Hello,
Please review this patch for javax/net/ssl/DTLS tests.
A couple of DTLS tests fail intermittently on Mac with timeout or "Too
many handshake loops ..." error. The tests use UDP to transfer DTLS
records. It happens sometimes that server cannot receive UDP packets
with DatagramSocket.receive() method even if client tries to re-send
them multiple times. Please see logs in the bug.
At the moment, it is not clear why UDP packets can't be delivered to
server. If someone has seen something similar before, or has some ideas
what might be the root cause, please let me know.
I think that the tests and DTLS implementation are fine here. Since the
tests are for DTLS, we can workaround this issue by avoiding real UDP
connections. To avoid changing test logic much, we can use a custom
DatagramSocketImpl and DatagramSocketImplFactory implementations to
replace system UDP implementation.
The patch below updates the tests with the following:
- added custom DatagramSocketImpl and DatagramSocketImplFactory
implementations to avoid real UDP connections
- added more test output, so that we can have more info it the tests
fail again
I have run javax/net/ssl/DTLS/CipherSuite.java test in a loop on Mac,
and I didn't see it failed. I also have run javax/net/ssl/DTLS tests on
all supported generic platforms, and they worked fine.
Bug: https://bugs.openjdk.java.net/browse/JDK-8159416
http://cr.openjdk.java.net/~asmotrak/8159416/webrev.00/
Artem
