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Name: autobahn
Version: 17.10.1
Summary: WebSocket client & server library, WAMP real-time framework
Home-page: http://crossbar.io/autobahn
Author: Crossbar.io Technologies GmbH
Author-email: UNKNOWN
License: MIT License
Description-Content-Type: UNKNOWN
Description: Autobahn\|Python
================
WebSocket & WAMP for Python on Twisted and asyncio.
| |Version| |Build Status| |Coverage| |Docs| |Docker|
--------------
| **Quick Links**: `Source Code <https://github.com/crossbario/autobahn-python>`__ - `Documentation <https://autobahn.readthedocs.io/en/latest/>`__ - `WebSocket Examples <https://autobahn.readthedocs.io/en/latest/websocket/examples.html>`__ - `WAMP Examples <https://autobahn.readthedocs.io/en/latest/wamp/examples.html>`__
| **Community**: `Mailing list <http://groups.google.com/group/autobahnws>`__ - `StackOverflow <http://stackoverflow.com/questions/tagged/autobahn>`__ - `Twitter <https://twitter.com/autobahnws>`__ - `IRC #autobahn/chat.freenode.net <https://webchat.freenode.net/>`__
| **Companion Projects**: `Autobahn|JS <https://github.com/crossbario/autobahn-js/>`__ - `Autobahn|Cpp <https://github.com/crossbario/autobahn-cpp>`__ - `Autobahn|Testsuite <https://github.com/crossbario/autobahn-testsuite>`__ - `Crossbar.io <http://crossbar.io>`__ - `WAMP <http://wamp-proto.org>`__
Introduction
------------
**Autobahn\|Python** is a subproject of `Autobahn <http://crossbar.io/autobahn>`__ and provides open-source
implementations of
- `The WebSocket Protocol <http://tools.ietf.org/html/rfc6455>`__
- `The Web Application Messaging Protocol (WAMP) <http://wamp-proto.org/>`__
for Python 2 and 3, and running on `Twisted <http://twistedmatrix.com/>`__ and `asyncio <http://docs.python.org/3.4/library/asyncio.html>`__.
You can use **Autobahn\|Python** to create clients and servers in Python speaking just plain WebSocket or WAMP.
**WebSocket** allows `bidirectional real-time messaging on the Web <http://crossbario.com/blog/post/websocket-why-what-can-i-use-it/>`__ and beyond, while `WAMP <http://wamp-proto.org/>`__ adds real-time application communication on top of WebSocket.
**WAMP** provides asynchronous **Remote Procedure Calls** and **Publish & Subscribe** for applications in *one* protocol running over `WebSocket <http://tools.ietf.org/html/rfc6455>`__. WAMP is a *routed* protocol, so you need a **WAMP Router** to connect your **Autobahn\|Python** based clients. We provide `Crossbar.io <http://crossbar.io>`__, but there are `other options <http://wamp-proto.org/implementations/#routers>`__ as well.
Features
--------
- framework for `WebSocket <http://tools.ietf.org/html/rfc6455>`__ and `WAMP <http://wamp-proto.org/>`__ clients and servers
- compatible with Python 2.7 and 3.3 or later
- runs on `CPython <http://python.org/>`__, `PyPy <http://pypy.org/>`__ and `Jython <http://jython.org/>`__
- runs under `Twisted <http://twistedmatrix.com/>`__ and `asyncio <http://docs.python.org/3.4/library/asyncio.html>`__ - implements WebSocket
`RFC6455 <http://tools.ietf.org/html/rfc6455>`__ and Draft Hybi-10+
- implements `WebSocket compression <http://tools.ietf.org/html/draft-ietf-hybi-permessage-compression>`__
- implements `WAMP <http://wamp-proto.org/>`__, the Web Application Messaging Protocol
- high-performance, fully asynchronous implementation
- best-in-class standards conformance (100% strict passes with `Autobahn Testsuite <http://crossbar.io/autobahn#testsuite>`__: `Client <http://autobahn.ws/testsuite/reports/clients/index.html>`__ `Server <http://autobahn.ws/testsuite/reports/servers/index.html>`__)
- message-, frame- and streaming-APIs for WebSocket
- supports TLS (secure WebSocket) and proxies
- Open-source (`MIT license <https://github.com/crossbario/autobahn-python/blob/master/LICENSE>`__)
Show me some code
-----------------
To give you a first impression, here are two examples. We have lot more `in the repo <https://github.com/crossbario/autobahn-python/tree/master/examples>`__.
