There's the Perfect [0] library that I recently used to develop a real-time multiplayer TicTacToe proof of concept for iOS. I used the Perfect web socket functi

There's the Perfect [0] library that I recently used to develop a real-time multiplayer TicTacToe proof of concept for iOS. I used the Perfect web socket functionality on the server. Worked out well enough. --- [0]: https://perfect.org https://perfect.org