}

  @Test
  fun stringEscapingIsWeird() {
    val expected =
      """
      |--AaB03x
      |Content-Disposition: form-data; name="field with spaces"; filename="filename with spaces.txt"
      |Content-Type: text/plain; charset=utf-8
      |
      |okay
      |--AaB03x
      |Content-Disposition: form-data; name="field with %22"
      |
      |"
      |--AaB03x

engages in unacceptable behavior, the Square Code of Conduct committee may take any action they deem
appropriate, up to and including a permanent ban from all of Square spaces without warning.


[codeofconduct_at]: mailto:******@****.***
[twitter_coc]: https://github.com/twitter/code-of-conduct/blob/master/code-of-conduct.md
[ubuntu_coc]: https://ubuntu.com/community/code-of-conduct

http://ExAmPlE.CoM http://other.com/ s:http p:/ h:example.com

# Spaces should fail
http://example\sexample.com

# This should fail
http://Goo%20\sgoo%7C|.com

# U+3000 is mapped to U+0020 (space) which is disallowed
http://GOO\u00a0\u3000goo.com

# Other types of space (no-break, zero-width, zero-width-no-break) are
# name-prepped away to nothing.

          override fun encode(
            writer: DerWriter,
            value: String,
          ) = writer.writeUtf8(value)
        },
    )

  /**
   * Permits alphanumerics, spaces, and these:
   *
   * ```
   *   ' () + , - . / : = ?
   * ```
   *
   * TODO(jwilson): constrain to printable string characters.
   */
  val PRINTABLE_STRING =
    BasicDerAdapter(

    // six-per-em space
    assertThat(parse("http://h/\u2006").encodedPath).isEqualTo("/%E2%80%86")
    // figure space
    assertThat(parse("http://h/\u2007").encodedPath).isEqualTo("/%E2%80%87")
    // punctuation space
    assertThat(parse("http://h/\u2008").encodedPath).isEqualTo("/%E2%80%88")
    // thin space
    assertThat(parse("http://h/\u2009").encodedPath).isEqualTo("/%E2%80%89")
    // hair space

    // 4.
    "\n".encodeUtf8(),
  )

private val optionsDot =
  Options.of(
    // 0.
    ".".encodeUtf8(),
  )

private const val DELIMITER_DOT = 0
private const val DELIMITER_SPACE = 1
private const val DELIMITER_SEMICOLON = 2
private const val DELIMITER_HASH = 3
private const val DELIMITER_NEWLINE = 4

private val optionsType =
  Options.of(
    // 0.
    "deviation ".encodeUtf8(),

 */
internal fun String.toCanonicalHost(): String? {
  val host: String = this

  // If the input contains a :, it’s an IPv6 address.
  if (":" in host) {
    // If the input is encased in square braces "[...]", drop 'em.
    val inetAddressByteArray =
      (
        if (host.startsWith("[") && host.endsWith("]")) {
          decodeIpv6(host, 1, host.length - 1)
        } else {

_2020-03-08_

 *  Fix: Don't reuse a connection on redirect if certs match but DNS does not. For better
    locality and performance OkHttp attempts to use the same pooled connection across redirects and
    follow-ups. It independently shares connections when the IP addresses and certificates match,
    even if the host names do not. In 4.4.0 we introduced a regression where we shared a connection

    for each. This changes `Address` to no longer use `ConnectionSpec`. (This is
    an incompatible API change).

 *  **`FormEncodingBuilder` now uses `%20` instead of `+` for encoded spaces.**
    Both are permitted-by-spec, but `%20` requires fewer special cases.

 *  **Okio has been updated to 1.4.0.**
     ```xml
     <dependency>
       <groupId>com.squareup.okio</groupId>

    HTTP/2 server, close all but the first connection.
 *  Fix: Fail the HTTP/2 connection if first frame isn't `SETTINGS`.
 *  Fix: Forbid spaces in header names.
 *  Fix: Don't offer to do gzip if the request is partial.
 *  Fix: MockWebServer is now usable with JUnit 5. That update [broke the rules][junit_5_rules].