lib/extension.js
function closeServer(done) {
            if (self.server) {
                self.server.close();
                self.server.removeListener('error', handlers.relayError);
            }
            self.httpServer.close(done);
        }
function closeServer(done) {
            if (self.server) {
                self.server.close();
                self.server.removeListener('error', handlers.relayError);
            }
            self.httpServer.close(done);
        }
function closeServer ( done ) { if ( self . server ) { self . server . close ( ) ; self . server . removeListener ( 'error' , handlers . relayError ) ; } self . httpServer . close ( done ) ; }
close down the the server used for websockets
close down the the server used for websockets