Http2Connection.OKHTTP_CLIENT_WINDOW_SIZE.toLong(),
    )
    val read = response1.body.source().read(ByteArray(8192))
    assertThat(read).isEqualTo(8192)

    // Make a second call that should transmit the response headers. The response body won't be
    // transmitted until the flow-control window is updated from the first request.
    val call2 = client.newCall(Request(server.url("/")))
    val response2 = call2.execute()