ServerConnection

public class ServerConnection implements ConnectionService {
   private Vertx vertx;

   public ServerConnection(Vertx vertx) {
       this.vertx = vertx;
   } 

@Override
public boolean enable(Connection configuration) {
   vertx.createNetServer().connectHandler(socket -> onConnect(configuration, socket))
        .listen(configuration.getPort(), configuration.getHost());

   return configuration.isEnabled();
}

private Handler<Buffer> onConnect(Connection configuration, NetSocket socket) {
   return buffer -> {
       configuration.getProviderService().getInfo(buffer.getString(0, buffer.length())).compose(s -> {
           socket.write(s);
           socket.write("\r\n");
           return Future.succeededFuture();
       });
   };
}

}