Hmm... What are you using as your WebSocket server? I was pretty sure masking was optional (so you may find it's a configuration option you can turn off in your server).
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hmm... What are you using as your WebSocket server? I was pretty sure masking was optional (so you may find it's a configuration option you can turn off in your server).