val buffer = Buffer()
    operator.read(6, buffer, 21)
    operator.read(36, buffer, 1)
    operator.read(5, buffer, 5)
    operator.read(28, buffer, 8)
    operator.read(17, buffer, 10)
    operator.read(36, buffer, 2)
    operator.read(2, buffer, 4)
    operator.write(0, buffer, buffer.size)
    operator.read(0, buffer, 12)
    operator.read(47, buffer, 3)
    operator.read(45, buffer, 2)
    operator.read(47, buffer, 3)

  private fun sourceReader(source: Source?): Callable<ByteString> {
    return Callable {
      val buffer = Buffer()
      while (source!!.read(buffer, 16384) != -1L) {
      }
      source.close()
      buffer.readByteString()
    }
  }

  private fun assertFile(
    prefix: ByteString,
    upstreamSize: Long,
    metadataSize: Int,

  private val deflaterSink = DeflaterSink(deflatedBytes, deflater)

  /** Deflates [buffer] in place as described in RFC 7692 section 7.2.1. */
  @Throws(IOException::class)
  fun deflate(buffer: Buffer) {
    require(deflatedBytes.size == 0L)

    if (noContextTakeover) {
      deflater.reset()
    }

    deflaterSink.write(buffer, buffer.size)
    deflaterSink.flush()

    if (deflatedBytes.endsWith(EMPTY_DEFLATE_BLOCK)) {

  }

  @Test fun readCodePointSet() {
    val buffer = Buffer()
    buffer.writeUtf8(
      """
      |  0221
      |  0234-024F
      |  0000-001F; [CONTROL CHARACTERS]
      |  007F; DELETE
      |
      """.trimMargin(),
    )

    val rangeList = buffer.readCodePointSet()
    assertEquals(
      listOf(
        0x0221..0x0221,
        0x0234..0x024f,

    val buffer = Buffer()
    body.writeTo(buffer)
    assertThat(buffer.readUtf8()).isEqualTo(expected)
  }

  @Test
  fun buildEmptyForm() {
    val body = FormBody.Builder().build()
    val expected = ""
    assertThat(body.contentLength()).isEqualTo(expected.length.toLong())
    val buffer = Buffer()
    body.writeTo(buffer)
    assertThat(buffer.readUtf8()).isEqualTo(expected)
  }

  ): Long {
    var byteCount = 0L
    val buffer: Buffer = if (countBytes) Buffer() else sink!!.buffer

    for (i in 0 until encodedNames.size) {
      if (i > 0) buffer.writeByte('&'.code)
      buffer.writeUtf8(encodedNames[i])
      buffer.writeByte('='.code)
      buffer.writeUtf8(encodedValues[i])
    }

    if (countBytes) {
      byteCount = buffer.size
      buffer.clear()
    }

    return byteCount
  }

  private val inflaterSource = InflaterSource(deflatedBytes, inflater)

  /** Inflates [buffer] in place as described in RFC 7692 section 7.2.2. */
  @Throws(IOException::class)
  fun inflate(buffer: Buffer) {
    require(deflatedBytes.size == 0L)

    if (noContextTakeover) {
      inflater.reset()
    }

    deflatedBytes.writeAll(buffer)
    deflatedBytes.writeInt(OCTETS_TO_ADD_BEFORE_INFLATION)

import okhttp3.logging.internal.isProbablyUtf8
import okio.Buffer
import org.junit.jupiter.api.Test

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()

        val read = delegate.read(buffer, byteCount)
        if (read != -1L) {
          sink.write(buffer.readByteString().toAsciiUppercase())
        }
        return read
      }
    }
  }

      val name = "SocksProxy $fromAddress to $toAddress"
      threadName(name) {
        val buffer = Buffer()
        try {
          sink.use {
            source.use {
              while (true) {
                val byteCount = source.read(buffer, 8192L)
                if (byteCount == -1L) break
                sink.write(buffer, byteCount)
                sink.emit()
              }
            }
          }