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// Copyright (c) 2013 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 "net/third_party/quiche/src/quic/core/quic_config.h"
#include <algorithm>
#include <cstring>
#include <string>
#include "net/third_party/quiche/src/quic/core/crypto/crypto_handshake_message.h"
#include "net/third_party/quiche/src/quic/core/crypto/crypto_protocol.h"
#include "net/third_party/quiche/src/quic/core/quic_constants.h"
#include "net/third_party/quiche/src/quic/core/quic_socket_address_coder.h"
#include "net/third_party/quiche/src/quic/core/quic_utils.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flag_utils.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_macros.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_socket_address.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_uint128.h"
namespace quic {
// Reads the value corresponding to |name_| from |msg| into |out|. If the
// |name_| is absent in |msg| and |presence| is set to OPTIONAL |out| is set
// to |default_value|.
QuicErrorCode ReadUint32(const CryptoHandshakeMessage& msg,
QuicTag tag,
QuicConfigPresence presence,
uint32_t default_value,
uint32_t* out,
std::string* error_details) {
DCHECK(error_details != nullptr);
QuicErrorCode error = msg.GetUint32(tag, out);
switch (error) {
case QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND:
if (presence == PRESENCE_REQUIRED) {
*error_details = "Missing " + QuicTagToString(tag);
break;
}
error = QUIC_NO_ERROR;
*out = default_value;
break;
case QUIC_NO_ERROR:
break;
default:
*error_details = "Bad " + QuicTagToString(tag);
break;
}
return error;
}
QuicConfigValue::QuicConfigValue(QuicTag tag, QuicConfigPresence presence)
: tag_(tag), presence_(presence) {}
QuicConfigValue::~QuicConfigValue() {}
QuicNegotiableValue::QuicNegotiableValue(QuicTag tag,
QuicConfigPresence presence)
: QuicConfigValue(tag, presence), negotiated_(false) {}
QuicNegotiableValue::~QuicNegotiableValue() {}
QuicNegotiableUint32::QuicNegotiableUint32(QuicTag tag,
QuicConfigPresence presence)
: QuicNegotiableValue(tag, presence),
max_value_(0),
default_value_(0),
negotiated_value_(0) {}
QuicNegotiableUint32::~QuicNegotiableUint32() {}
void QuicNegotiableUint32::set(uint32_t max, uint32_t default_value) {
DCHECK_LE(default_value, max);
max_value_ = max;
default_value_ = default_value;
}
uint32_t QuicNegotiableUint32::GetUint32() const {
if (negotiated()) {
return negotiated_value_;
}
return default_value_;
}
// Returns the maximum value negotiable.
uint32_t QuicNegotiableUint32::GetMax() const {
return max_value_;
}
void QuicNegotiableUint32::ToHandshakeMessage(
CryptoHandshakeMessage* out) const {
if (negotiated()) {
out->SetValue(tag_, negotiated_value_);
} else {
out->SetValue(tag_, max_value_);
}
}
QuicErrorCode QuicNegotiableUint32::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
DCHECK(!negotiated());
DCHECK(error_details != nullptr);
uint32_t value;
QuicErrorCode error = ReadUint32(peer_hello, tag_, presence_, default_value_,
&value, error_details);
if (error != QUIC_NO_ERROR) {
return error;
}
return ReceiveValue(value, hello_type, error_details);
}
QuicErrorCode QuicNegotiableUint32::ReceiveValue(uint32_t value,
HelloType hello_type,
std::string* error_details) {
if (hello_type == SERVER && value > max_value_) {
*error_details = "Invalid value received for " + QuicTagToString(tag_);
return QUIC_INVALID_NEGOTIATED_VALUE;
}
set_negotiated(true);
negotiated_value_ = std::min(value, max_value_);
return QUIC_NO_ERROR;
}
QuicFixedUint32::QuicFixedUint32(QuicTag tag, QuicConfigPresence presence)
: QuicConfigValue(tag, presence),
has_send_value_(false),
has_receive_value_(false) {}
QuicFixedUint32::~QuicFixedUint32() {}
bool QuicFixedUint32::HasSendValue() const {
return has_send_value_;
}
uint32_t QuicFixedUint32::GetSendValue() const {
QUIC_BUG_IF(!has_send_value_)
