* exchange information. HTTP/3 runs over QUIC, which is published as RFC 9000.
   *
   * HTTP/3 is not natively supported by OkHttp, but provided to allow a theoretical interceptor
   * that provides support.
   */
  HTTP_3("h3"),
  ;

  /**
   * Returns the string used to identify this protocol for ALPN, like "http/1.1", "spdy/3.1" or
   * "h2".
   *
   * See also [IANA tls-extensiontype-values][iana].
   *

    font-weight: 700;
    font-style: normal
}

body, input {
    font-family: cash-market,"Helvetica Neue",helvetica,sans-serif;
}

.md-typeset h1, .md-typeset h2, .md-typeset h3, .md-typeset h4 {
    font-family: cash-market,"Helvetica Neue",helvetica,sans-serif;
    line-height: normal;
    font-weight: bold;
}

button.dl {
  font-weight: 300;
  font-size: 25px;
  line-height: 40px;

    assertThat(get("h2")).isEqualTo(Protocol.HTTP_2)
    assertThat(get("h2_prior_knowledge")).isEqualTo(Protocol.H2_PRIOR_KNOWLEDGE)
    assertThat(get("quic")).isEqualTo(Protocol.QUIC)
    assertThat(get("h3")).isEqualTo(Protocol.HTTP_3)
    assertThat(get("h3-29")).isEqualTo(Protocol.HTTP_3)
  }

  @Test
  fun testGetUnknown() {
    assertThrows(IOException::class.java) { get("tcp") }
  }

  @Test
  fun testToString() {

    try {
      val response = completableFuture.get(10, TimeUnit.SECONDS)

      assertEquals(200, response.code)
      assertEquals("h3", response.negotiatedProtocol)
      assertTrue(response.content.contains("Disallow"))
    } catch (ee: ExecutionException) {
      throw ee.cause?.cause ?: ee.cause!!
    }
  }

  data class Response(