akka-http-websockets

WebSockets
Scala
Akka
Akka Http
Akka Stream
Circe Scala Test

Used "Dark WebSocket Terminal" Chrome browser extension for testing.

IntelliJ IDEA 2018.1.4 (Community Edition)

sbt run

Feedback from 2019-8-29:

1. Replace LazyLogging, ActorLogging with LoggingAdapter.
2. Don't use Ask (?) pattern. Map callback Future with pipeTo(self)