Using poll() on a UDP stream in TLI

[Jason W May]

Under TLI, is it possible to poll() on a file descriptor that is associated
with a UDP transport provider?  e.g.,


	int fd;
	struct pollfd pollfd;
	struct t_unitdata *udataptr;


	fd = t_open ("/dev/udp", O_RDWR, NULL);

	/* t_bind, t_alloc, etc. */

	pollfd.fd = fd;
	poll (&pollfd, 1, -1);

	t_rcvudata (fd, udataptr, &flags);


When I try this, the poll() never returns.  Things work fine if I leave
out the poll and the server just waits for a datagram to arrive; but I
would like to multiplex and listen on a set of streams where several
could be connection-oriented and several connectionless.


Thanks,

Jason (bunyip at world.std.com)