django-sockjs-tornado 0.0.1

Getting started

Create a class somewhere that looks something like this:

from sockjs.tornado import SockJSConnection

class MyConnection(SockJSConnection):
    def on_open(self, request):
         pass
    def on_message(self, message):
         pass
    def on_close(self):
         pass

Next, you need to put the loction of this in a setting in your settings.py something like this:

SOCKJS_CLASSES = (
    'myproject.myapp.myfile.MyConnection',
)

Next, to start the server simply run:

python manage.py socketserver [--help]

You’ll still have your regular django server too in a separate terminal:

python manage.py runserver

Now you should be able to write the juicy Javascript using sockjs-client. You can start by downloading the latest minified version from the CDN.

A simple app might look like this:

sock = new SockJS('http://localhost:9999/echo');
sock.onmessage = function(e) {
  console.log(e.data);
};
sock.onclose = function() {
  console.log('closed :(');
};
sock.onopen = function() {
  console.log('opened :>');
  letTheMadnessBegin();
};

function letTheMadnessBegin() {
  // silly, but you get the idea
  sock.send(JSON.stringify({
    name: $('#name').text(),
    message: $('input').val()
  }));
}

Getting fancy

There’s a shitload more things you can do with this of course. For example, you might want to add some form of authentication. Since the on_open handler receives a request you can use that to ask for request.get_cookie() which is left to the reader as an exercise.

There is a slightly more fancy example included in this package under example which might get you some ideas. It’s a fully working chat application that just works.

This package is built mainly on Serve Koval’s amazing work on sockjs-tornado which has lots of more examples and documentation that might help you. For example, it lists to a sample HAProxy configuration which you might need once you take your project live since you can’t keep exposing port 9999 on a production system.