Is t possible to listen to multiple connections with ReactPHP truly async?

I need to start tcp server that accepts connections and for every connection creates websocket connection to another server, receives data from tcp, processes the data and sends it to WS

Data sent to tcp is being send continuously, so without truly async handling both tcp and ws, I have lost packets

I tried using reactphp/child-process, still child process needs to liste to stdin and WS, so the problem is the same

Im not proficient in reactPHP, am I doing something wrong or is it just impossible with this environment ?