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transportparams.cc
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#if HAVE_OPENSSL && NODE_OPENSSL_HAS_QUIC
#include "transportparams.h"
#include <env-inl.h>
#include <memory_tracker-inl.h>
#include <node_sockaddr-inl.h>
#include <util-inl.h>
#include <v8.h>
#include "bindingdata.h"
#include "defs.h"
#include "endpoint.h"
#include "session.h"
#include "tokens.h"
namespace node {
using v8::ArrayBuffer;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::Nothing;
using v8::Object;
using v8::Value;
namespace quic {
const TransportParams::Options TransportParams::Options::kDefault = {};
TransportParams::Config::Config(Side side,
const CID& ocid,
const CID& retry_scid)
: side(side), ocid(ocid), retry_scid(retry_scid) {}
Maybe<TransportParams::Options> TransportParams::Options::From(
Environment* env, Local<Value> value) {
if (value.IsEmpty()) {
THROW_ERR_INVALID_ARG_TYPE(env, "options must be an object");
return Nothing<Options>();
}
Options options;
auto& state = BindingData::Get(env);
if (value->IsUndefined()) {
return Just<Options>(options);
}
if (!value->IsObject()) {
THROW_ERR_INVALID_ARG_TYPE(env, "options must be an object");
return Nothing<Options>();
}
auto params = value.As<Object>();
#define SET(name) \
SetOption<TransportParams::Options, &TransportParams::Options::name>( \
env, &options, params, state.name##_string())
if (!SET(initial_max_stream_data_bidi_local) ||
!SET(initial_max_stream_data_bidi_remote) ||
!SET(initial_max_stream_data_uni) || !SET(initial_max_data) ||
!SET(initial_max_streams_bidi) || !SET(initial_max_streams_uni) ||
!SET(max_idle_timeout) || !SET(active_connection_id_limit) ||
!SET(ack_delay_exponent) || !SET(max_ack_delay) ||
!SET(max_datagram_frame_size)) {
return Nothing<Options>();
}
#undef SET
return Just<Options>(options);
}
std::string TransportParams::Options::ToString() const {
DebugIndentScope indent;
auto prefix = indent.Prefix();
std::string res("{");
res += prefix + "version: " + std::to_string(transportParamsVersion);
if (preferred_address_ipv4.has_value()) {
res += prefix + "preferred_address_ipv4: " +
preferred_address_ipv4.value().ToString();
} else {
res += prefix + "preferred_address_ipv4: <none>";
}
if (preferred_address_ipv6.has_value()) {
res += prefix + "preferred_address_ipv6: " +
preferred_address_ipv6.value().ToString();
} else {
res += prefix + "preferred_address_ipv6: <none>";
}
res += prefix + "initial max stream data bidi local: " +
std::to_string(initial_max_stream_data_bidi_local);
res += prefix + "initial max stream data bidi remote: " +
std::to_string(initial_max_stream_data_bidi_remote);
res += prefix + "initial max stream data uni: " +
std::to_string(initial_max_stream_data_uni);
res += prefix + "tinitial max data: " + std::to_string(initial_max_data);
res += prefix + "initial max streams bidi: " +
std::to_string(initial_max_streams_bidi);
res += prefix +
"initial max streams uni: " + std::to_string(initial_max_streams_uni);
res += prefix + "max idle timeout: " + std::to_string(max_idle_timeout);
res += prefix + "active connection id limit: " +
std::to_string(active_connection_id_limit);
res += prefix + "ack delay exponent: " + std::to_string(ack_delay_exponent);
res += prefix + "max ack delay: " + std::to_string(max_ack_delay);
res += prefix +
"max datagram frame size: " + std::to_string(max_datagram_frame_size);
res += prefix + "disable active migration: " +
(disable_active_migration ? std::string("yes") : std::string("no"));
res += indent.Close();
return res;
}
void TransportParams::Options::MemoryInfo(MemoryTracker* tracker) const {
if (preferred_address_ipv4.has_value()) {
tracker->TrackField("preferred_address_ipv4",
preferred_address_ipv4.value());
}
if (preferred_address_ipv6.has_value()) {
tracker->TrackField("preferred_address_ipv6",
preferred_address_ipv6.value());
}
}
TransportParams::TransportParams() : ptr_(¶ms_) {}
TransportParams::TransportParams(const ngtcp2_transport_params* ptr)
: ptr_(ptr) {}
TransportParams::TransportParams(const Config& config, const Options& options)
: TransportParams() {
ngtcp2_transport_params_default(¶ms_);
params_.active_connection_id_limit = options.active_connection_id_limit;
params_.initial_max_stream_data_bidi_local =
options.initial_max_stream_data_bidi_local;
params_.initial_max_stream_data_bidi_remote =
options.initial_max_stream_data_bidi_remote;
params_.initial_max_stream_data_uni = options.initial_max_stream_data_uni;
params_.initial_max_streams_bidi = options.initial_max_streams_bidi;
params_.initial_max_streams_uni = options.initial_max_streams_uni;
params_.initial_max_data = options.initial_max_data;
params_.max_idle_timeout = options.max_idle_timeout * NGTCP2_SECONDS;
params_.max_ack_delay = options.max_ack_delay;
params_.ack_delay_exponent = options.ack_delay_exponent;
params_.max_datagram_frame_size = options.max_datagram_frame_size;
params_.disable_active_migration = options.disable_active_migration ? 1 : 0;
params_.preferred_addr_present = 0;
params_.stateless_reset_token_present = 0;
params_.retry_scid_present = 0;
if (config.side == Side::SERVER) {
// For the server side, the original dcid is always set.
