private val maskCursor: Buffer.UnsafeCursor? = if (isClient) Buffer.UnsafeCursor() else null

  /** Send a ping with the supplied [payload]. */
  @Throws(IOException::class)
  fun writePing(payload: ByteString) {
    writeControlFrame(OPCODE_CONTROL_PING, payload)
  }

  /** Send a pong with the supplied [payload]. */
  @Throws(IOException::class)
  fun writePong(payload: ByteString) {

import okhttp3.internal.format
import okio.ByteString.Companion.encodeUtf8

object Http2 {
  @JvmField
  val CONNECTION_PREFACE = "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n".encodeUtf8()

  /** The initial max frame size, applied independently writing to, or reading from the peer. */
  const val INITIAL_MAX_FRAME_SIZE = 0x4000 // 16384

  const val TYPE_DATA = 0x0
  const val TYPE_HEADERS = 0x1
  const val TYPE_PRIORITY = 0x2

 */
internal class IdnaMappingTable internal constructor(
  val sections: String,
  val ranges: String,
  val mappings: String,
) {
  /**
   * Returns true if the [codePoint] was applied successfully. Returns false if it was disallowed.
   */
  fun map(
    codePoint: Int,
    sink: BufferedSink,
  ): Boolean {
    val sectionsIndex = findSectionsIndex(codePoint)

        .build(),
    )

    // At least three request/response pairs are required because after the first request is cached
    // a different execution path might be taken. Thus modifications to the cache applied during
    // the second request might not be visible until another request is performed.
    assertThat(get(server.url("/")).body.string()).isEqualTo("ABCABCABC")

import okhttp3.internal.http2.Http2.frameLog
import okhttp3.internal.http2.Http2.frameLogWindowUpdate
import org.junit.jupiter.api.Test

class FrameLogTest {
  /** Real stream traffic applied to the log format.  */
  @Test
  fun exampleStream() {
    assertThat(frameLog(false, 0, 5, TYPE_SETTINGS, FLAG_NONE))
      .isEqualTo(">> 0x00000000     5 SETTINGS      ")

    val settings = Settings()
    settings[Settings.HEADER_TABLE_SIZE] = 0
    val connection = connectWithSettings(client, settings)

    // Verify the peer's settings were read and applied.
    assertThat(connection.peerSettings.headerTableSize).isEqualTo(0)
    val writer = connection.writer
    assertThat(writer.hpackWriter.dynamicTableByteCount).isEqualTo(0)

studio

// study : 2014-12-11 Registry Services, LLC
study

// style : 2014-12-04 Binky Moon, LLC
style

// sucks : 2014-12-22 Vox Populi Registry Ltd.
sucks

// supplies : 2013-12-19 Binky Moon, LLC
supplies

// supply : 2013-12-19 Binky Moon, LLC
supply

// support : 2013-10-24 Binky Moon, LLC
support

// surf : 2014-01-09 Registry Services, LLC
surf

suita.osaka.jp sukagawa.fukushima.jp sukumo.kochi.jp sula.no suldal.no suli.hu sumida.tokyo.jp sumita.iwate.jp sumoto.hyogo.jp sumoto.kumamoto.jp sumy.ua sunagawa.hokkaido.jp sund.no sunndal.no sunnyday.jp supabase.co supabase.in supabase.net supersale.jp supplies supply support surf surgeonshall.museum surgery surnadal.no surrey.museum susaki.kochi.jp susono.shizuoka.jp suwa.nagano.jp suwalki.pl suzaka.nagano.jp suzu.ishikawa.jp suzuka.mie.jp suzuki sv sv.it svalbard.no sveio.no svelvik.no svizzera.museum...

   * may access this source.
   */
  var upstream: Source?,
  /** The number of bytes consumed from [upstream]. Guarded by this. */
  var upstreamPos: Long,
  /** User-supplied additional data persisted with the source data. */
  private val metadata: ByteString,
  /** The maximum size of [buffer]. */
  val bufferMaxSize: Long,
) {

     */
    fun Response.varyHeaders(): Headers {
      // Use the request headers sent over the network, since that's what the response varies on.
      // Otherwise OkHttp-supplied headers like "Accept-Encoding: gzip" may be lost.
      val requestHeaders = networkResponse!!.request.headers
      val responseHeaders = headers
      return varyHeaders(requestHeaders, responseHeaders)
    }