upstream ws_server {
    server 192.168.9.28:3000;
}

upstream pmdb_server {
    server 192.168.9.28:6066;
}

server {
    listen 3000;
    server_name  isproxy.stonethree.com;

    location / {
        proxy_pass  http://ws_server/;
        proxy_redirect off;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    location /object/ {
        proxy_pass http://pmdb_server;
        proxy_redirect off;
    }

    location /sensor/ {
        proxy_pass http://pmdb_server;
        proxy_redirect off;
    }

    location /plant/ {
        proxy_pass http://pmdb_server;
        proxy_redirect off;
    }
}