address.h

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#pragma once
 
#include "util/rats_export.h"
#include "core/ip_address.h"
 
#include <cstdint>
#include <functional>
#include <optional>
#include <string>
#include <string_view>
 
namespace librats {
 
struct RATS_API Address {
    IpAddress ip;
    uint16_t  port = 0;
 
    Address() = default;
    Address(IpAddress ip, uint16_t port) : ip(ip), port(port) {}
 
    Address(std::string_view numeric_ip, uint16_t port);
 
    static std::optional<Address> parse(std::string_view text);
 
    std::string to_string() const;
 
    bool is_valid() const noexcept { return !ip.is_unspecified() && port != 0; }
 
    bool operator==(const Address& o) const noexcept { return port == o.port && ip == o.ip; }
    bool operator!=(const Address& o) const noexcept { return !(*this == o); }
    bool operator<(const Address& o) const noexcept {
        return ip != o.ip ? ip < o.ip : port < o.port;
    }
};
 
} // namespace librats
 
namespace std {
template <>
struct hash<librats::Address> {
    std::size_t operator()(const librats::Address& a) const noexcept {
        // Fold the port into the ip hash (FNV-style) — no temporary string.
        std::size_t h = a.ip.hash();
        h ^= (static_cast<std::size_t>(a.port) + 0x9e3779b97f4a7c15ull + (h << 6) + (h >> 2));
        return h;
    }
};
} // namespace std