import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import java.security.KeyStore;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.net.ssl.*;

static class MyHTTPD extends NanoHTTPD {
  public MyHTTPD(int port) {
    super(port);
  }

  public Response serve(String uri, Method method,
    Map<String, String> header, Map<String, String> parms,
    Map<String, String> files) {
    S remoteAddr  = header.get("remote-addr");
    print(formatDateAndTime() + " Serving URI: " + quote(uri) + " to: " + remoteAddr);
    
    /*if (nempty(remoteAddr) &&
      isTrue(callOpt(mc(), "isBlockedIP", remoteAddr))) {
      print("BLOCKED IP.");
      ret serve404();
    }*/
    
    try {
      Response response = cast callOpt(getMainClass(), "serve", uri, method, header, parms, files);
      if (response != null) ret response;
      S html = callHtmlMethod(getMainClass(), uri, parms);
      if (html != null)
        ret serveHTML(html);
      ret serve404();
    } catch (Throwable e) {
      printStackTrace(e);
      ret serveHTML("ERROR.");
    }
  }
}

static MyHTTPD serveHttp_server;
static int serveHttp_port = 8888;

static new TreeSet<String> serveHttp_peers;

static int serveHttp(int port) ctex {
  serveHttp_port = port;
  serveHttp_server = new MyHTTPD(port);
  serveHttp_server.start();
  ret serveHttp_port();
}

// serve on random port, return port number used
static int serveHttp() {
  serveHttp(0);
  ret serveHttp_port();
}

static int serveHttp_port() {
  ret serveHttp_server == null ? 0 : serveHttp_server.getListeningPort();
}

static void cleanMeUp_serveHttp() {
  if (serveHttp_server != null) {
    serveHttp_server.stop();
    serveHttp_server = null;
  }
}