blob: 893d82233f1a33a05b66ca8cd736bdd39e92bdb9 [file] [log] [blame]
// 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 "quic/core/quic_config.h"
#include <algorithm>
#include <cstring>
#include <limits>
#include <string>
#include <utility>
#include "absl/base/attributes.h"
#include "absl/strings/string_view.h"
#include "quic/core/crypto/crypto_handshake_message.h"
#include "quic/core/crypto/crypto_protocol.h"
#include "quic/core/quic_connection_id.h"
#include "quic/core/quic_constants.h"
#include "quic/core/quic_socket_address_coder.h"
#include "quic/core/quic_types.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_socket_address.h"
#include "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) {
QUICHE_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() {}
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 (tag_ == 0) {
QUIC_BUG
<< "This parameter does not support writing to CryptoHandshakeMessage";
return;
}
if (has_send_value_) {
out->SetValue(tag_, send_value_);
}
}
QuicErrorCode QuicFixedUint32::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType /*hello_type*/,
std::string* error_details) {
QUICHE_DCHECK(error_details != nullptr);
if (tag_ == 0) {
*error_details =
"This parameter does not support reading from CryptoHandshakeMessage";
QUIC_BUG << *error_details;
return QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND;
}
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;
}
QuicFixedUint62::QuicFixedUint62(QuicTag name, QuicConfigPresence presence)
: QuicConfigValue(name, presence),
has_send_value_(false),
has_receive_value_(false) {}
QuicFixedUint62::~QuicFixedUint62() {}
bool QuicFixedUint62::HasSendValue() const {
return has_send_value_;
}
uint64_t QuicFixedUint62::GetSendValue() const {
if (!has_send_value_) {
QUIC_BUG << "No send value to get for tag:" << QuicTagToString(tag_);
return 0;
}
return send_value_;
}
void QuicFixedUint62::SetSendValue(uint64_t value) {
if (value > kVarInt62MaxValue) {
QUIC_BUG << "QuicFixedUint62 invalid value " << value;
value = kVarInt62MaxValue;
}
has_send_value_ = true;
send_value_ = value;
}
bool QuicFixedUint62::HasReceivedValue() const {
return has_receive_value_;
}
uint64_t QuicFixedUint62::GetReceivedValue() const {
if (!has_receive_value_) {
QUIC_BUG << "No receive value to get for tag:" << QuicTagToString(tag_);
return 0;
}
return receive_value_;
}
void QuicFixedUint62::SetReceivedValue(uint64_t value) {
has_receive_value_ = true;
receive_value_ = value;
}
void QuicFixedUint62::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
if (!has_send_value_) {
return;
}
uint32_t send_value32;
if (send_value_ > std::numeric_limits<uint32_t>::max()) {
QUIC_BUG << "Attempting to send " << send_value_
<< " for tag:" << QuicTagToString(tag_);
send_value32 = std::numeric_limits<uint32_t>::max();
} else {
send_value32 = static_cast<uint32_t>(send_value_);
}
out->SetValue(tag_, send_value32);
}
QuicErrorCode QuicFixedUint62::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType /*hello_type*/,
std::string* error_details) {
QUICHE_DCHECK(error_details != nullptr);
uint32_t receive_value32;
QuicErrorCode error = peer_hello.GetUint32(tag_, &receive_value32);
// GetUint32 is guaranteed to always initialize receive_value32.
