https://github.com/jrudolph/pekko-http-scala-js-websocket-chat

An example app that integrates pekko-http and scala-js to implement a websocket chat
https://github.com/jrudolph/pekko-http-scala-js-websocket-chat

Last synced: 3 days ago
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An example app that integrates pekko-http and scala-js to implement a websocket chat

• Host: GitHub
• URL: https://github.com/jrudolph/pekko-http-scala-js-websocket-chat
• Owner: jrudolph
• License: mit
• Created: 2015-04-27T14:43:34.000Z (almost 10 years ago)
• Default Branch: main
• Last Pushed: 2024-10-03T08:58:12.000Z (5 months ago)
• Last Synced: 2025-02-10T07:04:43.376Z (10 days ago)
• Language: Scala
• Homepage:
• Size: 500 KB
• Stars: 344
• Watchers: 22
• Forks: 59
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Pekko HTTP / Scala.js / Websocket Chat App

A simple chat app that uses a pekko-http backend and a scala.js frontend to implement a simple

websocket based chat application.

To run:

```

sbt

> project backend

> reStart

```

Navigate to [http://localhost:8080/](http://localhost:8080/).

You can build a fully self-contained jar using `assembly` in the backend project.

## Configuration

You can set `app.interface` and `app.port` in `application.conf` to configure where the server

should listen to.

This also works on the command line using JVM properties, e.g. using `re-start`:

```

> re-start --- -Dapp.interface=0.0.0.0 -Dapp.port=8080

```

will start the server listening on all interfaces.

## CLI

The `cli` project contains a command line client for the chat to demonstrate the Websocket client and

how to deal with console input in a streaming way.

![CLI Screencast](https://github.com/jrudolph/pekko-http-scala-js-websocket-chat/raw/master/docs/cli-screencast.gif)

It runs best directly from a terminal.

Start the server as explained above. Then, to build a fat jar use

```

sbt

> project cli

> assembly

```

Run

```

java -jar cli/target/cli.jar

```

or 

```

./chat

```

Here's another screencast that shows live tab completion in action:

![CLI completion screencast](https://github.com/jrudolph/pekko-http-scala-js-websocket-chat/raw/master/docs/cli-completion.gif)

## Known issues

### The "frontend"

There isn't more than absolutely necessary there right now.