val future1 = executor.submit(sourceReader(relay.newSource()))
    val future2 = executor.submit(sourceReader(relay.newSource()))
    Thread.sleep(500)
    sink.writeUtf8("abcdefghij")
    Thread.sleep(500)
    sink.writeUtf8("klmnopqrst")
    sink.close()
    assertThat<ByteString>(future1.get())
      .isEqualTo("abcdefghijklmnopqrst".encodeUtf8())
    assertThat<ByteString>(future2.get())

  }

  @Test fun exceptionRule() {
    val exception =
      Buffer()
        .writeUtf8("my.square.jp\n")
    val buffer =
      Buffer()
        .writeUtf8("*.jp\n")
        .writeUtf8("*.square.jp\n")
        .writeUtf8("example.com\n")
        .writeUtf8("square.com\n")
    publicSuffixDatabase.setListBytes(buffer.readByteArray(), exception.readByteArray())

        randomAccessFile!!.getChannel(),
      )
    val bufferA = Buffer()
    val bufferB = Buffer()
    bufferA.writeUtf8("Dodgson!\n")
    operatorA.write(0, bufferA, 9)
    bufferB.writeUtf8("You shouldn't use my name.\n")
    operatorB.write(9, bufferB, 27)
    bufferA.writeUtf8("Dodgson, we've got Dodgson here!\n")
    operatorA.write(36, bufferA, 33)
    operatorB.read(0, bufferB, 9)

    bytesIn.writeUtf8("custom-foo")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")
    bytesIn.writeByte(0x40) // Literal indexed
    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-bar")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")

      |mnop
      |
      |--simple boundary--
      """.trimMargin()
        .replace("\n", "\r\n")

    val parts =
      MultipartReader(
        boundary = "simple boundary",
        source = Buffer().writeUtf8(multipart),
      )
    assertThat(parts.boundary).isEqualTo("simple boundary")

    val partAbc = parts.nextPart()!!
    assertThat(partAbc.headers).isEqualTo(
      headersOf(
        "Content-Type",

      object : RequestBody() {
        override fun contentType() = MEDIA_TYPE_MARKDOWN

        override fun writeTo(sink: BufferedSink) {
          sink.writeUtf8("Numbers\n")
          sink.writeUtf8("-------\n")
          for (i in 2..997) {
            sink.writeUtf8(String.format(" * $i = ${factor(i)}\n"))
          }
        }

        private fun factor(n: Int): String {
          for (i in 2 until n) {

      requestBody.writeUtf8("request A\n")
      requestBody.flush()
      val responseBody = response.body.source()
      assertThat(responseBody.readUtf8Line())
        .isEqualTo("response B")
      requestBody.writeUtf8("request C\n")
      requestBody.flush()
      assertThat(responseBody.readUtf8Line())
        .isEqualTo("response D")
      requestBody.writeUtf8("request E\n")
      requestBody.flush()

class IsProbablyUtf8Test {
  @Test fun isProbablyUtf8() {
    assertThat(Buffer().isProbablyUtf8()).isTrue()
    assertThat(Buffer().writeUtf8("abc").isProbablyUtf8()).isTrue()
    assertThat(Buffer().writeUtf8("new\r\nlines").isProbablyUtf8()).isTrue()
    assertThat(Buffer().writeUtf8("white\t space").isProbablyUtf8()).isTrue()
    assertThat(Buffer().writeByte(0x80).isProbablyUtf8()).isTrue()

    requestLine: String,
  ) {
    check(state == STATE_IDLE) { "state: $state" }
    sink.writeUtf8(requestLine).writeUtf8("\r\n")
    for (i in 0 until headers.size) {
      sink.writeUtf8(headers.name(i))
        .writeUtf8(": ")
        .writeUtf8(headers.value(i))
        .writeUtf8("\r\n")
    }
    sink.writeUtf8("\r\n")
    state = STATE_OPEN_REQUEST_BODY
  }

        sink.writeUtf8(url.toString()).writeByte('\n'.code)
        sink.writeUtf8(requestMethod).writeByte('\n'.code)
        sink.writeDecimalLong(varyHeaders.size.toLong()).writeByte('\n'.code)
        for (i in 0 until varyHeaders.size) {
          sink.writeUtf8(varyHeaders.name(i))
            .writeUtf8(": ")
            .writeUtf8(varyHeaders.value(i))
            .writeByte('\n'.code)