receive_value_ = receive_value32;
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) {
QUICHE_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_;
}
const 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_;
}
const 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) {
QUICHE_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) {
absl::string_view 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()
: negotiated_(false),
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),
max_idle_timeout_to_send_(QuicTime::Delta::Infinite()),
max_bidirectional_streams_(kMIBS, PRESENCE_REQUIRED),
max_unidirectional_streams_(kMIUS, PRESENCE_OPTIONAL),
bytes_for_connection_id_(kTCID, PRESENCE_OPTIONAL),
initial_round_trip_time_us_(kIRTT, PRESENCE_OPTIONAL),
initial_max_stream_data_bytes_incoming_bidirectional_(0,
PRESENCE_OPTIONAL),
initial_max_stream_data_bytes_outgoing_bidirectional_(0,
PRESENCE_OPTIONAL),
initial_max_stream_data_bytes_unidirectional_(0, 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),
key_update_supported_remotely_(false),
key_update_supported_locally_(false),
alternate_server_address_ipv6_(kASAD, PRESENCE_OPTIONAL),
alternate_server_address_ipv4_(kASAD, PRESENCE_OPTIONAL),
stateless_reset_token_(kSRST, PRESENCE_OPTIONAL),
max_ack_delay_ms_(kMAD, PRESENCE_OPTIONAL),
min_ack_delay_ms_(0, PRESENCE_OPTIONAL),
ack_delay_exponent_(kADE, PRESENCE_OPTIONAL),
max_udp_payload_size_(0, PRESENCE_OPTIONAL),
max_datagram_frame_size_(0, PRESENCE_OPTIONAL),
active_connection_id_limit_(0, 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();
}
const QuicTagVector& QuicConfig::ReceivedConnectionOptions() const {
return connection_options_.GetReceivedValues();
}
bool QuicConfig::HasSendConnectionOptions() const {
return connection_options_.HasSendValues();
}
const 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));
}
const QuicTagVector& QuicConfig::ClientRequestedIndependentOptions(
Perspective perspective) const {
static const QuicTagVector* no_options = new QuicTagVector;
if (perspective == Perspective::IS_SERVER) {
return HasReceivedConnectionOptions() ? ReceivedConnectionOptions()
: *no_options;
}
return client_connection_options_.HasSendValues()
? client_connection_options_.GetSendValues()
: *no_options;
}
void QuicConfig::SetIdleNetworkTimeout(QuicTime::Delta idle_network_timeout) {
if (idle_network_timeout.ToMicroseconds() <= 0) {
QUIC_BUG << "Invalid idle network timeout " << idle_network_timeout;
return;
}
max_idle_timeout_to_send_ = idle_network_timeout;
}
QuicTime::Delta QuicConfig::IdleNetworkTimeout() const {
// TODO(b/152032210) add a QUIC_BUG to ensure that is not called before we've
// received the peer's values. This is true in production code but not in all
// of our tests that use a fake QuicConfig.
if (!received_max_idle_timeout_.has_value()) {
return max_idle_timeout_to_send_;
}
return received_max_idle_timeout_.value();
}
void QuicConfig::SetMaxBidirectionalStreamsToSend(uint32_t max_streams) {
max_bidirectional_streams_.SetSendValue(max_streams);
}
uint32_t QuicConfig::GetMaxBidirectionalStreamsToSend() const {
return max_bidirectional_streams_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxBidirectionalStreams() const {
return max_bidirectional_streams_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMaxBidirectionalStreams() const {
return max_bidirectional_streams_.GetReceivedValue();
}
void QuicConfig::SetMaxUnidirectionalStreamsToSend(uint32_t max_streams) {
max_unidirectional_streams_.SetSendValue(max_streams);
}
uint32_t QuicConfig::GetMaxUnidirectionalStreamsToSend() const {
return max_unidirectional_streams_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxUnidirectionalStreams() const {
return max_unidirectional_streams_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMaxUnidirectionalStreams() const {
return max_unidirectional_streams_.GetReceivedValue();
}
void QuicConfig::SetMaxAckDelayToSendMs(uint32_t max_ack_delay_ms) {
max_ack_delay_ms_.SetSendValue(max_ack_delay_ms);
}
uint32_t QuicConfig::GetMaxAckDelayToSendMs() const {
