private val delegate: Sink,
  private val bytesPerPeriod: Long,
  private val periodDelayNanos: Long,
) : Sink by delegate {
  private var bytesWrittenSinceLastDelay = 0L

  override fun write(
    source: Buffer,
    byteCount: Long,
  ) {
    var bytesLeft = byteCount

    while (bytesLeft > 0) {
      if (bytesWrittenSinceLastDelay == bytesPerPeriod) {
        flush()
        sleepNanos(periodDelayNanos)

  }

  private fun uppercaseSink(sink: Sink): Sink {
    return object : ForwardingSink(sink) {
      @Throws(IOException::class)
      override fun write(
        source: Buffer,
        byteCount: Long,
      ) {
        val bytes = source.readByteString(byteCount)
        delegate.write(
          Buffer()
            .write(bytes.toAsciiUppercase()),
          byteCount,
        )
      }
    }
  }

  override fun sink(
    path: Path,
    mustCreate: Boolean,
  ): Sink {
    log("sink($path)")

    return super.sink(path, mustCreate)
  }

  override fun source(file: Path): Source {
    log("source($file)")

    return super.source(file)
  }

        override fun contentType() = original.contentType()

        override fun contentLength() = original.contentLength()

        override fun source() = uppercase(original.source()).buffer()
      }
    }

    private fun uppercase(original: Source): Source {
      return object : ForwardingSource(original) {
        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {

  private val serverReader =
    WebSocketReader(
      isClient = false,
      source = data,
      frameCallback = callback.asFrameCallback(),
      perMessageDeflate = false,
      noContextTakeover = false,
    )
  private val serverReaderWithCompression =
    WebSocketReader(
      isClient = false,
      source = data,
      frameCallback = callback.asFrameCallback(),
      perMessageDeflate = true,

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

        // Copy sources to sinks in both directions.
        val toSource = toSocket.source().buffer()
        val toSink = toSocket.sink().buffer()
        openSockets.add(toSocket)
        transfer(fromAddress, toAddress, fromSource, toSink)
        transfer(fromAddress, toAddress, toSource, fromSink)
      }

    val call = client.newCall(request)
    call.timeout().timeout(250, TimeUnit.MILLISECONDS)
    val response = call.execute()
    Thread.sleep(500)
    assertFailsWith<IOException> {
      response.body.source().readUtf8()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("timeout")
      assertThat(call.isCanceled()).isTrue()
    }
  }

  @Test
  fun timeoutReadingResponseWithEnqueue() {

   * ```
   *  0221
   *  0234-024F
   *  0000-001F; [CONTROL CHARACTERS]
   *  007F; DELETE
   * ```
   */
  fun readCodePointSet(path: Path): RangeListCodePointSet {
    fileSystem.source(path).buffer().use { source ->
      return source.readCodePointSet()
    }
  }

  /**
   * Reads a set of mapping lines like the following:
   *
   * ```
   *    180C; ; Map to nothing
   *    0041; 0061; Case map

   * most [BufferedSource] instances, but not of [Buffer].
   */
  private fun responseBody(content: String): ResponseBody {
    val data = Buffer().writeUtf8(content)
    val source: Source =
      object : Source {
        var closed = false

        override fun close() {
          closed = true
        }

        override fun read(
          sink: Buffer,
          byteCount: Long,