* permissive and permits the `_` character.
 *
 * [mapping table]: https://www.unicode.org/reports/tr46/#IDNA_Mapping_Table
 * [mapping step]: https://www.unicode.org/reports/tr46/#ProcessingStepMap
 */
class SimpleIdnaMappingTable internal constructor(
  internal val mappings: List<Mapping>,
) {
  /**

 * limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okhttp3.internal.idn.IDNA_MAPPING_TABLE
import okhttp3.internal.idn.Punycode
import okio.Buffer

/**
 * Quick and dirty pattern to differentiate IP addresses from hostnames. This is an approximation
 * of Android's private InetAddress#isNumeric API.
 *

    if (address.url.host == this.route().address.url.host) {
      return true // This connection is a perfect match.
    }

    // At this point we don't have a hostname match. But we still be able to carry the request if
    // our connection coalescing requirements are met. See also:
    // https://hpbn.co/optimizing-application-delivery/#eliminate-domain-sharding

    // Simulate receiving a small dynamic table size update, that implies eviction.
    bytesIn.writeByte(0x3F) // Dynamic table size update (size = 55).
    bytesIn.writeByte(0x18)
    hpackReader!!.readHeaders()
    assertThat(hpackReader!!.headerCount).isEqualTo(1)
  }

  /** Header table backing array is initially 8 long, let's ensure it grows.  */
  @Test

 * [RFC 3491]: https://datatracker.ietf.org/doc/html/rfc3491
 */
class Stringprep(
  /** Unassigned code points. */
  val unassigned: CodePointSet,
  /** Mappings. Note table B.3 is not used in RFC 3491. */
  val mapping: CodePointMapping,
  /** Prohibited code points. */
  val prohibitSet: CodePointSet,
  /** RandALCat code points; bidi category is "R" or "AL". */
  val randalcatSet: CodePointSet,

 * peer. Hence, we expect all frames to have a max length of [Http2.INITIAL_MAX_FRAME_SIZE].
 */
class Http2Reader(
  /** Creates a frame reader with max header table size of 4096. */
  private val source: BufferedSource,
  private val client: Boolean,
) : Closeable {
  private val continuation: ContinuationSource = ContinuationSource(this.source)
  private val hpackReader: Hpack.Reader =

  /** Flag values. */
  private val values = IntArray(COUNT)

  /** Returns -1 if unset. */
  val headerTableSize: Int
    get() {
      val bit = 1 shl HEADER_TABLE_SIZE
      return if (bit and set != 0) values[HEADER_TABLE_SIZE] else -1
    }

  val initialWindowSize: Int
    get() {
      val bit = 1 shl INITIAL_WINDOW_SIZE

    val session_ticket_supported: Boolean,
    val tls_compression_supported: Boolean,
    val ephemeral_keys_supported: Boolean,
    val rating: String,
    val tls_version: String,
    val able_to_detect_n_minus_one_splitting: Boolean,
    val insecure_cipher_suites: Map<String, List<String>>,
    val given_cipher_suites: List<String>?,
  )

  @Test
  @Disabled
  fun testSSLFeatures() {

  val path = "/okhttp3/internal/idna/IdnaMappingTable.txt".toPath()
  val table =
    FileSystem.RESOURCES.read(path) {
      readPlainTextIdnaMappingTable()
    }
  return buildIdnaMappingTableData(table)
}

/**
 * Generate a file containing the mapping table's string literals, like this:
 *
 * ```
 * internal val IDNA_MAPPING_TABLE: IdnaMappingTable = IdnaMappingTable(
 *   sections = "...",
 *   ranges = "...",

 */
package okhttp3.internal.idn

import kotlin.math.abs
import kotlin.streams.toList
import okio.Buffer

/** Index [table] for compactness as specified by `IdnaMappingTable`. */
fun buildIdnaMappingTableData(table: SimpleIdnaMappingTable): IdnaMappingTableData {
  val simplified = mergeAdjacentRanges(table.mappings)
  val withoutSectionSpans = withoutSectionSpans(simplified)
  val sections = sections(withoutSectionSpans)