<< "No send value to get for tag:" << QuicTagToString(tag_);
return send_value_;
}
void QuicFixedUint32::SetSendValue(uint32_t value) {
has_send_value_ = true;
send_value_ = value;
}
bool QuicFixedUint32::HasReceivedValue() const {
return has_receive_value_;
}
uint32_t QuicFixedUint32::GetReceivedValue() const {
QUIC_BUG_IF(!has_receive_value_)
<< "No receive value to get for tag:" << QuicTagToString(tag_);
return receive_value_;
}
void QuicFixedUint32::SetReceivedValue(uint32_t value) {
has_receive_value_ = true;
receive_value_ = value;
}
void QuicFixedUint32::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
if (has_send_value_) {
out->SetValue(tag_, send_value_);
}
}
QuicErrorCode QuicFixedUint32::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
DCHECK(error_details != nullptr);
QuicErrorCode error = peer_hello.GetUint32(tag_, &receive_value_);
switch (error) {
case QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND:
if (presence_ == PRESENCE_OPTIONAL) {
return QUIC_NO_ERROR;
}
*error_details = "Missing " + QuicTagToString(tag_);
break;
case QUIC_NO_ERROR:
has_receive_value_ = true;
break;
default:
*error_details = "Bad " + QuicTagToString(tag_);
break;
}
return error;
}
QuicFixedUint128::QuicFixedUint128(QuicTag tag, QuicConfigPresence presence)
: QuicConfigValue(tag, presence),
has_send_value_(false),
has_receive_value_(false) {}
QuicFixedUint128::~QuicFixedUint128() {}
bool QuicFixedUint128::HasSendValue() const {
return has_send_value_;
}
QuicUint128 QuicFixedUint128::GetSendValue() const {
QUIC_BUG_IF(!has_send_value_)
<< "No send value to get for tag:" << QuicTagToString(tag_);
return send_value_;
}
void QuicFixedUint128::SetSendValue(QuicUint128 value) {
has_send_value_ = true;
send_value_ = value;
}
bool QuicFixedUint128::HasReceivedValue() const {
return has_receive_value_;
}
QuicUint128 QuicFixedUint128::GetReceivedValue() const {
QUIC_BUG_IF(!has_receive_value_)
<< "No receive value to get for tag:" << QuicTagToString(tag_);
return receive_value_;
}
void QuicFixedUint128::SetReceivedValue(QuicUint128 value) {
has_receive_value_ = true;
receive_value_ = value;
}
void QuicFixedUint128::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
if (has_send_value_) {
out->SetValue(tag_, send_value_);
}
}
QuicErrorCode QuicFixedUint128::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
DCHECK(error_details != nullptr);
QuicErrorCode error = peer_hello.GetUint128(tag_, &receive_value_);
switch (error) {
case QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND:
if (presence_ == PRESENCE_OPTIONAL) {
return QUIC_NO_ERROR;
}
*error_details = "Missing " + QuicTagToString(tag_);
break;
case QUIC_NO_ERROR:
has_receive_value_ = true;
break;
default:
*error_details = "Bad " + QuicTagToString(tag_);
break;
}
return error;
}
QuicFixedTagVector::QuicFixedTagVector(QuicTag name,
QuicConfigPresence presence)
: QuicConfigValue(name, presence),
has_send_values_(false),
has_receive_values_(false) {}
QuicFixedTagVector::QuicFixedTagVector(const QuicFixedTagVector& other) =
default;
QuicFixedTagVector::~QuicFixedTagVector() {}
bool QuicFixedTagVector::HasSendValues() const {
return has_send_values_;
}
QuicTagVector QuicFixedTagVector::GetSendValues() const {
QUIC_BUG_IF(!has_send_values_)
<< "No send values to get for tag:" << QuicTagToString(tag_);
return send_values_;
}
void QuicFixedTagVector::SetSendValues(const QuicTagVector& values) {
has_send_values_ = true;
send_values_ = values;
}
bool QuicFixedTagVector::HasReceivedValues() const {
return has_receive_values_;
}
QuicTagVector QuicFixedTagVector::GetReceivedValues() const {
QUIC_BUG_IF(!has_receive_values_)
<< "No receive value to get for tag:" << QuicTagToString(tag_);
return receive_values_;
}
void QuicFixedTagVector::SetReceivedValues(const QuicTagVector& values) {
has_receive_values_ = true;
receive_values_ = values;
}
void QuicFixedTagVector::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
