fun testFileDescriptor() {
    assertOnFileDescriptor { fd ->
      val requestBody = fd.toRequestBody()

      assertThat(requestBody.contentLength()).isEqualTo(-1L)
      assertThat(requestBody.isOneShot()).isEqualTo(true)
    }
  }

  @Test
  fun testFileDescriptorRead() {
    assertOnFileDescriptor(content = "Hello") { fd ->
      val requestBody = fd.toRequestBody()

      val buffer = Buffer()

    assertThat(explicitAdapter.toDer("hi")).isEqualTo(bytes)
  }

  @Test fun `boolean`() {
    val bytes = "0101FF".decodeHex()
    assertThat(Adapters.BOOLEAN.fromDer(bytes)).isEqualTo(true)
    assertThat(Adapters.BOOLEAN.toDer(true)).isEqualTo(bytes)
  }

  @Test fun `positive integer`() {
    val bytes = "020132".decodeHex()
    assertThat(Adapters.INTEGER_AS_LONG.toDer(50L)).isEqualTo(bytes)

          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
        .proxy(server.toProxyAddress())
        .build()

    server.enqueue(MockResponse(inTunnel = true))
    server.enqueue(MockResponse())

    val call =
      client.newCall(
        Request(
          url =
            server.url("/").newBuilder()
              .host(hostnameOrIpAddress)

package okhttp3.tls.internal.der

import okio.Buffer
import okio.ByteString

/**
 * Encode and decode a model object like a [Long] or [Certificate] as DER bytes.
 */
internal interface DerAdapter<T> {
  /** Returns true if this adapter can read [header] in a choice. */
  fun matches(header: DerHeader): Boolean

  /**
   * Returns a value from this adapter.
   *

      Platform.get().newSSLContext().apply {
        init(null, arrayOf(trustManager), null)
      }.socketFactory

    private fun createInsecureHostnameVerifier(): HostnameVerifier = HostnameVerifier { _, _ -> true }
  }

    t: Throwable? = null,
  ) {
    val logLevel = if (level == WARN) Level.WARNING else Level.INFO
    logger.log(logLevel, message, t)
  }

  open fun isCleartextTrafficPermitted(hostname: String): Boolean = true

  /**
   * Returns an object that holds a stack trace created at the moment this method is executed. This
   * should be used specifically for [java.io.Closeable] objects and in conjunction with
   * [logCloseableLeak].

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

    multipartReader.use {
      while (true) {
        val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like

    // en space
    assertThat(parse("http://h/\u2002").encodedPath).isEqualTo("/%E2%80%82")
    // em space
    assertThat(parse("http://h/\u2003").encodedPath).isEqualTo("/%E2%80%83")
    // three-per-em space
    assertThat(parse("http://h/\u2004").encodedPath).isEqualTo("/%E2%80%84")
    // four-per-em space
    assertThat(parse("http://h/\u2005").encodedPath).isEqualTo("/%E2%80%85")
    // six-per-em space

 [kotlin]: https://kotlinlang.org/
 [okhttp3_pro]: https://raw.githubusercontent.com/square/okhttp/master/okhttp/src/main/resources/META-INF/proguard/okhttp3.pro
 [okhttp_312x]: https://github.com/square/okhttp/tree/okhttp_3.12.x
 [okhttp]: https://square.github.io/okhttp/
 [okio]: https://github.com/square/okio
 [post_example]: https://raw.github.com/square/okhttp/master/samples/guide/src/main/java/okhttp3/guide/PostExample.java

        if (nextUrl != null) return true

        canRemove = false // Prevent delegate.remove() on the wrong item!
        while (delegate.hasNext()) {
          try {
            delegate.next().use { snapshot ->
              val metadata = snapshot.getSource(ENTRY_METADATA).buffer()
              nextUrl = metadata.readUtf8LineStrict()
              return true
            }
          } catch (_: IOException) {