<summary>Acerca del comando <code>fastapi dev main.py</code>...</summary>

El comando `fastapi dev` lee tu archivo `main.py`, detecta la app **FastAPI** en él y arranca un servidor usando <a href="https://www.uvicorn.dev" class="external-link" target="_blank">Uvicorn</a>.

Por defecto, `fastapi dev` comenzará con auto-recarga habilitada para el desarrollo local.

```

Asegúrate de siempre usar la **forma exec** para garantizar que FastAPI pueda cerrarse de manera adecuada y que [los eventos de lifespan](../advanced/events.md){.internal-link target=_blank} sean disparados.

Puedes leer más sobre esto en las <a href="https://docs.docker.com/reference/dockerfile/#shell-and-exec-form" class="external-link" target="_blank">documentación de Docker para formas de shell y exec</a>.

    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()

 *    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.
 *

 * 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. */

  /** 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")

        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) {

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 { #documentation-tags-openapi }

 * 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. */

     * the held certificate, further certificates are included in the handshake so the peer can
     * build a trusted path to a trusted root certificate.
     *
     * The chain should include all intermediate certificates but does not need the root certificate
     * that we expect to be known by the remote peer. The peer already has that certificate so
     * transmitting it is unnecessary.
     */
    fun heldCertificate(