throw IOException("Android internal error", iae)
    }
  }

  @SuppressSignatureCheck
  companion object {
    fun buildIfSupported(): SocketAdapter? = if (isSupported()) Android10SocketAdapter() else null

    fun isSupported() = isAndroid && Build.VERSION.SDK_INT >= 29
  }

      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }
  }

  @Test
  fun testBuildIfSupported() {
    val actual = OpenJSSEPlatform.buildIfSupported()
    assertThat(actual).isNotNull()
  }

  private fun enableTls() {
    // Generate a self-signed cert for the server to serve and the client to trust.

        Class.forName("org.bouncycastle.jsse.provider.BouncyCastleJsseProvider", false, javaClass.classLoader)

        true
      } catch (_: ClassNotFoundException) {
        false
      }

    fun buildIfSupported(): BouncyCastlePlatform? = if (isSupported) BouncyCastlePlatform() else null
  }

      return listOfNotNull(
        DeferredSocketAdapter(ConscryptSocketAdapter.factory),
        DeferredSocketAdapter(AndroidSocketAdapter.factory("org.conscrypt")),
        StandardAndroidSocketAdapter.buildIfSupported("org.conscrypt"),
      )
    }
  }

            SSLSocket::class.java.getMethod("getApplicationProtocol")
            true
          } catch (nsme: NoSuchMethodException) {
            false
          }
        }
    }

    fun buildIfSupported(): Jdk9Platform? = if (isAvailable) Jdk9Platform() else null
  }

        return null
      } else {
        return method.invoke(this, *callArgs)
      }
    }
  }

  companion object {
    fun buildIfSupported(): Platform? {
      val jvmVersion = System.getProperty("java.specification.version", "unknown")
      try {
        // 1.8, 9, 10, 11, 12 etc
        val version = jvmVersion.toInt()

          else -> false
        }
      } catch (e: NoClassDefFoundError) {
        false
      } catch (e: ClassNotFoundException) {
        false
      }

    fun buildIfSupported(): ConscryptPlatform? = if (isSupported) ConscryptPlatform() else null

    fun atLeastVersion(
      major: Int,
      minor: Int = 0,
      patch: Int = 0,
    ): Boolean {