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Makes it easy to run a SockJS server in Django through Tornado

Project Description

Makes it easy to run a SockJS server in Django through Tornado.

This package is basically a thin wrapper on top of sockjs-tornado which makes it dead easy to write websocket based apps on top of the sockjs Websocket emulation library.

With this wrapper you basically have access to everything else you need from your Django project such as your models and your various settings.

Because you need to run two processes (one for runserver (or wsgi) and one for socketserver) it means that the two really are separate python processes so you can’t easily do things like registering signals and trigger them in one process and have them fire in another.

Getting started

Create a class somewhere that looks something like this:

from sockjs.tornado import SockJSConnection

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

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


Next, to start the server simply run:

python socketserver [--help]

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

python 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) {
sock.onclose = function() {
  console.log('closed :(');
sock.onopen = function() {
  console.log('opened :>');

function letTheMadnessBegin() {
  // silly, but you get the idea
    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.

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