agora.exec
Execute w/ WebSockets
see https://github.com/akka/akka-http/blob/v10.0.7/docs/src/test/scala/docs/http/scaladsl/server/WebSocketExampleSpec.scala
Execute w/ WebSockets
see https://github.com/akka/akka-http/blob/v10.0.7/docs/src/test/scala/docs/http/scaladsl/server/WebSocketExampleSpec.scala