Current File : /home/vacivi36/vittasync.vacivitta.com.br/vittasync/node/src/quic/preferredaddress.h
#pragma once
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#if HAVE_OPENSSL && NODE_OPENSSL_HAS_QUIC
#include <env.h>
#include <ngtcp2/ngtcp2.h>
#include <node_internals.h>
#include <v8.h>
#include <string>
namespace node {
namespace quic {
// PreferredAddress is a helper class used only when a client Session receives
// an advertised preferred address from a server. The helper provides
// information about the server advertised preferred address and allows
// the preferred address to be selected.
class PreferredAddress final {
public:
enum class Policy {
// Ignore the server-advertised preferred address.
IGNORE_PREFERRED_ADDRESS,
// Use the server-advertised preferred address.
USE_PREFERRED_ADDRESS,
};
static v8::Maybe<Policy> tryGetPolicy(Environment* env,
v8::Local<v8::Value> value);
// The QUIC_* constants are expected to be exported out to be used on
// the JavaScript side of the API.
static constexpr uint32_t QUIC_PREFERRED_ADDRESS_USE =
static_cast<uint32_t>(Policy::USE_PREFERRED_ADDRESS);
static constexpr uint32_t QUIC_PREFERRED_ADDRESS_IGNORE =
static_cast<uint32_t>(Policy::IGNORE_PREFERRED_ADDRESS);
static constexpr uint32_t DEFAULT_PREFERRED_ADDRESS_POLICY =
static_cast<uint32_t>(Policy::USE_PREFERRED_ADDRESS);
static void Initialize(Environment* env, v8::Local<v8::Object> target);
static v8::Maybe<Policy> GetPolicy(Environment* env,
v8::Local<v8::Value> value);
struct AddressInfo final {
char host[NI_MAXHOST];
int family;
uint16_t port;
std::string_view address;
};
explicit PreferredAddress(ngtcp2_path* dest,
const ngtcp2_preferred_addr* paddr);
PreferredAddress(const PreferredAddress&) = delete;
PreferredAddress(PreferredAddress&&) = delete;
PreferredAddress& operator=(const PreferredAddress&) = delete;
PreferredAddress& operator=(PreferredAddress&&) = delete;
void Use(const AddressInfo& address);
std::optional<const AddressInfo> ipv4() const;
std::optional<const AddressInfo> ipv6() const;
// Set the preferred address in the transport params.
// The address family (ipv4 or ipv6) will be automatically
// detected from the given addr. Any other address family
// will be ignored.
static void Set(ngtcp2_transport_params* params, const sockaddr* addr);
private:
ngtcp2_path* dest_;
const ngtcp2_preferred_addr* paddr_;
};
} // namespace quic
} // namespace node
#endif // HAVE_OPENSSL && NODE_OPENSSL_HAS_QUIC
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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