Discovering local interfaces and default gateways

1// Copyright (c) 2024-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or https://www.opensource.org/licenses/mit-license.php.
4
5#ifndef BITCOIN_COMMON_NETIF_H
6#define BITCOIN_COMMON_NETIF_H
7
8#include <netaddress.h>
9
10#include <optional>
11#include <vector>
12
13//! Query the OS for the default gateway for `network`. This only makes sense for NET_IPV4 and NET_IPV6.
14//! Returns std::nullopt if it cannot be found, or there is no support for this OS.
15std::optional<CNetAddr> QueryDefaultGateway(Network network);
16
17//! Return all local non-loopback IPv4 and IPv6 network addresses.
18std::vector<CNetAddr> GetLocalAddresses();
19
20#endif // BITCOIN_COMMON_NETIF_H
21