return fmt.Errorf("%w (offline-disks=%d/%d)", writeErr, countErrs(p.errs, errDiskNotFound), len(p.writers))
}

// Encode reads from the reader, erasure-encodes the data and writes to the writers.
func (e *Erasure) Encode(ctx context.Context, src io.Reader, writers []io.Writer, buf []byte, quorum int) (total int64, err error) {
	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,

		},
		// Test case - 3.
		// Test case with valid "X-Amz-Algorithm" query value, but invalid  "X-Amz-Credential" header.
		// Malformed crenential.
		{
			inputQueryKeyVals: []string{
				// valid  "X-Amz-Algorithm" header.
				"X-Amz-Algorithm", signV4Algorithm,
				// valid  "X-Amz-Credential" header.
				"X-Amz-Credential", "invalid-credential",
				"X-Amz-Signature", "",
				"X-Amz-Date", "",

        prop.load(inStream);
        properties = prop;
    }

    @Override
    public synchronized void load(final Reader reader) throws IOException {
        final Properties prop = new Properties();
        lastModified = propertiesFile.lastModified();
        prop.load(reader);
        properties = prop;
    }

    @Override

* El frontend necesita obtener más datos de la API.
    * Pero necesita autenticación para ese endpoint específico.
    * Así que, para autenticarse con nuestra API, envía un `header` `Authorization` con un valor de `Bearer ` más el token.
    * Si el token contiene `foobar`, el contenido del `header` `Authorization` sería: `Bearer foobar`.

## `OAuth2PasswordBearer` de **FastAPI**

* **Editor desteği**.
* **Tip kontrolü**.

...ve **FastAPI** aynı belirteçleri şunlar için de kullanıyor:

* **Gereksinimleri tanımlama**:  request path parameters, query parameters, headers, bodies, dependencies, ve benzeri gereksinimlerden
* **Verileri çevirme**: Gönderilen veri tipinden istenilen veri tipine çevirme.
* **Verileri doğrulama**: Her gönderilen verinin:

		contentType := r.Header.Get("Content-Type")
		if contentType == "application/json" {
			w.Header().Set("Content-Type", "application/json")
			jsonEncoder := json.NewEncoder(w)
			jsonEncoder.Encode(metrics)
			return
		}

		// If not JSON, return plain text. We format it as a markdown table for
		// readability.
		w.Header().Set("Content-Type", "text/plain")
		var b strings.Builder

            throw new SmbException("File operation exceeds file bounds");
        }
    }

    /**
     * Validate SMB header fields
     *
     * @param protocolId protocol identifier
     * @param structureSize structure size field
     * @param command command code
     * @throws SmbException if header is invalid
     */
    public void validateSmbHeader(int protocolId, int structureSize, int command) throws SmbException {

            context = new PreauthIntegrityNegotiateContext(mockConfig, null, new byte[16]);

            assertNull(context.getHashAlgos());
            assertEquals(20, context.size()); // 4 header + 16 salt
        }

        @Test
        @DisplayName("Should handle null salt")
        void testNullSalt() {
            int[] hashAlgos = { PreauthIntegrityNegotiateContext.HASH_ALGO_SHA512 };

	stsRouter.Methods(http.MethodPost).MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {
		ctypeOk := wildcard.MatchSimple("application/x-www-form-urlencoded*", r.Header.Get(xhttp.ContentType))
		authOk := wildcard.MatchSimple(signV4Algorithm+"*", r.Header.Get(xhttp.Authorization))
		noQueries := len(r.URL.RawQuery) == 0
		return ctypeOk && authOk && noQueries
	}).HandlerFunc(httpTraceAll(sts.AssumeRole))

* `response`를 반환하기 전에 추가로 `response`를 수정할 수 있습니다.

{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip | 팁

사용자 정의 헤더는 <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">'X-' 접두사를 사용</a>하여 추가할 수 있습니다.