Method do_close

boost-http/http-client.cpp:167–173

  }

  void do_close() {
    beast::error_code error;
    if (stream_.socket().shutdown(tcp::socket::shutdown_both, error)) {
      LOG(ERROR) << "failed to close http socket: " << error.message();
    }
    self_ = nullptr;
  }

  void fail(const char *what, beast::error_code ec) {
    LOG(ERROR) << "failed http client: " << what << ": " << ec.message();