* 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"),

  /**

  override fun getPeerPrincipal(): Principal = delegate!!.peerPrincipal

  override fun getLocalPrincipal(): Principal = delegate!!.localPrincipal

  override fun getCipherSuite(): String = delegate!!.cipherSuite

  override fun getProtocol(): String = delegate!!.protocol

  override fun getPeerHost(): String = delegate!!.peerHost

  override fun getPeerPort(): Int = delegate!!.peerPort

      assertThat(body).isEqualTo(expectedBody)
    }

  fun assertHandshake() =
    apply {
      val handshake = response!!.handshake!!
      assertThat(handshake.tlsVersion).isNotNull()
      assertThat(handshake.cipherSuite).isNotNull()
      assertThat(handshake.peerPrincipal).isNotNull()
      assertThat(handshake.peerCertificates.size).isEqualTo(1)
      assertThat(handshake.localPrincipal).isNull()

  override fun toString(): String =
    "Connection{${route.address.url.host}:${route.address.url.port}," +
      " proxy=${route.proxy}" +
      " hostAddress=${route.socketAddress}" +
      " cipherSuite=${handshake?.cipherSuite ?: "none"}" +
      " protocol=$protocol}"

  companion object {
    const val IDLE_CONNECTION_HEALTHY_NS = 10_000_000_000 // 10 seconds.

    fun newTestConnection(
      taskRunner: TaskRunner,

    val request = server.takeRequest()
    assertThat(request.requestUrl!!.scheme).isEqualTo("https")
    val handshake = request.handshake
    assertThat(handshake!!.tlsVersion).isNotNull()
    assertThat(handshake.cipherSuite).isNotNull()
    assertThat(handshake.localPrincipal).isNotNull()
    assertThat(handshake.localCertificates.size).isEqualTo(1)
    assertThat(handshake.peerPrincipal).isNull()

    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

pkg crypto/tls, type CertificateRequestInfo struct, Version uint16
pkg crypto/tls, type CipherSuite struct
pkg crypto/tls, type CipherSuite struct, ID uint16
pkg crypto/tls, type CipherSuite struct, Insecure bool
pkg crypto/tls, type CipherSuite struct, Name string
pkg crypto/tls, type CipherSuite struct, SupportedVersions []uint16
pkg debug/dwarf, const AttrAddrBase = 115
pkg debug/dwarf, const AttrAddrBase Attr

        }
      }

      val certificatePinner = address.certificatePinner!!

      val handshake =
        Handshake(
          unverifiedHandshake.tlsVersion,
          unverifiedHandshake.cipherSuite,
          unverifiedHandshake.localCertificates,
        ) {
          certificatePinner.certificateChainCleaner!!.clean(
            unverifiedHandshake.peerCertificates,
            address.url.host,

    extensions.configure<JavaPluginExtension> {
      toolchain {
        languageVersion.set(JavaLanguageVersion.of(17))
      }
    }
  }

  tasks.withType<Checkstyle>().configureEach {
    exclude("**/CipherSuite.java")
  }

  val checkstyleConfig: Configuration by configurations.creating
  dependencies {
    checkstyleConfig(rootProject.libs.checkStyle) {
      isTransitive = false
    }
  }

    val request = server.takeRequest()
    assertThat(request.url.scheme).isEqualTo("https")
    val handshake = request.handshake
    assertThat(handshake!!.tlsVersion).isNotNull()
    assertThat(handshake.cipherSuite).isNotNull()
    assertThat(handshake.localPrincipal).isNotNull()
    assertThat(handshake.localCertificates.size).isEqualTo(1)
    assertThat(handshake.peerPrincipal).isNull()