return if (Platform.isAndroid) {
        Build.VERSION.SDK_INT
      } else {
        null
      }
    }

    fun localhostHandshakeCertificates(): HandshakeCertificates {
      return when {
        isBouncyCastle() -> localhostHandshakeCertificatesWithRsa2048
        else -> localhost()
      }
    }

    val isAndroid: Boolean
      get() = Platform.Companion.isAndroid

import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import kotlin.test.assertFailsWith
import okhttp3.internal.applyConnectionSpec
import okhttp3.internal.platform.Platform.Companion.isAndroid
import okhttp3.testing.PlatformRule
import okhttp3.testing.PlatformVersion.majorVersion
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

class ConnectionSpecTest {

    // This explicit check avoids activating in Android Studio with Android specific classes
    // available when running plugins inside the IDE.
    val isAndroid: Boolean
      get() = "Dalvik" == System.getProperty("java.vm.name")

    private val isConscryptPreferred: Boolean
      get() {
        val preferredProvider = Security.getProviders()[0].name

import javax.security.auth.x500.X500Principal
import okhttp3.FakeSSLSession
import okhttp3.OkHttpClient
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.platform.Platform.Companion.isAndroid
import okhttp3.testing.PlatformRule
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**

          }
        }
      }
    }
  }

  @AndroidIncompatible // slow
  public void testCheckedMultiply() {
    boolean isAndroid = TestPlatform.isAndroid();
    for (long a : ALL_LONG_CANDIDATES) {
      for (long b : ALL_LONG_CANDIDATES) {
        if (isAndroid && a == -4294967296L && b == 2147483648L) {
          /*
           * Bug in older versions of Android we test against, since fixed: -9223372036854775808L /

   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
  public void testDirectoryDeletion_directorySymlinkRace() throws IOException {
    int iterations = isAndroid() ? 100 : 5000;
    for (DirectoryDeleteMethod method : EnumSet.allOf(DirectoryDeleteMethod.class)) {
      try (FileSystem fs = newTestFileSystem(SECURE_DIRECTORY_STREAM)) {
        Path dirToDelete = fs.getPath("dir/b/i");

   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
  public void testDirectoryDeletion_directorySymlinkRace() throws IOException {
    int iterations = isAndroid() ? 100 : 5000;
    for (DirectoryDeleteMethod method : EnumSet.allOf(DirectoryDeleteMethod.class)) {
      try (FileSystem fs = newTestFileSystem(SECURE_DIRECTORY_STREAM)) {
        Path dirToDelete = fs.getPath("dir/b/i");

  private lateinit var server: MockWebServer

  @BeforeEach
  fun setup(server: MockWebServer) {
    this.server = server
  }

  @Test
  fun testPlatform() {
    assertTrue(Platform.isAndroid)

    if (Build.VERSION.SDK_INT >= 29) {
      assertTrue(Platform.get() is Android10Platform)
    } else {
      assertTrue(Platform.get() is AndroidPlatform)
    }
  }

  @Test