map $http_upgrade $connection_upgrade {
        default upgrade;
        ‘‘ close;
}

upstream weoskceturl{
        server 127.0.0.1:9002;
}
server{
   listen       80;
   server_name  localhost;    
    location /api {
           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_pass http://weoskceturl/api;
        proxy_connect_timeout 4s;                
            proxy_read_timeout 60s;                  
            proxy_send_timeout 12s; 
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }
}