xaccept_nonblock
p = xaccept_nonblock(s, NULL, NULL);
p = xaccept_nonblock(s, NULL, NULL);
p0 = xaccept_nonblock(s, NULL, NULL);
p = xaccept_nonblock(s, NULL, NULL);
p = xaccept_nonblock(s, NULL, NULL);
p = xaccept_nonblock(s, NULL, NULL);
p = xaccept_nonblock(s, NULL, NULL);