1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "quiche/quic/core/http/quic_spdy_client_session.h"
6
7 #include <string>
8 #include <utility>
9
10 #include "absl/memory/memory.h"
11 #include "quiche/quic/core/crypto/crypto_protocol.h"
12 #include "quiche/quic/core/http/quic_server_initiated_spdy_stream.h"
13 #include "quiche/quic/core/http/quic_spdy_client_stream.h"
14 #include "quiche/quic/core/http/spdy_utils.h"
15 #include "quiche/quic/core/quic_server_id.h"
16 #include "quiche/quic/core/quic_utils.h"
17 #include "quiche/quic/platform/api/quic_bug_tracker.h"
18 #include "quiche/quic/platform/api/quic_flag_utils.h"
19 #include "quiche/quic/platform/api/quic_flags.h"
20 #include "quiche/quic/platform/api/quic_logging.h"
21
22 namespace quic {
23
QuicSpdyClientSession(const QuicConfig & config,const ParsedQuicVersionVector & supported_versions,QuicConnection * connection,const QuicServerId & server_id,QuicCryptoClientConfig * crypto_config)24 QuicSpdyClientSession::QuicSpdyClientSession(
25 const QuicConfig& config, const ParsedQuicVersionVector& supported_versions,
26 QuicConnection* connection, const QuicServerId& server_id,
27 QuicCryptoClientConfig* crypto_config)
28 : QuicSpdyClientSession(config, supported_versions, connection, nullptr,
29 server_id, crypto_config) {}
30
QuicSpdyClientSession(const QuicConfig & config,const ParsedQuicVersionVector & supported_versions,QuicConnection * connection,QuicSession::Visitor * visitor,const QuicServerId & server_id,QuicCryptoClientConfig * crypto_config)31 QuicSpdyClientSession::QuicSpdyClientSession(
32 const QuicConfig& config, const ParsedQuicVersionVector& supported_versions,
33 QuicConnection* connection, QuicSession::Visitor* visitor,
34 const QuicServerId& server_id, QuicCryptoClientConfig* crypto_config)
35 : QuicSpdyClientSessionBase(connection, visitor, config,
36 supported_versions),
37 server_id_(server_id),
38 crypto_config_(crypto_config),
39 respect_goaway_(true) {}
40
41 QuicSpdyClientSession::~QuicSpdyClientSession() = default;
42
Initialize()43 void QuicSpdyClientSession::Initialize() {
44 crypto_stream_ = CreateQuicCryptoStream();
45 QuicSpdyClientSessionBase::Initialize();
46 }
47
OnProofValid(const QuicCryptoClientConfig::CachedState &)48 void QuicSpdyClientSession::OnProofValid(
49 const QuicCryptoClientConfig::CachedState& /*cached*/) {}
50
OnProofVerifyDetailsAvailable(const ProofVerifyDetails &)51 void QuicSpdyClientSession::OnProofVerifyDetailsAvailable(
52 const ProofVerifyDetails& /*verify_details*/) {}
53
ShouldCreateOutgoingBidirectionalStream()54 bool QuicSpdyClientSession::ShouldCreateOutgoingBidirectionalStream() {
55 if (!crypto_stream_->encryption_established()) {
56 QUIC_DLOG(INFO) << "Encryption not active so no outgoing stream created.";
57 QUIC_CODE_COUNT(
58 quic_client_fails_to_create_stream_encryption_not_established);
59 return false;
60 }
61 if (goaway_received() && respect_goaway_) {
62 QUIC_DLOG(INFO) << "Failed to create a new outgoing stream. "
63 << "Already received goaway.";
64 QUIC_CODE_COUNT(quic_client_fails_to_create_stream_goaway_received);
65 return false;
66 }
67 return CanOpenNextOutgoingBidirectionalStream();
68 }
69
ShouldCreateOutgoingUnidirectionalStream()70 bool QuicSpdyClientSession::ShouldCreateOutgoingUnidirectionalStream() {
71 QUIC_BUG(quic_bug_10396_1)
72 << "Try to create outgoing unidirectional client data streams";
73 return false;
74 }
75
76 QuicSpdyClientStream*
CreateOutgoingBidirectionalStream()77 QuicSpdyClientSession::CreateOutgoingBidirectionalStream() {
78 if (!ShouldCreateOutgoingBidirectionalStream()) {
79 return nullptr;
80 }
81 std::unique_ptr<QuicSpdyClientStream> stream = CreateClientStream();
82 QuicSpdyClientStream* stream_ptr = stream.get();
83 ActivateStream(std::move(stream));
84 return stream_ptr;
85 }
86
87 QuicSpdyClientStream*
CreateOutgoingUnidirectionalStream()88 QuicSpdyClientSession::CreateOutgoingUnidirectionalStream() {
89 QUIC_BUG(quic_bug_10396_2)
90 << "Try to create outgoing unidirectional client data streams";
91 return nullptr;
92 }
93
94 std::unique_ptr<QuicSpdyClientStream>
CreateClientStream()95 QuicSpdyClientSession::CreateClientStream() {
96 return std::make_unique<QuicSpdyClientStream>(
