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WSGI HTTP Server for UNIX

Project description

grainbow ‘Green Rainbows’ is a WSGI HTTP Server for UNIX, for sleepy application. It’s based on Gunicorn but it’s designed to handle applications that expect long request/response times and/or slow clients. For other applications, you should use gunicorn, since it’s easier to debug.

Features

  • Designed for WSGI

  • Built on Gunicorn, inheriting its process/socket management features such as transparent upgrades and Python configuration DSL.

  • Decode chunked transfers on-the-fly, allowing upload progress notifications or stream-based protocols over HTTP

  • Support for Eventlet and Gevent .

Applications

Install

Grainbows requires Python 2.x superior to 2.5.

Install from sources:

$ python setup.py install

Or from Pypi:

$ easy_install -U grainbows

By default grainbows use Gunicorn arbiter, so you won’t have any benefits. You need to install Eventlet or Gevent to use concurrency features.

do:

$ easy_install -U eventlet

or:

$ easy_install -U gevent

Usage

for WSGI application:

To launch the example application packaged with Grainbows:

$ cd /path/to/grainbows/examples/
$ grainbows websocket:app

and then go on http://localhost:8000 to see the result.

Note : by default the configuration is set to use eventlet. If you want to test with gevent, edit grainbows.conf.py file and replace use=”eventlet” by use=”gevent”.

The module test_keepalive:app specifies the complete module name and WSGI callable. You can replace it with anything that is available on your PYTHONPATH like such:

$ cd ~/
$ grainbows -c /path/to/configfile.py awesomeproject.wsgi.main:main_app

For Django applications use the grainbows_django command line and for Paste compatible applications (Pylons, TurboGears 2, …) use grainbows_paste. See the usage page on Gunicorn website for more information.

Configuration file

A configuration file is needed to setup Grainbows specific settings. An example can be found here

use = "eventlet"
worker_connections = 1000

You can also configure other settings, see the Gunicorn configuration page for more details.

Development

You can get the source on Github :

http://github.com/benoitc/grainbows/

And send your feedback on the tracker .

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