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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsHTMLDNSPrefetch_h___
#define nsHTMLDNSPrefetch_h___
#include "nsCOMPtr.h"
#include "nsIRequest.h"
#include "nsString.h"
#include "nsWeakReference.h"
class nsITimer;
namespace mozilla {
class OriginAttributes;
namespace dom {
class Document;
class Link;
} // namespace dom
namespace net {
class NeckoParent;
} // namespace net
} // namespace mozilla
class nsHTMLDNSPrefetch {
public:
// The required aDocument parameter is the context requesting the prefetch -
// under certain circumstances (e.g. headers, or security context) associated
// with the context the prefetch will not be performed.
static bool IsAllowed(mozilla::dom::Document* aDocument);
static nsresult Initialize();
static nsresult Shutdown();
// Call one of the Prefetch* methods to start the lookup.
//
// The URI versions will defer DNS lookup until pageload is
// complete, while the string versions submit the lookup to
// the DNS system immediately. The URI version is somewhat lighter
// weight, but its request is also more likely to be dropped due to a
// full queue and it may only be used from the main thread.
//
// If you are planning to use the methods with the OriginAttributes param, be
// sure that you pass a partitioned one. See StoragePrincipalHelper.h to know
// more.
enum class Priority {
Low,
Medium,
High,
};
static nsresult Prefetch(mozilla::dom::Link* aElement, Priority);
static nsresult Prefetch(
const nsAString& host, bool isHttps,
const mozilla::OriginAttributes& aPartitionedPrincipalOriginAttributes,
nsIRequest::TRRMode aTRRMode, Priority);
static nsresult CancelPrefetch(
const nsAString& host, bool isHttps,
const mozilla::OriginAttributes& aPartitionedPrincipalOriginAttributes,
nsIRequest::TRRMode aTRRMode, Priority, nsresult aReason);
static nsresult CancelPrefetch(mozilla::dom::Link* aElement,
Priority, nsresult aReason);
static void LinkDestroyed(mozilla::dom::Link* aLink);
private:
static uint32_t PriorityToDNSServiceFlags(Priority);
static nsresult Prefetch(
const nsAString& host, bool isHttps,
const mozilla::OriginAttributes& aPartitionedPrincipalOriginAttributes,
uint32_t flags);
static nsresult CancelPrefetch(
const nsAString& hostname, bool isHttps,
const mozilla::OriginAttributes& aPartitionedPrincipalOriginAttributes,
uint32_t flags, nsresult aReason);
friend class mozilla::net::NeckoParent;
};
#endif
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