if (has_send_values_) {
out->SetVector(tag_, send_values_);
}
}
QuicErrorCode QuicFixedTagVector::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
DCHECK(error_details != nullptr);
QuicTagVector values;
QuicErrorCode error = peer_hello.GetTaglist(tag_, &values);
switch (error) {
case QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND:
if (presence_ == PRESENCE_OPTIONAL) {
return QUIC_NO_ERROR;
}
*error_details = "Missing " + QuicTagToString(tag_);
break;
case QUIC_NO_ERROR:
QUIC_DVLOG(1) << "Received Connection Option tags from receiver.";
has_receive_values_ = true;
receive_values_.insert(receive_values_.end(), values.begin(),
values.end());
break;
default:
*error_details = "Bad " + QuicTagToString(tag_);
break;
}
return error;
}
QuicFixedSocketAddress::QuicFixedSocketAddress(QuicTag tag,
QuicConfigPresence presence)
: QuicConfigValue(tag, presence),
has_send_value_(false),
has_receive_value_(false) {}
QuicFixedSocketAddress::~QuicFixedSocketAddress() {}
bool QuicFixedSocketAddress::HasSendValue() const {
return has_send_value_;
}
const QuicSocketAddress& QuicFixedSocketAddress::GetSendValue() const {
QUIC_BUG_IF(!has_send_value_)
<< "No send value to get for tag:" << QuicTagToString(tag_);
return send_value_;
}
void QuicFixedSocketAddress::SetSendValue(const QuicSocketAddress& value) {
has_send_value_ = true;
send_value_ = value;
}
bool QuicFixedSocketAddress::HasReceivedValue() const {
return has_receive_value_;
}
const QuicSocketAddress& QuicFixedSocketAddress::GetReceivedValue() const {
QUIC_BUG_IF(!has_receive_value_)
<< "No receive value to get for tag:" << QuicTagToString(tag_);
return receive_value_;
}
void QuicFixedSocketAddress::SetReceivedValue(const QuicSocketAddress& value) {
has_receive_value_ = true;
receive_value_ = value;
}
void QuicFixedSocketAddress::ToHandshakeMessage(
CryptoHandshakeMessage* out) const {
if (has_send_value_) {
QuicSocketAddressCoder address_coder(send_value_);
out->SetStringPiece(tag_, address_coder.Encode());
}
}
QuicErrorCode QuicFixedSocketAddress::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
QuicStringPiece address;
if (!peer_hello.GetStringPiece(tag_, &address)) {
if (presence_ == PRESENCE_REQUIRED) {
*error_details = "Missing " + QuicTagToString(tag_);
return QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND;
}
} else {
QuicSocketAddressCoder address_coder;
if (address_coder.Decode(address.data(), address.length())) {
SetReceivedValue(
QuicSocketAddress(address_coder.ip(), address_coder.port()));
}
}
return QUIC_NO_ERROR;
}
QuicConfig::QuicConfig()
: max_time_before_crypto_handshake_(QuicTime::Delta::Zero()),
max_idle_time_before_crypto_handshake_(QuicTime::Delta::Zero()),
max_undecryptable_packets_(0),
connection_options_(kCOPT, PRESENCE_OPTIONAL),
client_connection_options_(kCLOP, PRESENCE_OPTIONAL),
idle_network_timeout_seconds_(kICSL, PRESENCE_REQUIRED),
silent_close_(kSCLS, PRESENCE_OPTIONAL),
max_incoming_bidirectional_streams_(kMIBS, PRESENCE_REQUIRED),
bytes_for_connection_id_(kTCID, PRESENCE_OPTIONAL),
initial_round_trip_time_us_(kIRTT, PRESENCE_OPTIONAL),
initial_stream_flow_control_window_bytes_(kSFCW, PRESENCE_OPTIONAL),
initial_session_flow_control_window_bytes_(kCFCW, PRESENCE_OPTIONAL),
connection_migration_disabled_(kNCMR, PRESENCE_OPTIONAL),
alternate_server_address_(kASAD, PRESENCE_OPTIONAL),
support_max_header_list_size_(kSMHL, PRESENCE_OPTIONAL),
stateless_reset_token_(kSRST, PRESENCE_OPTIONAL),
max_incoming_unidirectional_streams_(kMIUS, PRESENCE_OPTIONAL) {
SetDefaults();
}
QuicConfig::QuicConfig(const QuicConfig& other) = default;
QuicConfig::~QuicConfig() {}
bool QuicConfig::SetInitialReceivedConnectionOptions(
const QuicTagVector& tags) {
if (HasReceivedConnectionOptions()) {
// If we have already received connection options (via handshake or due to
// a previous call), don't re-initialize.
