Lightbend Activator

Play Framework with Websocket implementation, statefull/stateless

Activator will be EOL-ed on May 24, 2017.

We’re making it easier and simpler for developers to get started with Lightbend technologies. This unfortunately means that future releases of Play, Akka and Scala will no longer include Activator support, and Lightbend’s Activator server will be decommissioned by the end of 2017. Instead of supporting Activator to create and set up development projects, we'll be supporting standard Giter8 templates for sbt users and Maven archetypes for Maven users. So going forward,

To create new Lightbend projects

Instead of using the Activator command, make sure you have sbt 0.13.13 (or higher), and use the “sbt new” command, providing the name of the template. For example, “$ sbt new akka/hello-akka.g8”. You can find a list of templates here.

Also, as a convenience, the Lightbend Project Starter allows you to quickly create a variety of example projects that you just unzip and run.

To create new templates

If you want to create new templates, you can now do that in Giter8.

To migrate templates from Activator to Giter8

If you created Activator templates in the past, please consider migrating them to Giter8 with this simple process.

Play Framework with Websocket implementation, statefull/stateless

April 30, 2014
playframework websocket akka scala

A starter application for Play! using PlayWebsocketPlugin, implementing both statefull and stateless actors

How to get "Play Framework with Websocket implementation, statefull/stateless" on your computer

There are several ways to get this template.

Option 1: Choose play-websocket in the Lightbend Activator UI.

Already have Lightbend Activator (get it here)? Launch the UI then search for play-websocket in the list of templates.

Option 2: Download the play-websocket project as a zip archive

If you haven't installed Activator, you can get the code by downloading the template bundle for play-websocket.

  1. Download the Template Bundle for "Play Framework with Websocket implementation, statefull/stateless"
  2. Extract the downloaded zip file to your system
  3. The bundle includes a small bootstrap script that can start Activator. To start Lightbend Activator's UI:

    In your File Explorer, navigate into the directory that the template was extracted to, right-click on the file named "activator.bat", then select "Open", and if prompted with a warning, click to continue:

    Or from a command line:

     C:\Users\typesafe\play-websocket> activator ui 
    This will start Lightbend Activator and open this template in your browser.

Option 3: Create a play-websocket project from the command line

If you have Lightbend Activator, use its command line mode to create a new project from this template. Type activator new PROJECTNAME play-websocket on the command line.

Option 4: View the template source

The creator of this template maintains it at

Option 5: Preview the tutorial below

We've included the text of this template's tutorial below, but it may work better if you view it inside Activator on your computer. Activator tutorials are often designed to be interactive.

Preview the tutorial


With this template, you'll get a full working application that uses both stateless and statefull AKKA actors.
You can send and receive single to server, single to broadcast, server to broadcast messages. The statefull example will show you a very simple and yet powerful implementation of websocket actors that are able to retain informations such as session (uuid), number of messages, and any other data you can send through json's format.

To test the Application:
  1. Open a terminal in your project's directory
  2. Type play run
  3. Head your favourite browser to http://localhost:9000
  4. Head another window of your favourite browser to http://localhost:9000
  5. Open websockets
  6. Play with messages (echo, broadcast from client, broadcast from server)