nginx.conf.example

events {
    worker_connections 1024;
}

http {
    upstream cae_backend {
        server cae:8000;
    }

    # Rate limiting
    limit_req_zone $binary_remote_addr zone=api_limit:10m rate=10r/s;
    
    # HTTP redirect to HTTPS
    server {
        listen 80;
        server_name your-domain.com;
        return 301 https://$server_name$request_uri;
    }

    # HTTPS server
    server {
        listen 443 ssl http2;
        server_name your-domain.com;

        # SSL configuration
        ssl_certificate /etc/nginx/ssl/cert.pem;
        ssl_certificate_key /etc/nginx/ssl/key.pem;
        ssl_protocols TLSv1.2 TLSv1.3;
        ssl_ciphers HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers on;

        # Security headers
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "no-referrer-when-downgrade" always;
        add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

        # Proxy settings
        location / {
            # Rate limiting
            limit_req zone=api_limit burst=20 nodelay;
            
            proxy_pass http://cae_backend;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection 'upgrade';
            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_cache_bypass $http_upgrade;
            
            # Timeouts
            proxy_connect_timeout 60s;
            proxy_send_timeout 600s;
            proxy_read_timeout 600s;
        }

        # Health check endpoint (no rate limiting)
        location /health {
            proxy_pass http://cae_backend/health;
            access_log off;
        }

        # Static files and uploads
        client_max_body_size 10M;
        
        # Gzip compression
        gzip on;
        gzip_vary on;
        gzip_min_length 1024;
        gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;
    }
}