from asyncio import sleep from fasthtml.common import * app = FastHTML(ws_hdr=True) rt = app.route def mk_inp(): return Input(id='msg') nid = 'notifications' @rt('/') async def get(): cts = Div( Div(id=nid), Form(mk_inp(), id='form', ws_send=True), hx_ext='ws', ws_connect='/ws') return Titled('Websocket Test', cts) async def on_connect(send): await send(Div('Hello, you have connected', id=nid)) async def on_disconnect( ): print('Disconnected!') @app.ws('/ws', conn=on_connect, disconn=on_disconnect) async def ws(msg:str, send): await send(Div('Hello ' + msg, id=nid)) await sleep(2) return Div('Goodbye ' + msg, id=nid), mk_inp() serve()