# Security { #security }

There are many ways to handle security, authentication and authorization.

And it normally is a complex and "difficult" topic.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

#### OkHttpClient final methods

`OkHttpClient` has 26 accessors like `interceptors()` and `writeTimeoutMillis()` that were non-final
in OkHttp 3.x and are final in 4.x. These were made non-final for use with mocking frameworks like
[Mockito][mockito]. We believe subtyping `OkHttpClient` is the wrong way to test with OkHttp. If
you must, mock `Call.Factory` which is the interface that `OkHttpClient` implements.

#### Internal API changes

* Fix nil pointer dereference in test framework ([#37583](https://github.com/kubernetes/kubernetes/pull/37583), [@mtaufen](https://github.com/mtaufen))

  * Service.Spec.HealthCheckNodePort was 'service.beta.kubernetes.io/healthcheck-nodeport' annotation.

### **Node Components**
#### Container Runtime Interface

* Datenvalidierung
* API-Annotationen und automatische Dokumentation

Und Sie müssen sie nur einmal deklarieren.

* Data validation
* API annotation and automatic documentation

And you only have to declare them once.

* Validación de datos
* Anotación de API y documentación automática

Y solo tienes que declararlos una vez.

* Validação de dados
* Anotação da API e documentação automática

Você apenas tem que declará-los uma vez.

* Validation de données.
* Annotations d'API et documentation automatique.

Et vous n'avez besoin de le déclarer qu'une fois.

 *  New: Fold `MockWebServerRule` into `MockWebServer`. This makes it easier to
    write JUnit tests with `MockWebServer`. The `MockWebServer` library now
    depends on JUnit, though it continues to work with all testing frameworks.
 *  Fix: `FormEncodingBuilder` is now consistent with browsers in which
    characters it escapes. Previously we weren’t percent-encoding commas,
    parens, and other characters.