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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_QUIC_QUIC_SESSION_POOL_DIRECT_JOB_H_
#define NET_QUIC_QUIC_SESSION_POOL_DIRECT_JOB_H_
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_error_details.h"
#include "net/base/reconnect_notifier.h"
#include "net/base/request_priority.h"
#include "net/dns/host_resolver.h"
#include "net/dns/public/host_resolver_results.h"
#include "net/log/net_log_with_source.h"
#include "net/quic/quic_chromium_client_session.h"
#include "net/quic/quic_session_attempt.h"
#include "net/quic/quic_session_pool.h"
#include "net/quic/quic_session_pool_job.h"
#include "net/spdy/multiplexed_session_creation_initiator.h"
#include "net/third_party/quiche/src/quiche/quic/core/quic_versions.h"
namespace net {
// A DirectJob is a QuicSessionPool::Job that handles direct connections to the
// destination.
//
// A job works on behalf of a pool and a collection of requests to create a new
// QUIC session.
class QuicSessionPool::DirectJob : public QuicSessionPool::Job {
public:
DirectJob(
QuicSessionPool* pool,
quic::ParsedQuicVersion quic_version,
HostResolver* host_resolver,
QuicSessionAliasKey key,
std::unique_ptr<CryptoClientConfigHandle> client_config_handle,
bool retry_on_alternate_network_before_handshake,
RequestPriority priority,
bool use_dns_aliases,
bool require_dns_https_alpn,
int cert_verify_flags,
MultiplexedSessionCreationInitiator session_creation_initiator,
std::optional<ConnectionManagementConfig> connection_management_config,
const NetLogWithSource& net_log);
~DirectJob() override;
// QuicSessionPool::Job implementation.
int Run(CompletionOnceCallback callback) override;
void SetRequestExpectations(QuicSessionRequest* request) override;
void UpdatePriority(RequestPriority old_priority,
RequestPriority new_priority) override;
void PopulateNetErrorDetails(NetErrorDetails* details) const override;
private:
int DoLoop(int rv);
int DoResolveHost();
int DoResolveHostComplete(int rv);
int DoAttemptSession();
void OnResolveHostComplete(int rv);
void OnSessionAttemptComplete(int rv);
base::WeakPtr<DirectJob> GetWeakPtr() { return weak_factory_.GetWeakPtr(); }
enum IoState {
STATE_NONE,
STATE_RESOLVE_HOST,
STATE_RESOLVE_HOST_COMPLETE,
STATE_ATTEMPT_SESSION,
};
// Returns whether the client should be SVCB-optional when connecting to
// `results`.
bool IsSvcbOptional(
base::span<const HostResolverEndpointResult> results) const;
IoState io_state_ = STATE_RESOLVE_HOST;
// TODO(bashi): Rename to `alt_svc_quic_version_` or `known_quic_version_`?
const quic::ParsedQuicVersion quic_version_;
const raw_ptr<HostResolver> host_resolver_;
const bool use_dns_aliases_;
const bool require_dns_https_alpn_;
const int cert_verify_flags_;
const bool retry_on_alternate_network_before_handshake_;
bool host_resolution_finished_ = false;
HostResolverEndpointResult endpoint_result_;
CompletionOnceCallback callback_;
std::unique_ptr<HostResolver::ResolveHostRequest> resolve_host_request_;
base::TimeTicks dns_resolution_start_time_;
base::TimeTicks dns_resolution_end_time_;
std::unique_ptr<QuicSessionAttempt> session_attempt_;
const MultiplexedSessionCreationInitiator session_creation_initiator_;
std::optional<ConnectionManagementConfig> connection_management_config_;
base::WeakPtrFactory<DirectJob> weak_factory_{this};
};
} // namespace net
#endif // NET_QUIC_QUIC_SESSION_POOL_DIRECT_JOB_H_
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