return max_ack_delay_ms_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxAckDelayMs() const {
return max_ack_delay_ms_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMaxAckDelayMs() const {
return max_ack_delay_ms_.GetReceivedValue();
}
void QuicConfig::SetMinAckDelayMs(uint32_t min_ack_delay_ms) {
min_ack_delay_ms_.SetSendValue(min_ack_delay_ms);
}
uint32_t QuicConfig::GetMinAckDelayToSendMs() const {
return min_ack_delay_ms_.GetSendValue();
}
bool QuicConfig::HasReceivedMinAckDelayMs() const {
return min_ack_delay_ms_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedMinAckDelayMs() const {
return min_ack_delay_ms_.GetReceivedValue();
}
void QuicConfig::SetAckDelayExponentToSend(uint32_t exponent) {
ack_delay_exponent_.SetSendValue(exponent);
}
uint32_t QuicConfig::GetAckDelayExponentToSend() const {
return ack_delay_exponent_.GetSendValue();
}
bool QuicConfig::HasReceivedAckDelayExponent() const {
return ack_delay_exponent_.HasReceivedValue();
}
uint32_t QuicConfig::ReceivedAckDelayExponent() const {
return ack_delay_exponent_.GetReceivedValue();
}
void QuicConfig::SetMaxPacketSizeToSend(uint64_t max_udp_payload_size) {
max_udp_payload_size_.SetSendValue(max_udp_payload_size);
}
uint64_t QuicConfig::GetMaxPacketSizeToSend() const {
return max_udp_payload_size_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxPacketSize() const {
return max_udp_payload_size_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedMaxPacketSize() const {
return max_udp_payload_size_.GetReceivedValue();
}
void QuicConfig::SetMaxDatagramFrameSizeToSend(
uint64_t max_datagram_frame_size) {
max_datagram_frame_size_.SetSendValue(max_datagram_frame_size);
}
uint64_t QuicConfig::GetMaxDatagramFrameSizeToSend() const {
return max_datagram_frame_size_.GetSendValue();
}
bool QuicConfig::HasReceivedMaxDatagramFrameSize() const {
return max_datagram_frame_size_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedMaxDatagramFrameSize() const {
return max_datagram_frame_size_.GetReceivedValue();
}
void QuicConfig::SetActiveConnectionIdLimitToSend(
uint64_t active_connection_id_limit) {
active_connection_id_limit_.SetSendValue(active_connection_id_limit);
}
uint64_t QuicConfig::GetActiveConnectionIdLimitToSend() const {
return active_connection_id_limit_.GetSendValue();
}
bool QuicConfig::HasReceivedActiveConnectionIdLimit() const {
return active_connection_id_limit_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedActiveConnectionIdLimit() const {
return active_connection_id_limit_.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(uint64_t rtt) {
initial_round_trip_time_us_.SetSendValue(rtt);
}
bool QuicConfig::HasReceivedInitialRoundTripTimeUs() const {
return initial_round_trip_time_us_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedInitialRoundTripTimeUs() const {
return initial_round_trip_time_us_.GetReceivedValue();
}
bool QuicConfig::HasInitialRoundTripTimeUsToSend() const {
return initial_round_trip_time_us_.HasSendValue();
}
uint64_t QuicConfig::GetInitialRoundTripTimeUsToSend() const {
return initial_round_trip_time_us_.GetSendValue();
}
void QuicConfig::SetInitialStreamFlowControlWindowToSend(
uint64_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);
}
uint64_t QuicConfig::GetInitialStreamFlowControlWindowToSend() const {
return initial_stream_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialStreamFlowControlWindowBytes() const {
return initial_stream_flow_control_window_bytes_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedInitialStreamFlowControlWindowBytes() const {
return initial_stream_flow_control_window_bytes_.GetReceivedValue();
}
void QuicConfig::SetInitialMaxStreamDataBytesIncomingBidirectionalToSend(
uint64_t window_bytes) {
initial_max_stream_data_bytes_incoming_bidirectional_.SetSendValue(
window_bytes);
}
uint64_t QuicConfig::GetInitialMaxStreamDataBytesIncomingBidirectionalToSend()
const {
if (initial_max_stream_data_bytes_incoming_bidirectional_.HasSendValue()) {
return initial_max_stream_data_bytes_incoming_bidirectional_.GetSendValue();
}
return initial_stream_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialMaxStreamDataBytesIncomingBidirectional()
