[okio_3_16_2]: https://square.github.io/okio/changelog/#version-3162
[okio_3_16_3]: https://square.github.io/okio/changelog/#version-3163
[okio_3_16_4]: https://square.github.io/okio/changelog/#version-3164
[okio_3_1_0]: https://square.github.io/okio/changelog/#version-310
[okio_3_2_0]: https://square.github.io/okio/changelog/#version-320
[okio_3_7_0]: https://square.github.io/okio/changelog/#version-370

 *  **Okio dependency added.** OkHttp now depends on
    [Okio](https://github.com/square/okio), an I/O library that makes it easier
    to access, store and process data. Using this library internally makes OkHttp
    faster while consuming less memory. You can write a `RequestBody` as an Okio
    `BufferedSink` and a `ResponseBody` as an Okio `BufferedSource`. Standard

 [okio.FileSystem]: https://square.github.io/okio/file_system/
 [okio_2_6_0]: https://square.github.io/okio/changelog/#version-260
 [okio_2_7_0]: https://square.github.io/okio/changelog/#version-270
 [okio_3_0_0]: https://square.github.io/okio/changelog/#version-300
 [okio_3_2_0]: https://square.github.io/okio/changelog/#version-320

import okhttp3.internal.concurrent.withLock
import okhttp3.internal.http2.flowcontrol.WindowCounter
import okhttp3.internal.toHeaderList
import okio.AsyncTimeout
import okio.Buffer
import okio.BufferedSource
import okio.Sink
import okio.Socket
import okio.Source
import okio.Timeout

/** A logical bidirectional stream. */
@Suppress("NAME_SHADOWING")
class Http2Stream internal constructor(
  val id: Int,

Here we `POST` a request body as a stream. The content of this request body is being generated as it's being written. This example streams directly into the [Okio](https://github.com/square/okio) buffered sink. Your programs may prefer an `OutputStream`, which you can get from `BufferedSink.outputStream()`.

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client = OkHttpClient()

package okhttp3.internal

import okio.ArrayIndexOutOfBoundsException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeHex
import okio.Closeable
import okio.FileNotFoundException
import okio.FileSystem
import okio.IOException
import okio.Options
import okio.Path
import okio.use

@JvmField

import okhttp3.Response
import okhttp3.ResponseBody
import okhttp3.internal.http.ExchangeCodec
import okhttp3.internal.http.RealResponseBody
import okio.Buffer
import okio.ForwardingSink
import okio.ForwardingSource
import okio.Sink
import okio.Socket
import okio.Source
import okio.buffer

/**
 * Transmits a single HTTP request and a response pair. This layers connection management and events

import okhttp3.internal.toLongOrDefault
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeBase64
import okio.ByteString.Companion.encodeUtf8
import okio.ByteString.Companion.toByteString
import okio.FileSystem
import okio.ForwardingSink
import okio.ForwardingSource
import okio.Path
import okio.Path.Companion.toOkioPath
import okio.Sink
import okio.Source
import okio.buffer

import okhttp3.MediaType.Companion.toMediaType
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.internal.and
import okio.Buffer
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.decodeHex
import okio.ForwardingSource
import okio.buffer
import org.junit.jupiter.api.Test

class ResponseBodyJvmTest {
  @Test
  fun stringEmpty() {
    val body = body("")

import okhttp3.internal.ws.WebSocketExtensions.Companion.parse
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import okio.ForwardingSink
import okio.ForwardingSource
import okio.Socket
import okio.buffer
import okio.inMemorySocketPair
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.BeforeEach