import java.net.InetSocketAddress;
import java.net.ProxySelector;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Client {
    public static void main(String[] args)throws Exception
    {
        HttpClient client=HttpClient.newBuilder()
                .proxy(ProxySelector.of(new InetSocketAddress("127.0.0.1",1000)))
                .version(HttpClient.Version.HTTP_2)
                .build();

        HttpRequest request=HttpRequest.newBuilder(URI.create("http://127.0.0.1:2000/Test.txt"))
                .build();

        HttpResponse response=client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println("Status code: " + response.statusCode());
        System.out.println("Headers: " + response.headers().map());
        System.out.println("Body: " + response.body());

        System.out.println("========");

        response=client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println("Status code: " + response.statusCode());
        System.out.println("Headers: " + response.headers().map());
        System.out.println("Body: " + response.body());
    }
}