Nsryjdtyk

The problem is when I return chunked response following documentation with a number of random lines, not all of these lines appear in browser (Google Chrome, Postman). E.g. if I send 8192 lines the browser will show only ~7k or even ~4k. My goal is to generate large CSV file using this kind of approach.

public Result test() {

    var source = Source.<ByteString>actorRef(256, OverflowStrategy.dropNew())

            .mapMaterializedValue(actor -> {

                new Thread(new MyRunnable(actor)).start();

                return NotUsed.getInstance();

            });



    return ok().chunked(source);

}



// ------



public class MyRunnable implements Runnable {



    private final ActorRef actor;



    public MyRunnable(ActorRef actor) {

        this.actor = actor;

    }



    public void run() {

        for (var i = 0; i < 1024 * 8; i++) {

            var line = String.format("%d %sn", i + 1, Utils.generateRandomString(64));

            actor.tell(ByteString.fromString(line), null);

        }



        actor.tell(new Status.Success(NotUsed.getInstance()), null);

    }



}