eagle0/nginx/nginx.conf

events {
    worker_connections 1024;
}

http {
    # Logging
    log_format grpc_json escape=json '{'
        '"time":"$time_iso8601",'
        '"client":"$remote_addr",'
        '"uri":"$uri",'
        '"status":$status,'
        '"grpc_status":"$sent_http_grpc_status",'
        '"request_time":$request_time,'
        '"upstream_time":"$upstream_response_time"'
    '}';

    access_log /var/log/nginx/access.log grpc_json;
    error_log /var/log/nginx/error.log warn;

    # Rate limiting zone
    limit_req_zone $binary_remote_addr zone=grpc_limit:10m rate=100r/s;

    # Upstream for Eagle gRPC server
    upstream eagle_grpc {
        server eagle:40032;
        keepalive 100;
    }

    # HTTP server for Let's Encrypt challenge and redirect
    server {
        listen 80;
        server_name eagle0.net;

        # Let's Encrypt challenge
        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        # Redirect all other HTTP to HTTPS
        location / {
            return 301 https://$host$request_uri;
        }
    }

    # HTTPS server for gRPC
    server {
        listen 443 ssl;
        http2 on;
        server_name eagle0.net;

        # SSL certificates (managed by certbot)
        ssl_certificate /etc/letsencrypt/live/eagle0.net/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/eagle0.net/privkey.pem;

        # SSL configuration
        ssl_protocols TLSv1.2 TLSv1.3;
        ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
        ssl_prefer_server_ciphers off;
        ssl_session_timeout 1d;
        ssl_session_cache shared:SSL:10m;
        ssl_session_tickets off;

        # gRPC proxy for Eagle service
        location /net.eagle0.eagle.api.Eagle {
            # Rate limiting
            limit_req zone=grpc_limit burst=50 nodelay;

            # gRPC proxy
            grpc_pass grpc://eagle_grpc;

            # Timeouts for long-running streams
            grpc_read_timeout 1200s;
            grpc_send_timeout 1200s;
            grpc_socket_keepalive on;

            # Error handling
            error_page 502 = /error502grpc;
        }

        # Health check endpoint
        location /health {
            access_log off;
            return 200 "OK\n";
            add_header Content-Type text/plain;
        }

        # gRPC error handling
        location = /error502grpc {
            internal;
            default_type application/grpc;
            add_header grpc-status 14;
            add_header grpc-message "unavailable";
            return 204;
        }
    }
}