网络IP，如果联网的话，不然就获得本地：127.0.0.1

[我TM真的是猪]

string ip = Request.UserHostAddress;
如果你想换行就加"\r\n"。