Changes
=======

py-amqp is fork of amqplib used by Kombu containing additional features and improvements.
The previous amqplib changelog is here:
http://code.google.com/p/py-amqplib/source/browse/CHANGES


.. _version-5.3.0:

5.3.0
=====
:release-date: 2024-11-12
:release-by: Tomer Nosrati

- Hard-code requests version because of the bug in docker-py (#432)
- fix AbstractTransport repr socket error (#361) (#431)
- blacksmith.sh: Migrate workflows to Blacksmith (#436)
- Added Python 3.13 to CI (#440)
- Prepare for release: 5.3.0 (#441)


.. _version-5.2.0:

5.2.0
=====
:release-date: 2023-11-06 10:55 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Added python 3.12 and drop python 3.7 (#423).
- Test vine 5.1.0 (#424).
- Set an explicit timeout on SSL handshake to prevent hangs.
- Add MessageNacked to recoverable errors.
- Send heartbeat frames more often.


.. _version-5.1.1:

5.1.1
=====
:release-date: 2022-04-17 12:45 P.M. UTC+6:00
:release-by: Asif Saif Uddin

- Use AF_UNSPEC for name resolution (#389).


.. _version-5.1.0:

5.1.0
=====
:release-date: 2022-03-06 10:05 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Improve performance of _get_free_channel_id, fix channel max bug (#385).
- Document memoryview usage, minor frame_writer.write_frame refactor (#384).
- Start dropping python 3.6 (#387).
- Added experimental __slots__ to some classes (#368)
- Relaxed vine version for upcoming release.
- Upgraded topytest 7 (#388).


.. _version-5.0.9:

5.0.9
=====
:release-date: 2021-12-20 11:00 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Append to _used_channel_ids in _used_channel_ids


.. _version-5.0.8:

5.0.8
=====
:release-date: 2021-12-19 11:15 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Reduce memory usage of Connection (#377)
- Add additional error handling around code where an OSError
  may be raised on failed connections. Fixes (#378)


.. _version-5.0.7:

5.0.7
=====
:release-date: 2021-12-13 15:45 P.M. UTC+6:00
:release-by: Asif Saif Uddin

- Remove dependency to case
- Bugfix: not closing socket after server disconnect


.. _version-5.0.6:

5.0.6
=====
:release-date: 2021-04-01 10:45 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Change the order in which context.check_hostname and context.verify_mode get set
  in SSLTransport._wrap_socket_sni. Fixes bug introduced in 5.0.3 where setting
  context.verify_mode = ssl.CERT_NONE would raise
  "ValueError: Cannot set verify_mode to CERT_NONE when check_hostname is enabled."
  Setting context.check_hostname prior to setting context.verify_mode resolves the
  issue.
- Remove TCP_USER_TIMEOUT option for Solaris (#355)
- Pass long_description to setup() (#353)
- Fix for tox-docker 2.0
- Moved to GitHub actions CI (#359)

.. _version-5.0.5:

5.0.5
=====
:release-date: 2021-01-28 4:30 P.M UTC+6:00
:release-by: Asif Saif Uddin

-  Removed mistakenly introduced code which was causing import errors



.. _version-5.0.4:

5.0.4
=====
:release-date: 2021-01-28 2:30 P.M UTC+6:00
:release-by: Asif Saif Uddin

-  Add missing load_default_certs() call to fix a regression in v5.0.3 release. (#350)


.. _version-5.0.3:

5.0.3
=====
:release-date: 2021-01-19 9:00 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Change the default value of ssl_version to None. When not set, the
  proper value between ssl.PROTOCOL_TLS_CLIENT and ssl.PROTOCOL_TLS_SERVER
  will be selected based on the param server_side in order to create
  a TLS Context object with better defaults that fit the desired
  connection side.

- Change the default value of cert_reqs to None. The default value
  of ctx.verify_mode is ssl.CERT_NONE, but when ssl.PROTOCOL_TLS_CLIENT
  is used, ctx.verify_mode defaults to ssl.CERT_REQUIRED.

- Fix context.check_hostname logic. Checking the hostname depends on
  having support of the SNI TLS extension and being provided with a
  server_hostname value. Another important thing to mention is that
  enabling hostname checking automatically sets verify_mode from
  ssl.CERT_NONE to ssl.CERT_REQUIRED in the stdlib ssl and it cannot
  be set back to ssl.CERT_NONE as long as hostname checking is enabled.

- Refactor the SNI tests to test one thing at a time and removing some
  tests that were being repeated over and over.



.. _version-5.0.2:

5.0.2
=====
:release-date: 2020-11-08 6:50 P.M UTC+3:00
:release-by: Omer Katz

- Whhels are no longer universal.

