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fb658ca282
Its predecessor is being used directly by at least one Chromium function. Bug: webrtc:12598 Change-Id: I0c521f03cf6664036a48d5d45dcacaa74ae8582c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/322800 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Auto-Submit: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40896}
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
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* Copyright 2023 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_ASYNC_DNS_RESOLVER_H_
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#define RTC_BASE_ASYNC_DNS_RESOLVER_H_
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#include <vector>
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#include "api/async_dns_resolver.h"
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#include "api/sequence_checker.h"
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#include "api/task_queue/pending_task_safety_flag.h"
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#include "rtc_base/ref_counted_object.h"
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#include "rtc_base/system/rtc_export.h"
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#include "rtc_base/thread_annotations.h"
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namespace webrtc {
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// This file contains a default implementation of
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// webrtc::AsyncDnsResolverInterface, for use when there is no need for special
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// treatment.
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class AsyncDnsResolverResultImpl : public AsyncDnsResolverResult {
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public:
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bool GetResolvedAddress(int family, rtc::SocketAddress* addr) const override;
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// Returns error from resolver.
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int GetError() const override;
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private:
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friend class AsyncDnsResolver;
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RTC_NO_UNIQUE_ADDRESS webrtc::SequenceChecker sequence_checker_;
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rtc::SocketAddress addr_ RTC_GUARDED_BY(sequence_checker_);
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std::vector<rtc::IPAddress> addresses_ RTC_GUARDED_BY(sequence_checker_);
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int error_ RTC_GUARDED_BY(sequence_checker_);
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};
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class RTC_EXPORT AsyncDnsResolver : public AsyncDnsResolverInterface {
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public:
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AsyncDnsResolver();
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~AsyncDnsResolver();
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// Start address resolution of the hostname in `addr`.
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void Start(const rtc::SocketAddress& addr,
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absl::AnyInvocable<void()> callback) override;
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// Start address resolution of the hostname in `addr` matching `family`.
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void Start(const rtc::SocketAddress& addr,
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int family,
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absl::AnyInvocable<void()> callback) override;
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const AsyncDnsResolverResult& result() const override;
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private:
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class State;
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ScopedTaskSafety safety_; // To check for client going away
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rtc::scoped_refptr<State> state_; // To check for "this" going away
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AsyncDnsResolverResultImpl result_;
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absl::AnyInvocable<void()> callback_;
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};
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} // namespace webrtc
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#endif // RTC_BASE_ASYNC_DNS_RESOLVER_H_
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