SO_PEEK_OFF
case SO_PEEK_OFF:
case SO_PEEK_OFF:
ret = setsockopt(self->fd[1], SOL_SOCKET, SO_PEEK_OFF,
if (!setsockopt(s, SOL_SOCKET, SO_PEEK_OFF, &optv, sizeof(int)))
if (setsockopt(s, SOL_SOCKET, SO_PEEK_OFF, &offset, sizeof(offset)))
if (getsockopt(s, SOL_SOCKET, SO_PEEK_OFF, &offset, &len))