fun serverShutdownInput() {
    testServerClosesOutput(ShutdownInputAtEnd)
  }

  @Test
  fun serverShutdownOutput() {
    testServerClosesOutput(ShutdownOutputAtEnd)
  }

  @Test
  fun invalidHost() {
    // Note that 1234.1.1.1 is an invalid host in a URI, but URL isn't as strict.
    client =
      client.newBuilder()
        .dns(FakeDns())
        .build()
    assertFailsWith<UnknownHostException> {