File: README.rst

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==========================
 The Python Dugong Module
==========================

.. default-role:: code

.. start-intro

The Python Dugong module provides an API for communicating with HTTP
1.1 servers. It is an alternative to the standard library's
`http.client` (formerly *httplib*) module. In contrast to
`http.client`, Dugong:

- allows you to send multiple requests right after each other without
  having to read the responses first.

- supports waiting for 100-continue before sending the request body.

- raises an exception instead of silently delivering partial data if the
  connection is closed before all data has been received.

- raises one specific exception (`ConnectionClosed`) if the connection
  has been closed (while `http.client` connection may raise any of
  `BrokenPipeError`, `~http.client.BadStatusLine`,
  `ConnectionAbortedError`, `ConnectionResetError`,
  `~http.client.IncompleteRead` or simply return ``''`` on read)

- supports non-blocking, asynchronous operation and is compatible with
  the asyncio_ module.

- can in most cases distinguish between an unavailable DNS server and
  an unresolvable hostname.

- is not compatible with old HTTP 0.9 or 1.0 servers.

All request and response headers are represented as `str`, but must be
encodable in latin1. Request and response body must be `bytes-like
objects`_ or binary streams.

Dugong requires Python 3.3 or newer.

.. _`bytes-like objects`: http://docs.python.org/3/glossary.html#term-bytes-like-object
.. _asyncio: http://docs.python.org/3.4/library/asyncio.html


Installation
============

As usual: download the tarball from PyPi_, extract it, and run ::

  # python3 setup.py install [--user]

To run the self-tests, install `py.test`_ with the `pytest-catchlog`_
plugin and run ::

  # python3 -m pytest test/

.. _PyPi: https://pypi.python.org/pypi/dugong/#downloads
.. _py.test: http://www.pytest.org/
.. _pytest-catchlog: https://github.com/eisensheng/pytest-catchlog


Getting Help
============

The documentation can be `read online`__ and is also included in the
*doc/html* directory of the dugong tarball.

Please report any bugs on the `issue tracker`_. For discussion and
questions, please subscribe to the `dugong mailing list`_.

.. __: http://www.rath.org/dugong-docs/
.. _dugong mailing list: https://groups.google.com/d/forum/python-dugong
.. _`issue tracker`: https://github.com/python-dugong/python-dugong/issues


Development Status
==================

The Dugong API is not yet stable and may change from one release to
the other. Starting with version 3.5, Dugong uses semantic
versioning. This means changes in the API will be reflected in an
increase of the major version number, i.e. the next
backwards-incompatible version will be 4.0. Projects designed for
e.g. version 3.5 of Dugong are thus recommended to declare a
dependency on ``dugong >= 3.5, < 4.0``.


Contributing
============

The LLFUSE source code is available on GitHub_.

Professional Support
--------------------

Professional support is offered via `Rath Consulting`_.

.. _GitHub: https://github.com/python-dugong/python-dugong
.. _`Rath Consulting`: http://www.rath-consulting.biz/