### EventListener.Factory

In the preceding example we used a field, `callStartNanos`, to track the elapsed time of each event. This is handy, but it won’t work if multiple calls are executing concurrently. To accommodate this, use a `Factory` to create a new `EventListener` instance for each `Call`. This allows each listener to keep call-specific state.

  bufferA.writeUtf8(normalized)

  // 3. For each label, convert/validate Punycode.
  val decoded = Punycode.decode(bufferA.readUtf8()) ?: return null

  // 4.1 Validate.

  // Must be NFC.
  if (decoded != normalizeNfc(decoded)) return null

  // TODO: Must not begin with a combining mark.
  // TODO: Each character must be 'valid' or 'deviation'. Not mapped.

 * All comments are ignored.
 *
 * Regular lines contain fields separated by semicolons.
 *
 * The first element on each line is a single hex code point (like 0041) or a hex code point range
 * (like 0030..0039).
 *
 * The second element on each line is a mapping type, like `valid` or `mapped`.
 *
 * For lines that contain a mapping target, the next thing is a sequence of hex code points (like

 *  New: Reduce contention for applications that make a very high number of concurrent requests.
    Previously OkHttp used its connection pool as a lock when making changes to connections and
    calls. With this change each connection is locked independently.

 *  Upgrade: [Okio 2.7.0][okio_2_7_0].

    ```kotlin
    implementation("com.squareup.okio:okio:2.7.0")
    ```

import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Source
import okio.Timeout

/**
 * Replicates a single upstream source into multiple downstream sources. Each downstream source
 * returns the same bytes as the upstream source. Downstream sources may read data either as it
 * is returned by upstream, or after the upstream source has been exhausted.
 *

    assertThat(b.code).isEqualTo(200)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    assertThat(
      server.takeRequest().sequenceNumber,
      "When connection: close is used, each request should get its own connection",
    ).isEqualTo(0)
  }

  @Test
  fun connectionCloseInResponse() {
    server.enqueue(MockResponse(headers = headersOf("Connection", "close")))

 * limitations under the License.
 */
package okhttp3.tls.internal.der

/**
 * The first two bytes of each value is a header that includes its tag (field ID) and length.
 */
internal data class DerHeader(
  /**
   * Namespace of the tag.
   *
   * This value is encoded in bits 7 and 8 of the first byte of each value.
   *
   * ```
   * 0b00xxxxxx Universal
   * 0b01xxxxxx Application
   * 0b10xxxxxx Context-Specific

import okio.Source
import okio.blackholeSink
import okio.buffer

/**
 * A cache that uses a bounded amount of space on a filesystem. Each cache entry has a string key
 * and a fixed number of values. Each key must match the regex `[a-z0-9_-]{1,64}`. Values are byte
 * sequences, accessible as streams or files. Each value must be between `0` and `Int.MAX_VALUE`
 * bytes in length.
 *

   * not terminated.
   *
   * Use this method to create a degenerate Okio Buffer where each byte is in a separate segment of
   * the internal list.
   */
  @JvmStatic
  fun fragmentBuffer(buffer: Buffer): Buffer {
    // Write each byte into a new buffer, then clone it so that the segments are shared.
    // Shared segments cannot be compacted so we'll get a long chain of short segments.

    repositoryPlugin.deployClassPath()
  }

  private fun createBndRun(workspace: Workspace): Bndrun {
    // Creating the run require string. It will always use the latest version of each bundle
    // available in the repository.
    val runRequireString =
      REQUIRED_BUNDLES.joinToString(separator = ",") {
        "osgi.identity;filter:='(osgi.identity=$it)'"
      }

    val bndEditModel =