```java
ConnectionSpec spec = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
    .tlsVersions(TlsVersion.TLS_1_2)
    .cipherSuites(
          CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256)
    .build();

OkHttpClient client = new OkHttpClient.Builder()

    val utf8: Challenge = challenge.withCharset(Charsets.UTF_8)
  }

  @Test
  fun cipherSuite() {
    var cipherSuite: CipherSuite = CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
    cipherSuite = CipherSuite.forJavaName("")
    val javaName: String = cipherSuite.javaName
  }

  @Test
  fun connection() {
    val connection =
      object : Connection {

}

public final class okhttp3/CipherSuite {
	public static final field Companion Lokhttp3/CipherSuite$Companion;
	public static final field TLS_AES_128_CCM_8_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_128_CCM_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_128_GCM_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_256_GCM_SHA384 Lokhttp3/CipherSuite;

}

public final class okhttp3/CipherSuite {
	public static final field Companion Lokhttp3/CipherSuite$Companion;
	public static final field TLS_AES_128_CCM_8_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_128_CCM_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_128_GCM_SHA256 Lokhttp3/CipherSuite;
	public static final field TLS_AES_256_GCM_SHA384 Lokhttp3/CipherSuite;

              .Builder(ConnectionSpec.MODERN_TLS)
              .cipherSuites(cipherSuite)
              .build(),
          ),
        ).build()
    val serverCertificates =
      HandshakeCertificates
        .Builder()
        .build()
    server.useHttps(
      socketFactoryWithCipherSuite(serverCertificates.sslSocketFactory(), cipherSuite),
    )
    executeSynchronously("/")

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

          if (blank.isNotEmpty()) {
            throw IOException("expected \"\" but was \"$blank\"")
          }
          val cipherSuiteString = source.readUtf8LineStrict()
          val cipherSuite = CipherSuite.forJavaName(cipherSuiteString)
          val peerCertificates = readCertificateList(source)
          val localCertificates = readCertificateList(source)
          val tlsVersion =

    val source = response1.body.source()
    assertThat(source.readUtf8()).isEqualTo("ABC")

    // OpenJDK 6 fails on this line, complaining that the connection isn't open yet
    val cipherSuite = response1.handshake!!.cipherSuite
    val localCerts = response1.handshake!!.localCertificates
    val serverCerts = response1.handshake!!.peerCertificates
    val peerPrincipal = response1.handshake!!.peerPrincipal