how to read tcp stream using scala - scala

Question

I have a java jar that generates the tcp stream on particular port.
I cam run the using java command like java -jar runner.jar and this start producing the stream of message on port 8888.
When I do nc -l 8888 I can see the messages.
I want to read this stream using scala and another framework or tool like akka, akka-stream.
Can anyone help me understand the best tool, framework or any other technique to read this tcp stream.
I tried using akka stream with following code :-
implicit val system = ActorSystem()
implicit val mater = ActorMaterializer() val ss = Tcp().outgoingConnection("127.0.0.1", 8888)
.to(Sink.foreach(println(_)))
Source.empty.to(ss).run()
I also tried
Tcp().outgoingConnection(new InetSocketAddress("127.0.0.1", 8888))
.runWith(Source.maybe[ByteString], Sink.foreach(bs => println(bs.utf8String)))
This doesn't work.
I only need to read the messages and process on my own.
Thanks

Answer 1

As I understand you want to setup TCP server, here is example of TCP Echo using akka streams
def server(system: ActorSystem, address: String, port: Int): Unit = {
implicit val sys = system
import system.dispatcher
implicit val materializer = ActorMaterializer()
val handler = Sink.foreach[Tcp.IncomingConnection] { conn =>
println("Client connected from: " + conn.remoteAddress)
conn handleWith Flow[ByteString]
}
val connections = Tcp().bind(address, port)
val binding = connections.to(handler).run()
binding.onComplete {
case Success(b) =>
println("Server started, listening on: " + b.localAddress)
case Failure(e) =>
println(s"Server could not bind to $address:$port: ${e.getMessage}")
system.terminate()
}
}