  Contributed by **Omer Katz**

- Added debug representation to Connection and *Transport classes

  Contributed by **Matus Valo**

- Reintroduce ca_certs and ciphers parameters of SSLTransport._wrap_socket_sni()

  This fixes issue introduced in commit: 53d6777

  Contributed by **Matus Valo**

- Fix infinite wait when using confirm_publish

  Contributed by **Omer Katz** & **RezaSi**

.. _version-5.0.1:

5.0.1
=====
:release-date: 2020-09-06 6:10 P.M UTC+3:00
:release-by: Omer Katz

- Require vine 5.0.0.

  Contributed by **Omer Katz**

.. _version-5.0.0:

5.0.0
=====
:release-date: 2020-09-03 3:20 P.M UTC+3:00
:release-by: Omer Katz

- Stop to use deprecated method ssl.wrap_socket.

  Contributed by **Hervé Beraud**

.. _version-5.0.0b1:

5.0.0b1
=======
:release-date: 2020-09-01 6:20 P.M UTC+3:00
:release-by: Omer Katz

- Dropped Python 3.5 support.

  Contributed by **Omer Katz**

- Removed additional compatibility code.

  Contributed by **Omer Katz**

.. _version-5.0.0a1:

5.0.0a1
=======
:release-date: 2019-04-01 4:30 P.M UTC+3:00
:release-by: Omer Katz

- Dropped Python 2.x support.

  Contributed by **Omer Katz**

- Dropped Python 3.4 support.

  Contributed by **Omer Katz**

- Depend on :pypi:`vine` 5.0.0a1.

  Contributed by **Omer Katz**

Code Cleanups & Improvements:

  - **Omer Katz**


.. _version-2.6.0:

2.6.1
=====
:release-date: 2020-07-31 10.30 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Fix buffer overflow in frame_writer after frame_max is increased. `frame_writer`
allocates a `bytearray` on initialization with a length based on the `connection.frame_max`
value. If `connection.frame_max` is changed to a larger value, this causes an
error like `pack_into requires a buffer of at least 408736 bytes`.


.. _version-2.6.0:

2.6.0
=====
:release-date: 20-06-01 12.00 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Implement speedups in cython (#311)
- Updated some tests & code improvements
- Separate logger for Connection.heartbeat_tick method
- Cython generic content (#315)
- Improve documentation a_global parameter of basic_qos() method.
- Fix saving partial read buffer on windows during socket timeout. (#321)
- Fix deserialization of long string field values that are not utf-8.
- Added simple cythonization of abstract_channel.py
- Speedups of serialization.py are more restrictive

.. _version-2.5.2:

2.5.2
=====
:release-date: 2019-09-30 19.00 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Fixed a channel issue against a connection already closed
- Updated some tests & code improvements


.. _version-2.5.1:

2.5.1
=====
:release-date: 2019-08-14 22.00 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Ignore all methods except Close and Close-OK when channel/connection is closing
- Fix faulty ssl sni intiation parameters (#283)
- Undeprecate auto_delete flag for exchanges. (#287)
- Improved tests and testing environments


.. _version-2.5.0:

2.5.0
=====
:release-date: 2019-05-30 17.30 P.M UTC+6:00
:release-by: Asif Saif Uddin

- Drop Python 3.4
- Add new platform
- Numerious bug fixes
.. _version-2.4.2:

2.4.2
=====
:release-date: 2019-03-03 10:45 P.M UTC+2:00
:release-by: Omer Katz

- Added support for the Cygwin platform

  Contributed by **Matus Valo**

- Correct offset incrementation when parsing bitmaps.

  Contributed by **Allan Simon** & **Omer Katz**

- Consequent bitmaps are now parsed correctly.

  Previously the bit counter was reset with every bit.
  We now reset it once per 8 bits, when we consume the next byte.

  Contributed by **Omer Katz**

Code Cleanups & Improvements:

  - **Patrick Cloke**
  - **Matus Valo**
  - **Jeremiah Cooper**
  - **Omer Katz**

Test Coverage & CI Improvements:

  - **Matus Valo**
  - **Omer Katz**
  - **Jeremiah Cooper**
  - **Omer Katz**

.. _version-2.4.1:

2.4.1
=====
:release-date: 2018-04-02 9:00 A.M UTC+2
:release-by: Omer Katz

- To avoid breaking the API basic_consume() now returns the consumer tag
  instead of a tuple when nowait is True.

  Fix contributed by **Matus Valo**

- Fix crash in basic_publish when broker does not support connection.blocked
  capability.

  Fix contributed by **Matus Valo**

- read_frame() is now Python 3 compatible for large payloads.

  Fix contributed by **Antonio Ojea**

- Support float read_timeout/write_timeout.

  Fix contributed by **:github_user:`cadl`**

- Always treat SSLError timeouts as socket timeouts.

  Fix contributed by **Dirk Mueller** and **Antonio Ojea**

- Treat EWOULDBLOCK as timeout.

