Python Flask使用Nginx做代理時如何獲取真實IP

首先是Nginx的配置,需要在轉發的請求headers中設置好真實IP:

		location /path { 
		  proxy_pass http://127.0.0.1:5000/; 
		  proxy_set_header X-Real-IP $remote_addr; 
		  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
		}

然後在Flask中通過headers獲取IP:

ip = request.headers.get('X-Real-IP')

如果用戶使用了代理,獲取的IP是代理後的IP，就需要獲取上層IP。 通過X-Forwarded-For獲取IP的鏈路（結果是一個數組）,IP以逗號隔開：

ip = request.headers.get('X-Forwarded-For')

附上配置

	location /path/ {
			error_page 404 /404.html;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header X-Real-Ip $remote_addr;
			proxy_set_header X-Forwarded-Proto $scheme;
			proxy_set_header Host $http_host;
			proxy_redirect off;
			proxy_pass http://path;
			error_page 500 502 503 504 /50x.html;
	}

及查詢結果展示

	 return jsonify(code=RET.OK, msg={"remote_addr": request.remote_addr,
                                 "X-Real-Ip": request.headers.get("X-Real-Ip"),
                                 "X-Forwarded-For": request.headers.get("X-Forwarded-For"),
                                 "HOST":request.headers.get("Host"),
                                 "X-Forwarded-Proto":request.headers.get("X-Forwarded-Proto"),
                                 })
	{
		"code": "0",
		"msg": {
			"HOST": "www.baidu.com", # 域名
			"X-Forwarded-For": "123.116.240.31",
			"X-Forwarded-Proto": "http",
			"X-Real-Ip": "123.116.240.31",
			"remote_addr": "39.100.39.50"
	}