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// Copyright (c) 2012 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 "quic/core/http/quic_spdy_client_session.h"
#include <string>
#include <utility>
#include "quic/core/crypto/crypto_protocol.h"
#include "quic/core/http/quic_spdy_client_stream.h"
#include "quic/core/http/spdy_utils.h"
#include "quic/core/quic_server_id.h"
#include "quic/core/quic_utils.h"
#include "quic/platform/api/quic_bug_tracker.h"
#include "quic/platform/api/quic_flag_utils.h"
#include "quic/platform/api/quic_flags.h"
#include "quic/platform/api/quic_logging.h"
#include "quic/platform/api/quic_ptr_util.h"
namespace quic {
QuicSpdyClientSession::QuicSpdyClientSession(
const QuicConfig& config,
const ParsedQuicVersionVector& supported_versions,
QuicConnection* connection,
const QuicServerId& server_id,
QuicCryptoClientConfig* crypto_config,
QuicClientPushPromiseIndex* push_promise_index)
: QuicSpdyClientSessionBase(connection,
push_promise_index,
config,
supported_versions),
server_id_(server_id),
crypto_config_(crypto_config),
respect_goaway_(true) {}
QuicSpdyClientSession::~QuicSpdyClientSession() = default;
void QuicSpdyClientSession::Initialize() {
crypto_stream_ = CreateQuicCryptoStream();
if (config()->HasClientRequestedIndependentOption(kQLVE,
Perspective::IS_CLIENT)) {
connection()->EnableLegacyVersionEncapsulation(server_id_.host());
}
QuicSpdyClientSessionBase::Initialize();
}
void QuicSpdyClientSession::OnProofValid(
const QuicCryptoClientConfig::CachedState& /*cached*/) {}
void QuicSpdyClientSession::OnProofVerifyDetailsAvailable(
const ProofVerifyDetails& /*verify_details*/) {}
bool QuicSpdyClientSession::ShouldCreateOutgoingBidirectionalStream() {
if (!crypto_stream_->encryption_established()) {
QUIC_DLOG(INFO) << "Encryption not active so no outgoing stream created.";
return false;
}
if (goaway_received() && respect_goaway_) {
QUIC_DLOG(INFO) << "Failed to create a new outgoing stream. "
<< "Already received goaway.";
return false;
}
return CanOpenNextOutgoingBidirectionalStream();
}
bool QuicSpdyClientSession::ShouldCreateOutgoingUnidirectionalStream() {
QUIC_BUG << "Try to create outgoing unidirectional client data streams";
return false;
}
QuicSpdyClientStream*
QuicSpdyClientSession::CreateOutgoingBidirectionalStream() {
if (!ShouldCreateOutgoingBidirectionalStream()) {
return nullptr;
}
std::unique_ptr<QuicSpdyClientStream> stream = CreateClientStream();
QuicSpdyClientStream* stream_ptr = stream.get();
ActivateStream(std::move(stream));
return stream_ptr;
}
QuicSpdyClientStream*
QuicSpdyClientSession::CreateOutgoingUnidirectionalStream() {
QUIC_BUG << "Try to create outgoing unidirectional client data streams";
return nullptr;
}
std::unique_ptr<QuicSpdyClientStream>
QuicSpdyClientSession::CreateClientStream() {
return std::make_unique<QuicSpdyClientStream>(
GetNextOutgoingBidirectionalStreamId(), this, BIDIRECTIONAL);
}
QuicCryptoClientStreamBase* QuicSpdyClientSession::GetMutableCryptoStream() {
return crypto_stream_.get();
}
const QuicCryptoClientStreamBase* QuicSpdyClientSession::GetCryptoStream()
const {
return crypto_stream_.get();
}
void QuicSpdyClientSession::CryptoConnect() {
DCHECK(flow_controller());
crypto_stream_->CryptoConnect();
}
int QuicSpdyClientSession::GetNumSentClientHellos() const {
return crypto_stream_->num_sent_client_hellos();
}
bool QuicSpdyClientSession::EarlyDataAccepted() const {
return crypto_stream_->EarlyDataAccepted();
}
bool QuicSpdyClientSession::ReceivedInchoateReject() const {
return crypto_stream_->ReceivedInchoateReject();
}
int QuicSpdyClientSession::GetNumReceivedServerConfigUpdates() const {
return crypto_stream_->num_scup_messages_received();
}
bool QuicSpdyClientSession::ShouldCreateIncomingStream(QuicStreamId id) {
if (!connection()->connected()) {
QUIC_BUG << "ShouldCreateIncomingStream called when disconnected";
return false;
}
if (goaway_received() && respect_goaway_) {
QUIC_DLOG(INFO) << "Failed to create a new outgoing stream. "
<< "Already received goaway.";
return false;
}
if (QuicUtils::IsClientInitiatedStreamId(transport_version(), id)) {
QUIC_BUG << "ShouldCreateIncomingStream called with client initiated "
"stream ID.";
return false;
}
if (QuicUtils::IsClientInitiatedStreamId(transport_version(), id)) {
QUIC_LOG(WARNING) << "Received invalid push stream id " << id;
connection()->CloseConnection(
QUIC_INVALID_STREAM_ID,
"Server created non write unidirectional stream",
ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
return false;
}
if (VersionHasIetfQuicFrames(transport_version()) &&
QuicUtils::IsBidirectionalStreamId(id, version())) {
connection()->CloseConnection(
QUIC_HTTP_SERVER_INITIATED_BIDIRECTIONAL_STREAM,
"Server created bidirectional stream.",
ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
return false;
}
return true;
}
QuicSpdyStream* QuicSpdyClientSession::CreateIncomingStream(
PendingStream* pending) {
QuicSpdyStream* stream =
new QuicSpdyClientStream(pending, this, READ_UNIDIRECTIONAL);
ActivateStream(QuicWrapUnique(stream));
return stream;
}
QuicSpdyStream* QuicSpdyClientSession::CreateIncomingStream(QuicStreamId id) {
if (!ShouldCreateIncomingStream(id)) {
return nullptr;
}
QuicSpdyStream* stream =
new QuicSpdyClientStream(id, this, READ_UNIDIRECTIONAL);
ActivateStream(QuicWrapUnique(stream));
return stream;
}
std::unique_ptr<QuicCryptoClientStreamBase>
QuicSpdyClientSession::CreateQuicCryptoStream() {
return std::make_unique<QuicCryptoClientStream>(
server_id_, this,
crypto_config_->proof_verifier()->CreateDefaultContext(), crypto_config_,
this, /*has_application_state = */ version().UsesHttp3());
}
bool QuicSpdyClientSession::IsAuthorized(const std::string& /*authority*/) {
return true;
}
} // namespace quic