shouldntImpactConnection[Settings.INITIAL_WINDOW_SIZE] = 3368
    peer.sendFrame().settings(initial)
    peer.acceptFrame() // ACK
    peer.sendFrame().settings(shouldntImpactConnection)
    peer.acceptFrame() // ACK 2
    peer.acceptFrame() // HEADERS
    peer.play()
    val connection = connect(peer)

    // Verify the peer received the second ACK.
    val ackFrame = peer.takeFrame()

**Broncode**: <a href="https://github.com/fastapi/fastapi" target="_blank">https://github.com/tiangolo/fastapi</a>

---

FastAPI is een modern, snel (zeer goede prestaties), web framework voor het bouwen van API's in Python, gebruikmakend van standaard Python type-hints.

De belangrijkste kenmerken zijn:

* **Snel**: Zeer goede prestaties, vergelijkbaar met **NodeJS** en **Go** (dankzij Starlette en Pydantic). [Een van de snelste beschikbare Python frameworks](#prestaties).

// Nu kan het de omgevingsvariabele lezen

Hello Wade Wilson from Python

// De omgevingsvariabelen bestaan daarna niet meer
$ python main.py

Hello World from Python
```

</div>

/// tip

Je kunt er meer over lezen op <a href="https://12factor.net/config" class="external-link" target="_blank">The Twelve-Factor App: Config</a>.

///

## Types en Validatie

    peer.play()

    // Play it back.
    val connection =
      Http2Connection
        .Builder(true, TaskRunner.INSTANCE)
        .socket(peer.openSocket().asBufferedSocket(), "peer")
        .pushObserver(Http2ConnectionTest.IGNORE)
        .listener(realConnection)
        .build()
    connection.start(sendConnectionPreface = false)

    // verify the peer received the ACK
    val ackFrame = peer.takeFrame()

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http2

/**
 * Settings describe characteristics of the sending peer, which are used by the receiving peer.
 * Settings are [connection][Http2Connection] scoped.
 */
class Settings {
  /** Bitfield of which flags that values. */
  private var set: Int = 0

  /** Flag values. */

        this.initialCredits = initialCredits;
    }

    /**
     * Get number of credits granted by peer
     *
     * @return granted credits
     */
    public int getCreditsGranted() {
        return creditsGranted;
    }

    /**
     * Set number of credits granted by peer
     *
     * @param creditsGranted credits granted
     */
    public void setCreditsGranted(int creditsGranted) {

 *    from the peer.
 *
 * Web sockets may fail due to HTTP upgrade problems, connectivity problems, or if either peer
 * chooses to short-circuit the graceful shutdown process:
 *
 *  * **Canceled:** the web socket connection failed. Messages that were successfully enqueued by
 *    either peer may not have been transmitted to the other.
 *

  /** Returns a possibly-empty list of certificates that identify this peer. */
  @get:JvmName("localCertificates") val localCertificates: List<Certificate>,
  // Delayed provider of peerCertificates, to allow lazy cleaning.
  peerCertificatesFn: () -> List<Certificate>,
) {
  /** Returns a possibly-empty list of certificates that identify the remote peer. */
  @get:JvmName("peerCertificates")

 * limitations under the License.
 */
package okhttp3

import okio.ByteString

abstract class WebSocketListener {
  /**
   * Invoked when a web socket has been accepted by the remote peer and may begin transmitting
   * messages.
   */
  open fun onOpen(
    webSocket: WebSocket,
    response: Response,
  ) {
  }

  /** Invoked when a text (type `0x1`) message has been received. */

Para asegurarte de que no devuelves más datos de los que deberías, lee la documentación para [Tutorial - Modelo de Response - Tipo de Retorno](../tutorial/response-model.md){.internal-link target=_blank}.

## Etiquetas de Documentación - OpenAPI