Solution: use ZMQ_LAST_ENDPOINT in most places. This alllows running
tests in paralle, and on over-booked shared machines where many of
the ports would be already in use.
Keep 3 tests with an hardcoded port, as there are some code paths that
require it (eg: connect before bind), but list those ports in
tests/testutil.hpp as macros so that they do not overlap and still
allow parallel runs.
These changes were inspired by a patch uploaded to Ubuntu by the
package maintainer, Steve Langasek <steve.langasek@ubuntu.com>.
Thank you Steve!
Solution:
- Add checks for **poller_p_ to ensure that we do not segfault when either it
or the value within it are NULL
- Add tests for the above and increase error state coverage
Solution: return -1 (no event) instead of 0 (event)
For some reason, this just returns 0 if there are no sockets registered
on the poller. Usually this would mean there has been an event. So the
caller would have to check the return value AND the event, or write code
that takes the number of registered sockets into consideration.
By returning -1 and setting errno = ETIMEDOUT like in the usual timeout
cases, it's more consistent and convenient.
Test case included.
