Thanks Matthias,
It does look like a bug. We probably have at least one
IPv4 multicast interfaces on all machines in our CI!
Not sure whether randomly selecting the first one is such
a good idea though - we may have to investigate how
stable the test gets if we fix this...
best regards,
-- daniel
On 06/07/2021 13:26, Baesken, Matthias wrote:
Hi , I wonder about the coding in SocketPermissionTest.java
joinGroupMulticastTest() :
https://github.com/openjdk/jdk/blob/master/test/jdk/java/net/SocketPermission/SocketPermissionTest.java#L224
<https://github.com/openjdk/jdk/blob/master/test/jdk/java/net/SocketPermission/SocketPermissionTest.java#L224>
// Positive ( requires a functional network interface )
Optional<NetworkInterface> onif =
probe().ip4MulticastInterfaces().findFirst();
if (!onif.isPresent()) {
s.setNetworkInterface(onif.get());
In case of !onif.isPresent() , we call in the next line onif get ,
that leads always to a
java.util.NoSuchElementException: No value present
at java.util.Optional.get(Optional.java:135)
at
SocketPermissionTest.joinGroupMulticastTest(SocketPermissionTest.java:221)
Is this really intended ? Should it be if (onif.isPresent()) {..} ?
Best regards, Matthias
