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Adds the WebSocket module to the Node platform allowing Gren programs to create WebSocket servers and handle client connections.
robinheghan
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Feb 14, 2026
| Ok server -> | ||
| { model = { model | server = Just server } | ||
| , command = | ||
| Stream.writeLineAsBytes "WebSocket server started on port 8085" model.stdout |
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You can simplify these staments with the Stream.Log module.
| ws.on("message", (data, isBinary) => { | ||
| const entry = { data, isBinary }; | ||
| if (waitingForMessageQueue.length > 0) { | ||
| waitingForMessageQueue.shift()(entry); |
| // Each handler reads the current reference from wss on every event fire, | ||
| // so re-evaluating subscriptions updates behavior for existing connections. | ||
| ws.on("message", function (data, isBinary) { | ||
| var handlers = wss.__grenMessageHandlers; |
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would it be better to rename wss to server and ws to client? The names are easy to mix up as it currently stands.
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| {-| Convert a [`ConnectionId`](WebSocketServer.ConnectionId) to an `Int`. | ||
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| Useful for storing connections in a `Dict Int Connection`. |
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Can't we just expose ConnectionId as Int instead of it being a opaque type? 🤔
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Adds WebSocket server capabilities.
This is mostly modeled after the HttpServer module. There are tests but I haven't integrated it into a real application yet (going to work on gren-lang/browser#101 next so I have both parts to test with).