const {
return initial_max_stream_data_bytes_incoming_bidirectional_
.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedInitialMaxStreamDataBytesIncomingBidirectional()
const {
return initial_max_stream_data_bytes_incoming_bidirectional_
.GetReceivedValue();
}
void QuicConfig::SetInitialMaxStreamDataBytesOutgoingBidirectionalToSend(
uint64_t window_bytes) {
initial_max_stream_data_bytes_outgoing_bidirectional_.SetSendValue(
window_bytes);
}
uint64_t QuicConfig::GetInitialMaxStreamDataBytesOutgoingBidirectionalToSend()
const {
if (initial_max_stream_data_bytes_outgoing_bidirectional_.HasSendValue()) {
return initial_max_stream_data_bytes_outgoing_bidirectional_.GetSendValue();
}
return initial_stream_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialMaxStreamDataBytesOutgoingBidirectional()
const {
return initial_max_stream_data_bytes_outgoing_bidirectional_
.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedInitialMaxStreamDataBytesOutgoingBidirectional()
const {
return initial_max_stream_data_bytes_outgoing_bidirectional_
.GetReceivedValue();
}
void QuicConfig::SetInitialMaxStreamDataBytesUnidirectionalToSend(
uint64_t window_bytes) {
initial_max_stream_data_bytes_unidirectional_.SetSendValue(window_bytes);
}
uint64_t QuicConfig::GetInitialMaxStreamDataBytesUnidirectionalToSend() const {
if (initial_max_stream_data_bytes_unidirectional_.HasSendValue()) {
return initial_max_stream_data_bytes_unidirectional_.GetSendValue();
}
return initial_stream_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialMaxStreamDataBytesUnidirectional() const {
return initial_max_stream_data_bytes_unidirectional_.HasReceivedValue();
}
uint64_t QuicConfig::ReceivedInitialMaxStreamDataBytesUnidirectional() const {
return initial_max_stream_data_bytes_unidirectional_.GetReceivedValue();
}
void QuicConfig::SetInitialSessionFlowControlWindowToSend(
uint64_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);
}
uint64_t QuicConfig::GetInitialSessionFlowControlWindowToSend() const {
return initial_session_flow_control_window_bytes_.GetSendValue();
}
bool QuicConfig::HasReceivedInitialSessionFlowControlWindowBytes() const {
return initial_session_flow_control_window_bytes_.HasReceivedValue();
}
uint64_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::SetKeyUpdateSupportedLocally() {
key_update_supported_locally_ = true;
}
bool QuicConfig::KeyUpdateSupportedForConnection() const {
return KeyUpdateSupportedRemotely() && KeyUpdateSupportedLocally();
}
bool QuicConfig::KeyUpdateSupportedLocally() const {
return key_update_supported_locally_;
}
bool QuicConfig::KeyUpdateSupportedRemotely() const {
return key_update_supported_remotely_;
}
void QuicConfig::SetIPv6AlternateServerAddressToSend(
const QuicSocketAddress& alternate_server_address_ipv6) {
if (!alternate_server_address_ipv6.host().IsIPv6()) {
QUIC_BUG << "Cannot use SetIPv6AlternateServerAddressToSend with "
<< alternate_server_address_ipv6;
return;
}
alternate_server_address_ipv6_.SetSendValue(alternate_server_address_ipv6);
}
void QuicConfig::SetIPv6AlternateServerAddressToSend(
const QuicSocketAddress& alternate_server_address_ipv6,
const QuicConnectionId& connection_id,
QuicUint128 stateless_reset_token) {
if (!alternate_server_address_ipv6.host().IsIPv6()) {
QUIC_BUG << "Cannot use SetIPv6AlternateServerAddressToSend with "
<< alternate_server_address_ipv6;
return;
}
alternate_server_address_ipv6_.SetSendValue(alternate_server_address_ipv6);
preferred_address_connection_id_and_token_ =
std::make_pair(connection_id, stateless_reset_token);
}
bool QuicConfig::HasReceivedIPv6AlternateServerAddress() const {
return alternate_server_address_ipv6_.HasReceivedValue();
}
const QuicSocketAddress& QuicConfig::ReceivedIPv6AlternateServerAddress()
const {
return alternate_server_address_ipv6_.GetReceivedValue();
}
void QuicConfig::SetIPv4AlternateServerAddressToSend(
const QuicSocketAddress& alternate_server_address_ipv4) {
if (!alternate_server_address_ipv4.host().IsIPv4()) {
QUIC_BUG << "Cannot use SetIPv4AlternateServerAddressToSend with "
<< alternate_server_address_ipv4;
