FD_SET            149 event/modules/ngx_select_module.c         FD_SET(c->fd, &master_read_fd_set);
FD_SET            152 event/modules/ngx_select_module.c         FD_SET(c->fd, &master_write_fd_set);
FD_SET            160 event/modules/ngx_win32_select_module.c         FD_SET(c->fd, &master_read_fd_set);
FD_SET            164 event/modules/ngx_win32_select_module.c         FD_SET(c->fd, &master_write_fd_set);