platform.newSslSocketFactory(platform.platformTrustManager()).defaultCipherSuites
    val cipherSuites =
      ConnectionSpec.RESTRICTED_TLS.effectiveCipherSuites(platformDefaultCipherSuites)

    if (cipherSuites.contains(TLS_CHACHA20_POLY1305_SHA256.javaName)) {
      assertThat(cipherSuites).containsExactly(
        TLS_AES_128_GCM_SHA256.javaName,
        TLS_AES_256_GCM_SHA384.javaName,

		tlsConfig.ClientAuth = tls.RequestClientCert
	}

	if secureCiphers := env.Get(api.EnvAPISecureCiphers, config.EnableOn) == config.EnableOn; secureCiphers {
		tlsConfig.CipherSuites = crypto.TLSCiphers()
	} else {
		tlsConfig.CipherSuites = crypto.TLSCiphersBackwardCompatible()
	}
	tlsConfig.CurvePreferences = crypto.TLSCurveIDs()
	return tlsConfig
}

/////////// Types and functions for OpenID IAM testing

    connectionSpec = ConnectionSpec.COMPATIBLE_TLS
    connectionSpec = ConnectionSpec.CLEARTEXT
    val tlsVersions: List<TlsVersion>? = connectionSpec.tlsVersions
    val cipherSuites: List<CipherSuite>? = connectionSpec.cipherSuites
    val supportsTlsExtensions: Boolean = connectionSpec.supportsTlsExtensions
    val compatible: Boolean =
      connectionSpec.isCompatible(

		TLS: &tls.Config{
			ServerName:         host,
			MinVersion:         tls.VersionTLS12,
			NextProtos:         []string{"h2", "http/1.1"},
			ClientSessionCache: tls.NewLRUClientSessionCache(100),
			CipherSuites:       crypto.TLSCiphersBackwardCompatible(), // Contains RSA key exchange
			RootCAs:            rootCAs,
		},
	}

	// Parse explicitly set enable=on/off flag.
	isEnableFlagExplicitlySet := false

	public final fun allEnabledTlsVersions ()Lokhttp3/ConnectionSpec$Builder;
	public final fun build ()Lokhttp3/ConnectionSpec;
	public final fun cipherSuites ([Ljava/lang/String;)Lokhttp3/ConnectionSpec$Builder;
	public final fun cipherSuites ([Lokhttp3/CipherSuite;)Lokhttp3/ConnectionSpec$Builder;
	public final fun supportsTlsExtensions (Z)Lokhttp3/ConnectionSpec$Builder;

	public final fun allEnabledTlsVersions ()Lokhttp3/ConnectionSpec$Builder;
	public final fun build ()Lokhttp3/ConnectionSpec;
	public final fun cipherSuites ([Ljava/lang/String;)Lokhttp3/ConnectionSpec$Builder;
	public final fun cipherSuites ([Lokhttp3/CipherSuite;)Lokhttp3/ConnectionSpec$Builder;
	public final fun supportsTlsExtensions (Z)Lokhttp3/ConnectionSpec$Builder;

Go 1.23 changed the default TLS cipher suites used by clients and servers when
not explicitly configured, removing 3DES cipher suites. The default can be reverted
using the [`tls3des` setting](/pkg/crypto/tls/#Config.CipherSuites).
This setting will be removed in Go 1.27.

Go 1.23 changed the behavior of [`tls.X509KeyPair`](/pkg/crypto/tls#X509KeyPair)
and [`tls.LoadX509KeyPair`](/pkg/crypto/tls#LoadX509KeyPair) to populate the

          clientCertificates.trustManager,
        ).connectionSpecs(
          listOf(
            ConnectionSpec
              .Builder(ConnectionSpec.MODERN_TLS)
              .cipherSuites(cipherSuite)
              .build(),
          ),
        ).build()
    val serverCertificates =
      HandshakeCertificates
        .Builder()
        .build()
    server.useHttps(