return;
}
alternate_server_address_ipv4_.SetSendValue(alternate_server_address_ipv4);
}
void QuicConfig::SetIPv4AlternateServerAddressToSend(
const QuicSocketAddress& alternate_server_address_ipv4,
const QuicConnectionId& connection_id,
QuicUint128 stateless_reset_token) {
if (!alternate_server_address_ipv4.host().IsIPv4()) {
QUIC_BUG << "Cannot use SetIPv4AlternateServerAddressToSend with "
<< alternate_server_address_ipv4;
return;
}
alternate_server_address_ipv4_.SetSendValue(alternate_server_address_ipv4);
preferred_address_connection_id_and_token_ =
std::make_pair(connection_id, stateless_reset_token);
}
bool QuicConfig::HasReceivedIPv4AlternateServerAddress() const {
return alternate_server_address_ipv4_.HasReceivedValue();
}
const QuicSocketAddress& QuicConfig::ReceivedIPv4AlternateServerAddress()
const {
return alternate_server_address_ipv4_.GetReceivedValue();
}
bool QuicConfig::HasReceivedPreferredAddressConnectionIdAndToken() const {
return (HasReceivedIPv6AlternateServerAddress() ||
HasReceivedIPv4AlternateServerAddress()) &&
preferred_address_connection_id_and_token_.has_value();
}
const std::pair<QuicConnectionId, QuicUint128>&
QuicConfig::ReceivedPreferredAddressConnectionIdAndToken() const {
QUICHE_DCHECK(HasReceivedPreferredAddressConnectionIdAndToken());
return *preferred_address_connection_id_and_token_;
}
void QuicConfig::SetOriginalConnectionIdToSend(
const QuicConnectionId& original_destination_connection_id) {
original_destination_connection_id_to_send_ =
original_destination_connection_id;
}
bool QuicConfig::HasReceivedOriginalConnectionId() const {
return received_original_destination_connection_id_.has_value();
}
QuicConnectionId QuicConfig::ReceivedOriginalConnectionId() const {
if (!HasReceivedOriginalConnectionId()) {
QUIC_BUG << "No received original connection ID";
return EmptyQuicConnectionId();
}
return received_original_destination_connection_id_.value();
}
void QuicConfig::SetInitialSourceConnectionIdToSend(
const QuicConnectionId& initial_source_connection_id) {
initial_source_connection_id_to_send_ = initial_source_connection_id;
}
bool QuicConfig::HasReceivedInitialSourceConnectionId() const {
return received_initial_source_connection_id_.has_value();
}
QuicConnectionId QuicConfig::ReceivedInitialSourceConnectionId() const {
if (!HasReceivedInitialSourceConnectionId()) {
QUIC_BUG << "No received initial source connection ID";
return EmptyQuicConnectionId();
}
return received_initial_source_connection_id_.value();
}
void QuicConfig::SetRetrySourceConnectionIdToSend(
const QuicConnectionId& retry_source_connection_id) {
retry_source_connection_id_to_send_ = retry_source_connection_id;
}
bool QuicConfig::HasReceivedRetrySourceConnectionId() const {
return received_retry_source_connection_id_.has_value();
}
QuicConnectionId QuicConfig::ReceivedRetrySourceConnectionId() const {
if (!HasReceivedRetrySourceConnectionId()) {
QUIC_BUG << "No received retry source connection ID";
return EmptyQuicConnectionId();
}
return received_retry_source_connection_id_.value();
}
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 {
return 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() {
SetIdleNetworkTimeout(QuicTime::Delta::FromSeconds(kMaximumIdleTimeoutSecs));
SetMaxBidirectionalStreamsToSend(kDefaultMaxStreamsPerConnection);
SetMaxUnidirectionalStreamsToSend(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);
SetMaxAckDelayToSendMs(kDefaultDelayedAckTimeMs);
SetAckDelayExponentToSend(kDefaultAckDelayExponent);
SetMaxPacketSizeToSend(kMaxIncomingPacketSize);
SetMaxDatagramFrameSizeToSend(kMaxAcceptedDatagramFrameSize);
}
void QuicConfig::ToHandshakeMessage(
CryptoHandshakeMessage* out,
QuicTransportVersion transport_version) const {
// Idle timeout has custom rules that are different from other values.
// We configure ourselves with the minumum value between the one sent and
// the one received. Additionally, when QUIC_CRYPTO is used, the server
// MUST send an idle timeout no greater than the idle timeout it received
// from the client. We therefore send the received value if it is lower.
