nginx — spring-cloud-gateway — micro-service

upstream you_back_end{
    ip_hash;
    server 192.168.1.1:8083;
}

server {
    listen       80;
    server_name  localhost;
    #charset koi8-r;
    #access_log  logs/host.access.log  main;
  location / {
                          
                          proxy_set_header Host $host;
                          proxy_set_header X_Real_IP $remote_addr;
                          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                          add_header Access-Control-Allow-Origin $http_origin always;
                          add_header Access-Control-Allow-Headers 'DNT,web-token,app-token,Authorization,Accept,Origin,Keep-Alive,User-Agent,X-Mx-ReqToken,X-Data-Type,X-Auth-Token,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,username,token,*' always;
                          add_header Access-Control-Allow-Methods '*' always;
                          add_header Access-Control-Allow-Credentials true;

                          if ($request_method = 'OPTIONS') {
                              return 204;
                          }

                          proxy_pass http://you_back_end;

   }
}