🌟 Asteri Web Server v1.1.1

Asteri is a high-performance, production-ready Python web server designed with a rich and intuitive CLI argument system. Asteri supports various protocols ranging from WSGI and ASGI to binary uWSGI.

✨ Key Features

• Multi-Protocol Support: HTTP/1.1, HTTP/2 (Full Frame Support), WSGI, ASGI, and uWSGI.
• Rich Worker Types:
  • sync: Standard synchronous workers.
  • gthread: Thread-based workers for better concurrency.
  • gevent: Asynchronous workers based on greenlets (extremely high performance).
  • asgi: Full support for modern async applications (FastAPI, Starlette).
• Professional Auto-Reload: Event-driven reload system using watchdog.
• Process Management: Daemon mode, PID files, and User/Group switching.
• Security: Easy-to-configure SSL/TLS (HTTPS) support.
• Premium Status Dashboard: Real-time server health monitoring at /asteri-status with a modern glassmorphism UI.
• Colored Access Logs: Visual feedback for HTTP status codes (2xx, 4xx, 5xx).

📊 Performance Benchmark

Asteri is built for speed. In local benchmarks, both Asteri (Sync) and Asteri (ASGI) outperformed Gunicorn and Uvicorn in throughput and latency.

Server Name	Type	RPS (Requests Per Second)	Latency (ms)
Asteri (Sync)	WSGI	23.71	2108.39
Asteri (ASGI)	ASGI	23.47	2130.29
Asteri (Gevent)	WSGI	22.84	2189.49
Uvicorn	ASGI	22.73	2199.27
Gunicorn (Sync)	WSGI	22.06	2266.41

Benchmark conducted with 1000 requests and 50 concurrent connections.

🚀 Installation

git clone https://github.com/IshikawaUta/asteri.git
cd asteri
pip install -e .

🛠️ Basic Usage

Run a WSGI application:

asteri myapp:app

Run with 4 workers and bind to multiple ports:

asteri myapp:app -w 4 -b 127.0.0.1:8000 -b 127.0.0.1:8001

📚 Running Examples

Asteri includes several examples to get you started with different frameworks and protocols.

Flask (WSGI)

Run with thread-based workers:

python3 -m asteri example_flask:app -k gthread -w 4 -b 127.0.0.1:8000

FastAPI (ASGI)

Run with modern async workers:

python3 -m asteri example_fastapi:app -k asgi -w 4 -b 127.0.0.1:8000

Production with Nginx (uWSGI)

Run Asteri in uWSGI mode (automatic detection) and use the provided example_uwsgi_nginx.conf:

python3 -m asteri example_wsgi:app -b 127.0.0.1:8000

📖 Complete CLI Reference

Asteri supports a wide range of arguments for professional-grade control:

🌐 Network

• -b, --bind ADDRESS: Bind to specific address (e.g., 127.0.0.1:8000). Supports multiple binds.
• --backlog INT: Maximum number of pending connections (default: 2048).
• --reuse-port: Use the SO_REUSEPORT socket flag for load balancing.

👷 Workers & Performance

• -w, --workers INT: Number of worker processes.
• -k, --worker-class STRING: Type of workers (sync, gthread, asgi, gevent).
• --threads INT: Number of worker threads for gthread worker class.
• --worker-connections INT: Maximum simultaneous clients per worker.
• -t, --timeout INT: Worker timeout in seconds before restart (default: 30).
• --graceful-timeout INT: Timeout for graceful worker shutdown.
• --keep-alive INT: Seconds to wait for requests on a Keep-Alive connection.
• --max-requests INT: Restart worker after N requests (prevents memory leaks).
• --max-requests-jitter INT: Add random jitter to max-requests.
• --preload: Load application code before forking workers (saves memory).

🔒 Security & SSL

• --certfile FILE: Path to SSL certificate file.
• --keyfile FILE: Path to SSL key file.
• --ca-certs FILE: Path to CA certificates file.
• --ssl-version INT: SSL version to use (TLSv1, TLSv1.1, TLSv1.2).
• --ciphers STRING: SSL Cipher suite to use.
• -u, --user USER: Run workers as a specific user.
• -g, --group GROUP: Run workers as a specific group.
• -m, --umask INT: Bit mask for file mode.

📝 Logging & Debugging

• --log-file FILE: Path to error log file.
• --log-level LEVEL: Log granularity (debug, info, warning, error, critical).
• --access-logfile FILE: Path to access log file.
• --access-logformat STRING: Custom format for access logs.
• --capture-output: Redirect stdout/stderr to the error log.
• --print-config: Print resolved configuration and exit.

⚙️ Process Management

• -D, --daemon: Run Asteri in the background.
• -p, --pid FILE: Create a PID file for process tracking.
• -n, --name STRING: Set a custom process name (visible in ps or top).
• -e, --env NAME=VALUE: Set environment variables.
• --reload: Monitor code changes and automatically reload workers.
• --chdir DIR: Change working directory before loading the app.

🚀 HTTP/2 & Limits

• --http-protocols STRING: Protocols to support (e.g., h1, h1,h2).
• --http2-max-concurrent-streams INT: Limit concurrent H2 streams.
• --limit-request-line INT: Max size of HTTP request line (default: 4094).
• --limit-request-fields INT: Max number of header fields.
• --limit-request-field_size INT: Max size of a single header field.

⚙️ Configuration File

You can use a Python file for complex configurations:

# asteri.conf.py
bind = ["127.0.0.1:8080", "127.0.0.1:8081"]
workers = 4
worker_class = "gthread"
timeout = 60
reload = True

Run with: asteri myapp:app -c asteri.conf.py

📊 Status Dashboard

Enable the internal dashboard to monitor worker statistics: Visit http://localhost:8000/asteri-status in your browser.

📜 License

This project is licensed under the MIT License.