return false;
}
connection_options_.SetReceivedValues(tags);
return true;
}
void QuicConfig::SetConnectionOptionsToSend(
const QuicTagVector& connection_options) {
connection_options_.SetSendValues(connection_options);
}
bool QuicConfig::HasReceivedConnectionOptions() const {
return connection_options_.HasReceivedValues();
}
QuicTagVector QuicConfig::ReceivedConnectionOptions() const {
return connection_options_.GetReceivedValues();
}
bool QuicConfig::HasSendConnectionOptions() const {
return connection_options_.HasSendValues();
}
QuicTagVector QuicConfig::SendConnectionOptions() const {
return connection_options_.GetSendValues();
}
bool QuicConfig::HasClientSentConnectionOption(QuicTag tag,
Perspective perspective) const {
if (perspective == Perspective::IS_SERVER) {
if (HasReceivedConnectionOptions() &&
ContainsQuicTag(ReceivedConnectionOptions(), tag)) {
return true;
}
} else if (HasSendConnectionOptions() &&
ContainsQuicTag(SendConnectionOptions(), tag)) {
return true;
}
return false;
}
void QuicConfig::SetClientConnectionOptions(
const QuicTagVector& client_connection_options) {
client_connection_options_.SetSendValues(client_connection_options);
}
bool QuicConfig::HasClientRequestedIndependentOption(
QuicTag tag,
Perspective perspective) const {
if (perspective == Perspective::IS_SERVER) {
return (HasReceivedConnectionOptions() &&
ContainsQuicTag(ReceivedConnectionOptions(), tag));
}
return (client_connection_options_.HasSendValues() &&
ContainsQuicTag(client_connection_options_.GetSendValues(), tag));
}
void QuicConfig::SetIdleNetworkTimeout(
QuicTime::Delta max_idle_network_timeout,
QuicTime::Delta default_idle_network_timeout) {
idle_network_timeout_seconds_.set(
static_cast<uint32_t>(max_idle_network_timeout.ToSeconds()),
static_cast<uint32_t>(default_idle_network_timeout.ToSeconds()));
}
QuicTime::Delta QuicConfig::IdleNetworkTimeout() const {
return QuicTime::Delta::FromSeconds(
idle_network_timeout_seconds_.GetUint32());
}
// TODO(ianswett) Use this for silent close on mobile, or delete.
QUIC_UNUSED void QuicConfig::SetSilentClose(bool silent_close) {
silent_close_.set(silent_close ? 1 : 0, silent_close ? 1 : 0);
}
bool QuicConfig::SilentClose() const {
return silent_close_.GetUint32() > 0;
}
void QuicConfig::SetMaxIncomingBidirectionalStreamsToSend(
uint32_t max_streams) {
max_incoming_bidirectional_streams_.SetSendValue(max_streams);
}
uint32_t QuicConfig::GetMaxIncomingBidirectionalStreamsToSend() {
return max_incoming_bidirectional_streams_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxIncomingBidirectionalStreams() {
return max_incoming_bidirectional_streams_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMaxIncomingBidirectionalStreams() {
return max_incoming_bidirectional_streams_.GetReceivedValue();
}
void QuicConfig::SetMaxIncomingUnidirectionalStreamsToSend(
uint32_t max_streams) {
max_incoming_unidirectional_streams_.SetSendValue(max_streams);
}
uint32_t QuicConfig::GetMaxIncomingUnidirectionalStreamsToSend() {
return max_incoming_unidirectional_streams_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxIncomingUnidirectionalStreams() {
return max_incoming_unidirectional_streams_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMaxIncomingUnidirectionalStreams() {
return max_incoming_unidirectional_streams_.GetReceivedValue();
}
bool QuicConfig::HasSetBytesForConnectionIdToSend() const {
return bytes_for_connection_id_.HasSendValue();
}
void QuicConfig::SetBytesForConnectionIdToSend(uint32_t bytes) {
bytes_for_connection_id_.SetSendValue(bytes);
}
bool QuicConfig::HasReceivedBytesForConnectionId() const {
return bytes_for_connection_id_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedBytesForConnectionId() const {
