C#游戏服务器：已建立的连接被中止

我已经阅读了与我的错误相同的所有其他问题，它们不适用于我的情况。

你好。最近，我的游戏服务器出现了一个非常奇怪的错误：

  14:44:18 - Error sending message to socket: An established connection was aborted by the software in your host machine
  14:44:18 - System.Net.Sockets.SocketException (0x80004005): An established connection was aborted by the software in your host machine
   at System.Net.Sockets.Socket.BeginSend(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, AsyncCallback callback, Object state)
   at Hariak_Emulator.Emulator.Base.Game.Habbo.Players.Players.GameClient.SendData(Byte[] data) in C:\Users\User\Desktop\EmuDev17\Hariak Emulator\Hariak Emulator\Emulator\Base\Game\Habbo\Players\Players\PlayerConnection.cs:line 264 System.Net.Sockets.SocketException (0x80004005): An established connection was aborted by the software in your host machine
   at System.Net.Sockets.Socket.BeginSend(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, AsyncCallback callback, Object state)
   at Hariak_Emulator.Emulator.Base.Game.Habbo.Players.Players.GameClient.SendData(Byte[] data) in C:\Users\User\Desktop\EmuDev17\Hariak Emulator\Hariak Emulator\Emulator\Base\Game\Habbo\Players\Players\PlayerConnection.cs:line 264

为什么会这样，有人能帮忙吗？ 下面是它发生的代码（第264行PlayerConnection）：

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此服务器的端口号是多少？我的端口号是30000（30000格式）。请检查您的防火墙是否阻止此端口：如果我错了，请更正我，但如果我在127.0.0.1（localhost）上运行它，它不应该阻止它。另一篇文章建议防火墙超时：

internal void SendData(byte[] data)
{
    try
    {
        _socket.BeginSend(data, 0, data.Length, 0, OnSend, null);
    }
    catch (SocketException socketException)
    {
        Logger.Error("Error sending message to socket: " + socketException.Message);
        Logger.Error(socketException);

        Dispose();
    }
}