if (!q.hasUnacknowledgedClientOps() && q.hasQueuedClientOps()) {
server.sendToServer(q.revision(), q.pushQueuedOpsToUnacked());
}
break;
case SERVER_OP:
server.randomServerOp();
break;
case XHR_RESPONSE:
while (!xhrResponses.isEmpty()) {
int responseVersion = xhrResponses.remove();
q.ackOpsIfVersionMatches(responseVersion);