@Override
  public void stop() {
    if (executorService != null) {
      executorService.shutdown();
    }
    httpRequester = null;
    connected = false;
  }
Stops communication with and closes all connections to the remote HTTP server (service).
geode-gfsh/src/main/java/org/apache/geode/management/internal/web/shell/HttpOperationInvoker.java