  This fixes a regression on Windows from 2.4.0.

  Fix contributed by **Lucian Petrut**

Test Coverage & CI Improvements:

- **Matus Valo**
- **Antonio Ojea**

.. _version-2.4.0:

2.4.0
=====
:release-date: 2018-13-01 1:00 P.M UTC+2
:release-by: Omer Katz

- Fix inconsistent frame_handler return value.

  The function returned by frame_handler is meant to return True
  once the complete message is received and the callback is called,
  False otherwise.

  This fixes the return value for messages with a body split across
  multiple frames, and heartbeat frames.

  Fix contributed by **:github_user:`evanunderscore`**

- Don't default content_encoding to utf-8 for bytes.

  This is not an acceptable default as the content may not be
  valid utf-8, and even if it is, the producer likely does not
  expect the message to be decoded by the consumer.

  Fix contributed by **:github_user:`evanunderscore`**

- Fix encoding of messages with multibyte characters.

  Body length was previously calculated using string length,
  which may be less than the length of the encoded body when
  it contains multibyte sequences. This caused the body of
  the frame to be truncated.

  Fix contributed by **:github_user:`evanunderscore`**

- Respect content_encoding when encoding messages.

  Previously the content_encoding was ignored and messages
  were always encoded as utf-8. This caused messages to be
  incorrectly decoded if content_encoding is properly respected
  when decoding.

  Fix contributed by **:github_user:`evanunderscore`**

- Fix AMQP protocol header for AMQP 0-9-1.

  Previously it was set to a different value for unknown reasons.

  Fix contributed by **Carl Hörberg**

- Add support for Python 3.7.

  Change direct SSLSocket instantiation with wrap_socket.
  Added Python 3.7 to CI.

  Fix contributed by **Omer Katz** and **:github_user:`avborhanian`**

- Add support for field type "x" (byte array).

  Fix contributed by **Davis Kirkendall**

- If there is an exception raised on Connection.connect or Connection.close,
  ensure that the underlying transport socket is closed.

  Adjust exception message on connection errors as well.

  Fix contributed by **:github_user:`tomc797`**

- TCP_USER_TIMEOUT has to be excluded from KNOWN_TCP_OPTS in BSD platforms.

  Fix contributed by **George Tantiras**

- Handle negative acknowledgments.

  Fix contributed by **Matus Valo**

- Added integration tests.

  Fix contributed by **Matus Valo**

- Fix basic_consume() with no consumer_tag provided.

  Fix contributed by **Matus Valo**

- Improved empty AMQPError string representation.

  Fix contributed by **Matus Valo**

- Drain events before publish.

  This is needed to capture out of memory messages for clients that only
  publish. Otherwise on_blocked is never called.

  Fix contributed by **Jelte Fennema** and **Matus Valo**

- Don't revive channel when connection is closing.

  When connection is closing don't raise error when Channel.Close method is received.

  Fix contributed by **Matus Valo**

.. _version-2.3.2:

2.3.2
=====
:release-date: 2018-05-29 15:30 P.M UTC+3
:release-by: Omer Katz

- Fix a regression that occurs when running amqp on OSX.

  TCP_USER_TIMEOUT is not available when running on OSX.
  We now remove it from the set of known TCP options.

  Fix contributed by **Ofer Horowitz**

.. _version-2.3.1:

2.3.1
=====
:release-date: 2018-05-28 16:30 P.M UTC+3
:release-by: Omer Katz

- Fix a regression that occurs when running amqp under Python 2.7.

  #182 mistakenly replaced a type check with unicode to string_t which is str
  in Python 2.7. text_t should have been used instead.
  This is now fixed and the tests have been adjusted to ensure this never regresses
  again.

  Fix contributed by **Omer Katz**

.. _version-2.3.0:

2.3.0
=====
:release-date: 2018-05-27 16:30 P.M UTC+3
:release-by: Omer Katz

- Cleanup TCP configurations across platforms and unified defaults.

  Fix contributed by **Dan Chowdhury**

- Fix for TypeError when setting socket options.

  Fix contributed by **Matthias Erll**

- Ensure that all call sites for decoding bytes to str allow surrogates,
  as the encoding mechanism now supports.

  Fix contributed by **Stephen Hatch**

- Don't send AAAA DNS request when domain resolved to IPv4 address.

  Fix contributed by **Ihar Hrachyshka & Omer Katz**

- Support for EXTERNAL authentication and specific login_method.

  Fix contributed by **Matthias Erll**

- If the old python-gssapi library is installed the gssapi module will be available.
  We now ensure that we only use the new gssapi library.

