mirror of
https://github.com/DorkSquadRR/DorkNet.git
synced 2026-10-26 07:28:45 -07:00
Alexa
65ca509fa8
- RecRoomPicker.Detect: scan common manual-install paths (Documents/Recnet/dist, Downloads, C:\Games, etc.) on first run; never touches Steam libraries per policy - RecRoomVersionDetector: three-signal cascade (version.txt -> PE timestamp -> file size) maps install to a manifest branch so version dropdown defaults correctly - CloudflaredInstaller: download latest cloudflared-windows-amd64.exe from GitHub releases to %LOCALAPPDATA%\DorkNet on first host; resolves side-by-side -> cache -> PATH -> download - LocalNetwork.GetLanIp + AppState.HostingMode (Internet|LocalNetwork) + Host view "WHO CAN JOIN?" radio: LAN-only mode skips Cloudflare entirely for families on one network - OnHostStart branches on HostingMode; status text reflects local IP vs public tunnel URL
64 lines
2.6 KiB
C#
64 lines
2.6 KiB
C#
using System.Net;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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namespace DorkNet.Launcher.Backend;
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/// <summary>Finds the machine's preferred LAN IPv4 address for
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/// "local network" hosting mode. Skip Cloudflare entirely, hand
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/// out the LAN IP in the join code, and players on the same network
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/// connect direct.
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///
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/// <para>Selection priority: an "Up" non-loopback network interface
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/// with a private (RFC1918) IPv4 address. Falls back to 127.0.0.1
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/// if nothing usable is found — works for solo testing on one
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/// machine but joiners need either a real LAN address or
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/// Cloudflare mode.</para></summary>
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public static class LocalNetwork
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{
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public static string GetLanIp()
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{
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try
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{
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// Preferred path: walk active NICs, pick the first IPv4 in
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// RFC1918 ranges on an interface that's up + not virtual.
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// This handles multi-NIC machines (Ethernet + WiFi + VPN +
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// Hyper-V vSwitches) by preferring physical adapters.
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var candidates = NetworkInterface.GetAllNetworkInterfaces()
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.Where(n => n.OperationalStatus == OperationalStatus.Up)
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.Where(n => n.NetworkInterfaceType != NetworkInterfaceType.Loopback)
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.Where(n => n.NetworkInterfaceType != NetworkInterfaceType.Tunnel)
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.SelectMany(n => n.GetIPProperties().UnicastAddresses)
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.Where(a => a.Address.AddressFamily == AddressFamily.InterNetwork)
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.Select(a => a.Address)
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.ToList();
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// Prefer private-range addresses (the joiners' subnet) over
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// public-routable ones (which suggest a server with a
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// direct WAN IP — unusual for grandma's PC).
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var privateAddr = candidates.FirstOrDefault(IsPrivate);
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if (privateAddr is not null) return privateAddr.ToString();
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// Fall back to the first non-loopback address of any kind.
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var anyAddr = candidates.FirstOrDefault(a => !IPAddress.IsLoopback(a));
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if (anyAddr is not null) return anyAddr.ToString();
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}
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catch { /* fall through to loopback */ }
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return "127.0.0.1";
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}
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private static bool IsPrivate(IPAddress ip)
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{
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var b = ip.GetAddressBytes();
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if (b.Length != 4) return false;
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return b[0] switch
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{
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10 => true, // 10.0.0.0/8
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172 when b[1] >= 16 && b[1] <= 31 => true, // 172.16.0.0/12
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192 when b[1] == 168 => true, // 192.168.0.0/16
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_ => false,
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};
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}
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}
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