val byteString = source.readByteString(bytesLeft)
    return BitString(byteString, unusedBitCount)
  }

  fun readOctetString(): ByteString {
    if (bytesLeft == -1L || constructed) {
      throw ProtocolException("constructed octet strings not supported for DER")
    }
    return source.readByteString(bytesLeft)
  }

  fun readUtf8String(): String {

    write(data)
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )
    val buffer = Buffer()
    operator.read(0, buffer, data.size.toLong())
    assertThat(buffer.readByteString()).isEqualTo(data)
  }

  @Test
  fun largeWrite() {
    val data = randomByteString(1000000)
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )

        throw IOException("Required SETTINGS preface not received")
      }
    } else {
      // The server reads the CONNECTION_PREFACE byte string.
      val connectionPreface = source.readByteString(CONNECTION_PREFACE.size.toLong())
      if (logger.isLoggable(FINE)) logger.fine(format("<< CONNECTION ${connectionPreface.hex()}"))
      if (CONNECTION_PREFACE != connectionPreface) {

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

    assertThat(encodedLength(data).toLong()).isEqualTo(encodeBuffer.size)
    val decodeBuffer = Buffer()
    decode(encodeBuffer, encodeBuffer.size, decodeBuffer)
    assertEquals(data, decodeBuffer.readByteString())
  }

    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,
        )
      }
    }
  }

        .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()

    private var partCount = 0
    private var closed = false

    )

    val newCases = mutableListOf<Case>()
    for (case in story.cases) {
      hpackWriter.writeHeaders(case.headersList)
      newCases += case.copy(wire = bytesOut.readByteString())
    }

    testDecoder(story.copy(cases = newCases))
  }

  companion object {
    private val RAW_DATA = arrayOf("raw-data")
  }

  // Consume and discard the response body.
  response.body().source().readByteString();
}

System.out.println("REQUEST 2 (pooled connection)");
try (Response response = client.newCall(request).execute()) {
  // Consume and discard the response body.
  response.body().source().readByteString();
}
```

And the listener prints the corresponding events:

```
REQUEST 1 (new connection)

        validateCloseCode(code)
      }
      payload =
        Buffer().run {
          writeShort(code)
          if (reason != null) {
            write(reason)
          }
          readByteString()
        }
    }

    try {
      writeControlFrame(OPCODE_CONTROL_CLOSE, payload)
    } finally {
      writerClosed = true
    }
  }

  @Throws(IOException::class)