used `Throwable`.
 *  Fix: Fixed a caching bug where we weren't storing rewritten request headers
    like `Accept-Encoding`.
 *  Fix: Fixed bugs in handling the SPDY window size. This was stalling certain
    large downloads
 *  Update the language level to Java 7. (OkHttp requires Android 2.3+ or Java 7+.)

## Version 2.0.0-RC2

_2014-06-11_

    // required. These socket factories explicitly set the buffer sizes on sockets created.
    server = MockWebServer()
    server.serverSocketFactory =
      object : DelegatingServerSocketFactory(getDefault()) {
        @Throws(SocketException::class)
        override fun configureServerSocket(serverSocket: ServerSocket): ServerSocket {
          serverSocket.setReceiveBufferSize(SOCKET_BUFFER_SIZE)
          return serverSocket
        }
      }

    server = MockWebServer()
    server.serverSocketFactory =
      object : DelegatingServerSocketFactory(ServerSocketFactory.getDefault()) {
        @Throws(IOException::class)
        override fun configureServerSocket(serverSocket: ServerSocket): ServerSocket {
          serverSocket.receiveBufferSize = SOCKET_BUFFER_SIZE
          return serverSocket
        }

          if (headerCount + 1 > dynamicTable.size) { // Need to grow the dynamic table.
            val doubled = arrayOfNulls<Header>(dynamicTable.size * 2)
            System.arraycopy(dynamicTable, 0, doubled, dynamicTable.size, dynamicTable.size)
            nextHeaderIndex = dynamicTable.size - 1
            dynamicTable = doubled
          }
          index = nextHeaderIndex--

    writeMedium(frame, Http2.INITIAL_MAX_FRAME_SIZE)
    frame.writeByte(Http2.TYPE_HEADERS)
    frame.writeByte(FLAG_NONE)
    frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.write(headerBlock, Http2.INITIAL_MAX_FRAME_SIZE.toLong())

    // Write the continuation frame, specifying no more frames are expected.
    writeMedium(frame, headerBlock.size.toInt())
    frame.writeByte(Http2.TYPE_CONTINUATION)

    assertThat(settings.initialWindowSize).isEqualTo(108)
  }

  @Test
  fun merge() {
    val a = Settings()
    a[Settings.HEADER_TABLE_SIZE] = 10000
    a[Settings.MAX_HEADER_LIST_SIZE] = 20000
    a[Settings.INITIAL_WINDOW_SIZE] = 30000
    val b = Settings()
    b[Settings.MAX_HEADER_LIST_SIZE] = 40000
    b[Settings.INITIAL_WINDOW_SIZE] = 50000
    b[Settings.MAX_CONCURRENT_STREAMS] = 60000
    a.merge(b)

    val settings1 = Settings()
    settings1[Settings.HEADER_TABLE_SIZE] = 10000
    settings1[Settings.INITIAL_WINDOW_SIZE] = 20000
    settings1[Settings.MAX_FRAME_SIZE] = 30000
    peer.sendFrame().settings(settings1)
    peer.acceptFrame() // ACK SETTINGS
    val settings2 = Settings()
    settings2[Settings.INITIAL_WINDOW_SIZE] = 40000
    settings2[Settings.MAX_FRAME_SIZE] = 50000
    settings2[Settings.MAX_CONCURRENT_STREAMS] = 60000

    try {
      block(content)
      constructedBit = if (constructed) 0b0010_0000 else 0
      constructed = true // The enclosing object is constructed.
    } finally {
      stack.removeAt(stack.size - 1)
      path.removeAt(path.size - 1)
    }

    val sink = sink()

    // Write the tagClass, tag, and constructed bit. This takes 1 byte if tag is less than 31.
    if (tag < 31) {

  private fun writeControlFrame(
    opcode: Int,
    payload: ByteString,
  ) {
    if (writerClosed) throw IOException("closed")

    val length = payload.size
    require(length <= PAYLOAD_BYTE_MAX) {
      "Payload size must be less than or equal to $PAYLOAD_BYTE_MAX"
    }

    val b0 = B0_FLAG_FIN or opcode
    sinkBuffer.writeByte(b0)

    var b1 = length
    if (isClient) {

        throw IOException("response: " + response.code + " " + response.message)
      }

      val body = response.body

      if (body.contentLength() > MAX_RESPONSE_SIZE) {
        throw IOException(
          "response size exceeds limit ($MAX_RESPONSE_SIZE bytes): ${body.contentLength()} bytes",
        )
      }

      val responseBytes = body.source().readByteString()