Karma/Collaboration

Objective

To provide a mechanism to enable collaboration using JavaScript. On this way, we'll be able to support collaboration on Karma lessons.

Use cases

Examples:

• A simple chat (over an html file), where you can see connected children to the activity and talk each other.

• Let's imagine a lesson: "Learning basic arithmetic", on this lesson we touch the topics: add, rest and multiply a number. At the end of the lesson we got the "Test". Here on "Test" one child writes a basic equation and challenges other child to solve it, then switch turns.

The problem

How to create an easy way to write collaborative JavaScript to be run client-side in browsers.

Keep in mind

• JavaScript has no model for distributed collaboration.
• Shared data can be considered volatile.

Possible solutions

It would be ideally as simple as possible and as web-like as possible.

lucian has suggested 2 possible ways[1]:

• Starting local servers in each Browse and using XMLHttpRequest(XHR) to send data between.
• Adding an API for this in window.sugar and using the existing Sugar collaboration Python API as a backend.

bemasc

• a DNS server and httpd server on each client. WikiBrowse

m_stone:

• name the people with one wishes to collaborate with:
  • D-Bus to telepathy
  • HTTP to a webserver to D-Bus to telepathy

• data transfer via:
  • D-Bus + Telepathy
  • a central relay webserver
  • point-to-point HTTP links to peer webservers.

work in progress