## Version 3.14.6

_2020-01-11_

 *  Fix: Don't crash if the connection is closed when sending a degraded ping. This fixes a
    regression that was introduced in OkHttp 3.14.5.


## Version 3.14.5

_2020-01-03_

 *  Fix: Degrade HTTP/2 connections after a timeout. When an HTTP/2 stream times out it may impact
    the stream only or the entire connection. With this fix OkHttp will now send HTTP/2 pings after

=== "Python 3.9+"

    ```Python hl_lines="9  15"
    {!> ../../../docs_src/request_files/tutorial001_03_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="8  14"
    {!> ../../../docs_src/request_files/tutorial001_03_an.py!}
    ```

=== "Python 3.8+ nicht annotiert"

    !!! tip "Tipp"
        Bevorzugen Sie die `Annotated`-Version, falls möglich.

    assertThat(formEncode(0)).isEqualTo("%00")
    assertThat(formEncode(1)).isEqualTo("%01")
    assertThat(formEncode(2)).isEqualTo("%02")
    assertThat(formEncode(3)).isEqualTo("%03")
    assertThat(formEncode(4)).isEqualTo("%04")
    assertThat(formEncode(5)).isEqualTo("%05")
    assertThat(formEncode(6)).isEqualTo("%06")
    assertThat(formEncode(7)).isEqualTo("%07")

=== "Python 3.9+"

    ```Python hl_lines="9  15"
    {!> ../../../docs_src/request_files/tutorial001_03_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="8  14"
    {!> ../../../docs_src/request_files/tutorial001_03_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

=== "Python 3.9+"

    ```Python hl_lines="9  15"
    {!> ../../../docs_src/request_files/tutorial001_03_an_py39.py!}
    ```

=== "Python 3.6+"

    ```Python hl_lines="8  14"
    {!> ../../../docs_src/request_files/tutorial001_03_an.py!}
    ```

=== "Python 3.6+ без Annotated"

    !!! tip "Подсказка"

 *  New: Defer constructing `Inflater` and `Deflater` instances until they are needed. This saves
    memory if web socket compression is negotiated but not used.


## Version 4.5.0-RC1

_2020-03-17_

**This release candidate turns on web socket compression.**

The [spec][rfc_7692] includes a sophisticated mechanism for client and server to negotiate

![Swagger UI interakcja](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Alternatywna dokumentacja API z <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Альтернативная документация API в <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Documentación alternativa de la API con <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a> ile beraber alternatif API dokümantasyonu.