@giangio I haven't set up web sockets in a while but the last time I did I just used the built-in support in Spring, which I would guess is what the plugin does, but just with a nice wrapper around it. What I would do if I were you, would be take the plugin as a base, look at its dependencies, and see about upgrading it. On the other hand Miconaut does have support for web sockets, but I don't know what version that came in, what version of Grails you're using, and if the two coincide or if the feature is usable from Grails, but that might be another alternative to look into.