assertThat(filesystem.exists(journalBkpFile)).isTrue()
    createNewCache()
    val snapshotA = cache["k1"]!!
    snapshotA.assertValue(0, "ABC")
    snapshotA.assertValue(1, "DE")
    val snapshotB = cache["k2"]!!
    snapshotB.assertValue(0, "F")
    snapshotB.assertValue(1, "GH")
    assertThat(filesystem.exists(journalBkpFile)).isFalse()

 * typically false on Windows.
 *
 * If this returns false we won't permit simultaneous reads and writes. When writes commit we need
 * to delete the previous snapshots, and that won't succeed if the file is open. (We do permit
 * multiple simultaneous reads.)
 *
 * @param file a file in the directory to check. This file shouldn't already exist!
 */

 [r8_proguard]: https://square.github.io/okhttp/features/r8_proguard/
 [recipes]: https://square.github.io/okhttp/recipes/
 [snap]: https://s01.oss.sonatype.org/content/repositories/snapshots/

    val key = key(request.url)
    val snapshot: DiskLruCache.Snapshot =
      try {
        cache[key] ?: return null
      } catch (_: IOException) {
        return null // Give up because the cache cannot be read.
      }

    val entry: Entry =
      try {
        Entry(snapshot.getSource(ENTRY_METADATA))
      } catch (_: IOException) {
        snapshot.closeQuietly()
        return null
      }

   * exceptions.
   *
   * **The caller must [close][Snapshot.close]** each snapshot returned by [Iterator.next]. Failing
   * to do so leaks open files!
   */
  @Synchronized
  @Throws(IOException::class)
  fun snapshots(): MutableIterator<Snapshot> {
    initialize()
    return object : MutableIterator<Snapshot> {
      /** Iterate a copy of the entries to defend against concurrent modification errors. */

object OkHttp {
  /**
   * This is a string like "4.5.0-RC1", "4.5.0", or "4.6.0-SNAPSHOT" indicating the version of
   * OkHttp in the current runtime. Use this to include the OkHttp version in custom `User-Agent`
   * headers.
   *
   * Official OkHttp releases follow [semantic versioning][semver]. Versions with the `-SNAPSHOT`
   * qualifier are not unique and should only be used in development environments. If you create

    val payload = Buffer()
    while (payload.completeSegmentByteCount() <= PAYLOAD_BYTE_MAX) {
      payload.writeByte('0'.code)
    }
    serverWriter.writeMessageFrame(OPCODE_BINARY, payload.snapshot())

    // Write directly to the unbuffered sink. This ensures it will become single frame.
    assertData("827e") // 'e' == 4-byte follow-up length.
    assertData(format("%04X", payload.completeSegmentByteCount()))

    these in logs, metrics, and even test cases to confirm your cache headers are configured as
    expected.

 *  New: Constant string `okhttp3.VERSION`. This is a string like "4.5.0-RC1", "4.5.0", or
    "4.6.0-SNAPSHOT" indicating the version of OkHttp in the current runtime. Use this to include
    the OkHttp version in custom `User-Agent` headers.

 *  Fix: Don't crash when running as a plugin in Android Studio Canary 4.1. To enable

    assertThat(buffer1.readUtf8()).isEqualTo(", World")
    val buffer2 = Buffer().writeUtf8("icopter!")
    operator.write(3, buffer2, 7)
    assertThat(buffer2.readUtf8()).isEqualTo("!")
    assertThat<ByteString>(snapshot()).isEqualTo("Helicopter".encodeUtf8())
  }

  @Test
  fun readAndWrite() {
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )

apply(plugin = "com.diffplug.spotless")

configure<SpotlessExtension> {
  kotlin {
    target("**/*.kt")
    ktlint()
  }
}

allprojects {
  group = "com.squareup.okhttp3"
  version = "5.0.0-SNAPSHOT"

  repositories {
    mavenCentral()
    google()
  }

  tasks.create("downloadDependencies") {
    description = "Download all dependencies to the Gradle cache"
    doLast {