And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.

But let's save you the time of reading the full long specification just to find those little pieces of information you need.

Let's use the tools provided by **FastAPI** to handle security.

## How it looks { #how-it-looks }

            // Reflectively inspect the private 'offset' field to assert it used the advanced fp
            Field offField = Smb2ReadRequest.class.getDeclaredField("offset");
            offField.setAccessible(true);
            long offVal = offField.getLong(req);
            assertEquals(2L, offVal, "Request offset should match skipped bytes");
        }

        @Test
        @DisplayName("read(byte[]) delegates to read(byte[],off,len)")

    public final V get() throws InterruptedException, ExecutionException {
      return super.get();
    }

    @CanIgnoreReturnValue
    @Override
    @ParametricNullness
    public final V get(long timeout, TimeUnit unit)
        throws InterruptedException, ExecutionException, TimeoutException {
      return super.get(timeout, unit);
    }

    @Override
    public final boolean isDone() {

errors.failed_to_process_sso_request=Échec du traitement d'une requête : {0}

errors.property_required={0} est requis.
errors.property_type_integer={0} doit être un entier.
errors.property_type_long={0} doit être un long.
errors.property_type_float={0} doit être un flottant.
errors.property_type_double={0} doit être un double.
errors.property_type_date={0} doit être une date.

    }

    /**
     * Checks if the given filename is a log file based on its extension.
     *
     * @param name the filename to check
     * @return true if the file is a log file (.log or .log.gz), false otherwise
     */
    protected boolean isLogFilename(final String name) {
        return name.endsWith(".log") || name.endsWith(".log.gz");
    }

    /**

    private static final byte[] TEST_DATA = "testdata".getBytes();
    private static final byte[] EMPTY_DATA = new byte[0];

    static {
        // Initialize long key with predictable data
        Arrays.fill(LONG_TEST_KEY, (byte) 0xAB);
    }

    @Test
    void testConstructorWithNormalKey() {
        // Test constructor with a normal length key

    assertThrows(IndexOutOfBoundsException.class, () -> sink.putBytes(new byte[8], 0, 16));
    assertThrows(IndexOutOfBoundsException.class, () -> sink.putBytes(new byte[8], 0, -1));
  }

  /**
   * This test creates a long random sequence of inputs, then a lot of differently configured sinks
   * process it; all should produce the same answer, the only difference should be the number of
   * process()/processRemaining() invocations, due to alignment.

        if (StringUtil.isBlank(getOnlineHelpSupportedLangs())) {
            return false;
        }
        return split(getOnlineHelpSupportedLangs(), ",").get(stream -> stream.filter(StringUtil::isNotBlank).anyMatch(s -> s.equals(lang)));
    }

    String getForumSupportedLangs();

    default boolean isForumSupportedLang(final String lang) {

      bitCount += CODE_BIT_COUNTS[byteIn].toLong()
    }

    return ((bitCount + 7) shr 3).toInt() // Round up to an even byte.
  }

  fun decode(
    source: BufferedSource,
    byteCount: Long,
    sink: BufferedSink,
  ) {
    var node = root
    var accumulator = 0
    var accumulatorBitCount = 0
    for (i in 0 until byteCount) {
      val byteIn = source.readByte() and 0xff

Or you might have any other way to communicate with the WebSocket endpoint.

---

But for this example, we'll use a very simple HTML document with some JavaScript, all inside a long string.

This, of course, is not optimal and you wouldn't use it for production.

In production you would have one of the options above.