QuicFixedUint32 max_idle_timeout_seconds(kICSL, PRESENCE_REQUIRED);
uint32_t max_idle_timeout_to_send_seconds =
max_idle_timeout_to_send_.ToSeconds();
if (received_max_idle_timeout_.has_value() &&
received_max_idle_timeout_->ToSeconds() <
max_idle_timeout_to_send_seconds) {
max_idle_timeout_to_send_seconds = received_max_idle_timeout_->ToSeconds();
}
max_idle_timeout_seconds.SetSendValue(max_idle_timeout_to_send_seconds);
max_idle_timeout_seconds.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.
max_bidirectional_streams_.ToHandshakeMessage(out);
if (VersionHasIetfQuicFrames(transport_version)) {
max_unidirectional_streams_.ToHandshakeMessage(out);
ack_delay_exponent_.ToHandshakeMessage(out);
}
if (max_ack_delay_ms_.GetSendValue() != kDefaultDelayedAckTimeMs) {
// Only send max ack delay if it is using a non-default value, because
// the default value is used by QuicSentPacketManager if it is not
// sent during the handshake, and we want to save bytes.
max_ack_delay_ms_.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);
if (alternate_server_address_ipv6_.HasSendValue()) {
alternate_server_address_ipv6_.ToHandshakeMessage(out);
} else {
alternate_server_address_ipv4_.ToHandshakeMessage(out);
}
stateless_reset_token_.ToHandshakeMessage(out);
}
QuicErrorCode QuicConfig::ProcessPeerHello(
const CryptoHandshakeMessage& peer_hello,
HelloType hello_type,
std::string* error_details) {
QUICHE_DCHECK(error_details != nullptr);
QuicErrorCode error = QUIC_NO_ERROR;
if (error == QUIC_NO_ERROR) {
// Idle timeout has custom rules that are different from other values.
// We configure ourselves with the minumum value between the one sent and
// the one received. Additionally, when QUIC_CRYPTO is used, the server
// MUST send an idle timeout no greater than the idle timeout it received
// from the client.
QuicFixedUint32 max_idle_timeout_seconds(kICSL, PRESENCE_REQUIRED);
error = max_idle_timeout_seconds.ProcessPeerHello(peer_hello, hello_type,
error_details);
if (error == QUIC_NO_ERROR) {
if (max_idle_timeout_seconds.GetReceivedValue() >
max_idle_timeout_to_send_.ToSeconds()) {
// The received value is higher than ours, ignore it if from the client
// and raise an error if from the server.
if (hello_type == SERVER) {
error = QUIC_INVALID_NEGOTIATED_VALUE;
*error_details =
"Invalid value received for " + QuicTagToString(kICSL);
}
} else {
received_max_idle_timeout_ = QuicTime::Delta::FromSeconds(
max_idle_timeout_seconds.GetReceivedValue());
}
}
}
if (error == QUIC_NO_ERROR) {
error = max_bidirectional_streams_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = max_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) {
QuicFixedSocketAddress alternate_server_address(kASAD, PRESENCE_OPTIONAL);
error = alternate_server_address.ProcessPeerHello(peer_hello, hello_type,
error_details);
if (error == QUIC_NO_ERROR && alternate_server_address.HasReceivedValue()) {
const QuicSocketAddress& received_address =
alternate_server_address.GetReceivedValue();
if (received_address.host().IsIPv6()) {
alternate_server_address_ipv6_.SetReceivedValue(received_address);
} else if (received_address.host().IsIPv4()) {
alternate_server_address_ipv4_.SetReceivedValue(received_address);
}
}
}
if (error == QUIC_NO_ERROR) {
error = stateless_reset_token_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = max_ack_delay_ms_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
error = ack_delay_exponent_.ProcessPeerHello(peer_hello, hello_type,
error_details);
}
if (error == QUIC_NO_ERROR) {
negotiated_ = true;
}
return error;
}
bool QuicConfig::FillTransportParameters(TransportParameters* params) const {
if (original_destination_connection_id_to_send_.has_value()) {
params->original_destination_connection_id =
original_destination_connection_id_to_send_.value();
}
params->max_idle_timeout_ms.set_value(
max_idle_timeout_to_send_.ToMilliseconds());
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_udp_payload_size.set_value(GetMaxPacketSizeToSend());
params->max_datagram_frame_size.set_value(GetMaxDatagramFrameSizeToSend());
params->initial_max_data.set_value(
GetInitialSessionFlowControlWindowToSend());
// The max stream data bidirectional transport parameters can be either local
// or remote. A stream is local iff it is initiated by the endpoint that sent
// the transport parameter (see the Transport Parameter Definitions section of
// draft-ietf-quic-transport). In this function we are sending transport
// parameters, so a local stream is one we initiated, which means an outgoing
// stream.