  Fix contributed by **Jacopo Notarstefano**

Code Cleanups & Test Coverage:

- :github_user:`eric-eric-eric`
- **Omer Katz**
- **Jon Dufresne**
- **Matthias Urlichs**

.. _version-2.2.2:

2.2.2
=====
:release-date: 2017-09-14 09:00 A.M UTC+2
:release-by: Omer Katz

- Sending empty messages no longer hangs. Instead an empty message is sent correctly.(addresses #151)

  Fix contributed by **Christian Blades**

- Fixed compatibility issues in UTF-8 encoding behavior between Py2/Py3 (#164)

  Fix contributed by **Tyler James Harden**

.. _version-2.2.1:

2.2.1
=====
:release-date: 2017-07-14 09:00 A.M UTC+2
:release-by: Omer Katz

- Fix implicit conversion from bytes to string on the connection object. (Issue #155)

  This issue has caused Celery to crash on connection to RabbitMQ.

  Fix contributed by **Omer Katz**

.. _version-2.2.0:

2.2.0
=====
:release-date: 2017-07-12 10:00 A.M UTC+2
:release-by: Ask Solem

- Fix random delays in task execution.

  This is a bug that caused performance issues due to polling timeouts that occur when receiving incomplete AMQP frames. (Issues #3978 #3737 #3814)

  Fix contributed by **Robert Kopaczewski**

- Calling ``conn.collect()`` multiple times will no longer raise an ``AttributeError`` when no channels exist.

  Fix contributed by **Gord Chung**

- Fix compatibility code for Python 2.7.6.

  Fix contributed by **Jonathan Schuff**

- When running in Windows, py-amqp will no longer use the unsupported TCP option TCP_MAXSEG.

  Fix contributed by **Tony Breeds**

- Added support for setting the SNI hostname header.

  The SSL protocol version is now set to SSLv23

  Contributed by **Dhananjay Sathe**

- Authentication mechanisms were refactored to be more modular. GSSAPI authentication is now supported.

  Contributed by **Alexander Dutton**

- Do not reconnect on collect.

  Fix contributed by **Gord Chung**

.. _version-2.1.4:

2.1.4
=====
:release-date: 2016-12-14 03:40 P.M PST
:release-by: Ask Solem

- Removes byte string comparison warnings when running under ``python -b``.

    Fix contributed by **Jon Dufresne**.

- Linux version parsing broke when the version included a '+' character
  (Issue #119).

- Now sets default TCP settings for platforms that support them (e.g. Linux).

    +----------------------+---------------+
    |   Constant           |   Value       |
    +======================+===============+
    | ``TCP_KEEPIDLE``     | ``60``        |
    +----------------------+---------------+
    | ``TCP_KEEPINTVL``    | ``10``        |
    +----------------------+---------------+
    | ``TCP_KEEPCNT``      | ``9``         |
    +----------------------+---------------+
    | ``TCP_USER_TIMEOUT`` | ``1000`` (1s) |
    +----------------------+---------------+

    This will help detecting the socket being closed earlier, which is very
    important in failover and load balancing scenarios.

.. _version-2.1.3:

2.1.3
=====
:release-date: 2016-12-07 06:00 P.M PST
:release-by: Ask Solem

- Fixes compatibility with Python 2.7.5 and below (Issue #107).

.. _version-2.1.2:

2.1.2
=====
:release-date: 2016-12-07 02:00 P.M PST

- Linux: Now sets the :data:`~socket.TCP_USER_TIMEOUT` flag if available
  for better failed connection detection.

    Contributed by **Jelte Fennema**.

    The timeout is set to the ``connect_timeout`` value by default,
    but can also be specified by using the ``socket_settings`` argument
    to :class:`~amqp.Connection`:

    .. code-block:: python

        from amqp import Connection
        from amqp.platform import TCP_USER_TIMEOUT

        conn = Connection(socket_settings={
            TCP_USER_TIMEOUT: int(60 * 1000),  # six minutes in ms.
        })

    When using :pypi:`Kombu` this can be specified as part of the
    ``transport_options``:

    .. code-block:: python

        from amqp.platform import TCP_USER_TIMEOUT
        from kombu import Connection

        conn = Connection(transport_options={
            'socket_settings': {
                TCP_USER_TIMEOUT: int(60 * 1000),  # six minutes in ms.
            },
        })

    Or when using :pypi:`Celery` it can be specified using the
    ``broker_transport_options`` setting:

    .. code-block:: python

        from amqp.platform import TCP_USER_TIMEOUT
        from celery import Celery

        app = Celery()
        app.conf.update(
            broker_transport_options={
                TCP_USER_TIMEOUT: int(60 * 1000),  # six minutes in ms.
            }
        )

- Python compatibility: Fixed compatibility when using the python ``-b`` flag.

    Fix contributed by Jon Dufresne.

.. _version-2.1.1:

2.1.1
=====
:release-date: 2016-10-13 06:36 P.M PDT
:release-by: Ask Solem

.. _version-2.1.0:

- **Requirements**

    - Now depends on :ref:`Vine 1.1.3 <vine:version-1.1.3>`.

