server.enqueue(MockResponse(code = 204))

    val endpointUrl = server.url("/endpoint")

    var request =
      Request.Builder()
        .url(endpointUrl)
        .header("Content-Type", "application/xml")
        .put(ValidRequestBody())
        .build()
    client.newCall(request).execute().use {
      assertEquals(201, it.code)
    }

    request =

  }

fun Request.Builder.commonCacheControl(cacheControl: CacheControl): Request.Builder {
  val value = cacheControl.toString()
  return when {
    value.isEmpty() -> removeHeader("Cache-Control")
    else -> header("Cache-Control", value)
  }
}

fun Request.Builder.commonGet(): Request.Builder = method("GET", null)

fun Request.Builder.commonHead(): Request.Builder = method("HEAD", null)

          + ")") : "(cache)";
      int responseCode = response.code();

      System.out.printf("%03d: %s %s%n", responseCode, url, responseSource);

      String contentType = response.header("Content-Type");
      if (responseCode != 200 || contentType == null) {
        return;
      }

      MediaType mediaType = MediaType.parse(contentType);

    )
  }

  private fun newEventSource(accept: String? = null): EventSource {
    val builder =
      Request.Builder()
        .url(server.url("/"))
    if (accept != null) {
      builder.header("Accept", accept)
    }
    val request = builder.build()
    val factory = createFactory(client)
    return factory.newEventSource(request, listener)
  }

 * part is particularly large or if the underlying source is particularly slow, the [nextPart] call
 * may be slow!
 *
 * Closing a part **does not** close this multipart reader; callers must explicitly close this with
 * [close].
 *
 * [rfc_2046]: http://www.ietf.org/rfc/rfc2046.txt
 */
class MultipartReader
  @Throws(IOException::class)
  constructor(

 * limitations under the License.
 */
package okhttp3.internal.http2

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

/** HTTP header: the name is an ASCII string, but the value can be UTF-8. */
data class Header(
  /** Name in case-insensitive ASCII encoding. */
  @JvmField val name: ByteString,
  /** Value in UTF-8 encoding. */
  @JvmField val value: ByteString,
) {

import okhttp3.internal.http.promisesBody
import okhttp3.internal.http2.Header.Companion.RESPONSE_STATUS_UTF8
import okhttp3.internal.http2.Header.Companion.TARGET_AUTHORITY
import okhttp3.internal.http2.Header.Companion.TARGET_AUTHORITY_UTF8
import okhttp3.internal.http2.Header.Companion.TARGET_METHOD
import okhttp3.internal.http2.Header.Companion.TARGET_METHOD_UTF8
import okhttp3.internal.http2.Header.Companion.TARGET_PATH

    }
  }

  private fun send404(
    stream: Http2Stream,
    path: String,
  ) {
    val responseHeaders =
      listOf(
        Header(":status", "404"),
        Header(":version", "HTTP/1.1"),
        Header("content-type", "text/plain"),
      )
    stream.writeHeaders(
      responseHeaders = responseHeaders,
      outFinished = false,
      flushHeaders = false,
    )

      // Parse each header.
      for (i in 0 until responseHeaders.size) {
        if (!responseHeaders.name(i).equals(HEADER_WEB_SOCKET_EXTENSION, ignoreCase = true)) {
          continue // Not a header we're interested in.
        }
        val header = responseHeaders.value(i)

        // Parse each extension.
        var pos = 0
        while (pos < header.length) {

  val wire: ByteString? = null,
  val headers: List<Map<String, String>>,
) : Cloneable {
  val headersList: List<Header>
    get() {
      val result = mutableListOf<Header>()
      for (inputHeader in headers) {
        val (key, value) = inputHeader.entries.iterator().next()
        result.add(Header(key, value))
      }
      return result
    }

  public override fun clone() = Case(seqno, this.wire, headers)