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python-engineio | ||
=============== | ||
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.. image:: https://travis-ci.org/miguelgrinberg/python-engineio.svg?branch=master | ||
:target: https://travis-ci.org/miguelgrinberg/python-engineio | ||
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Python implementation of the `Engine.IO`_ realtime server. | ||
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Features | ||
-------- | ||
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- Fully compatible with the Javascript `engine.io-client`_ library. | ||
- Compatible with Python 2.7 and Python 3.3+. | ||
- Based on `Eventlet`_, enabling large number of clients even on modest | ||
hardware. | ||
- Includes a WSGI middleware that integrates Engine.IO traffic with | ||
standard WSGI applications. | ||
- Uses an event-based architecture implemented with decorators that | ||
hides the details of the protocol. | ||
- Implements HTTP long-polling and WebSocket transports. | ||
- Supports XHR2 and XHR browsers as clients. | ||
- Supports text and binary messages. | ||
- Supports gzip and deflate HTTP compression. | ||
- Configurable CORS responses to avoid cross-origin problems with | ||
browsers. | ||
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Example | ||
------- | ||
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The following application uses Flask to serve the HTML/Javascript to the | ||
client: | ||
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:: | ||
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import engineio | ||
import eventlet | ||
from flask import Flask, render_template | ||
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eio = engineio.Server() | ||
app = Flask(__name__) | ||
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@app.route('/') | ||
def index(): | ||
"""Serve the client-side application.""" | ||
return render_template('index.html') | ||
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@eio.on('connect') | ||
def connect(sid, environ): | ||
print("connect ", sid) | ||
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@eio.on('message') | ||
def message(sid, data): | ||
print("message ", data) | ||
eio.send(sid, 'reply') | ||
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@eio.on('disconnect') | ||
def disconnect(sid): | ||
print('disconnect ', sid) | ||
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if __name__ == '__main__': | ||
# wrap Flask application with engineio's middleware | ||
app = engineio.Middleware(eio, app) | ||
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# deploy as an eventlet WSGI server | ||
eventlet.wsgi.server(eventlet.listen(('', 8000)), app) | ||
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Resources | ||
--------- | ||
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- `Documentation`_ | ||
- `PyPI`_ | ||
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.. _Engine.IO: https://github.com/Automattic/engine.io | ||
.. _engine.io-client: https://github.com/Automattic/engine.io-client | ||
.. _Eventlet: http://eventlet.net/ | ||
.. _Documentation: http://pythonhosted.org/python-engineio | ||
.. _PyPI: https://pypi.python.org/pypi/python-engineio |
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