text: package io.vertx.example.rxjava.http.client.unmarshalling;
  
  import io.vertx.example.util.Runner;
  import io.vertx.rxjava.core.AbstractVerticle;
  import io.vertx.rxjava.core.http.HttpServer;
  
  /*
   * @author <a href="http://tfox.org">Tim Fox</a>
   */
  public class Server extends AbstractVerticle {
  
    // Convenience method so you can run it in your IDE
    public static void main(String[] args) {
      Runner.runExample(Server.class);
    }
  
    @Override
    public void start() throws Exception {
      HttpServer server = vertx.createHttpServer();
      server.requestStream().toObservable().subscribe(req -> {
        req.response().putHeader("content-type", "application/json").end("{\"message\":\"Hello World\"}");
      });
      server.listen(8080);
    }
  }
  