## Proxy-<abbr title="weitergeleitete Header">Forwarded-Header</abbr> { #proxy-forwarded-headers }

* the class
* the base class
* the parent class
* the subclass
* the child class
* the sibling class
* the class method

* the header
* the headers
* the authorization header
* the `Authorization` header
* the forwarded header

* the dependency injection system
* the dependency
* the dependable
* the dependant

* I/O bound
* CPU bound
* concurrency
* parallelism

///

/// info | Info

In diesem Beispiel verwenden wir zwei erfundene benutzerdefinierte Header `X-Key` und `X-Token`.

Aber in realen Fällen würden Sie bei der Implementierung von Sicherheit mehr Vorteile durch die Verwendung der integrierten [Sicherheits-Werkzeuge (siehe nächstes Kapitel)](../security/index.md) erzielen.

# Header

{* ../../docs_src/dependencies/tutorial013_an_py310.py ln[19:21] *}

Some text

{* ../../docs_src/bigger_applications/app_an_py310/internal/admin.py hl[3] title["app/internal/admin.py"] *}

Some more text

...

    @Test
    public void testDecodePartialData() {
        // Create a buffer with only standard lease data (no directory-specific data)
        byte[] buffer = new byte[56]; // Header + name + padding + standard lease data only

        // Write minimal header
        SMBUtil.writeInt4(0, buffer, 0); // Next
        SMBUtil.writeInt2(16, buffer, 4); // NameOffset
        SMBUtil.writeInt2(4, buffer, 6); // NameLength

	}
	if payloadType != "" {
		req.Header.Set(xhttp.ContentType, payloadType)
	}
	req.Header.Set(xhttp.WebhookEventPayloadCount, strconv.Itoa(payloadCount))
	req.Header.Set(xhttp.MinIOVersion, xhttp.GlobalMinIOVersion)
	req.Header.Set(xhttp.MinioDeploymentID, xhttp.GlobalDeploymentID)

	// Set user-agent to indicate MinIO release
	// version to the configured log endpoint
	req.Header.Set("User-Agent", h.config.UserAgent)

  private var state = STATE_IDLE
  private val headersReader = HeadersReader(socket.source)

  private val Response.isChunked: Boolean
    get() = "chunked".equals(header("Transfer-Encoding"), ignoreCase = true)

  private val Request.isChunked: Boolean
    get() = "chunked".equals(header("Transfer-Encoding"), ignoreCase = true)

  /**
   * Trailers received when the response body became exhausted.
   *

# Header

{* ../../docs_src/dependencies/tutorial013_an_py310.py ln[19:21] *}

Some text

{* ../../docs_src/bigger_applications/app_an_py310/internal/admin.py hl[3] title["app/internal/admin.py"] *}

Some more text

{* ../../docs_src/dependencies/tutorial013_an_py310.py ln[30:38] hl[31:33] *}

And even more text

    userResponse: Response,
    defaultDelay: Int,
  ): Int {
    val header = userResponse.header("Retry-After") ?: return defaultDelay

    // https://tools.ietf.org/html/rfc7231#section-7.1.3
    // currently ignores a HTTP-date, and assumes any non int 0 is a delay
    if (header.matches("\\d+".toRegex())) {
      return Integer.valueOf(header)
    }
    return Integer.MAX_VALUE
  }

  companion object {

        final String body = toSlackMessage(discloser);
        StreamUtil.split(slackWebhookUrls, "[,\\s]").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(url -> {
            try (CurlResponse response = Curl.post(url).header("Content-Type", "application/json").body(body).execute()) {
                if (response.getHttpStatusCode() == 200) {
                    if (logger.isDebugEnabled()) {