assertThat(connectionAcquired.connection.protocol())
        .isEqualTo(expectedProtocol)
    }
    val callFailed = listener.removeUpToEvent<CallFailed>()
    assertThat(callFailed.ioe).isNotNull()
    assertThat(request.ioe).isNotNull()
  }

  private inner class NonCompletingRequestBody : RequestBody() {
    private val chunk: ByteArray? = ByteArray(1024 * 1024)
    var ioe: IOException? = null