Per-message compression can be enabled with the perMessageDeflate parameter. When set, all messages will be compressed using the permessage-deflate WebSocket extension.
Bun.serve({
// ...
websocket: {
// enable compression
perMessageDeflate: true,
},
});
To enable compression for individual messages, pass true as the second parameter to ws.send().
Bun.serve({
// ...
websocket: {
async message(ws, message) {
// send a compressed message
ws.send(message, true);
},
},
});