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
    platform-specific TLS features OkHttp must detect whether it's running in a JVM or in Android.
    The upcoming Android Studio runs in a JVM but has classes from Android and that confused OkHttp!

 *  Fix: Include the header `Accept: text/event-stream` for SSE calls. This header is not added if

    return EventSource.Factory { request, listener ->
      val actualRequest =
        if (request.header("Accept") == null) {
          request.newBuilder().addHeader("Accept", "text/event-stream").build()
        } else {
          request
        }

      RealEventSource(actualRequest, listener).apply {
        connect(callFactory)
      }
    }
  }

  @JvmStatic

    }

    private fun bodyIsStreaming(response: Response): Boolean {
      val contentType = response.body.contentType()
      return contentType != null && contentType.type == "text" && contentType.subtype == "event-stream"
    }

    companion object

    setLevel(Level.BODY)
    server.enqueue(
      MockResponse.Builder()
        .setHeader("Content-Type", "text/event-stream")
        .chunkedBody(
          """
          |event: add
          |data: 73857293
          |
          |event: remove
          |data: 2153
          |
          |event: add
          |data: 113411
          |
          |
          """.trimMargin(),
          8,
        )

        .url(server.url("/"))
        .head()
        .header("User-Agent", "SyncApiTest")
        .build()
    executeSynchronously(request)
      .assertCode(200)
      .assertHeader("Content-Type", "text/plain")
    val recordedRequest = server.takeRequest()
    assertThat(recordedRequest.method).isEqualTo("HEAD")
    assertThat(recordedRequest.headers["User-Agent"]).isEqualTo("SyncApiTest")

        .method("CONNECT", null)
        .header("Host", route.address.url.toHostHeader(includeDefaultPort = true))
        .header("Proxy-Connection", "Keep-Alive") // For HTTP/1.0 proxies like Squid.
        .header("User-Agent", USER_AGENT)
        .build()

    val fakeAuthChallengeResponse =
      Response.Builder()
        .request(proxyConnectRequest)
        .protocol(Protocol.HTTP_1_1)
        .code(HttpURLConnection.HTTP_PROXY_AUTH)

    if (writerTask != null) {
      taskQueue.schedule(writerTask)
    }
  }

  /**
   * Attempts to remove a single frame from a queue and send it. This prefers to write urgent pongs
   * before less urgent messages and close frames. For example it's possible that a caller will
   * enqueue messages followed by pongs, but this sends pongs followed by messages. Pongs are always
   * written in the order they were enqueued.

  /**
   * @param forObsoleteRfc2965 true to include a leading `.` on the domain pattern. This is
   *     necessary for `example.com` to match `www.example.com` under RFC 2965. This extra dot is
   *     ignored by more recent specifications.
   */
  internal fun toString(forObsoleteRfc2965: Boolean): String {
    return buildString {
      append(name)
      append('=')
      append(value)

      if (persistent) {

    // Cause the cache trim job to fail.
    filesystem.setFaultyDelete(cacheDir / "a.0", true)
    taskFaker.runNextTask()

    // An edit should now add a job to clean up if the most recent trim failed.
    assertThat(cache.edit("b")).isNull()
    taskFaker.runNextTask()

    // Confirm a successful cache trim now allows edits.
    filesystem.setFaultyDelete(cacheDir / "a.0", false)

   * compressed stream that is terminated in a web socket frame even though the DEFLATE stream is
   * 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.