CHECK(config.ocid);
params_.original_dcid = config.ocid;
params_.original_dcid_present = 1;
// The retry_scid is only set if the server validated a retry token.
if (config.retry_scid) {
params_.retry_scid = config.retry_scid;
params_.retry_scid_present = 1;
}
}
if (options.preferred_address_ipv4.has_value())
SetPreferredAddress(options.preferred_address_ipv4.value());
if (options.preferred_address_ipv6.has_value())
SetPreferredAddress(options.preferred_address_ipv6.value());
}
TransportParams::TransportParams(const ngtcp2_vec& vec, int version)
: TransportParams() {
int ret = ngtcp2_transport_params_decode_versioned(
version, ¶ms_, vec.base, vec.len);
if (ret != 0) {
ptr_ = nullptr;
error_ = QuicError::ForNgtcp2Error(ret);
}
}
Store TransportParams::Encode(Environment* env, int version) const {
if (ptr_ == nullptr) {
return Store();
}
// Preflight to see how much storage we'll need.
ssize_t size =
ngtcp2_transport_params_encode_versioned(nullptr, 0, version, ¶ms_);
if (size == 0) {
return Store();
}
auto result = ArrayBuffer::NewBackingStore(
env->isolate(), size, v8::BackingStoreInitializationMode::kUninitialized);
auto ret = ngtcp2_transport_params_encode_versioned(
static_cast<uint8_t*>(result->Data()), size, version, ¶ms_);
if (ret != 0) {
return Store();
}
return Store(std::move(result), static_cast<size_t>(size));
}
void TransportParams::SetPreferredAddress(const SocketAddress& address) {
DCHECK(ptr_ == ¶ms_);
params_.preferred_addr_present = 1;
switch (address.family()) {
case AF_INET: {
const sockaddr_in* src =
reinterpret_cast<const sockaddr_in*>(address.data());
memcpy(¶ms_.preferred_addr.ipv4.sin_addr,
&src->sin_addr,
sizeof(params_.preferred_addr.ipv4.sin_addr));
params_.preferred_addr.ipv4.sin_port = address.port();
return;
}
case AF_INET6: {
const sockaddr_in6* src =
reinterpret_cast<const sockaddr_in6*>(address.data());
memcpy(¶ms_.preferred_addr.ipv6.sin6_addr,
&src->sin6_addr,
sizeof(params_.preferred_addr.ipv6.sin6_addr));
params_.preferred_addr.ipv6.sin6_port = address.port();
return;
}
}
UNREACHABLE();
}
void TransportParams::GenerateSessionTokens(Session* session) {
if (session->is_server()) {
GenerateStatelessResetToken(session->endpoint(), session->config().scid);
GeneratePreferredAddressToken(session);
}
}
void TransportParams::GenerateStatelessResetToken(const Endpoint& endpoint,
const CID& cid) {
DCHECK(ptr_ == ¶ms_);
DCHECK(cid);
params_.stateless_reset_token_present = 1;
endpoint.GenerateNewStatelessResetToken(params_.stateless_reset_token, cid);
}
void TransportParams::GeneratePreferredAddressToken(Session* session) {
DCHECK(ptr_ == ¶ms_);
Session::Config& config = session->config();
if (params_.preferred_addr_present) {
config.preferred_address_cid = session->new_cid();
params_.preferred_addr.cid = config.preferred_address_cid;
auto& endpoint = session->endpoint();
endpoint.AssociateStatelessResetToken(
endpoint.GenerateNewStatelessResetToken(
params_.preferred_addr.stateless_reset_token,
config.preferred_address_cid),
session);
}
}
TransportParams::operator const ngtcp2_transport_params&() const {
DCHECK_NOT_NULL(ptr_);
return *ptr_;
}
TransportParams::operator const ngtcp2_transport_params*() const {
DCHECK_NOT_NULL(ptr_);
return ptr_;
}
TransportParams::operator bool() const {
return ptr_ != nullptr;
}
const QuicError& TransportParams::error() const {
return error_;
}
void TransportParams::Initialize(Environment* env, Local<Object> target) {
NODE_DEFINE_CONSTANT(target, DEFAULT_MAX_STREAM_DATA);
NODE_DEFINE_CONSTANT(target, DEFAULT_MAX_DATA);
NODE_DEFINE_CONSTANT(target, DEFAULT_MAX_IDLE_TIMEOUT);
NODE_DEFINE_CONSTANT(target, DEFAULT_MAX_STREAMS_BIDI);
NODE_DEFINE_CONSTANT(target, DEFAULT_MAX_STREAMS_UNI);
NODE_DEFINE_CONSTANT(target, DEFAULT_ACTIVE_CONNECTION_ID_LIMIT);
}
} // namespace quic
} // namespace node
#endif // HAVE_OPENSSL && NODE_OPENSSL_HAS_QUIC