GetRequestReactiveTest.java

import java.net.http.HttpRequest;
import java.net.http.HttpResponse.BodyHandlers;
import java.util.concurrent.Flow.Subscriber;
import java.util.concurrent.Flow.Subscription;

public class GetRequestReactiveTest {
	public static void main(String[] args) {
		HttpRequest request = HttpBinRequestBuilder.createGetRequest();

		HttpClientBuilderTest.createHttpClient()
				.sendAsync(request, BodyHandlers.fromLineSubscriber(new LinePrinter()))
				.join();
	}

	public static class LinePrinter implements Subscriber<String> {
		private Subscription subscription;

		@Override
		public void onSubscribe(Subscription subscription) {
			this.subscription = subscription;
			this.subscription.request(1);
		}

		@Override
		public void onNext(String item) {
			System.out.println("== [LinePrinter] Line received: " + item);
			this.subscription.request(1);
		}

		@Override
		public void onError(Throwable throwable) {
			System.out.println("== [LinePrinter] Line received: " + throwable);
		}

		@Override
		public void onComplete() {
			System.out.println("== [LinePrinter] Completed");
		}
	}
}