// Clean up metrics for connections that no longer exist
        connectionMetrics.entrySet().removeIf(entry -> {
            String key = entry.getKey();
            boolean exists = connections.stream().anyMatch(conn -> getConnectionKey(conn).equals(key));
            return !exists;
        });
    }

    /**
     * Get detailed health statistics
     */

	case authTypeStreamingSigned, authTypeStreamingSignedTrailer:
		// Initialize stream signature verifier.
		rd, s3Err = newSignV4ChunkedReader(r, rAuthType == authTypeStreamingSignedTrailer)
		if s3Err != ErrNone {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
			return
		}
	case authTypeStreamingUnsignedTrailer:
		// Initialize stream chunked reader with optional trailers.

	WantServerSideChecksumType hash.ChecksumType // if set, we compute a server-side checksum of this type

	NoDecryption                        bool      // indicates if the stream must be decrypted.
	PreserveETag                        string    // preserves this etag during a PUT call.
	NoLock                              bool      // indicates to lower layers if the caller is expecting to hold locks.

   *
   * <p><b>Java 8+ users:</b> many use cases for this method are better addressed by {@link
   * java.util.stream.Stream#filter}. This method is not being deprecated, but we gently encourage
   * you to migrate to streams.
   */
  // TODO(kevinb): how to omit that last sentence when building GWT javadoc?
  public static <E extends @Nullable Object> Set<E> filter(

    synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        // ensure file is open
        if (this.handle == null || !this.handle.isValid()) {
            // one extra acquire to keep this open till the stream is released
            this.handle =
                    this.file.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, this.options).acquire();
            return this.handle;
        }

        ArgumentCaptor<Integer> lenCap = ArgumentCaptor.forClass(Integer.class);
        verify(raf, atLeast(2)).write(any(byte[].class), anyInt(), lenCap.capture());
        assertTrue(lenCap.getAllValues().stream().allMatch(len -> len == 1));
    }

    @Test
    @DisplayName("write(short/char/int/long/float/double): correct byte lengths")
    void write_multiByteVariants_lengths() throws Exception {

    assertThat(URLConnection.getDefaultRequestProperty("X-setDefaultRequestProperty")).isNull()
  }

  /**
   * Reads `count` characters from the stream. If the stream is exhausted before `count`
   * characters can be read, the remaining characters are returned and the stream is closed.
   */
  private fun readAscii(
    inputStream: InputStream,
    count: Int,
  ): String {
    val result = StringBuilder()

 * or network should be done asynchronously.
 */
abstract class EventListener {
  /**
   * Invoked as soon as a call is enqueued or executed by a client. In case of thread or stream
   * limits, this call may be executed well before processing the request is able to begin.
   *
   * This will be invoked only once for a single [Call]. Retries of different routes or redirects

    protected String[] toStringArray(final Object value) {
        if (value instanceof String[]) {
            return (String[]) value;
        } else if (value instanceof List) {
            return ((List<?>) value).stream().map(v -> v.toString()).toArray(n -> new String[n]);
        }
        String str = DfTypeUtil.toString(value);
        if (str == null) {
            return null;
        }
        return new String[] { str };

    val inputStream = connection.getInputStream()
    assertThat(inputStream.read()).isEqualTo('a'.code)
    try {
      val byteRead = inputStream.read()
      // OpenJDK behavior: end of stream.
      assertThat(byteRead).isEqualTo(-1)
    } catch (e: ProtocolException) {
      // On Android, HttpURLConnection is implemented by OkHttp v2. OkHttp
      // treats an incomplete response body as a ProtocolException.