Bun
Manually integrate crossws with Bun.
Tip
You can use serve function from crossws/server to automatically integrate crossws with Bun!
To manually integrate crossws with your Bun server, you need to handle upgrade with handleUpgrade util and also pass the websocket object returned from the adapter to server options. crossws leverages native bun WebSocket API.
import crossws from "crossws/adapters/bun";
const ws = crossws({
hooks: {
message: console.log,
},
});
Bun.serve({
port: 3000,
websocket: ws.websocket,
fetch(request, server) {
if (request.headers.get("upgrade") === "websocket") {
return ws.handleUpgrade(request, server);
}
return new Response(
`<script>new WebSocket("ws://localhost:3000").addEventListener('open', (e) => e.target.send("Hello from client!"));</script>`,
{ headers: { "content-type": "text/html" } },
);
},
}); Read more in .
#Idle timeout
The shared idleTimeout option (in seconds) closes connections that die silently (half-open sockets). It maps to Bun's native WebSocket idle timeout, which auto-sends keepalive pings. Defaults to 30; pass 0 to disable.
const ws = crossws({ idleTimeout: 60, hooks: { message: console.log } });