location @handle_redirect {
        resolver 223.5.5.5;
        set $saved_redirect_location '$upstream_http_location';
        # include firewall.conf;

    # 启用 sub_filter
            sub_filter 'link href=src/assets/' 'link href=/src/assets/';
            sub_filter 'script src=src/assets/' 'script src=/src/assets/';
            # 替换多次
            sub_filter_once off;

        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-Port $remote_port;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass $saved_redirect_location;
    }

    location  / {
        # include firewall.conf;


        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-Port $remote_port;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass https://xxxx.net;
        proxy_intercept_errors on;
        recursive_error_pages on;
        error_page 301 302 307 = @handle_redirect;
    }