params->initial_max_stream_data_bidi_local.set_value(
GetInitialMaxStreamDataBytesOutgoingBidirectionalToSend());
params->initial_max_stream_data_bidi_remote.set_value(
GetInitialMaxStreamDataBytesIncomingBidirectionalToSend());
params->initial_max_stream_data_uni.set_value(
GetInitialMaxStreamDataBytesUnidirectionalToSend());
params->initial_max_streams_bidi.set_value(
GetMaxBidirectionalStreamsToSend());
params->initial_max_streams_uni.set_value(
GetMaxUnidirectionalStreamsToSend());
params->max_ack_delay.set_value(GetMaxAckDelayToSendMs());
if (min_ack_delay_ms_.HasSendValue()) {
params->min_ack_delay_us.set_value(min_ack_delay_ms_.GetSendValue() *
kNumMicrosPerMilli);
}
params->ack_delay_exponent.set_value(GetAckDelayExponentToSend());
params->disable_active_migration =
connection_migration_disabled_.HasSendValue() &&
connection_migration_disabled_.GetSendValue() != 0;
if (alternate_server_address_ipv6_.HasSendValue() ||
alternate_server_address_ipv4_.HasSendValue()) {
TransportParameters::PreferredAddress preferred_address;
if (alternate_server_address_ipv6_.HasSendValue()) {
preferred_address.ipv6_socket_address =
alternate_server_address_ipv6_.GetSendValue();
}
if (alternate_server_address_ipv4_.HasSendValue()) {
preferred_address.ipv4_socket_address =
alternate_server_address_ipv4_.GetSendValue();
}
if (preferred_address_connection_id_and_token_) {
preferred_address.connection_id =
preferred_address_connection_id_and_token_->first;
auto* begin = reinterpret_cast<const char*>(
&preferred_address_connection_id_and_token_->second);
auto* end =
begin + sizeof(preferred_address_connection_id_and_token_->second);
preferred_address.stateless_reset_token.assign(begin, end);
}
params->preferred_address =
std::make_unique<TransportParameters::PreferredAddress>(
preferred_address);
}
if (active_connection_id_limit_.HasSendValue()) {
params->active_connection_id_limit.set_value(
active_connection_id_limit_.GetSendValue());
}
if (initial_source_connection_id_to_send_.has_value()) {
params->initial_source_connection_id =
initial_source_connection_id_to_send_.value();
}
if (retry_source_connection_id_to_send_.has_value()) {
params->retry_source_connection_id =
retry_source_connection_id_to_send_.value();
}
if (initial_round_trip_time_us_.HasSendValue()) {
params->initial_round_trip_time_us.set_value(
initial_round_trip_time_us_.GetSendValue());
}
if (connection_options_.HasSendValues() &&
!connection_options_.GetSendValues().empty()) {
params->google_connection_options = connection_options_.GetSendValues();
}
if (!KeyUpdateSupportedLocally()) {
params->key_update_not_yet_supported = true;
}
params->custom_parameters = custom_transport_parameters_to_send_;
return true;
}
QuicErrorCode QuicConfig::ProcessTransportParameters(
const TransportParameters& params,
bool is_resumption,
std::string* error_details) {
if (!is_resumption && params.original_destination_connection_id.has_value()) {
received_original_destination_connection_id_ =
params.original_destination_connection_id.value();
}
if (params.max_idle_timeout_ms.value() > 0 &&
params.max_idle_timeout_ms.value() <
static_cast<uint64_t>(max_idle_timeout_to_send_.ToMilliseconds())) {
// An idle timeout of zero indicates it is disabled.
