I wrote small webserver for proxying serial port requests from the browser to solve a similar problem about 10 years ago. It's not generic enough for what you'r

I wrote small webserver for proxying serial port requests from the browser to solve a similar problem about 10 years ago. It's not generic enough for what you're doing, but something similar would be quick to code. https://github.com/learc83/adapter https://github.com/learc83/adapter