------------------------

_2019-02-04_

Remove TLSv1.1 and TLSv1 from MODERN_TLS. Change COMPATIBLE_TLS to support all TLS versions.

##### RESTRICTED_TLS versions

* TLSv1.3
* TLSv1.2

##### MODERN_TLS versions

* TLSv1.3
* TLSv1.2
* **REMOVED:** ~~TLSv1.1~~
* **REMOVED:** ~~TLSv1~~

##### COMPATIBLE_TLS versions

* **NEW:** TLSv1.3
* **NEW:** TLSv1.2
* **NEW:** TLSv1.1
* TLSv1

[OkHttp 3.12][OkHttp312]

HTTPS
=====

OkHttp attempts to balance two competing concerns:

 * **Connectivity** to as many hosts as possible. That includes advanced hosts that run the latest versions of [boringssl](https://boringssl.googlesource.com/boringssl/) and less out of date hosts running older versions of [OpenSSL](https://www.openssl.org/).

 */
package okhttp3.slack;

import java.io.Closeable;
import java.io.IOException;
import okhttp3.WebSocket;
import okhttp3.Response;
import okhttp3.WebSocketListener;

/** A realtime messaging session. */
public final class RtmSession extends WebSocketListener implements Closeable {
  private final SlackApi slackApi;

  /** Guarded by this. */
  private WebSocket webSocket;

  public RtmSession(SlackApi slackApi) {

Security
========

## Supported Versions

| Version | Supported           | Notes                                        |
| ------- | ------------------- | -------------------------------------------- |
| 5.x     | ✅                  | APIs subject to change in alpha releases.    |
| 4.x     | ✅                  | Android 5.0+ (API level 21+) and on Java 8+. |
| 3.x     | ❌ Ended 2021-12-31 | Android 2.3+ (API level 9+) and Java 7+.     |

    val sink = GzipSink(result).buffer()
    sink.writeUtf8(data)
    sink.close()
    return result
  }

  companion object {
    private val NULL_HOSTNAME_VERIFIER = HostnameVerifier { hostname, session -> true }
  }

      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }

    assertEquals(2, sessionIds.size)
    assertNotEquals(sessionIds[0], sessionIds[1])
    assertThat(sessionIds[0]).isNotEmpty()
  }

  private fun enableTls() {
    client =
      client.newBuilder()
        .sslSocketFactory(

    level = DeprecationLevel.ERROR,
  )
  fun cipherSuites(): List<CipherSuite>? = cipherSuites

  /**
   * Returns the TLS versions to use when negotiating a connection. Returns null if all of the SSL
   * socket's enabled TLS versions should be used.
   */
  @get:JvmName("tlsVersions")
  val tlsVersions: List<TlsVersion>?
    get() {
      return tlsVersionsAsString?.map { TlsVersion.forJavaName(it) }

-keeppackagenames okhttp3.internal.publicsuffix.*
-adaptresourcefilenames okhttp3/internal/publicsuffix/PublicSuffixDatabase.gz

# Animal Sniffer compileOnly dependency to ensure APIs are compatible with older versions of Java.
-dontwarn org.codehaus.mojo.animal_sniffer.*

# OkHttp platform used only on JVM and when Conscrypt and other security providers are available.
-dontwarn okhttp3.internal.platform.**
-dontwarn org.conscrypt.**

 * limitations under the License.
 */
package okhttp3.internal.idn

/** Recipe to build an `IdnaMappingTable`. */
class IdnaMappingTableData(
  val sections: String,
  val ranges: String,
  val mappings: String,

    this.bodySize = bodySize
    this.body = body
    this.sequenceNumber = sequenceNumber
    this.failure = failure

    if (socket is SSLSocket) {
      try {
        this.handshake = socket.session.handshake()
      } catch (e: IOException) {
        throw IllegalArgumentException(e)
      }
    } else {
      this.handshake = null
    }

    if (requestLine.isNotEmpty()) {