return bytes_for_connection_id_.GetReceivedValue();
}
void QuicConfig::SetInitialRoundTripTimeUsToSend(uint32_t rtt) {
initial_round_trip_time_us_.SetSendValue(rtt);
}
bool QuicConfig::HasReceivedInitialRoundTripTimeUs() const {
return initial_round_trip_time_us_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedInitialRoundTripTimeUs() const {
return initial_round_trip_time_us_.GetReceivedValue();
}
bool QuicConfig::HasInitialRoundTripTimeUsToSend() const {
return initial_round_trip_time_us_.HasSendValue();
}
uint32_t QuicConfig::GetInitialRoundTripTimeUsToSend() const {
return initial_round_trip_time_us_.GetSendValue();
}
void QuicConfig::SetInitialStreamFlowControlWindowToSend(
uint32_t window_bytes) {
if (window_bytes < kMinimumFlowControlSendWindow) {
QUIC_BUG << "Initial stream flow control receive window (" << window_bytes
<< ") cannot be set lower than minimum ("
<< kMinimumFlowControlSendWindow << ").";
window_bytes = kMinimumFlowControlSendWindow;
}
initial_stream_flow_control_window_bytes_.SetSendValue(window_bytes);
}
uint32_t QuicConfig::GetInitialStreamFlowControlWindowToSend() const {
return initial_stream_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialStreamFlowControlWindowBytes() const {
return initial_stream_flow_control_window_bytes_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedInitialStreamFlowControlWindowBytes() const {
return initial_stream_flow_control_window_bytes_.GetReceivedValue();
}
void QuicConfig::SetInitialSessionFlowControlWindowToSend(
uint32_t window_bytes) {
if (window_bytes < kMinimumFlowControlSendWindow) {
QUIC_BUG << "Initial session flow control receive window (" << window_bytes
<< ") cannot be set lower than default ("
<< kMinimumFlowControlSendWindow << ").";
window_bytes = kMinimumFlowControlSendWindow;
}
initial_session_flow_control_window_bytes_.SetSendValue(window_bytes);
}
uint32_t QuicConfig::GetInitialSessionFlowControlWindowToSend() const {
return initial_session_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialSessionFlowControlWindowBytes() const {
return initial_session_flow_control_window_bytes_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedInitialSessionFlowControlWindowBytes() const {
return initial_session_flow_control_window_bytes_.GetReceivedValue();
}
void QuicConfig::SetDisableConnectionMigration() {
connection_migration_disabled_.SetSendValue(1);
}
bool QuicConfig::DisableConnectionMigration() const {
return connection_migration_disabled_.HasReceivedValue();
}
void QuicConfig::SetAlternateServerAddressToSend(
const QuicSocketAddress& alternate_server_address) {
alternate_server_address_.SetSendValue(alternate_server_address);
}
bool QuicConfig::HasReceivedAlternateServerAddress() const {
return alternate_server_address_.HasReceivedValue();
}
const QuicSocketAddress& QuicConfig::ReceivedAlternateServerAddress() const {
return alternate_server_address_.GetReceivedValue();
}
void QuicConfig::SetSupportMaxHeaderListSize() {
support_max_header_list_size_.SetSendValue(1);
}
bool QuicConfig::SupportMaxHeaderListSize() const {
return support_max_header_list_size_.HasReceivedValue();
}
void QuicConfig::SetStatelessResetTokenToSend(
QuicUint128 stateless_reset_token) {
stateless_reset_token_.SetSendValue(stateless_reset_token);
}
bool QuicConfig::HasReceivedStatelessResetToken() const {
return stateless_reset_token_.HasReceivedValue();
}
QuicUint128 QuicConfig::ReceivedStatelessResetToken() const {
return stateless_reset_token_.GetReceivedValue();
}
bool QuicConfig::negotiated() const {
// TODO(ianswett): Add the negotiated parameters once and iterate over all
// of them in negotiated, ToHandshakeMessage, and ProcessPeerHello.
