private void OnClose(SockChatConnection conn)
{
Logger.Debug($@"[{conn}] Connection closed");
Connections.RemoveConnection(conn);
Context.Sessions.Destroy(conn);
Context.RateLimiter.ClearConnection(conn);
}
private void OnMessage(SockChatConnection conn, string msg)
{
bool hasSession = conn.Session != null;
RateLimitState rateLimit = RateLimitState.None;
if (!hasSession || !Context.RateLimiter.HasRankException(conn.Session.User))
{
rateLimit = Context.RateLimiter.BumpConnection(conn);
}
Logger.Debug($@"[{conn}] {rateLimit}");
if (!hasSession && rateLimit == RateLimitState.Drop)
{
conn.Close();
return;
}
IEnumerable <string> args = msg.Split(IServerPacket.SEPARATOR);
if (!Enum.TryParse(args.ElementAtOrDefault(0), out ClientPacketId packetId))
{
return;
}
if (packetId != ClientPacketId.Authenticate)
{
if (!hasSession)
{
return;
}
if (rateLimit == RateLimitState.Drop)
{
Context.BanUser(conn.Session.User, Context.RateLimiter.BanDuration, UserDisconnectReason.Flood);
return;
} /*else if(rateLimit == RateLimitState.Warn)
* sess.SendPacket(new FloodWarningPacket(Context.Bot));*/
}
if (PacketHandlers.TryGetValue(packetId, out IPacketHandler handler))
{
handler.HandlePacket(new PacketHandlerContext(args, conn));
}
}
public void Listen(EndPoint endPoint)
{
if (Server != null)
{
throw new ProtocolAlreadyListeningException();
}
if (endPoint == null)
{
throw new ArgumentNullException(nameof(endPoint));
}
if (endPoint is not IPEndPoint ipEndPoint)
{
throw new ArgumentException(@"EndPoint must be an IPEndPoint", nameof(endPoint));
}
Server = new FleckWebSocketServer(ipEndPoint, false);
Server.Start(rawConn => {
SockChatConnection conn = new SockChatConnection(rawConn);
rawConn.OnOpen += () => OnOpen(conn);
rawConn.OnClose += () => OnClose(conn);
rawConn.OnError += ex => OnError(conn, ex);
rawConn.OnMessage += msg => OnMessage(conn, msg);
});
}
private static void OnError(SockChatConnection conn, Exception ex)
{
Logger.Write($@"[{conn}] {ex}");
}
private void OnOpen(SockChatConnection conn)
{
Logger.Debug($@"[{conn}] Connection opened");
Connections.AddConnection(conn);
}