Skip to main content

Engine.IO server

Project description

https://travis-ci.org/miguelgrinberg/python-engineio.svg?branch=master

Python implementation of the Engine.IO realtime server.

Features

  • Fully compatible with the Javascript engine.io-client library, versions 1.5.0 and up.

  • Compatible with Python 2.7 and Python 3.3+.

  • Supports large number of clients even on modest hardware when used with an asynchronous server based on asyncio (sanic, aiohttp or tornado), eventlet or gevent. For development and testing, any WSGI compliant multi-threaded server can be used.

  • 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.

Examples

The following application uses the Eventlet asynchronous server, and includes a small Flask application that serves the HTML/Javascript to the client:

import engineio
import eventlet
from flask import Flask, render_template

eio = engineio.Server()
app = Flask(__name__)

@app.route('/')
def index():
    """Serve the client-side application."""
    return render_template('index.html')

@eio.on('connect')
def connect(sid, environ):
    print("connect ", sid)

@eio.on('message')
def message(sid, data):
    print("message ", data)
    eio.send(sid, 'reply')

@eio.on('disconnect')
def disconnect(sid):
    print('disconnect ', sid)

if __name__ == '__main__':
    # wrap Flask application with engineio's middleware
    app = engineio.WSGIApp(eio, app)

    # deploy as an eventlet WSGI server
    eventlet.wsgi.server(eventlet.listen(('', 8000)), app)

And below is a similar example, coded for asyncio (Python 3.5+ only) with the aiohttp framework:

from aiohttp import web
import engineio

eio = engineio.AsyncServer()
app = web.Application()
eio.attach(app)

async def index(request):
    """Serve the client-side application."""
    with open('index.html') as f:
        return web.Response(text=f.read(), content_type='text/html')

@eio.on('connect')
def connect(sid, environ):
    print("connect ", sid)

@eio.on('message')
async def message(sid, data):
    print("message ", data)
    await eio.send(sid, 'reply')

@eio.on('disconnect')
def disconnect(sid):
    print('disconnect ', sid)

app.router.add_static('/static', 'static')
app.router.add_get('/', index)

if __name__ == '__main__':
    web.run_app(app)

Resources

Project details


Release history Release notifications | RSS feed

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

python-engineio-3.1.0.tar.gz (57.6 kB view details)

Uploaded Source

Built Distribution

python_engineio-3.1.0-py2.py3-none-any.whl (85.3 kB view details)

Uploaded Python 2 Python 3

File details

Details for the file python-engineio-3.1.0.tar.gz.

File metadata

  • Download URL: python-engineio-3.1.0.tar.gz
  • Upload date:
  • Size: 57.6 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.12.1 pkginfo/1.4.2 requests/2.20.1 setuptools/39.0.1 requests-toolbelt/0.8.0 tqdm/4.28.1 CPython/3.6.6

File hashes

Hashes for python-engineio-3.1.0.tar.gz
Algorithm Hash digest
SHA256 d7341725001afded65e42620e26adc54a450cf4082dd54a407480cb9a64fcdf9
MD5 3e2428aa3b9ba1d1ff5b6bff2c306e7e
BLAKE2b-256 253757dc050723f3e64a0a652711b3831263d99f5ade2e05e5d6038354be7eaa

See more details on using hashes here.

Provenance

File details

Details for the file python_engineio-3.1.0-py2.py3-none-any.whl.

File metadata

  • Download URL: python_engineio-3.1.0-py2.py3-none-any.whl
  • Upload date:
  • Size: 85.3 kB
  • Tags: Python 2, Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.12.1 pkginfo/1.4.2 requests/2.20.1 setuptools/39.0.1 requests-toolbelt/0.8.0 tqdm/4.28.1 CPython/3.6.6

File hashes

Hashes for python_engineio-3.1.0-py2.py3-none-any.whl
Algorithm Hash digest
SHA256 aeecfea10071966c351584e095769865d68ec03a78cb596696151358a37a113f
MD5 54ad42b77fe02ff0672b68e6273f5493
BLAKE2b-256 1e3b3078b78a62a074796c5c3b44df85462185a4ff33247e949aa803d172100b

See more details on using hashes here.

Provenance

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page