Right, and he didn't try out all sockets to find out what is the blacklist. Did he notice that Firefox is open source and reading the source might give good hin

Right, and he didn't try out all sockets to find out what is the blacklist. Did he notice that Firefox is open source and reading the source might give good hints? (On my phone now and not starting to do it myself. But I have run Firefox under gdb before to check how Google Streetview uses WebGL. It's not difficult under Linux at least, even if you like myself know absolutely nothing about the somewhat intimidating code base of Firefox.)