Show HN: Family Chess: Play across firewalls and Internet cultures

Re:Show HN: Family Chess: Play across firewalls and Internet... by utopiah on Saturday September 27, 2025 @05:38AM (#45394392)

Out of curiosity what kind of traffic is safe?

In the context of chess I would imagine passing JSON around via EventSource/SSE should be more than enough.

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Re:Show HN: Family Chess: Play across firewalls and Internet... by kelvinquee on Saturday September 27, 2025 @06:01AM (#45394487)

I'm not sure. The GFW is rather tricky and is known to do DPI.

For now, yes we are communicating moves in exactly the way you described EventSource! Eg:

{ "fen": "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1", "status": "active", "turn": "b", "white_ready": true, "black_ready": true, "spectators": 1, "in_check": false, "last_move": "e2e4", "game_over": false, "available_colors": [], "reservations": { "white": {"reserved": true, "expires_in": 0}, "black": {"reserved": true, "expires_in": 0} } }

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