immediate exception.
 *  New: Headers can be redacted in `HttpLoggingInterceptor`.
 *  New: `Headers.Builder` now accepts dates.
 *  New: OkHttp now accepts `java.time.Duration` for timeouts on Java 8+ and Android 26+.
 *  New: `Challenge` includes all authentication parameters.

If you set it to `--forwarded-allow-ips="*"` it would trust all the incoming IPs.

If your **server** is behind a trusted **proxy** and only the proxy talks to it, this would make it accept whatever is the IP of that **proxy**.

<div class="termy">

```console
$ fastapi run --forwarded-allow-ips="*"

      }
      if (obj instanceof Wrapper) {
        Wrapper<?> that = (Wrapper<?>) obj; // note: not necessarily a Wrapper<T>

        if (this.equivalence.equals(that.equivalence)) {
          /*
           * We'll accept that as sufficient "proof" that either equivalence should be able to
           * handle either reference, so it's safe to circumvent compile-time type checking.
           */
          @SuppressWarnings("unchecked")

            resp.setContentType("text/plain");
            resp.setContentType(URLConnection.guessContentTypeFromName(url));
            resp.setHeader("Content-Length", file.length() + "");
            resp.setHeader("Accept-Ranges", "Bytes");

            while ((n = in.read(buf)) != -1) {
                out.write(buf, 0, n);
            }
        }
    }

    /**
     * Compares two SMB files by name

    return (ImmutableList<E>) EMPTY;
  }

  /**
   * Returns an immutable list containing a single element. This list behaves and performs
   * comparably to {@link Collections#singletonList}, but will not accept a null element. It is
   * preferable mainly for consistency and maintainability of your code.
   *
   * @throws NullPointerException if the element is null
   */
  public static <E> ImmutableList<E> of(E e1) {

      public void forEach(Consumer<? super T> action) {
        checkNotNull(action);
        unfiltered.forEach(
            (@ParametricNullness T a) -> {
              if (retainIfTrue.test(a)) {
                action.accept(a);
              }
            });
      }

      @Override
      public Spliterator<T> spliterator() {
        return CollectSpliterators.filter(unfiltered.spliterator(), retainIfTrue);
      }

        } else {
          assertTrue(desc, isGuarded(method));
        }
        // we can't make an assumption about isTimed() because now we have single-parameter methods
        // that accept a java.time.Duration
        assertFalse(desc, isLongTimeUnitBased(method));
        break;
      case 2:
        if (isDurationBased(method)) {
          assertTrue(desc, isGuarded(method));
        } else {

   * row and column iteration ordering of the returned table.
   *
   * @throws NullPointerException if {@code table} has a null key
   */
  @SuppressWarnings("unchecked") // TODO(cpovirk): Make constructor accept wildcard types?
  public static <R, C, V> ArrayTable<R, C, V> create(Table<R, C, ? extends @Nullable V> table) {
    return (table instanceof ArrayTable)
        ? new ArrayTable<R, C, V>((ArrayTable<R, C, V>) table)

   *
   * @since 21.0
   */
  default void forEach(BiConsumer<? super K, ? super V> action) {
    checkNotNull(action);
    entries().forEach(entry -> action.accept(entry.getKey(), entry.getValue()));
  }

  /**
   * Returns a view of this multimap as a {@code Map} from each distinct key to the nonempty

                resp.setContentType(mimeMap.getMimeType(type));
            }
            resp.setHeader("Content-Length", file.length() + "");
            resp.setHeader("Accept-Ranges", "Bytes");

            while ((n = in.read(buf)) != -1) {
                out.write(buf, 0, n);
            }
        }
        // IOException handling is done by calling code
    }

    /**