var closed = false

        override fun close() {
          closed = true
        }

        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {
          check(!closed)
          return data.read(sink, byteCount)
        }

        override fun timeout(): Timeout = Timeout.NONE
      }
    return source.buffer().asResponseBody(null, -1)
  }

    get() = stream?.isSourceComplete == true

  override val socket: Socket
    get() = stream!!

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink = stream!!.sink

  override fun writeRequestHeaders(request: Request) {
    if (stream != null) return

    val hasRequestBody = request.body != null
    val requestHeaders = http2HeadersList(request)

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)
        bufferedSink.emit()
      }
    }

  private fun uppercase(original: BufferedSink): Sink =
    object : ForwardingSink(original) {
      override fun write(
        source: Buffer,

 */
package okhttp3.internal.http

import java.io.IOException
import okhttp3.Headers
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route
import okhttp3.internal.connection.RealCall
import okio.Sink
import okio.Socket
import okio.Source

/** Encodes HTTP requests and decodes HTTP responses. */
interface ExchangeCodec {
  /** The connection or CONNECT tunnel that owns this codec. */
  val carrier: Carrier

     */
    fun newSink(index: Int): Sink {
      synchronized(this@DiskLruCache) {
        check(!done)
        if (entry.currentEditor != this) {
          return blackholeSink()
        }
        if (!entry.readable) {
          written!![index] = true
        }
        val dirtyFile = entry.dirtyFiles[index]
        val sink: Sink
        try {
          sink = fileSystem.sink(dirtyFile)

    override fun contentLength(): Long = chunk!!.size * 8L

    override fun writeTo(sink: BufferedSink) {
      try {
        var i = 0
        while (i < contentLength()) {
          sink.write(chunk!!)
          sink.flush()
          Thread.sleep(100)
          i += chunk.size
        }
      } catch (e: IOException) {
        ioe = e

      override fun contentType(): MediaType? = "text/plain".toMediaTypeOrNull()

      @Throws(IOException::class)
      override fun writeTo(sink: BufferedSink) {
        try {
          sink.writeUtf8("abc")
          sink.flush()
          Thread.sleep(sleepMillis.toLong())
          sink.writeUtf8("def")
        } catch (e: InterruptedException) {
          throw InterruptedIOException()
        }
      }
    }

              @Throws(
                IOException::class,
              )
              override fun writeTo(sink: BufferedSink) {
                for (i in 0..9) {
                  sink.writeByte(0)
                  sink.flush()
                  sleep(100)
                }
                fail("Expected connection to be closed")
              }
            },
        ),

    @Throws(IOException::class)
    override fun contentLength(): Long = delegate.contentLength()

    @Throws(IOException::class)
    override fun writeTo(sink: BufferedSink) {
      val forwardingSink =
        object : ForwardingSink(sink) {
          private var totalBytesWritten: Long = 0
          private var completed = false

          override fun write(
            source: Buffer,

import okhttp3.Response
import okhttp3.ResponseBody.Companion.toResponseBody
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.EMPTY
import okio.ByteString.Companion.encodeUtf8
import okio.Sink
import okio.buffer
import okio.gzip
import org.junit.jupiter.api.Test

class ZstdInterceptorTest {
  val zstdInterceptor = CompressionInterceptor(Zstd, Gzip)

  @Test
  fun testDecompressZstd() {