call.execute()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("write body fail!")
    }
  }

  private fun executeSynchronously(
    path: String,
    vararg headers: String?,
  ): RecordedResponse {
    val builder = Request.Builder()
    builder.url(server.url(path))
    var i = 0
    val size = headers.size
    while (i < size) {