- Frame writer: Account for overhead when calculating frame size.

    The client would crash if the message was within a certain size.

-  Fixed struct unicode problems (#108)

    * Standardize pack invocations on bytestrings.

    * Leave some literals as strings to enable interpolation.

    * Fix flake8 fail.

    Fix contributed by **Brendan Smithyman**.


2.1.0
=====
:release-date: 2016-09-07 04:23 P.M PDT
:release-by: Ask Solem

- **Requirements**

    - Now depends on :ref:`Vine 1.1.2 <vine:version-1.1.2>`.

- Now licensed under the BSD license!

    Thanks to Barry Pederson for approving the license change,
    which unifies the license used across all projects in the Celery
    organization.

- Datetimes in method frame arguments are now handled properly.

- Fixed compatibility with Python <= 2.7.6

- Frame_writer is no longer a generator, which should solve
  a rare "generator already executing" error (Issue #103).

.. _version-2.0.3:

2.0.3
=====
:release-date: 2016-07-11 08:00 P.M PDT
:release-by: Ask Solem

- SSLTransport: Fixed crash "no attribute sslopts" when ``ssl=True``
  (Issue #100).

- Fixed incompatible argument spec for ``Connection.Close`` (Issue #45).

    This caused the RabbitMQ server to raise an exception (INTERNAL ERROR).

- Transport: No longer implements `__del__` to make sure gc can collect
  connections.

    It's the responsibility of the caller to close connections, this was
    simply a relic from the amqplib library.

.. _version-2.0.2:

2.0.2
=====
:release-date: 2016-06-10 5:40 P.M PDT
:release-by: Ask Solem

- Python 3: Installation requirements ended up being a generator
  and crashed setup.py.

    Fix contributed by ChangBo Guo(gcb).

- Python <= 2.7.7: struct.pack arguments cannot be unicode

    Fix contributed by Alan Justino and Xin Li.

- Python 3.4: Fixed use of `bytes % int`.

    Fix contributed by Alan Justino.

- Connection/Transport: Fixed handling of default port.

    Fix contributed by Quentin Pradet.

.. _version-2.0.1:

2.0.1
=====
:release-date: 2016-05-31 6:20 P.M PDT
:release-by: Ask Solem

- Adds backward compatibility layer for the 1.4 API.

    Using the connection without calling ``.connect()`` first will now work,
    but a warning is emitted and the behavior is deprecated and will be
    removed in version 2.2.

- Fixes kombu 3.0/celery 3.1 compatibility (Issue #88).

    Fix contributed by Bas ten Berge.

- Fixed compatibility with Python 2.7.3 (Issue #85)

    Fix contributed by Bas ten Berge.

- Fixed bug where calling drain_events() with a timeout of 0 would actually
  block until a frame is received.

- Documentation moved to http://amqp.readthedocs.io (Issue #89).

    See https://blog.readthedocs.com/securing-subdomains/ for the reasoning
    behind this change.

    Fix contributed by Adam Chainz.

.. _version-2.0.0:

2.0.0
=====
:release-date: 2016-05-26 1:44 P.M PDT
:release-by: Ask Solem

- No longer supports Python 2.6

- You must now call Connection.connect() to establish the connection.

    The Connection constructor no longer has side effects, so you have
    to explicitly call connect first.

- Library rewritten to anticipate async changes.

- Connection now exposes underlying socket options.

    This change allows to set arbitrary TCP socket options during the creation of
    the transport.

    Those values can be set passing a dictionray where the key is the name of
    the parameter we want to set.
    The names of the keys are the ones reported above.

    Contributed by Andrea Rosa, Dallas Marlow and Rongze Zhu.

- Additional logging for heartbeats.

    Contributed by Davanum Srinivas, and Dmitry Mescheryakov.

- SSL: Fixes issue with remote connection hanging

    Fix contributed by Adrien Guinet.

- SSL: ``ssl`` dict argument now supports the ``check_hostname`` key
    (Issue #63).

    Contributed by Vic Kumar.

- Contributions by:

    Adrien Guinet
    Andrea Rosa
    Artyom Koval
    Corey Farwell
    Craig Jellick
    Dallas Marlow
    Davanum Srinivas
    Federico Ficarelli
    Jared Lewis
    Rémy Greinhofer
    Rongze Zhu
    Yury Selivanov
    Vic Kumar
    Vladimir Bolshakov
    :github_user:`lezeroq`

.. _version-1.4.9:

1.4.9
=====
:release-date: 2016-01-08 5:50 P.M PST
:release-by: Ask Solem

- Fixes compatibility with Linux/macOS instances where the ``ctypes`` module
  does not exist.

    Fix contributed by Jared Lewis.

