Paul Schneider
cc28ee8b29
Reuse existing ChatHub consent and Podcast LibVLC capture for direct bidirectional H.264/AAC media, with embedded call controls and cleanup. Require HTTPS key exchange and reject IP-masking policies for this opt-in LAN/VPN transport. Add native SRTP, signaling and lifecycle tests; document setup and remaining physical-device validation. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
61 lines
2.2 KiB
C#
61 lines
2.2 KiB
C#
#nullable enable
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namespace Yavsc.Abstract.Chat.Calls;
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public static class CallHubMethods
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{
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public const string Invite = "InviteCall";
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public const string InviteLan = "InviteLanCall";
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public const string Accept = "AcceptCall";
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public const string End = "EndCall";
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public const string Signal = "SendCallSignal";
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public const string Invitation = "CallInvitation";
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public const string Accepted = "CallAccepted";
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public const string Ended = "CallEnded";
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public const string SignalReceived = "CallSignal";
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}
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public sealed record CallSession(
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Guid Id, string RoomName, string Caller, string Callee, bool RelayOnly,
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DateTimeOffset ExpiresAt, string Transport = CallTransports.WebRtc);
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public static class CallTransports
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{
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public const string WebRtc = "webrtc";
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public const string LanSrtp = "lan-srtp";
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}
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public sealed record CallIceServer(string[] Urls, string? Username = null, string? Credential = null);
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public sealed record CallAccepted(CallSession Session, CallIceServer[] IceServers);
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public sealed record CallEnded(Guid CallId, string Reason);
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public sealed record CallSignal(
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string Kind, string? Sdp = null, string? Candidate = null,
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string? SdpMid = null, int? SdpMLineIndex = null, LanCallEndpoint? Endpoint = null);
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public sealed record LanCallEndpoint(string Address, int Port, string Key, string Salt)
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{
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public override string ToString() => "SRTP endpoint (credentials redacted)";
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public bool IsValid() =>
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LanCallNetwork.IsPrivateIPv4(Address) && Port is >= 1024 and <= 65534 && Port % 2 == 0 &&
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Key is { Length: 32 } && Key.All(Uri.IsHexDigit) &&
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Salt is { Length: 28 } && Salt.All(Uri.IsHexDigit);
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}
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public static class LanCallNetwork
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{
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public static bool IsPrivateIPv4(string address)
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{
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if (!System.Net.IPAddress.TryParse(address, out var ip) ||
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ip.AddressFamily != System.Net.Sockets.AddressFamily.InterNetwork ||
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ip.ToString() != address)
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return false;
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var bytes = ip.GetAddressBytes();
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return bytes[0] == 10 || bytes[0] == 127 ||
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(bytes[0] == 172 && bytes[1] is >= 16 and <= 31) ||
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(bytes[0] == 192 && bytes[1] == 168);
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}
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}
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