* limitations under the License.
 */
package okhttp3.internal.http2

import java.io.IOException
import java.net.ProtocolException
import java.util.Locale
import java.util.concurrent.TimeUnit
import okhttp3.Headers
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.internal.headersContentLength

package once

// Singleton contains a pointer to T that must be set once.
// Until the value is set all Get() calls will block.
type Singleton[T any] struct {
	v   *T
	set chan struct{}
}

// NewSingleton creates a new unset singleton.
func NewSingleton[T any]() *Singleton[T] {
	return &Singleton[T]{set: make(chan struct{}), v: nil}
}

// Get will return the singleton value.
func (s *Singleton[T]) Get() *T {
	<-s.set
	return s.v

  var minFreshSeconds = -1
  var onlyIfCached = false
  var noTransform = false
  var immutable = false

  var canUseHeaderValue = true
  var headerValue: String? = null

  loop@ for (i in 0 until headers.size) {
    val name = headers.name(i)
    val value = headers.value(i)

    when {
      name.equals("Cache-Control", ignoreCase = true) -> {
        if (headerValue != null) {

 * limitations under the License.
 */
package okhttp3.internal.http1

import okhttp3.Headers
import okhttp3.internal.HEADER_LIMIT
import okio.BufferedSource

/**
 * Parse all headers delimited by "\r\n" until an empty line. This throws if headers exceed 256 KiB.
 */
class HeadersReader(
  val source: BufferedSource,
) {
  private var headerLimit = HEADER_LIMIT

 * When making TLS connections with multiple [connection specs](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-connection-spec/), these are attempted in sequence until the TLS handshake succeeds.

### [Connections](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-connection/)

When you request a URL with OkHttp, here's what it does:

	"github.com/klauspost/cpuid/v2"
)

func init() {
	// All MinIO operations must be under UTC.
	os.Setenv("TZ", "UTC")

	// Temporary workaround for
	// https://github.com/golang/go/issues/49233
	// Keep until upstream has been fixed.
	cpuid.CPU.Disable(cpuid.AVX512F, cpuid.AVX512BW, cpuid.AVX512CD, cpuid.AVX512DQ,
		cpuid.AVX512ER, cpuid.AVX512FP16, cpuid.AVX512IFMA, cpuid.AVX512PF, cpuid.AVX512VBMI,

FIELD com.google.common.util.concurrent.AbstractFuture.Listener.executor com.google.common.util.concurrent.MoreExecutors.rejectionPropagatingExecutor.$
FIELD com.google.common.util.concurrent.AbstractService.listeners
# NonReentrantExecutor is not exposed to this field
FIELD com.google.common.util.concurrent.ExecutionSequencer.ThreadConfinedTaskQueue.nextExecutor com.google.common.util.concurrent.ExecutionSequencer.TaskNonReentrantExecutor

 */
internal fun BufferedSource.isProbablyUtf8(codePointLimit: Long = Long.MAX_VALUE): Boolean {
  try {
    val peek = peek()
    for (i in 0 until codePointLimit) {
      if (peek.exhausted()) {
        break
      }
      val codePoint = peek.readUtf8CodePoint()
      if (Character.isISOControl(codePoint) && !Character.isWhitespace(codePoint)) {
        return false

   * them until they are needed.  When there is no contention, all
   * updates are made to the base field.  Upon first contention (a
   * failed CAS on base update), the table is initialized to size 2.
   * The table size is doubled upon further contention until
   * reaching the nearest power of two greater than or equal to the
   * number of CPUS. Table slots remain empty (null) until they are
   * needed.
   *

import javax.inject.Singleton;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;