0702: http2 websockets

might as well add it: needs t be taken into consideration when looking at the whole http2 thing. Will be interesting to see what Tor Browser does with it in ESR68

user.js

@@ -473,6 +473,7 @@ user_pref("network.dns.disableIPv6", true);
 user_pref("network.http.spdy.enabled", false);
 user_pref("network.http.spdy.enabled.deps", false);
 user_pref("network.http.spdy.enabled.http2", false);
+user_pref("network.http.spdy.websockets", false); // [FF65+]
 /* 0703: disable HTTP Alternative Services [FF37+]
  * [SETUP-PERF] Relax this if you have FPI enabled (see 4000) *AND* you understand the
  * consequences. FPI isolates these, but it was designed with the Tor protocol in mind,