Correct nullability and add extra check for underpinnedNetwork
As the review feedback, this commits address below concern.
1. The TCP keepalive code doesn't use the network parameter
at all. This parameter doesn't seem meaningful for TCP
keepalives. Starting a TCP keepalive with a non-null underpinned
network should throw IllegalArgumentException.
2. The feedback mention that the start version which takes a
@NonNull network should throw NPE if the network is null. But
Starting a NATT keepalive does not always require a underpinned
network. A new IkeSession started from Vpn will also not assign
the underpinned network at the initial stage which means
underpinned will be null until setNetwork() is called. Thus,
the underpinned network should be @Nullable instead.
Fix: 271797087
Test: atest FrameworksNetTests
Change-Id: Ieb57a7b15a06b2ccd94358b65cc00768c4f62e7d
3 files changed