return false;
    }
    try {
      Class.forName("com.google.appengine.api.utils.SystemProperty");
    } catch (ClassNotFoundException e) {
      return false;
    }
    try {
      // If the current environment is null, we're not inside AppEngine.
      return Class.forName("com.google.apphosting.api.ApiProxy")
              .getMethod("getCurrentEnvironment")

        }

        // Write a frame.
        val length = (end - start).toInt()
        outputStream.write(outBytes, start.toInt(), length)

        // If the last frame was truncated, immediately close the connection.
        if (truncated) {
          socket.close()
        }
      } else {
        // read a frame
        val inFrame = InFrame(i, reader)

      sendBuffer.write(source, byteCount)
      while (sendBuffer.size >= EMIT_BUFFER_SIZE) {
        emitFrame(false)
      }
    }

    /**
     * Emit a single data frame to the connection. The frame's size be limited by this stream's
     * write window. This method will block until the write window is nonempty.
     */
    @Throws(IOException::class)

	for i := 0; i < len; i++ {
		// second return value is "more", not "ok"
		frame, _ := frames.Next()
		if (!strings.HasPrefix(frame.File, gormSourceDir) ||
			strings.HasSuffix(frame.File, "_test.go")) && !strings.HasSuffix(frame.File, ".gen.go") {
			return string(strconv.AppendInt(append([]byte(frame.File), ':'), int64(frame.Line), 10))
		}
	}

	return ""
}

func IsValidDBNameChar(c rune) bool {

import okhttp3.internal.http2.Http2.FLAG_END_HEADERS
import okhttp3.internal.http2.Http2.FLAG_END_STREAM
import okhttp3.internal.http2.Http2.FLAG_NONE
import okhttp3.internal.http2.Http2.INITIAL_MAX_FRAME_SIZE
import okhttp3.internal.http2.Http2.TYPE_CONTINUATION
import okhttp3.internal.http2.Http2.TYPE_DATA
import okhttp3.internal.http2.Http2.TYPE_GOAWAY
import okhttp3.internal.http2.Http2.TYPE_HEADERS

    assertThat(client.canceled).isFalse()

    taskFaker.advanceUntil(ns(RealWebSocket.CANCEL_AFTER_CLOSE_MILLIS))
    assertThat(client.canceled).isTrue()

    client.processNextFrame() // This won't get a frame, but it will get a closed pipe.
    client.listener.assertFailure(IOException::class.java, "canceled")
    taskFaker.runTasks()
  }

  @Test
  fun clientCloseCancelsConnectionAfterCustomTimeout() {

    val DEFAULT_SETTINGS =
      Settings().apply {
        set(Settings.INITIAL_WINDOW_SIZE, DEFAULT_INITIAL_WINDOW_SIZE)
        set(Settings.MAX_FRAME_SIZE, Http2.INITIAL_MAX_FRAME_SIZE)
      }

    const val INTERVAL_PING = 1
    const val DEGRADED_PING = 2
    const val AWAIT_PING = 3
    const val DEGRADED_PONG_TIMEOUT_NS = 1_000_000_000 // 1 second.
  }

	const fin = true
	var frame ws.Frame
	if s.ClientSide() {
		// We do not need to copy the payload, since we own it.
		payload := p

		frame = ws.NewFrame(op, fin, payload)
		frame = ws.MaskFrameInPlace(frame)
	} else {
		frame = ws.NewFrame(op, fin, p)
	}

	return ww.writeFrame(w, frame)
}

// writeFrame writes frame binary representation into w.

!!! note "Détails techniques"
    Vous pouvez également utiliser `from starlette.responses import JSONResponse`.

    Pour plus de commodités, **FastAPI** fournit les objets `starlette.responses` sous forme d'un alias accessible par `fastapi.responses`. Mais la plupart des réponses disponibles proviennent directement de Starlette. Il en est de même avec l'objet `statut`.

## Documents OpenAPI et API

   * structures.
   *
   * We make such subtle calls in [okhttp3.internal.ws.MessageInflater] because we try to read a
   * compressed stream that is terminated in a web socket frame even though the DEFLATE stream is
   * not terminated.
   *
   * Use this method to create a degenerate Okio Buffer where each byte is in a separate segment of
   * the internal list.
   */
  @JvmStatic