nginx反向代理一段时间后竟然失效了

Question

需求上需要iframe嵌入台州天气网的界面，于是配置了反向代理，源地址：http://www.tz121.com/index.php
nginx配置：

server {
    # 【*】部署端口 - 注意不要和别的端口冲突
    listen 20005;
    # 【*】应用名称 - 注意不要和别的应用冲突
    server_name tzyj_web;
    root  D:/strongsoft/02_main/Web;

     # 【*】防止页面嵌套
    #add_header X-Frame-Options SAMEORIGIN;
    #large_client_header_buffers 4 10m;
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
    add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

    #文件最大大小
    client_max_body_size    1000m;

    # 天气信息
    location /tztq/ {
        proxy_set_header Accept-Encoding '';
        proxy_pass http://www.tz121.com/;
        sub_filter http://www.tz121.com/ /tztq/;
        sub_filter https://hm.baidu.com/ /hm_baidu/;
        sub_filter "http://webrd0{1-4}.is.autonavi.com/" "/webrd_0{1-4}/";
        sub_filter http://news.weather.com.cn /weather/;
        sub_filter_once off;
    }
    

    location / {
        proxy_set_header Host $http_host; 
        proxy_set_header X-Real-IP $remote_addr; 
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # 后台管理
        rewrite ^/admin   /pages/admin.html;

        # 展示页面
        rewrite ^[^\.]+$  /pages/index.html;

        # 默认定向
        #try_files $uri $uri/ /index.html;
    }
    
    # 以下用于进行重定向
    set $flag_second "0";

    # 判断请求是否从webapps.shui00.com/second这个地址发出的
    if ($http_referer ~* "http://122.226.177.37:8899/second/") {
        set $flag_second "${flag_second}1";
    }

    # 判断页面是否已经包含second这个虚拟目录了
    if ($request_uri !~* "second/") {
        set $flag_second "${flag_second}2";
    }

    # 如果请求不是get，不能用rewrite重定向，否则会导致请求变成get
    if ($request_method != GET) {
        set $flag_second "${flag_second}3";
    }

    # 将请求指向second这个虚拟目录
    if ($flag_second = "012") {
        rewrite ^(.*) $scheme://$host/second$1;
    }

    # 状态码307表示请求方法不变，页面会再次以post、delete、put发起请求
    if ($flag_second = "0123") {
        return 307 $scheme://$host/second$request_uri;
    }

出现的问题：
隔二十分钟左右，该代理就会失效，重启就能解决。

nginx报错：
2022/01/26 17:18:40 [error] 20296#19024: *473 connect() failed (10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond) while connecting to upstream, client: 172.26.222.122, server: tzyj_web, request: "GET /tztq/index.php HTTP/1.1", upstream: "http://36.134.58.187:80/index.php", host: "10.49.146.68:20005", referrer: "http://10.49.146.68:20005/17eh%22

Answer 1

页面超时了，自动退出登录了