*
 * As bytes are returned from upstream they are written to a local file. Downstream sources read
 * from this file as necessary.
 *
 * This class also keeps a small buffer of bytes recently read from upstream. This is intended to
 * save a small amount of file I/O and data copying.
 */
class Relay private constructor(
  /**
   * Read/write persistence of the upstream source and its metadata. Its layout is as follows:
   *

    ).isTrue()
  }

  internal enum class WriteKind {
    BYTE_BY_BYTE,
    SMALL_BUFFERS,
    LARGE_BUFFERS,
  }

  @Test
  fun chunkedUpload_byteByByte() {
    doUpload(TransferKind.CHUNKED, WriteKind.BYTE_BY_BYTE)
  }

  @Test
  fun chunkedUpload_smallBuffers() {
    doUpload(TransferKind.CHUNKED, WriteKind.SMALL_BUFFERS)
  }

  @Test
  fun chunkedUpload_largeBuffers() {

    assertThat(adapter.fromDer(bytes)).isNull()
  }

  /** Make the claimed length of a nested object larger than the enclosing object. */
  @Test fun `large object inside small object`() {
    val bytes = "301b300d06092a864886f70d010101050003847fffffff000504030201".decodeHex()
    assertFailsWith<ProtocolException> {
      CertificateAdapters.subjectPublicKeyInfo.fromDer(bytes)

02A9..02AD    ; valid                                  # 3.0  LATIN SMALL LETTER FENG DIGRAPH..LATIN LETTER BIDENTAL PERCUSSIVE
02AE..02AF    ; valid                                  # 4.0  LATIN SMALL LETTER TURNED H WITH FISHHOOK..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
02B0          ; mapped                 ; 0068          # 1.1  MODIFIER LETTER SMALL H

 *  Fix: Don't lose HTTP/2 flow control bytes when incoming data races with a stream close. If this
    happened enough then eventually the connection would stall.

 *  Fix: Acknowledge and apply inbound HTTP/2 settings atomically. Previously we had a race where we
    could use new flow control capacity before acknowledging it, causing strict HTTP/2 servers to
    fail the call.

Contributing
============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

Contributing
============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

  internal inner class FramingSink(
    /** True if either side has cleanly shut down this stream. We shall send no more bytes. */
    var finished: Boolean = false,
  ) : Sink {
    /**
     * Buffer of outgoing data. This batches writes of small writes into this sink as larges frames
     * written to the outgoing connection. Batching saves the (small) framing overhead.
     */
    private val sendBuffer = Buffer()

Start by telling us what problem you’re trying to solve. Often a solution already exists!

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.idn

import okio.BufferedSink

/**
 * An IDNA mapping table optimized for small code and data size.
 *
 * Code Points in Sections
 * =======================
 *
 * The full range of code points is 0..0x10fffe. We can represent any of these code points with 21
 * bits.
 *