how to make several request to websocket server using akka client side websocket - scala

Question

i am new to akka websockets and learning akka client side websockets https://doc.akka.io/docs/akka-http/current/client-side/websocket-support.html
i am using websockets for my webrtc janus server for that i have URL and i need to send many messages to it and receive a different response each time and send further messages based on that response here i am confused how can we do that by looking at the example code i think i need to repeat the below code every time i need to send a message to the server but it does not seemed correct si what is the right approach?
example in my case
websocket server is running at
ws://0.0.0.0:8188
first i will send a message to the server for initiating the sessionID
request# 1
{
"janus" : "create",
"transaction" : "<random alphanumeric string>"
}
the server will respond with the session id
response #1
{
"janus": "success",
"session_id": 2630959283560140,
"transaction": "asqeasd4as3d4asdasddas",
"data": {
"id": 4574061985075210
}
}
then based on id 4574061985075210 i will send another message and receive further info
request # 02 {
}
response # 02 {
}
----
how can i achieve this with akka client side websockets
here is my code
import akka.http.scaladsl.model.ws._
import scala.concurrent.Future
object WebSocketClientFlow {
def main(args: Array[String]) = {
implicit val system = ActorSystem()
implicit val materializer = ActorMaterializer()
import system.dispatcher
val incoming: Sink[Message, Future[Done]] =
Sink.foreach[Message] {
case message: TextMessage.Strict =>
println(message.text)
//suppose here based on the server response i need to send another message to the server and so on do i need to repeat this same code here again ?????
}
val outgoing = Source.single(TextMessage("hello world!"))
val webSocketFlow = Http().webSocketClientFlow(WebSocketRequest("ws://echo.websocket.org"))
val (upgradeResponse, closed) =
outgoing
.viaMat(webSocketFlow)(Keep.right) // keep the materialized Future[WebSocketUpgradeResponse]
.toMat(incoming)(Keep.both) // also keep the Future[Done]
.run()
val connected = upgradeResponse.flatMap { upgrade =>
if (upgrade.response.status == StatusCodes.SwitchingProtocols) {
Future.successful(Done)
} else {
throw new RuntimeException(s"Connection failed: ${upgrade.response.status}")
}
}
connected.onComplete(println)
closed.foreach(_ => println("closed"))
}
}

Answer 1

I would recommend you goto this website and check out the documentation. IT has all the information you need.
https://doc.akka.io/docs/akka/current/typed/actors.html