# OpenAPI-Callbacks { #openapi-callbacks }

Sie könnten eine API mit einer *Pfadoperation* erstellen, die einen <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Request</abbr> an eine *externe API* auslösen könnte, welche von jemand anderem erstellt wurde (wahrscheinlich derselbe Entwickler, der Ihre API *verwenden* würde).

   * returning it. We can do this with a conditional GET.
   *
   * In a request, it means do not use a cache to satisfy the request.
   */
  @get:JvmName("noCache") val noCache: Boolean,
  /** If true, this response should not be cached. */
  @get:JvmName("noStore") val noStore: Boolean,
  /** The duration past the response's served date that it can be served without validation. */

        }
        super.prepare(next);
    }

    /**
     * Get the oplock level granted by the server
     * @return the oplockLevel
     */
    public final byte getOplockLevel() {
        return this.oplockLevel;
    }

    /**
     * Get the open flags returned by the server
     * @return the flags
     */
    public final byte getOpenFlags() {
        return this.openFlags;
    }

    private val protocols: List<String>,
  ) : InvocationHandler {
    /** Set when remote peer notifies ALPN is unsupported. */
    var unsupported: Boolean = false

    /** The protocol the server selected. */
    var selected: String? = null

    @Throws(Throwable::class)
    override fun invoke(
      proxy: Any,
      method: Method,
      args: Array<Any>?,
    ): Any? {

	// The client needs to remove the SSE-S3 header or the SSE-C headers
	ErrIncompatibleEncryptionMethod = Errorf("Server side encryption specified with both SSE-C and SSE-S3 headers")
	// ErrIncompatibleEncryptionWithCompression indicates that both data compression and SSE-C not allowed at the same time
	ErrIncompatibleEncryptionWithCompression = Errorf("Server side encryption specified with SSE-C with compression not allowed")

/**
 * Response for SMB1 TRANS_CALL_NAMED_PIPE transaction.
 *
 * This response contains the data returned from the named pipe
 * after a call transaction has been processed by the server.
 */
public class TransCallNamedPipeResponse extends SmbComTransactionResponse {

    private final byte[] outputBuffer;

    /**

import jcifs.internal.smb1.ServerMessageBlock;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * SMB1 COM_RENAME command implementation.
 *
 * This command renames a file or directory on the SMB server.
 * It takes an old filename and new filename and performs the rename operation.
 */
public class SmbComRename extends ServerMessageBlock {

    private final int searchAttributes;
    private final String oldFileName;

Sie können einen Parameter vom Typ `Response` in Ihrer *Pfadoperation-Funktion* deklarieren.

Und dann können Sie Cookies in diesem *vorübergehenden* <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>-Objekt setzen.

{* ../../docs_src/response_cookies/tutorial002_py39.py hl[1, 8:9] *}

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]
<span style="color: green;">INFO</span>:     Started server process [28722]
<span style="color: green;">INFO</span>:     Waiting for application startup.
<span style="color: green;">INFO</span>:     Application startup complete.
```

</div>

Anschließend können Sie den `status_code` in diesem *vorübergehenden* <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>-Objekt festlegen.

{* ../../docs_src/response_change_status_code/tutorial001_py39.py hl[1,9,12] *}