I've spend a few hours reading about WebRTC and everywhere it's recommended to use a secure connection for contacting with the signal server, so no MitM attacks could be possible.
However, my project is aimed at video streaming (public), so I really don't care (I think) if someone is eavesdropping the connection to the signal server because it's only information about an already public resource. So... why would I need to use WSS instead of WS? Is there any other attack I may face if I'm not using WSS?