* `200` is the default status code, which means everything was "OK".
    * Another example would be `201`, "Created". It is commonly used after creating a new record in the database.
    * A special case is `204`, "No Content".  This response is used when there is no content to return to the client, and so the response must not have a body.

`app.add_middleware()` recibe una clase de middleware como primer argumento y cualquier argumento adicional que se le quiera pasar al middleware.

## Middlewares integrados { #integrated-middlewares }

**FastAPI** incluye varios middlewares para casos de uso común, veremos a continuación cómo usarlos.

/// note | Detalles Técnicos

Para los próximos ejemplos, también podrías usar `from starlette.middleware.something import SomethingMiddleware`.

   * than would be returned by reading all of the bytes (for example, some special files may return
   * a size of 0 despite actually having content when read).
   *
   * <p>In either case, for mutable sources such as files, a subsequent read may return a different
   * number of bytes if the contents are changed.
   *
   * @throws IOException if an I/O error occurs while reading the size of this source
   */

		}
		for segmentEnd > segmentStart && unicode.IsSpace(rune(path[segmentEnd-1])) {
			segmentEnd--
		}

		// Check for ".." or "."
		switch {
		case segmentEnd-segmentStart == 2 && path[segmentStart] == '.' && path[segmentStart+1] == '.':
			return true
		case segmentEnd-segmentStart == 1 && path[segmentStart] == '.':
			return true
		}
		i++
	}
	return false
}

    exit 1
  fi
  target_file=$(echo "$url" | sed -e "s#^file:/*#/#g")
  # Build format hint from MIME type for better ImageMagick compatibility
  format_hint=""
  case "${mimetype}" in
    "image/gif")  format_hint="gif:" ;;
    "image/tiff") format_hint="tiff:" ;;
    "image/png")  format_hint="png:" ;;
    "image/jpeg") format_hint="jpeg:" ;;

# Webhooks de OpenAPI { #openapi-webhooks }

Hay casos donde quieres decirle a los **usuarios** de tu API que tu aplicación podría llamar a *su* aplicación (enviando una request) con algunos datos, normalmente para **notificar** de algún tipo de **evento**.

Esto significa que en lugar del proceso normal de tus usuarios enviando requests a tu API, es **tu API** (o tu aplicación) la que podría **enviar requests a su sistema** (a su API, su aplicación).

	deleteOp := NoOp
	if latestID != globalDeploymentID() {
		return nil
	}
	if lastUpdate.Equal(bStatus.DeletedAt) {
		isMakeBucket = false
		switch {
		case len(withB) == numSites && deletedCnt == numSites:
			deleteOp = NoOp
		case len(withB) == 0 && len(missingB) == numSites:
			deleteOp = Purge
		default:
			deleteOp = MarkDelete
		}
	}
	if isMakeBucket {
		var opts MakeBucketOptions

            Clock clock = getClock(step.project);
            switch (step.name) {
                case PLAN:
                    // Planning steps should be executed out of normal execution
                    throw new IllegalStateException();
                case SETUP:
                    attachToThread(step);

 * methods of the delegate. For example, overriding {@link #add} alone <b>will not</b> change the
 * behavior of {@link #offer} which can lead to unexpected behavior. In this case, you should
 * override {@code offer} as well, either providing your own implementation, or delegating to the
 * provided {@code standardOffer} method.
 *

		return err
	}
	parsedDest, err := parseDestination(dest.Bucket)
	if err != nil {
		return err
	}
	if dest.StorageClass != "" {
		switch dest.StorageClass {
		case "STANDARD", "REDUCED_REDUNDANCY":
		default:
			return fmt.Errorf("unknown storage class %s", dest.StorageClass)
		}
	}
	parsedDest.StorageClass = dest.StorageClass
	*d = parsedDest
	return nil
}