server {
    listen 80;
    listen [::]:80;
    server_name localhost default_server;
    client_max_body_size 200m;

    location / {
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, HEAD, PUT, DELETE, TRACE, CONNECT';
        add_header 'Access-Control-Allow-Headers' 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,X-Requested-With,token,terminalType';
        add_header 'Access-Control-Max-Age' 86400;
        add_header 'Content-Type' 'text/plain charset=UTF-8';

if ($request_method = 'OPTIONS') {
    add_header 'Access-Control-Allow-Origin' $http_origin always;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, HEAD, PUT, DELETE, TRACE, CONNECT';
    add_header 'Access-Control-Allow-Headers' 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,X-Requested-With,token,terminalType';
    add_header 'Access-Control-Max-Age' 86400;
    add_header 'Content-Length' 0;
    return 204;
}   

        if ($request_filename ~* .*\.(?:htm|html)$) {
            add_header Cache-Control "no-store";
        }
        root /usr/share/nginx/html;
        try_files $uri @index ;
    }
    
    location @index {
        add_header Cache-Control "no-store" ;
        root /usr/share/nginx/html;
        index index.html index.htm;
        try_files $uri/index.html /index.html;
    }

    error_page 405 =200 $uri;
}