val source1 = relay.newSource()!!.buffer()
    val source2 = relay.newSource()!!.buffer()
    assertThat(source1.readUtf8(5)).isEqualTo("abcde")
    assertThat(source2.readUtf8(5)).isEqualTo("abcde")
    assertThat(source2.readUtf8(5)).isEqualTo("fghij")
    assertThat(source1.readUtf8(5)).isEqualTo("fghij")
    assertThat(source1.exhausted()).isTrue()
    assertThat(source2.exhausted()).isTrue()
    source1.close()

  val handshake: Handshake?
  val requestUrl: HttpUrl?

  @get:JvmName("-deprecated_utf8Body")
  @Deprecated(
    message = "Use body.readUtf8()",
    replaceWith = ReplaceWith("body.readUtf8()"),
    level = DeprecationLevel.ERROR,
  )
  val utf8Body: String
    get() = body.readUtf8()

  val tlsVersion: TlsVersion?
    get() = handshake?.tlsVersion

  internal constructor(
    requestLine: String,

    operatorA.write(36, bufferA, 33)
    operatorB.read(0, bufferB, 9)
    assertThat(bufferB.readUtf8()).isEqualTo("Dodgson!\n")
    operatorA.read(9, bufferA, 27)
    assertThat(bufferA.readUtf8()).isEqualTo("You shouldn't use my name.\n")
    operatorB.read(36, bufferB, 33)
    assertThat(bufferB.readUtf8()).isEqualTo("Dodgson, we've got Dodgson here!\n")
  }

  @Test
  fun largeRead() {

    testRequest {
      val url = URI(mockServer.endpoint + "/person?name=peter").toURL()

      val connection = url.openConnection() as HttpURLConnection

      assertThat(connection.inputStream.source().buffer().readUtf8()).contains("Peter the person")
    }
  }

  @Test
  fun testUrlConnectionPlaintextProxied() {
    testRequest {
      val proxy =
        Proxy(
          Proxy.Type.HTTP,

  fun testFileDescriptorRead() {
    assertOnFileDescriptor(content = "Hello") { fd ->
      val requestBody = fd.toRequestBody()

      val buffer = Buffer()
      requestBody.writeTo(buffer)
      assertThat(buffer.readUtf8()).isEqualTo("Hello")
    }
  }

  @Test
  fun testFileDescriptorDefaultMediaType() {
    assertOnFileDescriptor { fd ->
      val requestBody = fd.toRequestBody()

    body.writeTo(out)
    assertThat(out.readUtf8()).isEqualTo(expected)
  }

  @Test
  fun encodedPair() {
    val body =
      FormBody.Builder()
        .add("sim", "ple")
        .build()
    val expected = "sim=ple"
    assertThat(body.contentLength()).isEqualTo(expected.length.toLong())
    val buffer = Buffer()
    body.writeTo(buffer)
    assertThat(buffer.readUtf8()).isEqualTo(expected)
  }

  @Test

    val body = "".decodeHex().toResponseBody(mediaType)
    val source = body.source()
    assertThat(source.exhausted()).isTrue()
    assertThat(source.readUtf8()).isEqualTo("")
  }

  @Test
  fun sourceClosesUnderlyingSource() {
    var closed = false

    val body: ResponseBody =
      object : ResponseBody() {
        override fun contentType(): MediaType? {

    val buffer = Buffer()
    for (codePoint in 0..0x10ffff) {
      val allowedByTable = table.map(codePoint, buffer)
      val tableMappedTo = buffer.readUtf8()

      val allowedByCompactTable = compactTable.map(codePoint, buffer)
      val compactTableMappedTo = buffer.readUtf8()

      assertThat(allowedByCompactTable).isEqualTo(allowedByTable)
      assertThat(compactTableMappedTo).isEqualTo(tableMappedTo)
    }
  }

        final String filePath = indexConfigPath + "/" + indexName + "/" + path;
        try {
            final String source = FileUtil.readUTF8(filePath);
            try (CurlResponse response =
                    ComponentUtil.getCurlHelper().post("/_configsync/file").param("path", path).body(source).execute()) {
                if (response.getHttpStatusCode() == 200) {

          rangesBuffer.writeByte(b2)
          rangesBuffer.writeByte(b3)
        }
      }
    }
  }

  return IdnaMappingTableData(
    sections = sectionIndexBuffer.readUtf8(),
    ranges = rangesBuffer.readUtf8(),
    mappings = mappingsBuffer.toString(),
  )
}

/**
 * If [mapping] qualifies to be encoded as [MappedRange.InlineDelta] return new instance, otherwise null.