nginx.conf

worker_processes 1;
pid /home/node/nginx.pid;
error_log /var/log/nginx/error.log;

events {
    worker_connections 1024;
}

http {
    access_log /var/log/nginx/access.log;
    client_max_body_size 50m;

    # Temp paths writable by user
    client_body_temp_path /tmp/nginx_body;
    proxy_temp_path /tmp/nginx_proxy;
    fastcgi_temp_path /tmp/nginx_fastcgi;
    uwsgi_temp_path /tmp/nginx_uwsgi;
    scgi_temp_path /tmp/nginx_scgi;

    upstream omr_service {
        server 127.0.0.1:3080;
    }

    upstream cluster_server {
        server 127.0.0.1:3999;
    }

    server {
        listen 7860;

        # cluster-server routes: /api/score (singular, NOT /api/scores)
        location ~ ^/api/score(/|$) {
            proxy_pass http://cluster_server;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # WebSocket
        location /ws {
            proxy_pass http://omr_service;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
        }

        # Everything else goes to omr-service
        location / {
            proxy_pass http://omr_service;
            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_read_timeout 300s;
        }
    }
}