Allow ws:// versus wss:// protocol to be configurable

[alexdixon]

The bit I got stuck on trying to get ssl working for our Rails/nginx setup was that the protocol is hard-coded to ws:// in livereload.js. Changing that to wss allowed me to set up the right ssl proxy in nginx to guard.

[mcmillion]

Ran into this issue trying to get this set up on a new project that's using https. This apparently works in the current livereload project. This project's livereload.js hasn't been updated in 3 years.

[richardonrails]

@mcmillion Where is the "current" livereload project? The README here points to https://github.com/onesupercoder/rack-livereload but it's hardcoded to ws:// there too:

https://github.com/onesupercoder/rack-livereload/blob/c4262f119428870bda5f65f379252c8216499df6/js/livereload.js#L141

[richardonrails]

Also related: guard/guard-livereload#143