Hà Nguyễn
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Hà Nguyễn
try 2.0.0-beta.4-nullsafety.0
`void initState() { socket = io( 'http://xxxx:3000/$namespace', OptionBuilder() .setTransports(['websocket']) .build()); socket.on('event', (data) { print('loading $data'); }); super.initState(); }` try, work for me