val connectionPool: RealConnectionPool,
  override val route: Route,
  /** The low-level TCP socket. */
  private var rawSocket: Socket?,
  /**
   * The application layer socket. Either an [SSLSocket] layered over [rawSocket], or [rawSocket]
   * itself if this connection does not use SSL.
   */
  private var socket: Socket?,
  private var handshake: Handshake?,
  private var protocol: Protocol?,

    val sslSocket =
      sslSocketFactory.createSocket(
        socket,
        socket.inetAddress.hostAddress,
        socket.port,
        true,
      ) as SSLSocket
    sslSocket.useClientMode = false
    Platform.get().configureTlsExtensions(sslSocket, null, listOf(Protocol.HTTP_2))
    sslSocket.startHandshake()
    return sslSocket
  }

  override fun onStream(stream: Http2Stream) {

  private fun readAndWriteFrames() {
    check(socket == null)
    val socket = serverSocket!!.accept()!!
    this.socket = socket

    // Bail out now if this instance was closed while waiting for the socket to accept.
    synchronized(this) {
      if (executor.isShutdown) {
        socket.close()
        return
      }
    }
    val outputStream = socket.getOutputStream()

    sequenceNumber: Int,
    socket: Socket,
    failure: IOException? = null,
  ) {
    this.requestLine = requestLine
    this.headers = headers
    this.chunkSizes = chunkSizes
    this.bodySize = bodySize
    this.body = body
    this.sequenceNumber = sequenceNumber
    this.failure = failure

    if (socket is SSLSocket) {
      try {
        this.handshake = socket.session.handshake()

    ).filter { it.isSupported() }

  @Throws(IOException::class)
  override fun connectSocket(
    socket: Socket,
    address: InetSocketAddress,
    connectTimeout: Int,
  ) {
    try {
      socket.connect(address, connectTimeout)
    } catch (e: ClassCastException) {
      // On android 8.0, socket.connect throws a ClassCastException due to a bug
      // see https://issuetracker.google.com/issues/63649622

  }

  /**
   * Returns `true` if the socket, as currently configured, supports this connection spec. In
   * order for a socket to be compatible the enabled cipher suites and protocols must intersect.
   *
   * For cipher suites, at least one of the [required cipher suites][cipherSuites] must match the
   * socket's enabled cipher suites. If there are no required cipher suites the socket must have at
   * least one cipher suite enabled.

 * ```
 *
 * If any other extension or parameter is specified, then [unknownValues] will be true. Such
 * responses should be refused as their web socket extensions will not be understood.
 *
 * Note that [java.util.zip.Deflater] is hardcoded to use 15 bits (32 KiB) for
 * `client_max_window_bits` and [java.util.zip.Inflater] is hardcoded to use 15 bits (32 KiB) for

    applyConnectionSpec(connectionSpec, socket, false)
    assertArrayEquals(arrayOf("TLS_A", "TLS_C"), socket.enabledCipherSuites)
  }

  @Test
  fun applyIntersectionRetainsSslPrefixes() {
    val socket = FakeSslSocket()
    socket.enabledProtocols = arrayOf("TLSv1")
    socket.supportedCipherSuites =
      arrayOf("TLS_A", "TLS_B", "TLS_C", "TLS_D", "TLS_E")
    socket.enabledCipherSuites = arrayOf("TLS_A", "TLS_B", "TLS_C")

  ): RealConnection {
    val result =
      RealConnection.newTestConnection(
        taskRunner = taskRunner,
        connectionPool = pool,
        route = route,
        socket = Socket(),
        idleAtNs = idleAtNanos,
      )
    result.withLock { pool.put(result) }
    return result
  }

  fun newConnectionPool(
    taskRunner: TaskRunner = this.taskRunner,

      )
    assertThat(tlsSpec.isCompatible(socket)).isTrue()
    applyConnectionSpec(tlsSpec, socket, isFallback = false)
    assertThat(socket.enabledProtocols).containsExactly(
      TlsVersion.TLS_1_2.javaName,
    )
    assertThat(socket.enabledCipherSuites.toList())
      .containsExactlyInAnyOrder(
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256.javaName,