*
       * Example:
       * ```
       * --> POST /greeting http/1.1 (3-byte body)
       *
       * <-- 200 OK (22ms, 6-byte body)
       * ```
       */
      BASIC,

      /**
       * Logs request and response lines and their respective headers.
       *
       * Example:
       * ```
       * --> POST /greeting http/1.1
       * Host: example.com
       * Content-Type: plain/text

    detecting the TLS capabilities of the host platform.

 *  Fix: Don't crash in `HttpUrl.topPrivateDomain()` when the hostname is malformed.

 *  Fix: Don't attempt Brotli decompression if the response body is empty.


## Version 4.7.2

_2020-05-20_

 *  Fix: Don't crash inspecting whether the host platform is JVM or Android. With 4.7.0 and 4.7.1 we

  }

  @Test
  @Throws(IOException::class)
  fun http1DoesntSupportDuplex() {
    val call =
      client.newCall(
        Request.Builder()
          .url(server.url("/"))
          .post(AsyncRequestBody())
          .build(),
      )
    assertFailsWith<ProtocolException> {
      call.execute()
    }
  }

  @Test
  fun trueDuplexClientWritesFirst() {
    enableProtocol(Protocol.HTTP_2)

    assertThat("http://host/a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%00b"))
    assertThat("http://host/a\u0080b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%80b"))
    assertThat("http://host/a\u009fb".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%9Fb"))
    // Percent-encoded in the query.
    assertThat("http://host/?a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/?a%00b"))

      (
        if (host.startsWith("[") && host.endsWith("]")) {
          decodeIpv6(host, 1, host.length - 1)
        } else {
          decodeIpv6(host, 0, host.length)
        }
      ) ?: return null

    val address = canonicalizeInetAddress(inetAddressByteArray)
    if (address.size == 16) return inet6AddressToAscii(address)
    if (address.size == 4) return inet4AddressToAscii(address) // An IPv4-mapped IPv6 address.

    if (calls.size >= allocationLimit || noNewExchanges) return false

    // If the non-host fields of the address don't overlap, we're done.
    if (!this.route.address.equalsNonHost(address)) return false

    // If the host exactly matches, we're done: this connection can carry the address.
    if (address.url.host == this.route().address.url.host) {
      return true // This connection is a perfect match.
    }

    @Volatile var callsPerHost = AtomicInteger(0)
      private set

    fun reuseCallsPerHostFrom(other: AsyncCall) {
      this.callsPerHost = other.callsPerHost
    }

    val host: String
      get() = originalRequest.url.host

    val request: Request
      get() = originalRequest

    val call: RealCall
      get() = this@RealCall

    /**

    private val isBouncyCastlePreferred: Boolean
      get() {
        val preferredProvider = Security.getProviders()[0].name
        return "BC" == preferredProvider
      }

    /** Attempt to match the host runtime to a capable Platform implementation. */
    private fun findPlatform(): Platform =
      if (isAndroid) {
        findAndroidPlatform()
      } else {
        findJvmPlatform()
      }

   */
  val upstreamBuffer = Buffer()

  /** True if there are no further bytes to read from [upstream]. Guarded by this. */
  var complete = (upstream == null)

  /** The most recently read bytes from [upstream]. This is a suffix of [file]. Guarded by this. */
  val buffer = Buffer()

  /**
   * Reference count of the number of active sources reading this stream. When decremented to 0

    // Adapt the request and response into our Request and Response domain model.
    val scheme = if (request.handshake != null) "https" else "http"
    val authority = request.headers["Host"] // Has host and port.
    val fancyRequest =
      Request.Builder()
        .url("$scheme://$authority/")
        .headers(request.headers)
        .build()
    val fancyResponse =
      Response.Builder()