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- per_app_allocation: move host port from 8001 to 28001. OrbStack reserves 8001 on macOS for vcom-tunnel which makes 'Bind: port already allocated' the default failure mode. - dirty_ttin_ttou: pin BASE_URL to 127.0.0.1 instead of 'localhost'. macOS resolves 'localhost' to ::1 first; Docker Desktop / OrbStack only forward host ports on IPv4 so the IPv6 attempt resets and the test fixture treats the service as unhealthy. - dirty_ttin_ttou: add setproctitle to the test image. The TTIN/TTOU tests count workers via 'pgrep -f dirty-worker', which only matches once gunicorn's util._setproctitle has actually renamed the processes.
Gunicorn
Gunicorn is maintained by volunteers. If it powers your production, please consider supporting us:
Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resource usage, and fairly speedy.
New in v25: Per-app worker allocation for dirty arbiters, HTTP/2 support (beta)!
Quick Start
pip install gunicorn
gunicorn myapp:app --workers 4
For ASGI applications (FastAPI, Starlette):
gunicorn myapp:app --worker-class asgi
Features
- WSGI support for Django, Flask, Pyramid, and any WSGI framework
- ASGI support for FastAPI, Starlette, Quart
- HTTP/2 support (beta) with multiplexed streams
- Dirty Arbiters (beta) for heavy workloads (ML models, long-running tasks)
- uWSGI binary protocol for nginx integration
- Multiple worker types: sync, gthread, gevent, eventlet, asgi
- Graceful worker process management
- Compatible with Python 3.9+
Documentation
Full documentation at https://gunicorn.org
Community
- Report bugs on GitHub Issues
- Chat in #gunicorn on Libera.chat
- See CONTRIBUTING.md for contribution guidelines
Support
Powering Python apps since 2010. Support continued development.
Sponsors
License
Gunicorn is released under the MIT License. See the LICENSE file for details.