Epoll event engine is missing EPOLLRDHUP

[michaeltalyansky]

This causes CLOSE_WAIT-state sockets to linger. This fix cures it:

@@ -142,7 +142,7 @@ static __thread struct _st_epolldata { #define _ST_EPOLL_EXCEP_CNT(fd) (_st_epoll_data->fd_data[fd].ex_ref_cnt) #define _ST_EPOLL_REVENTS(fd) (_st_epoll_data->fd_data[fd].revents)

-#define _ST_EPOLL_READ_BIT(fd) (_ST_EPOLL_READ_CNT(fd) ? EPOLLIN : 0) +#define _ST_EPOLL_READ_BIT(fd) (_ST_EPOLL_READ_CNT(fd) ? (EPOLLIN|EPOLLRDHUP) : 0) #define _ST_EPOLL_WRITE_BIT(fd) (_ST_EPOLL_WRITE_CNT(fd) ? EPOLLOUT : 0) #define _ST_EPOLL_EXCEP_BIT(fd) (_ST_EPOLL_EXCEP_CNT(fd) ? EPOLLPRI : 0) #define _ST_EPOLL_EVENTS(fd) \

commit accd04fe053eb74613ec3147f09f4d5bdad97880 in my fork.