blob: 288751efa45243aef6dc1e082149148ef268363d [file] [log] [blame]
* Copyright 2023 The WebRTC Project Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <vector>
#include "api/async_dns_resolver.h"
#include "api/sequence_checker.h"
#include "api/task_queue/pending_task_safety_flag.h"
#include "rtc_base/ref_counted_object.h"
#include "rtc_base/system/rtc_export.h"
#include "rtc_base/thread_annotations.h"
namespace webrtc {
// This file contains a default implementation of
// webrtc::AsyncDnsResolverInterface, for use when there is no need for special
// treatment.
class AsyncDnsResolverResultImpl : public AsyncDnsResolverResult {
bool GetResolvedAddress(int family, rtc::SocketAddress* addr) const override;
// Returns error from resolver.
int GetError() const override;
friend class AsyncDnsResolver;
RTC_NO_UNIQUE_ADDRESS webrtc::SequenceChecker sequence_checker_;
rtc::SocketAddress addr_ RTC_GUARDED_BY(sequence_checker_);
std::vector<rtc::IPAddress> addresses_ RTC_GUARDED_BY(sequence_checker_);
int error_ RTC_GUARDED_BY(sequence_checker_);
class RTC_EXPORT AsyncDnsResolver : public AsyncDnsResolverInterface {
// Start address resolution of the hostname in `addr`.
void Start(const rtc::SocketAddress& addr,
absl::AnyInvocable<void()> callback) override;
// Start address resolution of the hostname in `addr` matching `family`.
void Start(const rtc::SocketAddress& addr,
int family,
absl::AnyInvocable<void()> callback) override;
const AsyncDnsResolverResult& result() const override;
class State;
ScopedTaskSafety safety_; // To check for client going away
rtc::scoped_refptr<State> state_; // To check for "this" going away
AsyncDnsResolverResultImpl result_;
absl::AnyInvocable<void()> callback_;
} // namespace webrtc