private val cipherSuite: String,
    private val peerCertificates: Array<Certificate>?,
    private val localCertificates: Array<Certificate>?,
  ) : DelegatingSSLSession(null) {
    override fun getProtocol() = protocol

    override fun getCipherSuite() = cipherSuite

    override fun getPeerCertificates() = peerCertificates

    override fun getLocalCertificates() = localCertificates
  }

 */
package okhttp3

import okio.IOException

/**
 * Protocols that OkHttp implements for [ALPN][ietf_alpn] selection.
 *
 * ## Protocol vs Scheme
 *
 * Despite its name, [java.net.URL.getProtocol] returns the [scheme][java.net.URI.getScheme] (http,
 * https, etc.) of the URL, not the protocol (http/1.1, spdy/3.1, etc.). OkHttp uses the word
 * *protocol* to identify how HTTP messages are framed.
 *

    socketFile.delete(); // Clean up from previous runs.

    MockWebServer server = new MockWebServer();
    server.setServerSocketFactory(new UnixDomainServerSocketFactory(socketFile));
    server.setProtocols(Collections.singletonList(Protocol.H2_PRIOR_KNOWLEDGE));
    server.enqueue(new MockResponse().setBody("hello"));
    server.start();

    OkHttpClient client = new OkHttpClient.Builder()

  override fun getPeerPort(): Int = throw UnsupportedOperationException()

  @Throws(SSLPeerUnverifiedException::class)
  override fun getPeerPrincipal(): Principal = throw UnsupportedOperationException()

  override fun getProtocol(): String = throw UnsupportedOperationException()

  override fun getSessionContext(): SSLSessionContext = throw UnsupportedOperationException()

  override fun putValue(
    s: String,
    obj: Any,

  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

            while (resources.hasMoreElements()) {
                final URL resource = resources.nextElement();
                logger.debug("loading {}", resource);
                if ("file".equals(resource.getProtocol())) {
                    final File directory = new File(resource.getFile());
                    if (directory.exists() && directory.isDirectory()) {

    }

    URL testFileUrl = IoTestCase.class.getResource("testdata/i18n.txt");
    if (testFileUrl == null) {
      throw new RuntimeException("unable to locate testdata directory");
    }

    if (testFileUrl.getProtocol().equals("file")) {
      try {
        File testFile = new File(testFileUrl.toURI());
        testDir = testFile.getParentFile(); // the testdata directory
      } catch (Exception ignore) {

  fun setProtocolNegotiationEnabled(protocolNegotiationEnabled: Boolean) {
    delegate.protocolNegotiationEnabled = protocolNegotiationEnabled
  }

  @JvmName("-deprecated_protocols")
  fun setProtocols(protocols: List<Protocol>) {
    delegate.protocols = protocols
  }

  @JvmName("-deprecated_protocols")
  fun protocols(): List<Protocol> = delegate.protocols

  fun useHttps(

        assertArgumentNotEmpty("path", path);
        assertArgumentNotEmpty("encoding", encoding);

        final URL url = ResourceUtil.getResource(path);
        if (url.getProtocol().equals("file")) {
            return readText(URLUtil.toFile(url), encoding);
        }
        final InputStream is = URLUtil.openStream(url);
        try {