@file:JvmName("Internal")
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import java.nio.charset.Charset
import javax.net.ssl.SSLSocket
import okhttp3.Cache
import okhttp3.CipherSuite
import okhttp3.ConnectionListener
import okhttp3.ConnectionPool
import okhttp3.ConnectionSpec
import okhttp3.Cookie
import okhttp3.Headers
import okhttp3.HttpUrl
import okhttp3.MediaType

}

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;

    @JvmName("get")
    fun SSLSession.handshake(): Handshake {
      val cipherSuite =
        when (val cipherSuiteString = checkNotNull(cipherSuite) { "cipherSuite == null" }) {
          "TLS_NULL_WITH_NULL_NULL", "SSL_NULL_WITH_NULL_NULL" -> {
            throw IOException("cipherSuite == $cipherSuiteString")
          }
          else -> CipherSuite.forJavaName(cipherSuiteString)
        }

        Regex(
          """secureConnectEnd: Handshake\{tlsVersion=TLS_1_[23] cipherSuite=TLS_.* peerCertificates=\[CN=localhost] localCertificates=\[]\}""",
        ),
      )
      .assertLogMatch(Regex("""connectEnd: h2"""))
      .assertLogMatch(
        Regex("""connectionAcquired: Connection\{${url.host}:\d+, proxy=DIRECT hostAddress=${url.host}/.+ cipherSuite=.+ protocol=h2\}"""),
      )

    val realm: String? = challenge.realm()
    val charset: Charset = challenge.charset()
  }

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

  @Test @Disabled
  fun connectionSpec() {
    val connectionSpec: ConnectionSpec = ConnectionSpec.RESTRICTED_TLS

          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 =

        .build()

    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.handshake!!.cipherSuite).isNotNull()
    assertThat(response.handshake!!.tlsVersion).isNotNull()
    assertThat(response.handshake!!.localCertificates).isEmpty()
    assertThat(response.handshake!!.localPrincipal).isNull()

```
INFO: Sending request http://www.publicobject.com/helloworld.txt on Connection{www.publicobject.com:80, proxy=DIRECT hostAddress=54.187.32.157 cipherSuite=none protocol=http/1.1}
User-Agent: OkHttp Example
Host: www.publicobject.com
Connection: Keep-Alive
Accept-Encoding: gzip

INFO: Received response for http://www.publicobject.com/helloworld.txt in 115.6ms

```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()

   * requests on the same socket, and server-push. HTTP/1.1 semantics are layered on HTTP/2.
   *
   * HTTP/2 requires deployments of HTTP/2 that use TLS 1.2 support
   * [CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256], present in Java 8+ and Android 5+.
   * Servers that enforce this may send an exception message including the string
   * `INADEQUATE_SECURITY`.
   */
  HTTP_2("h2"),

  /**