if (decoded != normalizeNfc(decoded)) return null

  // TODO: Must not begin with a combining mark.
  // TODO: Each character must be 'valid' or 'deviation'. Not mapped.
  // TODO: CheckJoiners from IDNA 2008
  // TODO: CheckBidi from IDNA 2008, RFC 5893, Section 2.

  return Punycode.encode(decoded)

   00A0; NO-BREAK SPACE
   1680; OGHAM SPACE MARK
   2000; EN QUAD
   2001; EM QUAD
   2002; EN SPACE
   2003; EM SPACE
   2004; THREE-PER-EM SPACE
   2005; FOUR-PER-EM SPACE
   2006; SIX-PER-EM SPACE
   2007; FIGURE SPACE
   2008; PUNCTUATION SPACE
   2009; THIN SPACE
   200A; HAIR SPACE
   200B; ZERO WIDTH SPACE
   202F; NARROW NO-BREAK SPACE
   205F; MEDIUM MATHEMATICAL SPACE

// Confirmed by registry <******@****.***> 2008-06-18
arpa
e164.arpa
in-addr.arpa
ip6.arpa
iris.arpa
uri.arpa
urn.arpa

// as : https://en.wikipedia.org/wiki/.as
as
gov.as

// asia : https://en.wikipedia.org/wiki/.asia
asia

// at : https://en.wikipedia.org/wiki/.at
// Confirmed by registry <******@****.***> 2008-06-17
at
ac.at
co.at
gv.at
or.at
sth.ac.at

    assertThat(parse("http://[2001:db8::1]/").host).isEqualTo("2001:db8::1")
    assertThat(parse("http://[2001:db8:0:0:0:0:2:1]/").host).isEqualTo("2001:db8::2:1")
    assertThat(parse("http://[2001:db8:0:1:1:1:1:1]/").host).isEqualTo("2001:db8:0:1:1:1:1:1")
    assertThat(parse("http://[2001:db8:0:0:1:0:0:1]/").host).isEqualTo("2001:db8::1:0:0:1")
    assertThat(parse("http://[2001:0:0:1:0:0:0:1]/").host).isEqualTo("2001:0:0:1::1")

    assertThat(response.code).isEqualTo(200)
    assertThat(response.message).isEqualTo("OK")
    assertContent("mp3 data", response)
  }

  @Test
  fun ntripr1() {
    server.enqueue(
      MockResponse.Builder()
        .status("SOURCETABLE 200 OK")
        .addHeader("Server: NTRIP Caster 1.5.5/1.0")
        .addHeader("Date: 23/Jan/2004:08:54:59 UTC")

        }
      }
    redQueue.schedule(task, 100.µs)

    redQueue.execute("task two", 200.µs) {
      log += "scheduledTasks=${redQueue.scheduledTasks}"
    }

    taskFaker.advanceUntil(100.µs)
    assertThat(log).containsExactly(
      "scheduledTasks=[task two, task one]",
    )

    taskFaker.advanceUntil(200.µs)
    assertThat(log).containsExactly(
      "scheduledTasks=[task two, task one]",

      var hostname = inetAddress.hostName
      if (inetAddress is Inet6Address && hostname.contains(':')) {
        // hostname is likely some form representing the IPv6 bytes
        // 2001:0db8:85a3:0000:0000:8a2e:0370:7334
        // 2001:db8:85a3::8a2e:370:7334
        // ::1
        hostname = "[$hostname]"
      }

      val localPort = socket.localPort

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

1FFF          ; disallowed                             # NA   <reserved-1FFF>
2000..200A    ; disallowed_STD3_mapped ; 0020          # 1.1  EN QUAD..HAIR SPACE
200B          ; ignored                                # 1.1  ZERO WIDTH SPACE
200C..200D    ; deviation              ;               # 1.1  ZERO WIDTH NON-JOINER..ZERO WIDTH JOINER
200E..200F    ; disallowed                             # 1.1  LEFT-TO-RIGHT MARK..RIGHT-TO-LEFT MARK

/*
 * Copyright (C) 2018 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,