fun add(
      name: String,
      value: String,
    ) = commonAdd(name, value)

    /**
     * Add a header with the specified name and value. Does validation of header names, allowing
     * non-ASCII values.
     */
    fun addUnsafeNonAscii(
      name: String,
      value: String,
    ) = apply {
      headersCheckName(name)
      addLenient(name, value)
    }

    /**

    // Less than 16,384 chars, because we index on a 14-bit index in the ranges table.
    assertThat(compactTable.mappings.length).isLessThan(1 shl 14)

    // Confirm the data strings are ASCII.
    for (dataString in listOf<String>(compactTable.sections, compactTable.ranges)) {
      for (codePoint in dataString.codePoints()) {
        assertThat(codePoint and 0x7f).isEqualTo(codePoint)
      }
    }

                break;
            case 1:
                /*
                 * Get ASCII hex value and convert to platform dependent
                 * encoding like EBCDIC perhaps
                 */
                b[0] = (byte) (Integer.parseInt(str.substring(i, i + 2), 16) & 0xFF);
                out[j] = new String(b, 0, 1, "ASCII").charAt(0);
                j++;
                i++;
                state = 0;

              "CharSource.empty[]", SourceSinkFactories.emptyCharSourceFactory(), asByteSource));
    }
    suite.addTestSuite(CharSourceTest.class);
    return suite;
  }

  private static final String STRING = ASCII + I18N;
  private static final String LINES = "foo\nbar\r\nbaz\rsomething";
  private static final ImmutableList<String> SPLIT_LINES =
      ImmutableList.of("foo", "bar", "baz", "something");

  private TestCharSource source;

                /* negotiation complete, remove the challenge object */
                ssn.removeAttribute("NtlmHttpChal");
            } else {
                final String auth = new String(Base64.decode(msg.substring(6)), "US-ASCII");
                int index = auth.indexOf(':');
                String user = index != -1 ? auth.substring(0, index) : auth;
                final String password = index != -1 ? auth.substring(index + 1) : "";

            if self.auto_error:
                raise self.make_not_authenticated_error()
            else:
                return None
        try:
            data = b64decode(param).decode("ascii")
        except (ValueError, UnicodeDecodeError, binascii.Error) as e:
            raise self.make_not_authenticated_error() from e
        username, separator, password = data.partition(":")
        if not separator:

    assertThat(verifier.verify("bar.com", session)).isTrue()
    assertThat(verifier.verify("a.bar.com", session)).isFalse()
  }

  /**
   * Ignored due to incompatibilities between Android and Java on how non-ASCII subject alt names
   * are parsed. Android fails to parse these, which means we fall back to the CN. The RI does parse
   * them, so the CN is unused.
   */
  @Test fun verifyNonAsciiSubjectAlt() {

 * @author Kurt Alfred Kluever
 */
@NullUnmarked
final class HashTestUtils {
  private HashTestUtils() {}

  /** Converts a string, which should contain only ascii-representable characters, to a byte[]. */
  static byte[] ascii(String string) {
    byte[] bytes = new byte[string.length()];
    for (int i = 0; i < string.length(); i++) {
      bytes[i] = (byte) string.charAt(i);
    }
    return bytes;
  }

 * example this converts `☃.net` to `xn--n3h.net`, and `WwW.GoOgLe.cOm` to `www.google.com`.
 * `null` will be returned if the host cannot be ToASCII encoded or if the result contains
 * unsupported ASCII characters.
 */
internal fun String.toCanonicalHost(): String? {
  val host: String = this

  // If the input contains a :, it’s an IPv6 address.
  if (":" in host) {

 * limitations under the License.
 */
package okhttp3.internal.idn

import okio.Buffer
import okio.ByteString.Companion.encodeUtf8

/**
 * An [RFC 3492] punycode decoder for converting ASCII to Unicode domain name labels. This is
 * intended for use in Internationalized Domain Names (IDNs).
 *
 * This class contains a Kotlin implementation of the pseudocode specified by RFC 3492. It includes