What is the Play 2.5.x equivalent to acceptWithActor[String, JsValue]?

Before I migrated to Play 2.5.x I used WebSocket.acceptWithActor frequently. Now I can't get my web sockets to stay open when using different input and output, in my case, input is String, output is JsValue.

My receiver before Play 2.5.x:

object Application extends Controller {     def myWebSocket = WebSocket.acceptWithActor[String, JsValue] { request =>         out => MyActor.props(out) } 

My receiver in Play 2.5.x:

@Singleton class Application @Inject() (implicit system: ActorSystem, materializer: Materializer) extends Controller {   implicit val messageFlowTransformer =                    MessageFlowTransformer.jsonMessageFlowTransformer[String, JsValue]   def myWebSocket = WebSocket.accept[String, JsValue] { request =>     ActorFlow.actorRef(out => MyActor.props(out))   } } 

In my actor preStart is called immediately followed by postStop, so this is obviously incorrect, but I can't seem to find any solution in the documentation (https://www.playframework.com/documentation/2.5.x/ScalaWebSockets). If I use WebSocket.accept[String, String] the socket stays open.

What am I doing wrong?

1 Answers

Answers 1

I've found a workarround

My controller:

    ActorFlow.actorRef[String, JsValue](out =>       MyActor.props(          out,          ...       )     ).map(_.toString) 

With this you shouln't define a custom messageflowtransformer and at actor level you can still receive strings and return JsValues.

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