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Pusher websocket client for python, based on Erik Kulyk's PythonPusherClient

Project description

[![PyPI version](https://badge.fury.io/py/Pysher.svg)](https://badge.fury.io/py/Pysher)

Pysher
=============

`pysher` is a python module for handling pusher websockets. It is based on @ekulyk's `PythonPusherClient`. This fork is meant as
a continuation of the project and is actively maintained. A key difference is the dropped support for pre-3.5 Python versions.

Installation
------------

Simply run `python setup.py install` - or install via pip `pip install pysher`.

This module depends on websocket-client module available from: <http://github.com/websocket-client/websocket-client>

Example
-------

Example of using this pusher client to consume websockets::

```python
import pysher

# Add a logging handler so we can see the raw communication data
import logging
root = logging.getLogger()
root.setLevel(logging.INFO)
ch = logging.StreamHandler(sys.stdout)
root.addHandler(ch)

pusher = pysher.Pusher(appkey)

def my_func(*args, **kwargs):
print("processing Args:", args)
print("processing Kwargs:", kwargs)

# We can't subscribe until we've connected, so we use a callback handler
# to subscribe when able
def connect_handler(data):
channel = pusher.subscribe('mychannel')
channel.bind('myevent', my_func)

pusher.connection.bind('pusher:connection_established', connect_handler)
pusher.connect()

while True:
# Do other things in the meantime here...
time.sleep(1)
```

Sending pusher events to a channel can be done simply using the pusher client supplied by pusher. You can get it here: <https://github.com/pusher/pusher-http-python>

import pusher
pusher.app_id = app_id
pusher.key = appkey

p = pusher.Pusher()
p['mychannel'].trigger('myevent', 'mydata')

Performance
------
Pysher relies on websocket-client (websocket-client on pyPI, websocket import in code), which by default does utf5 validation in pure python. This is somewhat cpu hungry for lot's of messages (100's of KB/s or more). To optimize this validation consider installing the wsaccel module from pyPI to let websocket-client use C-compiled utf5 validation methods (websocket does this automatically once wsaccel is present and importable).

Thanks
------
A big thanks to @ekulyk for developing the [PythonPusherClient](https://github.com/ekulyk/PythonPusherClient) library.


Copyright
---------

MTI License - See LICENSE for details.

Changelog
---------
## Version 1.0.2
### Fixed
- #38 Fix missing `ẁs` arg for websocket app callbacks, thanks to @[squgeim](https://github.com/squgeim)
## Version 1.0.0
### Updated
- #35 Support websocket-client >0.48 only and fix reconnect error, thanks to @[agronholm](https://github.com/agronholm)

**This change may break existing setups and is backwards-incompatible!**

## Version 0.5.0
### Added
- #14 Added support for cluster configuration, thanks to @[Yvictor](https://github.com/Yvictor)

### Fixed
- #30 Require websocket-client version 0.48 or earlier.
- #24 Signature generation now works as expected, thanks to @[agronholm](https://github.com/agronholm)
- #31 Name threads of the pysher lib for better debugging, thanks to @[caliloo](https://github.com/caliloo)

## Version 0.4.2
### Fixed:
- #11 Global Logger settings no longer overridden in Connection logger

## Version 0.4.0
### Added:
- #8 Add support for WebSocket over HTTP proxy, thanks to @[1tgr](https://github.com/1tgr)

## Version 0.3.0
### Added:
- #7 Auto-resubscribe to channels after reconnecting, thanks to @[pinealan](https://github.com/pinealan)

### Fixed:
- #4, #5 Updated references to the library name, thanks to @[deanmaniatis](https://github.com/deanmaniatis)

## Version 0.2.0
### Added:
- #2 Allow for token generated by auth endpoint, thanks to @[wardcraigj](https://github.com/wardcraigj)
- #3 Allow instantiation with custom host, thanks to @[wardcraigj](https://github.com/wardcraigj)


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