return idle_network_timeout_seconds_.negotiated();
}
void QuicConfig::SetCreateSessionTagIndicators(QuicTagVector tags) {
create_session_tag_indicators_ = std::move(tags);
}
const QuicTagVector& QuicConfig::create_session_tag_indicators() const {
return create_session_tag_indicators_;
}
void QuicConfig::SetDefaults() {
idle_network_timeout_seconds_.set(kMaximumIdleTimeoutSecs,
kDefaultIdleTimeoutSecs);
silent_close_.set(1, 0);
SetMaxIncomingBidirectionalStreamsToSend(kDefaultMaxStreamsPerConnection);
SetMaxIncomingUnidirectionalStreamsToSend(kDefaultMaxStreamsPerConnection);
max_time_before_crypto_handshake_ =
QuicTime::Delta::FromSeconds(kMaxTimeForCryptoHandshakeSecs);
max_idle_time_before_crypto_handshake_ =
QuicTime::Delta::FromSeconds(kInitialIdleTimeoutSecs);
max_undecryptable_packets_ = kDefaultMaxUndecryptablePackets;
SetInitialStreamFlowControlWindowToSend(kMinimumFlowControlSendWindow);
SetInitialSessionFlowControlWindowToSend(kMinimumFlowControlSendWindow);
SetSupportMaxHeaderListSize();
}
void QuicConfig::ToHandshakeMessage(
CryptoHandshakeMessage* out,
QuicTransportVersion transport_version) const {
idle_network_timeout_seconds_.ToHandshakeMessage(out);
silent_close_.ToHandshakeMessage(out);
// Do not need a version check here, max...bi... will encode
// as "MIDS" -- the max initial dynamic streams tag -- if
// doing some version other than IETF QUIC/V99.
max_incoming_bidirectional_streams_.ToHandshakeMessage(out);
if (transport_version == QUIC_VERSION_99) {
max_incoming_unidirectional_streams_.ToHandshakeMessage(out);
}
bytes_for_connection_id_.ToHandshakeMessage(out);
initial_round_trip_time_us_.ToHandshakeMessage(out);
initial_stream_flow_control_window_bytes_.ToHandshakeMessage(out);
initial_session_flow_control_window_bytes_.ToHandshakeMessage(out);
connection_migration_disabled_.ToHandshakeMessage(out);
connection_options_.ToHandshakeMessage(out);
alternate_server_address_.ToHandshakeMessage(out);
support_max_header_list_size_.ToHandshakeMessage(out);
stateless_reset_token_.ToHandshakeMessage(out);
}
QuicErrorCode QuicConfig::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
DCHECK(error_details != nullptr);
QuicErrorCode error = QUIC_NO_ERROR;
if (error == QUIC_NO_ERROR) {
error = idle_network_timeout_seconds_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error =
silent_close_.ProcessPeerHello(peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = max_incoming_bidirectional_streams_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = max_incoming_unidirectional_streams_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = bytes_for_connection_id_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = initial_round_trip_time_us_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = initial_stream_flow_control_window_bytes_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = initial_session_flow_control_window_bytes_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = connection_migration_disabled_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = connection_options_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = alternate_server_address_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = support_max_header_list_size_.ProcessPeerHello(
peer_hello, hello_type, error_details);
}
if (error == QUIC_NO_ERROR) {
error = stateless_reset_token_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
return error;
}
bool QuicConfig::FillTransportParameters(TransportParameters* params) const {
params->idle_timeout_milliseconds.set_value(
idle_network_timeout_seconds_.GetUint32() * kNumMillisPerSecond);
if (stateless_reset_token_.HasSendValue()) {
QuicUint128 stateless_reset_token = stateless_reset_token_.GetSendValue();
params->stateless_reset_token.assign(
reinterpret_cast<const char*>(&stateless_reset_token),
reinterpret_cast<const char*>(&stateless_reset_token) +
sizeof(stateless_reset_token));
}
params->max_packet_size.set_value(kMaxIncomingPacketSize);
params->initial_max_data.set_value(
initial_session_flow_control_window_bytes_.GetSendValue());
params->initial_max_stream_data_bidi_local.set_value(
initial_stream_flow_control_window_bytes_.GetSendValue());
params->initial_max_stream_data_bidi_remote.set_value(
initial_stream_flow_control_window_bytes_.GetSendValue());
params->initial_max_stream_data_uni.set_value(
initial_stream_flow_control_window_bytes_.GetSendValue());
params->initial_max_streams_bidi.set_value(
max_incoming_bidirectional_streams_.GetSendValue());
params->initial_max_streams_uni.set_value(
max_incoming_unidirectional_streams_.GetSendValue());
params->max_ack_delay.set_value(kDefaultDelayedAckTimeMs);
params->disable_migration =
connection_migration_disabled_.HasSendValue() &&
connection_migration_disabled_.GetSendValue() != 0;
if (alternate_server_address_.HasSendValue()) {
TransportParameters::PreferredAddress preferred_address;
QuicSocketAddress socket_address = alternate_server_address_.GetSendValue();
if (socket_address.host().IsIPv6()) {
preferred_address.ipv6_socket_address = socket_address;
} else {
preferred_address.ipv4_socket_address = socket_address;
}
params->preferred_address =
QuicMakeUnique<TransportParameters::PreferredAddress>(
preferred_address);
}
if (!params->google_quic_params) {
params->google_quic_params = QuicMakeUnique<CryptoHandshakeMessage>();
}
silent_close_.ToHandshakeMessage(params->google_quic_params.get());
initial_round_trip_time_us_.ToHandshakeMessage(
params->google_quic_params.get());
connection_options_.ToHandshakeMessage(params->google_quic_params.get());
return true;
}
QuicErrorCode QuicConfig::ProcessTransportParameters(
const TransportParameters& params,
HelloType hello_type,
std::string* error_details) {
// Intentionally round down to probe too often rather than not often enough.