.. _version-1.4.8:

1.4.8
=====
:release-date: 2015-12-07 12:25 A.M
:release-by: Ask Solem

- ``abstract_channel.wait`` now accepts a float `timeout` parameter expressed
    in seconds

    Contributed by Goir.

.. _version-1.4.7:

1.4.7
=====
:release-date: 2015-10-02 05:30 P.M PDT
:release-by: Ask Solem

- Fixed libSystem error on macOS 10.11 (El Capitan)

    Fix contributed by Eric Wang.

- ``channel.basic_publish`` now raises :exc:`amqp.exceptions.NotConfirmed` on
    ``basic.nack``.

- AMQP timestamps received are now converted from GMT instead of local time
    (Issue #67).

- Wheel package installation now supported by both Python 2 and Python3.

    Fix contributed by Rémy Greinhofer.

.. _version-1.4.6:

1.4.6
=====
:release-date: 2014-08-11 06:00 P.M UTC
:release-by: Ask Solem

- Now keeps buffer when socket times out.

    Fix contributed by Artyom Koval.

- Adds ``Connection.Transport`` attribute that can be used to specify
  a different transport implementation.

    Contributed by Yury Selivanov.

.. _version-1.4.5:

1.4.5
=====
:release-date: 2014-04-15 09:00 P.M UTC
:release-by: Ask Solem

- Can now deserialize more AMQP types.

    Now handles types ``short string``, ``short short int``,
    ``short short unsigned int``, ``short int``,  ``short unsigned int``,
    ``long unsigned int``,  ``long long int``, ``long long unsigned int``
    and ``float`` which for some reason was missing, even in the original
    amqplib module.

- SSL: Workaround for Python SSL bug.

    A bug in the python socket library causes ``ssl.read/write()``
    on a closed socket to raise :exc:`AttributeError` instead of
    :exc:`IOError`.

    Fix contributed by Craig Jellick.

- ``Transport.__del_`` now handles errors occurring at late interpreter
  shutdown (Issue #36).

.. _version-1.4.4:

1.4.4
=====
:release-date: 2014-03-03 04:00 P.M UTC
:release-by: Ask Solem

- SSL transport accidentally disconnected after read timeout.

    Fix contributed by Craig Jellick.

.. _version-1.4.3:

1.4.3
=====
:release-date: 2014-02-09 03:00 P.M UTC
:release-by: Ask Solem

- Fixed bug where more data was requested from the socket
  than was actually needed.

    Contributed by Ionel Cristian Mărieș.

.. _version-1.4.2:

1.4.2
=====
:release-date: 2014-01-23 05:00 P.M UTC

- Heartbeat negotiation would use heartbeat value from server even
  if heartbeat disabled (Issue #31).

.. _version-1.4.1:

1.4.1
=====
:release-date: 2014-01-14 09:30 P.M UTC
:release-by: Ask Solem

- Fixed error occurring when heartbeats disabled.

.. _version-1.4.0:

1.4.0
=====
:release-date: 2014-01-13 03:00 P.M UTC
:release-by: Ask Solem

- Heartbeat implementation improved (Issue #6).

    The new heartbeat behavior is the same approach as taken by the
    RabbitMQ java library.

    This also means that clients should preferably call the ``heartbeat_tick``
    method more frequently (like every second) instead of using the old
    ``rate`` argument (which is now ignored).

    - Heartbeat interval is negotiated with the server.
    - Some delay is allowed if the heartbeat is late.
    - Monotonic time is used to keep track of the heartbeat
      instead of relying on the caller to call the checking function
      at the right time.

    Contributed by Dustin J. Mitchell.

- NoneType is now supported in tables and arrays.

    Contributed by Dominik Fässler.

- SSLTransport: Now handles ``ENOENT``.

    Fix contributed by Adrien Guinet.

.. _version-1.3.3:

1.3.3
=====
:release-date: 2013-11-11 03:30 P.M UTC
:release-by: Ask Solem

- SSLTransport: Now keeps read buffer if an exception is raised
  (Issue #26).

    Fix contributed by Tommie Gannert.

.. _version-1.3.2:

1.3.2
=====
:release-date: 2013-10-29 02:00 P.M UTC
:release-by: Ask Solem

- Message.channel is now a channel object (not the channel id).

- Bug in previous version caused the socket to be flagged as disconnected
  at EAGAIN/EINTR.

.. _version-1.3.1:

1.3.1
=====
:release-date: 2013-10-24 04:00 P.M UTC
:release-by: Ask Solem

- Now implements Connection.connected (Issue #22).

- Fixed bug where ``str(AMQPError)`` did not return string.

.. _version-1.3.0:

1.3.0
=====
:release-date: 2013-09-04 02:39 P.M UTC
:release-by: Ask Solem

- Now sets ``Message.channel`` on delivery (Issue #12)

    amqplib used to make the channel object available
    as ``Message.delivery_info['channel']``, but this was removed
    in py-amqp.  librabbitmq sets ``Message.channel``,
    which is a more reasonable solution in our opinion as that
    keeps the delivery info intact.

