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各种脚本语言获取客户端真实IP的方法
各种语言获取客户端真是ip的方法
1.PHP脚本获取客户端真实ip的方法
整体思路：需要依次检查HTTP_CLIENT_IP、HTTP_X_FORWARDED_FOR、REMOTE_ADDR这三个是否
存在，只要一旦有一个存在就结束
获取示例代码：
function GetIP(){
if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
$ip = getenv("REMOTE_ADDR");
else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
$ip = $_SERVER['REMOTE_ADDR'];
else
$ip = "unknown";
return($ip);
}
其中对获取ip的三个属性HTTP_VIA、HTTP_X_FORWARDED_FOR、REMOTE_ADDR在使用代理服务器时获取的情况
一、没有使用代理服务器的情况：
REMOTE_ADDR = 自己的真实IP
HTTP_VIA = 没数值或不显示
HTTP_X_FORWARDED_FOR = 没数值或不显示
二、使用Transparent Proxies（透明代理）服务器的情况
REMOTE_ADDR = 最后一个代理服务器IP
HTTP_VIA = 代理服务器IP
HTTP_X_FORWARDED_FOR = 自己的真实IP
三、使用Anonymous Proxies（匿名代理）服务器的情况
REMOTE_ADDR = 最后一个代理服务器IP
HTTP_VIA = 代理服务器IP
HTTP_X_FORWARDED_FOR = 代理服务器IP
四、使用Distorting Proxies（欺骗代理）服务器的情况：
REMOTE_ADDR = 代理服务器IP
HTTP_VIA = 代理服务器IP
HTTP_X_FORWARDED_FOR = 随机IP，经过多个代理服务器时，这个值类似如下：203.98.182.163, 203.98.182.163, 203.129.72.215。
五、使用Elite Proxies服务器的情况
REMOTE_ADDR = 代理服务器IP
HTTP_VIA = 没有数值或不显示
HTTP_X_FORWARDED_FOR = 没有数值或不显示，经过多个代理服务器时，这个值类似如下：203.98.182.163, 203.98.182.163, 203.129.72.215。
综上来看，PHP获取客户端真实IP的方法并不是能够百分之百成功的。
2.ASP脚本获取客户端真实ip的方法
获取的思路和PHP脚本的类似，也是通过判断HTTP_X_FORWARDED_FOR、REMOTE_ADDR来获取的
但是由于客户端使用代理服务器缘故，并不能保证100%能够获取客户端真实ip
Private Function getIP()
Dim strIPAddr
If Request.ServerVariables("HTTP_X_FORWARDED_FOR") = "" OR InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), "unknown") > 0 Then
strIPAddr = Request.ServerVariables("REMOTE_ADDR")
ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",") > 0 Then
strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",")-1)
ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ";") > 0 Then
strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ";")-1)
Else
strIPAddr = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
End If
getIP = Trim(Mid(strIPAddr, 1, 30))
End Function
3.C#获取客户端真实ip的方法
获取函数的思路类似，见如下代码：
public static string GetIPAddress()
{
string user_IP = string.Empty;
if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)
{
if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)
{
user_IP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
}
else
{
user_IP = System.Web.HttpContext.Current.Request.UserHostAddress;
}
}
else
{
user_IP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
}
return user_IP;
4.Java获取客户端真实ip的方法
package com.viathink.utils; //需要的Java包
import javax.servlet.http.HttpServletRequest ; //导入方法
public static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("X-Forwarded-For");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
}
5.Python获取客户端真实ip的方法
代码如下：
def get_client_ip(request):
try:
real_ip = request.META['HTTP_X_FORWARDED_FOR']
regip = real_ip.split(",")[0]
except:
try:
regip = request.META['REMOTE_ADDR']
except:
regip = ""
return regip
最后更新：2017-01-10 21:30:56