* ```
   *
   * The caller may read the response body with the response's [Response.body] method. To avoid
   * leaking resources callers must [close the response body][ResponseBody] or the response.
   *
   * Note that transport-layer success (receiving a HTTP response code, headers and body) does not
   * necessarily indicate application-layer success: `response` may still indicate an unhappy HTTP
   * response code like 404 or 500.
   *

   *
   * [rfc_7540_34]: https://datatracker.ietf.org/doc/html/rfc7540#autoid-10
   */
  H2_PRIOR_KNOWLEDGE("h2_prior_knowledge"),

  /**
   * QUIC (Quick UDP Internet Connection) is a new multiplexed and secure transport atop UDP,
   * designed from the ground up and optimized for HTTP/2 semantics. HTTP/1.1 semantics are layered
   * on HTTP/2.
   *

  }

  override fun flushRequest() {
    socket.sink.flush()
  }

  override fun finishRequest() {
    socket.sink.flush()
  }

  /** Returns bytes of a request header for sending on an HTTP transport. */
  fun writeRequest(
    headers: Headers,
    requestLine: String,
  ) {
    check(state == STATE_IDLE) { "state: $state" }
    socket.sink.writeUtf8(requestLine).writeUtf8("\r\n")

import okio.FileSystem
import okio.Path
import okio.Path.Companion.toPath
import okio.buffer

/**
 * Downloads the public suffix list from https://publicsuffix.org/list/public_suffix_list.dat and
 * transforms the file into an efficient format used by OkHttp.
 *
 *
 * The intent is to use this class to update the list periodically by manually running the main
 * method. This should be run from the top-level okhttp directory.
 *

      Header("range", ""),
      Header("referer", ""),
      Header("refresh", ""),
      Header("retry-after", ""),
      Header("server", ""),
      Header("set-cookie", ""),
      Header("strict-transport-security", ""),
      Header("transfer-encoding", ""),
      Header("user-agent", ""),
      Header("vary", ""),
      Header("via", ""),
      Header("www-authenticate", ""),
    )

   * method wraps the elements in the input sets (which may contain null) as Optionals, calls
   * Sets.cartesianProduct with those, then transforms the result to unwrap the Optionals.
   */
  private Iterable<List<Object>> buildCartesianProduct(Set<?>... sets) {
    List<Set<Optional<?>>> optionalSets = Lists.newArrayListWithExpectedSize(sets.length);

import okhttp3.internal.http2.Http2.frameLog
import okhttp3.internal.http2.Http2.frameLogWindowUpdate
import okhttp3.internal.writeMedium
import okio.Buffer
import okio.BufferedSink

/** Writes HTTP/2 transport frames. */
@Suppress("NAME_SHADOWING")
class Http2Writer(
  private val sink: BufferedSink,
  private val client: Boolean,
) : Closeable,
  Lockable {
  private val hpackBuffer: Buffer = Buffer()

 * This class extends Thread and continuously processes access results from the crawler,
 * transforms them into indexed documents, and updates the OpenSearch index.
 *
 * <p>The updater performs the following key operations:
 * <ul>
 * <li>Retrieves crawled documents from the data service</li>
 * <li>Transforms document data using appropriate transformers</li>

    protected static final String OIC_CLIENT_SECRET = "oic.client.secret";

    /** Session key for OpenID Connect state parameter. */
    protected static final String OIC_STATE = "OIC_STATE";

    /** HTTP transport for OpenID Connect requests. */
    protected final HttpTransport httpTransport = new NetHttpTransport();

    /** JSON factory for OpenID Connect response parsing. */

     *
     * **This is an evolving set.** Future releases include support for transitional
     * protocols. The http/1.1 transport will never be dropped.
     *
     * If multiple protocols are specified, [ALPN][alpn] will be used to negotiate a transport.
     * Protocol negotiation is only attempted for HTTPS URLs.
     *