- New option to wait for publish confirmations (Issue #3)

    There is now a new Connection ``confirm_publish`` that will
    force any ``basic_publish`` call to wait for confirmation.

    Enabling publisher confirms like this degrades performance
    considerably, but can be suitable for some applications
    and now it's possible by configuration.

- ``queue_declare`` now returns named tuple of type
  :class:`~amqp.protocol.basic_declare_ok_t`.

    Supporting fields: ``queue``, ``message_count``, and
    ``consumer_count``.

- Contents of ``Channel.returned_messages`` is now named tuples.

    Supporting fields: ``reply_code``, ``reply_text``, ``exchange``,
    ``routing_key``, and ``message``.

- Sockets now set to close on exec using the ``FD_CLOEXEC`` flag.

    Currently only supported on platforms supporting this flag,
    which does not include Windows.

    Contributed by Tommie Gannert.

.. _version-1.2.1:

1.2.1
=====
:release-date: 2013-08-16 05:30 P.M UTC
:release-by: Ask Solem

- Adds promise type: :meth:`amqp.utils.promise`

- Merges fixes from 1.0.x

.. _version-1.2.0:

1.2.0
=====
:release-date: 2012-11-12 04:00 P.M UTC
:release-by: Ask Solem

- New exception hierarchy:

    - :class:`~amqp.AMQPError`
        - :class:`~amqp.ConnectionError`
            - :class:`~amqp.RecoverableConnectionError`
                - :class:`~amqp.ConsumerCancelled`
                - :class:`~amqp.ConnectionForced`
                - :class:`~amqp.ResourceError`
            - :class:`~IrrecoverableConnectionError`
                - :class:`~amqp.ChannelNotOpen`
                - :class:`~amqp.FrameError`
                - :class:`~amqp.FrameSyntaxError`
                - :class:`~amqp.InvalidCommand`
                - :class:`~amqp.InvalidPath`
                - :class:`~amqp.NotAllowed`
                - :class:`~amqp.UnexpectedFrame`
                - :class:`~amqp.AMQPNotImplementedError`
                - :class:`~amqp.InternalError`
        - :class:`~amqp.ChannelError`
            - :class:`~RecoverableChannelError`
                - :class:`~amqp.ContentTooLarge`
                - :class:`~amqp.NoConsumers`
                - :class:`~amqp.ResourceLocked`
            - :class:`~IrrecoverableChannelError`
                - :class:`~amqp.AccessRefused`
                - :class:`~amqp.NotFound`
                - :class:`~amqp.PreconditionFailed`


.. _version-1.1.0:

1.1.0
=====
:release-date: 2013-11-08 10:36 P.M UTC
:release-by: Ask Solem

- No longer supports Python 2.5

- Fixed receiving of float table values.

- Now Supports Python 3 and Python 2.6+ in the same source code.

- Python 3 related fixes.

.. _version-1.0.13:

1.0.13
======
:release-date: 2013-07-31 04:00 P.M BST
:release-by: Ask Solem

- Fixed problems with the SSL transport (Issue #15).

    Fix contributed by Adrien Guinet.

- Small optimizations

.. _version-1.0.12:

1.0.12
======
:release-date: 2013-06-25 02:00 P.M BST
:release-by: Ask Solem

- Fixed another Python 3 compatibility problem.

.. _version-1.0.11:

1.0.11
======
:release-date: 2013-04-11 06:00 P.M BST
:release-by: Ask Solem

- Fixed Python 3 incompatibility in ``amqp/transport.py``.

.. _version-1.0.10:

1.0.10
======
:release-date: 2013-03-21 03:30 P.M UTC
:release-by: Ask Solem

- Fixed Python 3 incompatibility in ``amqp/serialization.py``.
  (Issue #11).

.. _version-1.0.9:

1.0.9
=====
:release-date: 2013-03-08 10:40 A.M UTC
:release-by: Ask Solem

- Publisher ack callbacks should now work after typo fix (Issue #9).

- ``channel(explicit_id)`` will now claim that id from the array
  of unused channel ids.

- Fixes Jython compatibility.

.. _version-1.0.8:

1.0.8
=====
:release-date: 2013-02-08 01:00 P.M UTC
:release-by: Ask Solem

- Fixed SyntaxError on Python 2.5

.. _version-1.0.7:

1.0.7
=====
:release-date: 2013-02-08 01:00 P.M UTC
:release-by: Ask Solem

- Workaround for bug on some Python 2.5 installations where (2**32) is 0.

- Can now serialize the ARRAY type.

    Contributed by Adam Wentz.

- Fixed tuple format bug in exception (Issue #4).

