EPOLLERR          600 event/modules/ngx_epoll_module.c         if (revents & (EPOLLERR|EPOLLHUP)) {
EPOLLERR          607 event/modules/ngx_epoll_module.c         if (revents & ~(EPOLLIN|EPOLLOUT|EPOLLERR|EPOLLHUP)) {
EPOLLERR          614 event/modules/ngx_epoll_module.c         if ((revents & (EPOLLERR|EPOLLHUP))