Hi, If I run the attached example [websocket.zip](https://github.com/theturtle32/WebSocket-Node/files/14522187/websocket.zip) with nodejs it works: ``` $ node server.js Thu Mar 07 2024 09:39:55 GMT+0000 (Coordinated Universal Time) Server is listening on port 8080 Thu Mar 07 2024 09:40:13 GMT+0000 (Coordinated Universal Time) Connection accepted. Received Message: 397030 Received Message: 10038402 Received Message: 6845227 Received Message: 2955012 Received Message: 5366268 Received Message: 4668963 ``` ``` $ node client.js WebSocket Client Connected Received: '397030' Received: '10038402' Received: '6845227' Received: '2955012' Received: '5366268' Received: '4668963' ``` , but with bun it doesn't: ``` $ bun server.js Thu Mar 07 2024 09:52:10 GMT+0000 (Coordinated Universal Time) Server is listening on port 8080 Thu Mar 07 2024 09:52:15 GMT+0000 (Coordinated Universal Time) Connection accepted. ``` `$ bun client.js ` Same result if I also use nodejs for the client part. Any idea? Probably not related to this issue but I also tried nodejs for the server and bun for the client and following error occurs (I have added headers dump in the log trace): ``` $ node server.js Thu Mar 07 2024 10:00:12 GMT+0000 (Coordinated Universal Time) Server is listening on port 8080 Thu Mar 07 2024 10:00:17 GMT+0000 (Coordinated Universal Time) Received request for / with headers {"host":"localhost:8080","sec-websocket-key":"ku8AfoxHZGmLPCmPCxoxlQ==","sec-websocket-protocol":"echo-protocol","sec-websocket-version":"13","upgrade":"websocket","connection":"keep-alive","user-agent":"Bun/1.0.30","accept":"*/*"} ``` ``` $ bun client.js Connect Error: Error: Server responded with a non-101 status: 404 Not Found Response Headers Follow: date: Thu, 07 Mar 2024 09:54:38 GMT connection: keep-alive keep-alive: timeout=5 transfer-encoding: chunked ```