```kotlin
    dependencies {
       api(platform("com.squareup.okhttp3:okhttp-bom:4.4.0"))
       api("com.squareup.okhttp3:okhttp")              // No version!
       api("com.squareup.okhttp3:logging-interceptor") // No version!
    }
    ```

 *  New: Upgrade to Okio 2.4.3.

    ```kotlin
    implementation("com.squareup.okio:okio:2.4.3")
    ```

   * https://github.com/square/okhttp/issues/5667
   */
  @Test
  fun hostToUriStripsCharacters() {
    val httpUrl = "http://example\".com/".toHttpUrl()
    assertThat(httpUrl.toUri().toString()).isEqualTo("http://example.com/")
  }

  /** Confirm that URI retains other characters. https://github.com/square/okhttp/issues/5236 */
  @Test
  fun hostToUriStripsCharacters2() {

       */
      BASIC,

      /**
       * Logs request and response lines and their respective headers.
       *
       * Example:
       * ```
       * --> POST /greeting http/1.1
       * Host: example.com
       * Content-Type: plain/text
       * Content-Length: 3
       * --> END POST
       *
       * <-- 200 OK (22ms)
       * Content-Type: plain/text
       * Content-Length: 6
       * <-- END HTTP

 *
 * Otherwise, this performs IDN ToASCII encoding and canonicalize the result to lowercase. For
 * example this converts `☃.net` to `xn--n3h.net`, and `WwW.GoOgLe.cOm` to `www.google.com`.
 * `null` will be returned if the host cannot be ToASCII encoded or if the result contains
 * unsupported ASCII characters.
 */
internal fun String.toCanonicalHost(): String? {
  val host: String = this

    val bytes = "820b6578616d706c652e636f6d".decodeHex()
    assertThat(CertificateAdapters.generalName.fromDer(bytes))
      .isEqualTo(generalNameDnsName to "example.com")
    assertThat(CertificateAdapters.generalName.toDer(generalNameDnsName to "example.com"))
      .isEqualTo(bytes)
  }

  @Test fun `extension with type hint for basic constraints`() {
    val extension =
      Extension(
        BASIC_CONSTRAINTS,

import assertk.assertions.isNull
import okhttp3.internal.http.parseChallenges
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Test

class HeadersChallengesTest {
  /** See https://github.com/square/okhttp/issues/2780.  */
  @Test fun testDigestChallengeWithStrictRfc2617Header() {
    val headers =
      Headers.Builder()
        .add(
          "WWW-Authenticate",

data:/example.com/  s:data p:/example.com/
javascript:/example.com/  s:javascript p:/example.com/
mailto:/example.com/  s:mailto p:/example.com/
http:example.com/  s:http h:example.org p:/foo/example.com/
ftp:example.com/  s:ftp h:example.com p:/
https:example.com/  s:https h:example.com p:/
madeupscheme:example.com/  s:madeupscheme p:example.com/
ftps:example.com/  s:ftps p:example.com/
gopher:example.com/  s:gopher h:example.com p:/

      assertThat(certificateSANs(peerCertificate)).containsExactly("���.com", "���.com")
    }
    assertThat(verifier.verify("tel.com", session)).isFalse()
    assertThat(verifier.verify("k.com", session)).isFalse()
    assertThat(verifier.verify("foo.com", session)).isFalse()
    assertThat(verifier.verify("bar.com", session)).isFalse()
    assertThat(verifier.verify("k.com", session)).isFalse()

  fun nullRemovesTag() {
    val request =
      Request.Builder()
        .url("https://square.com")
        .tag("a")
        .tag(null)
        .build()
    assertThat(request.tag()).isNull()
  }

  @Test
  fun removeAbsentTag() {
    val request =
      Request.Builder()
        .url("https://square.com")
        .tag(null)
        .build()
    assertThat(request.tag()).isNull()
  }

    bytesIn.writeUtf8("www.example.com")
  }

  private fun checkReadFirstRequestWithoutHuffman() {
    assertThat(hpackReader!!.headerCount).isEqualTo(1)

    // [  1] (s =  57) :authority: www.example.com
    val entry = hpackReader!!.dynamicTable[readerHeaderTableLength() - 1]!!
    checkEntry(entry, ":authority", "www.example.com", 57)

    // Table size: 57