nginx.conf

events {
    worker_connections 1024;
}

http {
    client_max_body_size 50M;

    upstream streamlit {
        server 127.0.0.1:8501;
    }

    upstream fastapi {
        server 127.0.0.1:7861;
    }

    server {
        listen 7860;

        # FastAPI — strip /api prefix and proxy to uvicorn
        location /api/ {
            rewrite ^/api/(.*) /$1 break;
            proxy_pass http://fastapi;
            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_set_header X-Forwarded-Proto $scheme;
            proxy_read_timeout 300s;
            proxy_connect_timeout 10s;
        }

        # Streamlit websocket (required for live updates)
        location /_stcore/stream {
            proxy_pass http://streamlit;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
            proxy_read_timeout 86400;
        }

        # Streamlit — everything else
        location / {
            proxy_pass http://streamlit;
            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_set_header X-Forwarded-Proto $scheme;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }
    }
}