/**
 * A limited implementation of SOCKS Protocol Version 5, intended to be similar to MockWebServer.
 * See [RFC 1928](https://www.ietf.org/rfc/rfc1928.txt).
 */
class SocksProxy {
  private val executor = Executors.newCachedThreadPool(threadFactory("SocksProxy"))
  private var serverSocket: ServerSocket? = null
  private val connectionCount = AtomicInteger()
  private val openSockets: MutableSet<Socket> = ConcurrentHashMap.newKeySet()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop
  private val server = MockWebServer()

  private val socksProxy = SocksProxy()

  @BeforeEach
  fun setUp() {
    socksProxy.play()
  }

  @AfterEach
  fun tearDown() {
    socksProxy.shutdown()
  }

  @Test
  fun proxy() {
    server.enqueue(MockResponse.Builder().body("abc").build())

    server.enqueue(MockResponse())
    socksProxy = SocksProxy()
    socksProxy!!.play()
    val proxy = socksProxy!!.proxy()
    client =
      client
        .newBuilder()
        .proxy(proxy)
        .build()
    val call =
      client.newCallWithListener(
        Request
          .Builder()
          .url("http://" + SocksProxy.HOSTNAME_THAT_ONLY_THE_PROXY_KNOWS + ":" + server.port)