peer.acceptFrame() // HEADERS STREAM 3
    peer.sendFrame().windowUpdate(3, 5)
    peer.acceptFrame() // DATA STREAM 3 "abcde"
    peer.sendFrame().windowUpdate(3, 5)
    peer.acceptFrame() // DATA STREAM 3 "fghi"
    peer.play()

    // Play it back.
    val connection = connect(peer)
    connection.writePingAndAwaitPong() // Ensure the SETTINGS have been received.

  @ArgumentsSource(ProtocolParamProvider::class)
  fun noDefaultContentLengthOnStreamingPost(
    protocol: Protocol,
    mockWebServer: MockWebServer,
  ) {
    setUp(protocol, mockWebServer)
    val postBytes = "FGHIJ".toByteArray()
    server.enqueue(MockResponse(body = "ABCDE"))
    val call =
      client.newCall(
        Request(
          url = server.url("/foo"),
          body =
            object : RequestBody() {

    assertThat(
      Headers.Builder()
        .add("abc", "def")
        .build()
        .byteCount(),
    ).isEqualTo(10L)
    assertThat(
      Headers.Builder()
        .add("abc", "def")
        .add("ghi", "jkl")
        .build()
        .byteCount(),
    ).isEqualTo(20L)
  }

  @Test fun addDate() {
    val expected = Date(0L)
    val headers =
      Headers.Builder()
        .add("testDate", expected)

    assertThat(source1.readUtf8(5)).isEqualTo("abcde")
    assertThat(source2.readUtf8(5)).isEqualTo("abcde")
    assertThat(source2.readUtf8(5)).isEqualTo("fghij")
    assertThat(source1.readUtf8(5)).isEqualTo("fghij")
    assertThat(source1.exhausted()).isTrue()
    assertThat(source2.exhausted()).isTrue()
    source1.close()
    source2.close()
    assertThat(relay.isClosed).isTrue()

    server.enqueue(MockResponse(body = "abc"))
    server.enqueue(MockResponse(body = "def"))
    server.enqueue(MockResponse(body = "ghi"))
    executeSynchronously("/a").assertBody("abc")
    executeSynchronously("/b").assertBody("def")
    executeSynchronously("/c").assertBody("ghi")
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)

    server.enqueue(MockResponse(body = "ABC"))
    server.enqueue(MockResponse(body = "DEF"))
    server.enqueue(MockResponse(body = "GHI"))
    assertContent("ABC", getResponse(newRequest("/")))
    assertContent("DEF", getResponse(newRequest("/")))
    assertContent("GHI", getResponse(newRequest("/")))
    assertThat(hostnameVerifier.calls)
      .isEqualTo(listOf("verify " + server.hostName))

      expectedResponseCode = 200
      server.enqueue(
        MockResponse.Builder()
          .setHeader("Cache-Control", "no-store")
          .body("FGHIJ")
          .build(),
      )
    }
    server.start()
    val request =
      Request.Builder()
        .url(server.url("/"))
        .build()
    val response = client.newCall(request).execute()