/// <summary>
/// Handles the event when a client times out. Disconnects the UDP client and cleans up any references
/// to the client.
/// </summary>
/// <param name="client">The client that timed out.</param>
private void HandleClientTimeout(NetServerClient client)
{
var id = client.Id;
// Only execute the client timeout callback if the client is registered and thus has an ID
if (client.IsRegistered)
{
ClientTimeoutEvent?.Invoke(id);
}
client.Disconnect();
_registeredClients.Remove(id);
_clients.Remove(client);
Logger.Get().Info(this, $"Client {id} timed out");
}
/// <summary>
/// Handle a list of packets from an unregistered client.
/// </summary>
/// <param name="client">The unregistered client.</param>
/// <param name="packets">The list of packets to handle.</param>
private void HandlePacketsUnregisteredClient(NetServerClient client, List <Packet.Packet> packets)
{
for (var i = 0; i < packets.Count; i++)
{
var packet = packets[i];
// Create a server update packet from the raw packet instance
var serverUpdatePacket = new ServerUpdatePacket(packet);
if (!serverUpdatePacket.ReadPacket())
{
// If ReadPacket returns false, we received a malformed packet, which we simply ignore for now
// Logger.Get().Warn(this, "Received malformed packet, ignoring");
continue;
}
client.UpdateManager.OnReceivePacket <ServerUpdatePacket, ServerPacketId>(serverUpdatePacket);
if (!serverUpdatePacket.GetPacketData().TryGetValue(
ServerPacketId.LoginRequest,
out var packetData
))
{
continue;
}
var loginRequest = (LoginRequest)packetData;
Logger.Get().Info(this, $"Received login request from '{loginRequest.Username}'");
// Invoke the handler of the login request and decide what to do with the client based on the result
var allowClient = LoginRequestEvent?.Invoke(
client.Id,
client.EndPoint,
loginRequest,
client.UpdateManager
);
if (!allowClient.HasValue)
{
Logger.Get().Error(this, "Login request has no handler");
return;
}
if (allowClient.Value)
{
// Logger.Get().Info(this, $"Login request from '{loginRequest.Username}' approved");
// client.UpdateManager.SetLoginResponseData(LoginResponseStatus.Success);
// Register the client and add them to the dictionary
client.IsRegistered = true;
_registeredClients[client.Id] = client;
// Now that the client is registered, we forward the rest of the packets to the other handler
var leftoverPackets = packets.GetRange(
i + 1,
packets.Count - i - 1
);
HandlePacketsRegisteredClient(client, leftoverPackets);
}
else
{
client.Disconnect();
_clients.Remove(client);
}
break;
}
}
