* including dots after the first colon. It matches IPv4 addresses as strings containing only
 * decimal digits and dots. This pattern matches strings like "a:.23" and "54" that are neither IP
 * addresses nor hostnames; they will be verified as IP addresses (which is a more strict
 * verification).
 */
private val VERIFY_AS_IP_ADDRESS = "([0-9a-fA-F]*:[0-9a-fA-F:.]*)|([\\d.]+)".toRegex()

URLs are abstract:

        # possibly modified.
        #
        # NB: a `for` loop captures its iteration list before it begins, so
        # changing the positional parameters here affects neither the number of
        # iterations, nor the values presented in `arg`.
        shift                   # remove old arg
        set -- "$@" "$arg"      # push replacement arg
    done
fi

      }
    }
  }

  @Throws(IOException::class)
  fun flush() {
    writer.flush()
  }

  /**
   * Degrades this connection such that new streams can neither be created locally, nor accepted
   * from the remote peer. Existing streams are not impacted. This is intended to permit an endpoint
   * to gracefully stop accepting new requests without harming previously established streams.
   */

This update fixes problems in 2.0.0-RC1. Read the 2.0.0-RC1 changes for
advice on upgrading from 1.x to 2.x.

 *  Fix: Don't leak connections! There was a regression in 2.0.0-RC1 where
    connections were neither closed nor pooled.
 *  Fix: Revert builder-style return types from OkHttpClient's timeout methods
    for binary compatibility with OkHttp 1.x.
 *  Fix: Don't skip client stream 1 on SPDY/3.1. This fixes SPDY connectivity to

    /**
     * Sets the handler that can accept cookies from incoming HTTP responses and provides cookies to
     * outgoing HTTP requests.
     *
     * If unset, [no cookies][CookieJar.NO_COOKIES] will be accepted nor provided.
     */
    fun cookieJar(cookieJar: CookieJar) =
      apply {
        this.cookieJar = cookieJar
      }

    /** Sets the response cache to be used to read and write cached responses. */

 * ===========================
 *
 * This is UTF-8 character data. It is indexed into by b2b3 in the ranges dataset.
 *
 * Mappings may overlap.
 *
 * ASCII-Only
 * ==========
 *
 * Neither the section index nor the ranges data use bit 0x80 anywhere. That means the data is
 * strictly ASCII. This is intended to make it efficient to encode this data as a string, and to
 * index into it as a string.
 *

   * Invoked after proxy selection.
   *
   * Note that the list of proxies is never null, but it may be a list containing
   * only [Proxy.NO_PROXY]. This comes up in several situations:
   *
   * * If neither a proxy nor proxy selector is configured.
   * * If the proxy is configured explicitly as [Proxy.NO_PROXY].
   * * If the proxy selector returns only [Proxy.NO_PROXY].
   * * If the proxy selector returns an empty list or null.
   *

changes we've made over time to OkHttp's default TLS options.

[OkHttp 3.14][OkHttp314]
------------------------

_2019-03-14_

Remove 2 TLSv1.3 cipher suites that are neither available on OkHttp’s host platforms nor enabled in releases of Chrome and Firefox.

##### RESTRICTED_TLS cipher suites

 * TLS_AES_128_GCM_SHA256[¹][tlsv13_only]
 * TLS_AES_256_GCM_SHA384[¹][tlsv13_only]
 * TLS_CHACHA20_POLY1305_SHA256[¹][tlsv13_only]

    }.also { expected ->
      assertThat(expected.message).isEqualTo("PROTOCOL_ERROR: TYPE_DATA streamId == 0")
    }
  }

  /** We do not send SETTINGS_COMPRESS_DATA = 1, nor want to. Let's make sure we error.  */
  @Test fun compressedDataFrameWhenSettingDisabled() {
    val expectedData = ByteArray(Http2.INITIAL_MAX_FRAME_SIZE)
    Arrays.fill(expectedData, 2.toByte())