Fix Error WebSocketException When Disconnecting Unity Editor from Server

Game Design
1

Hi, I have been testing the connection between my Unity Editor and Nakama Server running locally. However I got this error after I disconnecting socket:

System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake. ---> System.IO.IOException: Unable to read data from the transport connection: Operation aborted. ---> System.Net.Sockets.SocketException: Operation aborted
   --- End of inner exception stack trace ---

This is my Disconnect Function:

public async void Disconnect()
{
    if (_socket != null)
    {
        if (_socket.IsConnected)
            await _socket.CloseAsync();

        _socket.Connected -= ListenOnSocketConnected;
        _socket.Closed -= ListenOnSocketClosed;

        _socket = null;
    }

    _session = null;
    _client = null;
    _status = NakamaConnectionStatus.Disconnect;
}

The error happens while in game, this is what I did:

1. Connect
2. Disconnect
3. Connect
4. Disconnect -> WebSocketException

It seems fine for runtime but I need to know how to fix this or just letting it be and ignore the error.

  • I’m using Linux - Fedora 43, Nakama Unity SDK version 3.19.0
  • Nakama Server running in local using Docker Compose, version Nakama 3.34.1

Any answer and solution for this issue? I can provide more from my code that I made and currently still working on my game.

Thank You!

2

Hi @JoenTNT,

This is just a mishandling of the socket closure handshake, leading to the exception. A fix is already in place in the latest Nakama versions, but I think the related fix in the client hasn’t been released yet.

You can ignore these exceptions when closing the socket.

Best

3

Aight, Much Obliged! Even thought the client connection logic flow has no problem and runs normally, I will ignore this error until next release.

4

I have updated to Unity SDK 3.21.0, the error is now gone and it runs with no issue.