val stream = connection.newStream(headerEntries("b", "banana"), true)
    val sink = stream.getSink()
    sink.write(Buffer().writeUtf8("abcde"), 5)
    stream.writeTimeout().timeout(500, TimeUnit.MILLISECONDS)
    val startNanos = System.nanoTime()
    sink.write(Buffer().writeUtf8("f"), 1)
    assertFailsWith<InterruptedIOException> {
      sink.flush() // This will time out waiting on the write window.
    }

        boolean value = random.nextBoolean();
        for (PrimitiveSink sink : sinks) {
          sink.putBoolean(value);
        }
      }
    },
    PUT_BYTE() {
      @Override
      void performAction(Random random, Iterable<? extends PrimitiveSink> sinks) {
        int value = random.nextInt();
        for (PrimitiveSink sink : sinks) {
          sink.putByte((byte) value);
        }
      }
    },

 * factory specifies what content should be expected to be read from a source or contained in a sink
 * given the content data that was used to create the source or that was written to the sink.
 *
 * <p>A single {@code SourceSinkFactory} implementation generally corresponds to one specific way of
 * creating a source or sink, such as {@link Files#asByteSource(File)}. Implementations of {@code

        sink.writeByte(ranges[rangesIndex + 2].code or 0x80)
        sink.writeByte(ranges[rangesIndex + 3].code)
      }
      126 -> {
        // Mapped inline to the sequence: [b2, b3a].
        sink.writeByte(ranges[rangesIndex + 2].code)
        sink.writeByte(ranges[rangesIndex + 3].code or 0x80)
      }
      127 -> {
        // Mapped inline to the sequence: [b2a, b3a].

  }

  private suspend fun updateLocalFile() =
    withContext(Dispatchers.IO) {
      client.newCall(request).executeAsync().use { response ->
        fileSystem.sink(publicSuffixListDotDat).buffer().use { sink ->
          sink.writeAll(response.body.source())
        }
      }
    }

  private suspend fun readImportResults(): ImportResults =
    withContext(Dispatchers.IO) {

<img src="/img/tutorial/security/image12.png">

## Den Benutzernamen überprüfen

Hier ist ein vollständigeres Beispiel.

Verwenden Sie eine Abhängigkeit, um zu überprüfen, ob Benutzername und Passwort korrekt sind.

Verwenden Sie dazu das Python-Standardmodul <a href="https://docs.python.org/3/library/secrets.html" class="external-link" target="_blank">`secrets`</a>, um den Benutzernamen und das Passwort zu überprüfen.

    assertTrue(sink.wasStreamClosed());
    assertArrayEquals(new byte[] {1, 2, 3, 4}, sink.getBytes());
  }

  public void testWrite_bytes() throws IOException {
    assertArrayEquals(new byte[0], sink.getBytes());
    sink.write(bytes);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertArrayEquals(bytes, sink.getBytes());
  }

  public void testWriteFrom_inputStream() throws IOException {

    }
    return suite;
  }

  private ByteSink sink;

  ByteSinkTester(
      ByteSinkFactory factory, byte[] data, String suiteName, String caseDesc, Method method) {
    super(factory, data, suiteName, caseDesc, method);
  }

  @Override
  protected void setUp() throws Exception {
    sink = factory.createSink();
  }

  public void testOpenStream() throws IOException {

# How-To – Rezepte

Hier finden Sie verschiedene Rezepte und „How-To“-Anleitungen zu **verschiedenen Themen**.

Die meisten dieser Ideen sind mehr oder weniger **unabhängig**, und in den meisten Fällen müssen Sie diese nur studieren, wenn sie direkt auf **Ihr Projekt** anwendbar sind.

Wenn etwas für Ihr Projekt interessant und nützlich erscheint, lesen Sie es, andernfalls überspringen Sie es einfach.

!!! tip "Tipp"

      writeHeaders(sink, response.trailers)
    }
  }

  @Throws(IOException::class)
  private fun writeHeaders(
    sink: BufferedSink,
    headers: Headers,
  ) {
    for ((name, value) in headers) {
      sink.writeUtf8(name)
      sink.writeUtf8(": ")
      sink.writeUtf8(value)
      sink.writeUtf8("\r\n")
    }
    sink.writeUtf8("\r\n")
    sink.flush()
  }