uint64_t idle_timeout_seconds =
params.idle_timeout_milliseconds.value() / kNumMillisPerSecond;
// An idle timeout of zero indicates it is disabled (in other words, it is
// set to infinity). When the idle timeout is very high, we set it to our
// preferred maximum and still probe that often.
if (idle_timeout_seconds > kMaximumIdleTimeoutSecs ||
idle_timeout_seconds == 0) {
idle_timeout_seconds = kMaximumIdleTimeoutSecs;
}
QuicErrorCode error = idle_network_timeout_seconds_.ReceiveValue(
idle_timeout_seconds, hello_type, error_details);
if (error != QUIC_NO_ERROR) {
DCHECK(!error_details->empty());
return error;
}
if (!params.stateless_reset_token.empty()) {
QuicUint128 stateless_reset_token;
if (params.stateless_reset_token.size() != sizeof(stateless_reset_token)) {
QUIC_BUG << "Bad stateless reset token length "
<< params.stateless_reset_token.size();
*error_details = "Bad stateless reset token length";
return QUIC_INTERNAL_ERROR;
}
memcpy(&stateless_reset_token, params.stateless_reset_token.data(),
params.stateless_reset_token.size());
stateless_reset_token_.SetReceivedValue(stateless_reset_token);
}
if (params.max_packet_size.value() < kMaxOutgoingPacketSize) {
// TODO(dschinazi) act on this.
QUIC_DLOG(ERROR) << "Ignoring peer's requested max packet size of "
<< params.max_packet_size.value();
}
initial_session_flow_control_window_bytes_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_data.value(),
std::numeric_limits<uint32_t>::max()));
max_incoming_bidirectional_streams_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_streams_bidi.value(),
std::numeric_limits<uint32_t>::max()));
max_incoming_unidirectional_streams_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_streams_uni.value(),
std::numeric_limits<uint32_t>::max()));
initial_stream_flow_control_window_bytes_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_stream_data_bidi_local.value(),
std::numeric_limits<uint32_t>::max()));
connection_migration_disabled_.SetReceivedValue(
params.disable_migration ? 1u : 0u);
if (params.preferred_address != nullptr) {
if (params.preferred_address->ipv6_socket_address.port() != 0) {
alternate_server_address_.SetReceivedValue(
params.preferred_address->ipv6_socket_address);
} else if (params.preferred_address->ipv4_socket_address.port() != 0) {
alternate_server_address_.SetReceivedValue(
params.preferred_address->ipv4_socket_address);
}
}
const CryptoHandshakeMessage* peer_params = params.google_quic_params.get();
if (peer_params != nullptr) {
error =
silent_close_.ProcessPeerHello(*peer_params, hello_type, error_details);
if (error != QUIC_NO_ERROR) {
DCHECK(!error_details->empty());
return error;
}
error = initial_round_trip_time_us_.ProcessPeerHello(
*peer_params, hello_type, error_details);
if (error != QUIC_NO_ERROR) {
DCHECK(!error_details->empty());
return error;
}
error = connection_options_.ProcessPeerHello(*peer_params, hello_type,
error_details);
if (error != QUIC_NO_ERROR) {
DCHECK(!error_details->empty());
return error;
}
}
return QUIC_NO_ERROR;
}
} // namespace quic