apply {
        val encoded =
          host.percentDecode().toCanonicalHost()
            ?: throw IllegalArgumentException("unexpected host: $host")
        this.host = encoded
      }

    fun port(port: Int) =
      apply {
        require(port in 1..65535) { "unexpected port: $port" }
        this.port = port
      }

    fun addPathSegment(pathSegment: String) =
      apply {

## Version 3.9.1

_2017-11-18_

 *  New: Recover gracefully when Android's DNS crashes with an unexpected
    `NullPointerException`.
 *  New: Recover gracefully when Android's socket connections crash with an
    unexpected `ClassCastException`.
 *  Fix: Don't include the URL's fragment in `encodedQuery()` when the query
    itself is empty.

## Version 3.9.0

          .build(),
      )
    val response = call.execute()
    assertFailsWith<IOException> {
      response.body.string()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("unexpected end of stream")
    }
    assertThat(listener.recordedEventTypes()).containsExactly(
      "CallStart",
      "ProxySelectStart",
      "ProxySelectEnd",
      "DnsStart",
      "DnsEnd",

    /**
     * Returns an immutable copy of the current contents of this set view. Does not support null
     * elements.
     *
     * <p><b>Warning:</b> this may have unexpected results if a backing set of this view uses a
     * nonstandard notion of equivalence, for example if it is a {@link TreeSet} using a comparator
     * that is inconsistent with {@link Object#equals(Object)}.
     */

        .build()

    val url = server.url("/").resolve("//android.com/foo")!!
    val port =
      when (url.scheme) {
        "https" -> 443
        "http" -> 80
        else -> error("unexpected scheme")
      }

    val call = client.newCall(Request(url))
    val response = call.execute()
    assertThat(response.body.string()).isEqualTo("ABCDE")
    assertThat(response.code).isEqualTo(200)

     * TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
     * if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
     *     throw new IllegalStateException("Unexpected default trust managers:"
     *         + Arrays.toString(trustManagers));
     * }
     * X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
     *