val sink1 = stream1.sink.buffer()
    val sink2 = stream2.sink.buffer()
    sink1.writeUtf8("abc")
    assertFailsWith<IOException> {
      sink2.writeUtf8("abc")
      sink2.flush()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("stream was reset: REFUSED_STREAM")
    }
    sink1.writeUtf8("def")
    sink1.close()
    assertFailsWith<ConnectionShutdownException> {

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

              override fun contentType(): MediaType? = null

              override fun writeTo(sink: BufferedSink) {
                try {
                  Thread.sleep(requestBodyDelay)
                  sink.writeUtf8("abc")
                } catch (e: InterruptedException) {
                  throw InterruptedIOException()
                }
              }
            },
          ).build(),
      )

  }

  private fun gzip(bytes: String): Buffer {
    val bytesOut = Buffer()
    val sink = GzipSink(bytesOut).buffer()
    sink.writeUtf8(bytes)
    sink.close()
    return bytesOut
  }

  internal inner class AsyncRequest(
    val path: String,
    val countDownLatch: CountDownLatch,
  ) : Runnable {
    override fun run() {