return "BC" == preferredProvider
    }

  actual fun findPlatform(): Platform {
    if (isConscryptPreferred) {
      val conscrypt = ConscryptPlatform.buildIfSupported()

      if (conscrypt != null) {
        return conscrypt
      }
    }

    if (isBouncyCastlePreferred) {
      val bc = BouncyCastlePlatform.buildIfSupported()

      if (bc != null) {
        return bc
      }

    val call = client.newCall(Request(url = url))
    val response = call.execute()
    assertThat(response.isSuccessful).isTrue()

    val recordedRequest = server.takeRequest()
    // https://github.com/bcgit/bc-java/issues/1773
    if (!platform.isBouncyCastle()) {
      assertThat(recordedRequest.handshakeServerNames).containsExactly(url.host)
    }
  }

  /**

      createDirectedGraph("ab", "bc", "cd", "da");

  /**
   * Same as {@link #CYCLE_GRAPH}, but with an extra a->c edge.
   *
   * {@snippet :
   * |--------------|
   * v              |
   * a -> b -> c -> d
   * |         ^
   * |---------|
   * }
   */
  private static final SuccessorsFunction<Character> TWO_CYCLES_GRAPH =
      createDirectedGraph("ab", "ac", "bc", "cd", "da");

  /**

    InterruptibleTask<String> task =
        new InterruptibleTask<String>() {
          @Override
          String runInterruptibly() throws Exception {
            BrokenChannel bc = new BrokenChannel();
            bc.doBegin();
            isInterruptibleRegistered.countDown();
            new CountDownLatch(1).await(); // the interrupt will wake us up
            return "impossible!";
          }

	}
	defer xhttp.DrainBody(reader)

	b := bytebufferpool.Get()
	bc := bytebufferpool.Get()
	defer func() {
		b.Reset()
		bc.Reset()

		bytebufferpool.Put(b)
		bytebufferpool.Put(bc)
	}()

	w, err := zstd.NewWriter(bc)
	if err != nil {
		return nil, nil, err
	}

	if _, err = io.Copy(w, io.TeeReader(reader, b)); err != nil {

				// into a constant. E.g:
				//   BC 4,...
				// into
				//   BC $4,...
				prog.From = obj.Addr{
					Type:   obj.TYPE_CONST,
					Offset: p.getConstant(prog, op, &a[0]),
				}

			}

			// Likewise, fixup usage like:
			//   BC x,LT,...
			//   BC x,foo+2,...
			//   BC x,4
			//   BC x,$5
			// into
			//   BC x,CR0LT,...
			//   BC x,CR0EQ,...
			//   BC x,CR1LT,...

    //     [abc]de|[fgh] -> [fgh]de|[abc]. Now [fgh] is in the right place, but we need to swap [de]
    //     with [abc]: fgh[de]|a[bc] -> fgh[bc]|a[de]. Now we need to swap [a] with [bc]:
    //     fgh[b]c|[a]de -> fgh[a]c|[b]de. Finally we need to swap [c] with [b]:
    //     fgha[c]|[b]de -> fgha[b]|[c]de. Because these two blocks are the same size, we are done.

    } catch (uoe: UnsupportedOperationException) {
      // UnsupportedOperationException – if the underlying provider does not implement the operation
      // https://github.com/bcgit/bc-java/issues/1773
      listOf()
    }
  }

  @Throws(IOException::class)
  open fun connectSocket(
    socket: Socket,
    address: InetSocketAddress,
    connectTimeout: Int,
  ) {

            hashFunction.newHasher().putUnencodedChars("a").putUnencodedChars("bc").hash(),
            hashFunction
                .newHasher()
                .putUnencodedChars("a")
                .putUnencodedChars("b")
                .putUnencodedChars("c")
                .hash(),
            hashFunction.newHasher().putChar('a').putUnencodedChars("bc").hash(),

          }.trustManagers
          .first() as X509TrustManager

      val sslContext =
        Platform.get().newSSLContext().apply {
          // TODO remove most of this code after https://github.com/bcgit/bc-java/issues/686
          init(null, arrayOf(trustManager), SecureRandom())
        }

      client =
        client
          .newBuilder()
          .sslSocketFactory(sslContext.socketFactory, trustManager)