class Faraday::Adapter::HTTPClient

def ssl_cert_store(ssl)
  return ssl[:cert_store] if ssl[:cert_store]
  # Memoize the cert store so that the same one is passed to
  # HTTPClient each time, to avoid resyncing SSL sesions when
  # it's changed
  @cert_store ||= begin
    # Use the default cert store by default, i.e. system ca certs
    cert_store = OpenSSL::X509::Store.new
    cert_store.set_default_paths
    cert_store
  end
end