I once experimented with something like that a few years back, when I was regularly using a WiFi that only allowed HTTP. It’s not hard to tunnel something like

I once experimented with something like that a few years back, when I was regularly using a WiFi that only allowed HTTP. It’s not hard to tunnel something like SOCKS over TLS over base64 over anything that allows sending text, including HTTP. Latency might be a lot worse than the special purpose chatbot though.