WebSocket Echo Server
~~~~~~~~~~~~~~~~~~~~~
Here is a simple WebSocket Echo Server that will echo back any WebSocket
message received:
.. code:: python
from autobahn.twisted.websocket import WebSocketServerProtocol
# or: from autobahn.asyncio.websocket import WebSocketServerProtocol
class MyServerProtocol(WebSocketServerProtocol):
def onConnect(self, request):
print("Client connecting: {}".format(request.peer))
def onOpen(self):
print("WebSocket connection open.")
def onMessage(self, payload, isBinary):
if isBinary:
print("Binary message received: {} bytes".format(len(payload)))
else:
print("Text message received: {}".format(payload.decode('utf8')))
# echo back message verbatim
self.sendMessage(payload, isBinary)
def onClose(self, wasClean, code, reason):
print("WebSocket connection closed: {}".format(reason))
To actually run above server protocol, you need some lines of `boilerplate <https://autobahn.readthedocs.io/en/latest/websocket/programming.html#running-a-server>`__.
WAMP Application Component
~~~~~~~~~~~~~~~~~~~~~~~~~~
Here is a WAMP Application Component that performs all four types of
actions that WAMP provides:
#. **subscribe** to a topic
#. **publish** an event
#. **register** a procedure
#. **call** a procedure
.. code:: python
from autobahn.twisted.wamp import ApplicationSession
# or: from autobahn.asyncio.wamp import ApplicationSession
class MyComponent(ApplicationSession):
@inlineCallbacks
def onJoin(self, details):
# 1. subscribe to a topic so we receive events
def onevent(msg):
print("Got event: {}".format(msg))
yield self.subscribe(onevent, 'com.myapp.hello')
# 2. publish an event to a topic
self.publish('com.myapp.hello', 'Hello, world!')
# 3. register a procedure for remote calling
def add2(x, y):
return x + y
self.register(add2, 'com.myapp.add2');
# 4. call a remote procedure
res = yield self.call('com.myapp.add2', 2, 3)
print("Got result: {}".format(res))
Above code will work on Twisted and asyncio by changing a single line
(the base class of ``MyComponent``). To actually run above application component, you need some lines of `boilerplate <https://autobahn.readthedocs.io/en/latest/wamp/programming.html#running-components>`__ and a `WAMP Router <https://autobahn.readthedocs.io/en/latest/wamp/programming.html#running-a-wamp-router>`__.
.. |Version| image:: https://img.shields.io/pypi/v/autobahn.svg
:target: https://pypi.python.org/pypi/autobahn
.. |Master Branch| image:: https://img.shields.io/badge/branch-master-orange.svg
:target: https://travis-ci.org/crossbario/autobahn-python.svg?branch=master
.. |Build Status| image:: https://travis-ci.org/crossbario/autobahn-python.svg?branch=master
:target: https://travis-ci.org/crossbario/autobahn-python
.. |Coverage| image:: https://img.shields.io/codecov/c/github/crossbario/autobahn-python/master.svg
:target: https://codecov.io/github/crossbario/autobahn-python
.. |Docs| image:: https://img.shields.io/badge/docs-latest-brightgreen.svg?style=flat
:target: https://autobahn.readthedocs.io/en/latest/
.. |Docker| image:: https://img.shields.io/badge/docker-ready-blue.svg?style=flat
:target: https://hub.docker.com/r/crossbario/autobahn-python/
Keywords: autobahn crossbar websocket realtime rfc6455 wamp rpc pubsub twisted asyncio
Platform: Any
Classifier: License :: OSI Approved :: MIT License
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: No Input/Output (Daemon)
Classifier: Framework :: Twisted
Classifier: Intended Audience :: Developers
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Programming Language :: Python :: Implementation :: Jython
Classifier: Topic :: Internet
Classifier: Topic :: Internet :: WWW/HTTP
Classifier: Topic :: Communications
Classifier: Topic :: System :: Distributed Computing
Classifier: Topic :: Software Development :: Libraries
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Software Development :: Object Brokering
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