Buffer()
        .writeUtf8("--")
        .writeUtf8(boundary)
        .readByteString()

    /**
     * This delimiter typically precedes all subsequent parts. It may also precede the first part
     * if the body contains a preamble.
     */
    private val crlfDashDashBoundary =
      Buffer()
        .writeUtf8("\r\n--")
        .writeUtf8(boundary)
        .readByteString()

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

        entry.readable = true
        writeUtf8(CLEAN).writeByte(' '.code)
        writeUtf8(entry.key)
        entry.writeLengths(this)
        writeByte('\n'.code)
        if (success) {
          entry.sequenceNumber = nextSequenceNumber++
        }
      } else {
        lruEntries.remove(entry.key)
        writeUtf8(REMOVE).writeByte(' '.code)
        writeUtf8(entry.key)
        writeByte('\n'.code)
      }

        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)

    vararg bodyLines: String,
  ) {
    filesystem.write(journalFile) {
      writeUtf8(
        """
        |$magic
        |$version
        |$appVersion
        |$valueCount
        |$blank
        |
        """.trimMargin(),
      )
      for (line in bodyLines) {
        writeUtf8(line)
        writeUtf8("\n")
      }
    }
  }

        val utf8 = IDENTITY.encode(codePoint).encodeUtf8()
        val percentEncoded = Buffer()
        for (i in 0 until utf8.size) {
          percentEncoded
            .writeUtf8("%")
            .writeUtf8(ByteString.of(utf8[i]).hex().uppercase())
        }
        return percentEncoded.readUtf8()
      }
    },

    /** URLs that contain this character in this component are invalid.  */

fun Headers.parseChallenges(headerName: String): List<Challenge> {
  val result = mutableListOf<Challenge>()
  for (h in 0 until size) {
    if (headerName.equals(name(h), ignoreCase = true)) {
      val header = Buffer().writeUtf8(value(h))
      try {
        header.readChallengeHeader(result)
      } catch (e: EOFException) {
        Platform.get().log("Unable to parse challenge", Platform.WARN, e)
      }
    }
  }
  return result
}

      content: String,
      chunkSize: Int,
    ) {
      setBody(response, Buffer().writeUtf8(content), chunkSize)
    }
  }

  /** Returns a gzipped copy of `bytes`.  */
  fun gzip(data: String): Buffer {
    val result = Buffer()
    val sink = GzipSink(result).buffer()
    sink.writeUtf8(data)
    sink.close()
    return result
  }

  companion object {

        socket.sink.buffer().use { sink ->
          socket.source.buffer().use { source ->
            sink.writeUtf8("client says hello\n")
            sink.flush()

            assertThat(source.readUtf8Line()).isEqualTo("server says hello")

            sink.writeUtf8("client says goodbye\n")
            sink.flush()

            assertThat(source.readUtf8Line()).isEqualTo("server says goodbye")

  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()
  }

  /** Returns a sink that applies throttling and disconnecting. */
  private fun Sink.withThrottlingAndSocketEffect(