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sbool areWeOnline() { bool b = areWeOnline_impl(); vmGeneralMap_set('areWeOnline, pair(sysNow(), b)); ret b; } sbool areWeOnline_impl() { for (Pair p : returnCodesOfMultipleServers_parallel_iterator(defaultTimeoutForOnlineCheck(), defaultServersForOnlineCheck())) if (second(p) >= 0) true; false; }