// We also ignore values higher than ours which will cause us to use the
// smallest value between ours and our peer's.
received_max_idle_timeout_ =
QuicTime::Delta::FromMilliseconds(params.max_idle_timeout_ms.value());
}
if (!is_resumption && !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_udp_payload_size.IsValid()) {
max_udp_payload_size_.SetReceivedValue(params.max_udp_payload_size.value());
}
if (params.max_datagram_frame_size.IsValid()) {
max_datagram_frame_size_.SetReceivedValue(
params.max_datagram_frame_size.value());
}
initial_session_flow_control_window_bytes_.SetReceivedValue(
params.initial_max_data.value());
// IETF QUIC specifies stream IDs and stream counts as 62-bit integers but
// our implementation uses uint32_t to represent them to save memory.
max_bidirectional_streams_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_streams_bidi.value(),
std::numeric_limits<uint32_t>::max()));
max_unidirectional_streams_.SetReceivedValue(
std::min<uint64_t>(params.initial_max_streams_uni.value(),
std::numeric_limits<uint32_t>::max()));
// The max stream data bidirectional transport parameters can be either local
// or remote. A stream is local iff it is initiated by the endpoint that sent
// the transport parameter (see the Transport Parameter Definitions section of
// draft-ietf-quic-transport). However in this function we are processing
// received transport parameters, so a local stream is one initiated by our
// peer, which means an incoming stream.
initial_max_stream_data_bytes_incoming_bidirectional_.SetReceivedValue(
params.initial_max_stream_data_bidi_local.value());
initial_max_stream_data_bytes_outgoing_bidirectional_.SetReceivedValue(
params.initial_max_stream_data_bidi_remote.value());
initial_max_stream_data_bytes_unidirectional_.SetReceivedValue(
params.initial_max_stream_data_uni.value());
if (!is_resumption) {
max_ack_delay_ms_.SetReceivedValue(params.max_ack_delay.value());
if (params.ack_delay_exponent.IsValid()) {
ack_delay_exponent_.SetReceivedValue(params.ack_delay_exponent.value());
}
if (params.preferred_address != nullptr) {
if (params.preferred_address->ipv6_socket_address.port() != 0) {
alternate_server_address_ipv6_.SetReceivedValue(
params.preferred_address->ipv6_socket_address);
}
if (params.preferred_address->ipv4_socket_address.port() != 0) {
alternate_server_address_ipv4_.SetReceivedValue(
params.preferred_address->ipv4_socket_address);
}
// TODO(haoyuewang) Treat 0 length connection ID sent in preferred_address
// as a connection error of type TRANSPORT_PARAMETER_ERROR when server
// fully supports it.
if (!params.preferred_address->connection_id.IsEmpty()) {
preferred_address_connection_id_and_token_ = std::make_pair(
params.preferred_address->connection_id,
*reinterpret_cast<const QuicUint128*>(
&params.preferred_address->stateless_reset_token.front()));
}
}
if (params.min_ack_delay_us.value() != 0) {
if (params.min_ack_delay_us.value() >
params.max_ack_delay.value() * kNumMicrosPerMilli) {
*error_details = "MinAckDelay is greater than MaxAckDelay.";
return IETF_QUIC_PROTOCOL_VIOLATION;
}
min_ack_delay_ms_.SetReceivedValue(params.min_ack_delay_us.value() /
kNumMicrosPerMilli);
}
}
if (params.disable_active_migration) {
connection_migration_disabled_.SetReceivedValue(1u);
}
if (!is_resumption && !params.key_update_not_yet_supported) {
key_update_supported_remotely_ = true;
}
active_connection_id_limit_.SetReceivedValue(
params.active_connection_id_limit.value());
if (!is_resumption) {
if (params.initial_source_connection_id.has_value()) {
received_initial_source_connection_id_ =
params.initial_source_connection_id.value();
}
if (params.retry_source_connection_id.has_value()) {
received_retry_source_connection_id_ =
params.retry_source_connection_id.value();
}
}
if (params.initial_round_trip_time_us.value() > 0) {
initial_round_trip_time_us_.SetReceivedValue(
params.initial_round_trip_time_us.value());
}
if (params.google_connection_options.has_value()) {
connection_options_.SetReceivedValues(
params.google_connection_options.value());
}
received_custom_transport_parameters_ = params.custom_parameters;
if (!is_resumption) {
negotiated_ = true;
}
*error_details = "";
return QUIC_NO_ERROR;
}
} // namespace quic