97 GetNextOutgoingBidirectionalStreamId(), this, BIDIRECTIONAL);
98 }
99
GetMutableCryptoStream()100 QuicCryptoClientStreamBase* QuicSpdyClientSession::GetMutableCryptoStream() {
101 return crypto_stream_.get();
102 }
103
GetCryptoStream() const104 const QuicCryptoClientStreamBase* QuicSpdyClientSession::GetCryptoStream()
105 const {
106 return crypto_stream_.get();
107 }
108
CryptoConnect()109 void QuicSpdyClientSession::CryptoConnect() {
110 QUICHE_DCHECK(flow_controller());
111 crypto_stream_->CryptoConnect();
112 }
113
GetNumSentClientHellos() const114 int QuicSpdyClientSession::GetNumSentClientHellos() const {
115 return crypto_stream_->num_sent_client_hellos();
116 }
117
ResumptionAttempted() const118 bool QuicSpdyClientSession::ResumptionAttempted() const {
119 return crypto_stream_->ResumptionAttempted();
120 }
121
IsResumption() const122 bool QuicSpdyClientSession::IsResumption() const {
123 return crypto_stream_->IsResumption();
124 }
125
EarlyDataAccepted() const126 bool QuicSpdyClientSession::EarlyDataAccepted() const {
127 return crypto_stream_->EarlyDataAccepted();
128 }
129
ReceivedInchoateReject() const130 bool QuicSpdyClientSession::ReceivedInchoateReject() const {
131 return crypto_stream_->ReceivedInchoateReject();
132 }
133
GetNumReceivedServerConfigUpdates() const134 int QuicSpdyClientSession::GetNumReceivedServerConfigUpdates() const {
135 return crypto_stream_->num_scup_messages_received();
136 }
137
ShouldCreateIncomingStream(QuicStreamId id)138 bool QuicSpdyClientSession::ShouldCreateIncomingStream(QuicStreamId id) {
139 if (!connection()->connected()) {
140 QUIC_BUG(quic_bug_10396_3)
141 << "ShouldCreateIncomingStream called when disconnected";
142 return false;
143 }
144 if (goaway_received() && respect_goaway_) {
145 QUIC_DLOG(INFO) << "Failed to create a new outgoing stream. "
146 << "Already received goaway.";
147 return false;
148 }
149
150 if (QuicUtils::IsClientInitiatedStreamId(transport_version(), id)) {
151 QUIC_BUG(quic_bug_10396_4)
152 << "ShouldCreateIncomingStream called with client initiated "
153 "stream ID.";
154 return false;
155 }
156
157 if (QuicUtils::IsClientInitiatedStreamId(transport_version(), id)) {
158 QUIC_LOG(WARNING) << "Received invalid push stream id " << id;
159 connection()->CloseConnection(
160 QUIC_INVALID_STREAM_ID,
161 "Server created non write unidirectional stream",
162 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
163 return false;
164 }
165
166 if (VersionHasIetfQuicFrames(transport_version()) &&
167 QuicUtils::IsBidirectionalStreamId(id, version()) &&
168 !WillNegotiateWebTransport()) {
169 connection()->CloseConnection(
170 QUIC_HTTP_SERVER_INITIATED_BIDIRECTIONAL_STREAM,
171 "Server created bidirectional stream.",
172 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
173 return false;
174 }
175
176 return true;
177 }
178
CreateIncomingStream(PendingStream * pending)179 QuicSpdyStream* QuicSpdyClientSession::CreateIncomingStream(
180 PendingStream* pending) {
181 QuicSpdyStream* stream = new QuicSpdyClientStream(pending, this);
182 ActivateStream(absl::WrapUnique(stream));
183 return stream;
184 }
185
CreateIncomingStream(QuicStreamId id)186 QuicSpdyStream* QuicSpdyClientSession::CreateIncomingStream(QuicStreamId id) {
187 if (!ShouldCreateIncomingStream(id)) {
188 return nullptr;
189 }
190 QuicSpdyStream* stream;
191 if (version().UsesHttp3() &&
192 QuicUtils::IsBidirectionalStreamId(id, version())) {
193 QUIC_BUG_IF(QuicServerInitiatedSpdyStream but no WebTransport support,
194 !WillNegotiateWebTransport())
195 << "QuicServerInitiatedSpdyStream created but no WebTransport support";
196 stream = new QuicServerInitiatedSpdyStream(id, this, BIDIRECTIONAL);
197 } else {
198 stream = new QuicSpdyClientStream(id, this, READ_UNIDIRECTIONAL);
199 }
200 ActivateStream(absl::WrapUnique(stream));
201 return stream;
202 }
203
204 std::unique_ptr<QuicCryptoClientStreamBase>
CreateQuicCryptoStream()205 QuicSpdyClientSession::CreateQuicCryptoStream() {
206 return std::make_unique<QuicCryptoClientStream>(
207 server_id_, this,
208 crypto_config_->proof_verifier()->CreateDefaultContext(), crypto_config_,
209 this, /*has_application_state = */ version().UsesHttp3());
210 }
211
212 } // namespace quic
213