waitress

Waitress is meant to be a production-quality pure-Python WSGI server with very acceptable performance. It has no dependencies except ones which live in the Python standard library. It runs on CPython on Unix and Windows under Python 3.7+. It is also known to run on PyPy 3 (python version 3.7+) on UNIX. It supports HTTP/1.0 and HTTP/1.1. Waitress now validates that chunked encoding extensions are valid, and don't contain invalid characters that are not allowed. They are still skipped/not processed, but if they contain invalid data we no longer continue in and return a 400 Bad Request. This stops potential HTTP desync/HTTP request smuggling.

Features

Production-quality pure-Python WSGI server
Very acceptable performance
It has no dependencies except ones which live in the Python standard library
It runs on CPython on Unix and Windows under Python 3.7+
It also runs on PyPy 3
It supports HTTP/1.0 and HTTP/1.1

Project Samples

Project Activity

See All Activity >

License

MIT License

Follow waitress

waitress Web Site

Other Useful Business Software

Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.

Try Free

Rate This Project

User Reviews

Be the first to post a review of waitress!

Additional Project Details

Operating Systems

Linux, Windows

Programming Language

Python

Related Categories

Python HTTP Servers

Registered

2023-05-10

Similar Business Software

Tornado Web Server

Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived...

See Software
Jaisocx

Since 2024 Jaisocx supports PHP over HTTP/3, intuitively switching among HTTP/1.1, h2 and h3 depending on negotiation with HTTP client. a) Unique feature is Charset detection of published text contents, and making browser showing correctly extended ascii chars like in German or French alphabets....

See Software
Gunicorn

Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resources, and fairly speedy.

See Software
Node.js

As an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications. Upon each connection, the callback is fired, but if there is no work to be done, Node.js will sleep. This is in contrast to today's more common concurrency model, in which OS threads...

See Software
Apache HTTP Server

The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards.

See Software
Kestrel

Kestrel is a cross-platform web server for ASP.NET Core. Kestrel is the web server that's included and enabled by default in ASP.NET Core project templates. Kestrel supports HTTPS, HTTP/2 (except on macOS), Opaque upgrade used to enable WebSockets, Unix sockets for high performance behind Nginx....

See Software