while using udp, we later open a file descriptor for the worker. With a
listen netns config, I overlooked this case which oblige me to move the
struct containing the file descriptor in the main one. Then I can access
them from each worker to make it possible to open the socket in the
correct netns. I also need to keep the netns fd open during the whole
life of the process.
the issue was not visible on a tcp-only case, but while using udp you
can see logs such as:
main[user]: x.x.x.x:54024 bind UDP to 0.0.0.0:443: Cannot assign requested address
worker[user]: x.x.x.x setting up DTLS-PSK connection
main[user]: x.x.x.x:54024 bind UDP to 0.0.0.0:443: Cannot assign requested address
update tests to reflects that:
- instead of creating our own netns, use the one created in common.sh
- we start server in ns1, but listen in ns2, and test client from ns3
(we don't want to listen in ns1 to test listen-ns)
Signed-off-by: William Dauchy <w.dauchy@criteo.com>
80babceacf