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Per-message compression can be enabled with the perMessageDeflate parameter. When set, all messages will be compressed using the permessage-deflate WebSocket extension.
https://mintcdn.com/bun-1dd33a4e/Hq64iapoQXHbYMEN/icons/typescript.svg?fit=max&auto=format&n=Hq64iapoQXHbYMEN&q=85&s=c6cceedec8f82d2cc803d7c6ec82b240server.ts
Bun.serve({  // ...  websocket: {  // enable compression  perMessageDeflate: true,  }, });
To enable compression for individual messages, pass true as the second parameter to ws.send().
https://mintcdn.com/bun-1dd33a4e/Hq64iapoQXHbYMEN/icons/typescript.svg?fit=max&auto=format&n=Hq64iapoQXHbYMEN&q=85&s=c6cceedec8f82d2cc803d7c6ec82b240server.ts
Bun.serve({  // ...  websocket: {  async message(ws, message) {  // send a compressed message  ws.send(message, true);  },  }, });