when you call `contains(null)` on them!
 *  Fix: Retain binary-compatibility in `okhttp3.internal.HttpHeaders.hasBody()`. Some unscrupulous
    coders call this and we don't want their users to suffer.


## Version 4.0.0

_2019-06-26_

**This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade

    testSecureStreamingPost(TransferKind.FIXED_LENGTH)
  }

  @Test
  fun secureChunkedStreaming() {
    testSecureStreamingPost(TransferKind.CHUNKED)
  }

  /**
   * Users have reported problems using HTTPS with streaming request bodies.
   * http://code.google.com/p/android/issues/detail?id=12860
   */
  private fun testSecureStreamingPost(streamingMode: TransferKind) {

01-01 12:53:32.818 10999 11090 D OkHttp  : [56 ms] connectionReleased
01-01 12:53:32.818 10999 11090 D OkHttp  : [56 ms] callEnd
```

3. Run tests using gradle

```
$ ANDROID_SDK_ROOT=/Users/myusername/Library/Android/sdk ./gradlew :android-test:connectedCheck -PandroidBuild=true
...
> Task :android-test:connectedDebugAndroidTest
...
11:55:40 V/InstrumentationResultParser: Time: 13.271

    }
    assertThat(socket.enabledCipherSuites)
      .containsExactly(*expectedCipherSuites.toTypedArray())
  }

  @Test
  fun tls_stringCiphersAndVersions() {
    // Supporting arbitrary input strings allows users to enable suites and versions that are not
    // yet known to the library, but are supported by the platform.
    ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
      .cipherSuites("MAGIC-CIPHER")

**This release introduces new Kotlin-friendly APIs.** When we migrated OkHttp from Java to Kotlin in
OkHttp 4.0, we kept our Java-first APIs. With 5.0 we're continuing to support Java and adding
additional improvements for Kotlin users. In this alpha we're excited to skip-the-builder for
requests and remove a common source of non-null assertions (`!!`) on the response body.

Applications expected to be installed on older Android devices should consider adopting the
[Google Play Services’ ProviderInstaller][provider_installer]. This will increase security for users
and increase connectivity with web servers.

### Certificate Pinning ([.kt][CertificatePinningKotlin], [.java][CertificatePinningJava])

us.gov.pl us.in us.kg us.na us.org us.platform.sh us.reclaim.cloud usa.museum usa.oita.jp usantiques.museum usarts.museum uscountryestate.museum usculture.museum usdecorativearts.museum user.aseinet.ne.jp user.party.eus user.srcf.net usercontent.jp users.scale.virtualcloud.com.br usgarden.museum ushiku.ibaraki.jp ushistory.museum ushuaia.museum uslivinghistory.museum usr.cloud.muni.cz ustka.pl usui.fukuoka.jp usuki.oita.jp ut.us utah.museum utashinai.hokkaido.jp utazas.hu utazu.kagawa.jp uto.kumamoto.jp...

ax

// az : https://en.wikipedia.org/wiki/.az
az
com.az
net.az
int.az
gov.az
org.az
edu.az
info.az
pp.az
mil.az
name.az
pro.az
biz.az

// ba : http://nic.ba/users_data/files/pravilnik_o_registraciji.pdf
ba
com.ba
edu.ba
gov.ba
mil.ba
net.ba
org.ba

// bb : https://en.wikipedia.org/wiki/.bb
bb
biz.bb
co.bb
com.bb
edu.bb
gov.bb