.. _version-1.0.6:

1.0.6
=====
:release-date: 2012-11-29 01:14 P.M UTC
:release-by: Ask Solem

- ``Channel.close`` is now ignored if the connection attribute is None.

.. _version-1.0.5:

1.0.5
=====
:release-date: 2012-11-21 04:00 P.M UTC
:release-by: Ask Solem

- ``Channel.basic_cancel`` is now ignored if the channel was already closed.

- ``Channel.events`` is now a dict of sets::

    >>> channel.events['basic_return'].add(on_basic_return)
    >>> channel.events['basic_return'].discard(on_basic_return)

.. _version-1.0.4:

1.0.4
=====
:release-date: 2012-11-13 04:00 P.M UTC
:release-by: Ask Solem

- Fixes Python 2.5 support

.. _version-1.0.3:

1.0.3
=====
:release-date: 2012-11-12 04:00 P.M UTC
:release-by: Ask Solem

- Now can also handle float in headers/tables when receiving messages.

- Now uses :class:`array.array` to keep track of unused channel ids.

- The :data:`~amqp.exceptions.METHOD_NAME_MAP` has been updated for
  amqp/0.9.1 and Rabbit extensions.

- Removed a bunch of accidentally included images.

.. _version-1.0.2:

1.0.2
=====
:release-date: 2012-11-06 05:00 P.M UTC
:release-by: Ask Solem

- Now supports float values in headers/tables.

.. _version-1.0.1:

1.0.1
=====
:release-date: 2012-11-05 01:00 P.M UTC
:release-by: Ask Solem

- Connection errors no longer includes :exc:`AttributeError`.

- Fixed problem with using the SSL transport in a non-blocking context.

    Fix contributed by Mher Movsisyan.


.. _version-1.0.0:

1.0.0
=====
:release-date: 2012-11-05 01:00 P.M UTC
:release-by: Ask Solem

- Channels are now restored on channel error, so that the connection does not
  have to closed.

.. _version-0.9.4:

Version 0.9.4
=============

- Adds support for ``exchange_bind`` and ``exchange_unbind``.

    Contributed by Rumyana Neykova

- Fixed bugs in funtests and demo scripts.

    Contributed by Rumyana Neykova

.. _version-0.9.3:

Version 0.9.3
=============

- Fixed bug that could cause the consumer to crash when reading
  large message payloads asynchronously.

- Serialization error messages now include the invalid value.

.. _version-0.9.2:

Version 0.9.2
=============

- Consumer cancel notification support was broken (Issue #1)

    Fix contributed by Andrew Grangaard

.. _version-0.9.1:

Version 0.9.1
=============

- Supports draining events from multiple channels (``Connection.drain_events``)
- Support for timeouts
- Support for heartbeats
    - ``Connection.heartbeat_tick(rate=2)`` must called at regular intervals
      (half of the heartbeat value if rate is 2).
    - Or some other scheme by using ``Connection.send_heartbeat``.
- Supports RabbitMQ extensions:
    - Consumer Cancel Notifications
        - by default a cancel results in ``ChannelError`` being raised
        - but not if a ``on_cancel`` callback is passed to ``basic_consume``.
    - Publisher confirms
        - ``Channel.confirm_select()`` enables publisher confirms.
        - ``Channel.events['basic_ack'].append(my_callback)`` adds a callback
          to be called when a message is confirmed. This callback is then
          called with the signature ``(delivery_tag, multiple)``.
- Support for ``basic_return``
- Uses AMQP 0-9-1 instead of 0-8.
    - ``Channel.access_request`` and ``ticket`` arguments to methods
      **removed**.
    - Supports the ``arguments`` argument to ``basic_consume``.
    - ``internal`` argument to ``exchange_declare`` removed.
    - ``auto_delete`` argument to ``exchange_declare`` deprecated
    - ``insist`` argument to ``Connection`` removed.
    - ``Channel.alerts`` has been removed.
    - Support for ``Channel.basic_recover_async``.
    - ``Channel.basic_recover`` deprecated.
- Exceptions renamed to have idiomatic names:
    - ``AMQPException`` -> ``AMQPError``
    - ``AMQPConnectionException`` -> ConnectionError``
    - ``AMQPChannelException`` -> ChannelError``
    - ``Connection.known_hosts`` removed.
    - ``Connection`` no longer supports redirects.
    - ``exchange`` argument to ``queue_bind`` can now be empty
      to use the "default exchange".
- Adds ``Connection.is_alive`` that tries to detect
  whether the connection can still be used.
- Adds ``Connection.connection_errors`` and ``.channel_errors``,
  a list of recoverable errors.
- Exposes the underlying socket as ``Connection.sock``.
- Adds ``Channel.no_ack_consumers`` to keep track of consumer tags
  that set the no_ack flag.
- Slightly better at error recovery
