services/network/public/mojom/fetch_api.mojom

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module network.mojom;

// Corresponds to Fetch request's "mode" and "use-CORS-preflight flag":
// https://fetch.spec.whatwg.org/#concept-request-mode
//
// This enum is also used in histograms. Append-only.
// See the "FetchRequestMode" enum in enums.xml.
enum FetchRequestMode {
  kSameOrigin,
  kNoCors,
  kCors,
  kCorsWithForcedPreflight,
  kNavigate,
  // Add a new type here, then update enums.xml.
};

// Corresponds to Fetch request's "redirect mode":
// https://fetch.spec.whatwg.org/#concept-request-redirect-mode
enum FetchRedirectMode {
  kFollow,
  kError,
  kManual,
};

// Corresponds to Fetch request's "credentials mode":
// https://fetch.spec.whatwg.org/#concept-request-credentials-mode
enum FetchCredentialsMode {
  kOmit,
  kSameOrigin,
  kInclude,
};

// Corresponds to response types from the Fetch spec:
// https://fetch.spec.whatwg.org/#concept-response-type
//
// This enum is also used in histograms. Append-only.
// See the "FetchResponseType" enum in enums.xml.
enum FetchResponseType {
  kBasic,
  kCors,
  kDefault,
  kError,
  kOpaque,
  kOpaqueRedirect,
  // Add a new type here, then update enums.xml.
};

// Indicates the source of a response.
// This represents the source of the outmost response of a request.
// This is used only for histograms and isn't web-exposed.
enum FetchResponseSource {
  // The source is unspecified: e.g. "new Response('hi')" or a response from
  // a service worker.
  kUnspecified,
  // The response came from network: e.g. "fetch(req)".
  kNetwork,
  // The response came from HttpCache: e.g. "fetch(req)" and there is an entry
  // in HttpCache.
  kHttpCache,
  // The response came from CacheStorage: e.g. "cache.match(req)" in a fetch
  // event handler.
  kCacheStorage,
};