platform.assumeHttp2Support()
    setsNegotiatedProtocolHeader(Protocol.HTTP_2)
  }

  private fun setsNegotiatedProtocolHeader(protocol: Protocol) {
    enableProtocol(protocol)
    server.enqueue(
      MockResponse(body = "A"),
    )
    client =
      client
        .newBuilder()
        .protocols(Arrays.asList(protocol, Protocol.HTTP_1_1))
        .build()

has been replaced with a new synthetic header, `OkHttp-Selected-Protocol`.

##### Changes

 * New: Support for `HTTP-draft-09/2.0`.
 * New: Support for `spdy/3.1`. Dropped support for `spdy/3`.
 * New: Use ALPN on Android platforms that support it (4.4+)
 * New: CacheControl model and parser.
 * New: Protocol selection in MockWebServer.
 * Fix: Route selection shouldn't use TLS modes that we know will fail.

Ein <abbr title="Ursprung">Origin</abbr> ist die Kombination aus Protokoll (`http`, `https`), Domain (`myapp.com`, `localhost`, `localhost.tiangolo.com`) und Port (`80`, `443`, `8080`).

Alle folgenden sind also unterschiedliche Origins:

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Auch wenn sie alle in `localhost` sind, verwenden sie unterschiedliche Protokolle oder Ports, daher sind sie unterschiedliche „Origins“.

import java.net.ProtocolException
import okhttp3.Protocol
import okhttp3.Response
import okio.IOException

/** An HTTP response status line like "HTTP/1.1 200 OK". */
class StatusLine(
  @JvmField val protocol: Protocol,
  @JvmField val code: Int,
  @JvmField val message: String,
) {
  override fun toString(): String =
    buildString {
      if (protocol == Protocol.HTTP_1_0) {
        append("HTTP/1.0")
      } else {

                }
            }
        }
    }

    /**
     * Initializes the minimum and maximum protocol versions from string values.
     *
     * @param minStr string representation of minimum protocol version
     * @param maxStr string representation of maximum protocol version
     */
    protected void initProtocolVersions(final String minStr, final String maxStr) {

   * [priorResponse] objects, which have its own [priorResponse].
   */
  @get:JvmName("request") val request: Request,
  /** Returns the HTTP protocol, such as [Protocol.HTTP_1_1] or [Protocol.HTTP_1_0]. */
  @get:JvmName("protocol") val protocol: Protocol,
  /** Returns the HTTP status message. */
  @get:JvmName("message") val message: String,
  /** Returns the HTTP status code. */
  @get:JvmName("code") val code: Int,

            }
        }
        return roleTypeList;
    }

    /**
     * Extracts role type information from FTP (File Transfer Protocol) response data.
     * Processes FTP metadata to extract file owner and group information.
     *
     * @param responseData the response data containing FTP metadata

  @Test
  @Throws(Exception::class)
  fun webSocketConnectionIsReleased() {
    // This test assumes HTTP/1.1 pooling semantics.
    client =
      client
        .newBuilder()
        .protocols(Arrays.asList(Protocol.HTTP_1_1))
        .build()
    webServer.enqueue(
      MockResponse
        .Builder()
        .code(HttpURLConnection.HTTP_NOT_FOUND)
        .body("not found!")
        .build(),

        synchronized (PROTOCOL_HANDLERS) {
            URLStreamHandler handler = (URLStreamHandler) PROTOCOL_HANDLERS.get(protocol);
            if (handler != null) {
                return handler;
            }
            if (factory != null) {
                handler = factory.createURLStreamHandler(protocol);
            }

}

public final class okhttp3/Protocol : java/lang/Enum {
	public static final field Companion Lokhttp3/Protocol$Companion;
	public static final field H2_PRIOR_KNOWLEDGE Lokhttp3/Protocol;
	public static final field HTTP_1_0 Lokhttp3/Protocol;
	public static final field HTTP_1_1 Lokhttp3/Protocol;
	public static final field HTTP_2 Lokhttp3/Protocol;
	public static final field HTTP_3 Lokhttp3/Protocol;