pyramid_sockjs 0.3.8

SockJS server implementation for Pyramid.

pyramid_sockjs

pyramid_sockjs is a gevent-based SockJS integration for Pyramid. SockJS interface is implemented as a pyramid route. pyramid_sockjs runs inside a WSGI application rather than WSGI server. This means all of your previous WSGI/Pyramid experience will be relevant. Its possible to create any number of different sockjs routes, ie /__sockjs__/* or /mycustom-sockjs/*. You can provide different session implementation and management for each sockjs route.

Gevent based server is required for pyramid_sockjs. For example gunicorn with gevent worker. pyramid_sockjs provides simple gevent based paster server runner:

[server:main]
use = egg:pyramid_sockjs#server
host = 0.0.0.0
port = 8080

Example of sockjs route:

def main(global_settings, **settings):
    config = Configurator(settings=settings)
    config.add_sockjs_route(prefix='/__sockjs__')

    return config.make_wsgi_app()

Client side code:

<script src="http://cdn.sockjs.org/sockjs-0.3.4.min.js"></script>
<script>
    var sock = new SockJS('http://localhost:8080/__sockjs__');

    sock.onopen = function() {
      console.log('open');
    };

    sock.onmessage = function(obj) {
      console.log(obj);
    };

    sock.onclose = function() {
      console.log('close');
    };
</script>

Installation

1. Install virtualenv:

   $ wget https://raw.github.com/pypa/virtualenv/master/virtualenv.py
   $ python2.7 ./virtualenv.py --no-site-packages sockjs

2. Install gevent 1.0b2 (non-Windows):

   $ ./sockjs/bin/pip install http://gevent.googlecode.com/files/gevent-1.0b2.tar.gz

2. Install gevent 1.0b2 (Windows, 32bit Python 2.7):

   $ ./sockjs/Scripts/easy_install http://gevent.googlecode.com/files/gevent-1.0b2-py2.7-win32.egg

3. Clone pyramid_sockjs from github and then install:

   $ git clone https://github.com/fafhrd91/pyramid_sockjs.git
   $ cd pyramid_sockjs
   $ ../sockjs/bin/python setup.py develop

To run chat example use following command:

$ ./sockjs/bin/python ./pyramid_sockjs/examples/chat.py

Supported transports

• websocket (hixie-76 and hybi-10)

• xhr-streaming

• xhr-polling

• iframe-xhr-polling

• iframe-eventsource (EventSource used from an iframe via postMessage)

• iframe-htmlfile (HtmlFile used from an iframe via postMessage.)

• jsonp-polling

Limitations

• Pyramid sockjs does not support multple websocket session with same session id.

• gevent does not support Python 3

• Pyramid sockjs can’t detect client disconnection on heroku.

Requirements

• Python 2.6/2.7

• virtualenv

• gevent 1.0b1 or greater

• gevent-websocket 0.3.0 or greater

• gunicorn 0.14.3 or greater

Examples

You can find several examples in the pyramid_sockjs repository at github.

https://github.com/fafhrd91/pyramid_sockjs/tree/master/examples

License

pyramid_sockjs is offered under the MIT license.

CHANGES

0.3.8 (2012-11-15)

• Update sockjs-protocol-0.3.3

• Fix TypeError in Session.__str__ method

• Fix eventsource transport for gevent 1.0b3 version

0.3.7 (2012-07-16)

• Explicitly open session before accept any incoming messages, for webscoket transport.

0.3.6 (2012-06-21)

• Possible session hijacking #7

• Use Configurator action for session gc start. #6

0.3.5 (2012-05-19)

• fixed close/closed session states for websocket transport.

• removed gunicorn monkey patche. gunicorn 0.14.3 is required.

0.3.4 (2012-05-06)

• Fixed datetime serialization, assume all datetime objects in utc tz.

0.3.3 (2012-05-02)

• Pass request to session factory

0.3.2 (2012-04-02)

• Make ‘cookie_needed’ is configuration option

• Update sockjs-protocol 0.3

0.3.1 (2012-03-27)

• Fixed python2.6 compatibility. See #1

0.3.0 (2012-03-26)

• Hixie 75/76 websocket protocol added

0.2.1 (2012-03-20)

• Fixed websocket frame with ‘[]’

• Update cors headers for dev protocol compliance

0.2 (2012-03-16)

• Fixed ujson support

0.1 (2012-02-23)

• Initial release