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// Copyright (c) 2019 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.
#include "absl/strings/string_view.h"
#include "quic/core/quic_crypto_client_stream.h"
#include "quic/platform/api/quic_export.h"
#include "quic/qbone/qbone_control.pb.h"
#include "quic/qbone/qbone_control_stream.h"
#include "quic/qbone/qbone_packet_writer.h"
#include "quic/qbone/qbone_session_base.h"
namespace quic {
class QUIC_EXPORT_PRIVATE QboneClientSession
: public QboneSessionBase,
public QuicCryptoClientStream::ProofHandler {
QboneClientSession(QuicConnection* connection,
QuicCryptoClientConfig* quic_crypto_client_config,
QuicSession::Visitor* owner,
const QuicConfig& config,
const ParsedQuicVersionVector& supported_versions,
const QuicServerId& server_id,
QbonePacketWriter* writer,
QboneClientControlStream::Handler* handler);
QboneClientSession(const QboneClientSession&) = delete;
QboneClientSession& operator=(const QboneClientSession&) = delete;
~QboneClientSession() override;
// QuicSession overrides. This will initiate the crypto stream.
void Initialize() override;
// Override to create control stream at FORWARD_SECURE encryption level.
void SetDefaultEncryptionLevel(quic::EncryptionLevel level) override;
// Returns the number of client hello messages that have been sent on the
// crypto stream. If the handshake has completed then this is one greater
// than the number of round-trips needed for the handshake.
int GetNumSentClientHellos() const;
// Returns true if early data (0-RTT data) was sent and the server accepted
// it.
bool EarlyDataAccepted() const;
// Returns true if the handshake was delayed one round trip by the server
// because the server wanted proof the client controls its source address
// before progressing further. In Google QUIC, this would be due to an
// inchoate REJ in the QUIC Crypto handshake; in IETF QUIC this would be due
// to a Retry packet.
// TODO(nharper): Consider a better name for this method.
bool ReceivedInchoateReject() const;
int GetNumReceivedServerConfigUpdates() const;
bool SendServerRequest(const QboneServerRequest& request);
void ProcessPacketFromNetwork(absl::string_view packet) override;
void ProcessPacketFromPeer(absl::string_view packet) override;
// Returns true if there are active requests on this session.
bool HasActiveRequests() const;
// QboneSessionBase interface implementation.
std::unique_ptr<QuicCryptoStream> CreateCryptoStream() override;
// Instantiate QboneClientControlStream.
void CreateControlStream();
// ProofHandler interface implementation.
void OnProofValid(const QuicCryptoClientConfig::CachedState& cached) override;
void OnProofVerifyDetailsAvailable(
const ProofVerifyDetails& verify_details) override;
QuicServerId server_id() { return server_id_; }
QuicCryptoClientConfig* crypto_client_config() {
return quic_crypto_client_config_;
QuicServerId server_id_;
// Config for QUIC crypto client stream, used by the client.
QuicCryptoClientConfig* quic_crypto_client_config_;
// Passed to the control stream.
QboneClientControlStream::Handler* handler_;
// The unowned control stream.
QboneClientControlStream* control_stream_ = nullptr;
} // namespace quic