assertThat(headers.parseChallenges("WWW-Authenticate"))
      .isEqualTo(listOf(Challenge("Basic", expectedAuthParams)))
  }

  @Test fun separatorsBeforeFirstChallenge() {
    val headers =
      Headers.Builder()
        .add("WWW-Authenticate", " ,  , Basic realm=myrealm")
        .build()
    assertThat(headers.parseChallenges("WWW-Authenticate"))

 * ```
 *
 * Similarly, the first line has one challenge and the second line has two challenges:
 *
 * ```
 * WWW-Authenticate: Digest ,foo=bar
 * WWW-Authenticate: Digest ,foo
 * ```
 */
fun Headers.parseChallenges(headerName: String): List<Challenge> {
  val result = mutableListOf<Challenge>()
  for (h in 0 until size) {
    if (headerName.equals(name(h), ignoreCase = true)) {
      val header = Buffer().writeUtf8(value(h))

import okhttp3.internal.commonRequest
import okhttp3.internal.commonToString
import okhttp3.internal.commonTrailers
import okhttp3.internal.connection.Exchange
import okhttp3.internal.http.parseChallenges
import okio.Buffer

/**
 * An HTTP response. Instances of this class are not immutable: the response body is a one-shot
 * value that may be consumed only once and then closed. All other properties are immutable.
 *