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
diff --git a/framework/api/system-current.txt b/framework/api/system-current.txt
index 196e023..4a2ed8a 100644
--- a/framework/api/system-current.txt
+++ b/framework/api/system-current.txt
@@ -470,7 +470,7 @@
}
public abstract class SocketKeepalive implements java.lang.AutoCloseable {
- method public final void start(@IntRange(from=0xa, to=0xe10) int, int, @NonNull android.net.Network);
+ method public final void start(@IntRange(from=0xa, to=0xe10) int, int, @Nullable android.net.Network);
field public static final int ERROR_NO_SUCH_SLOT = -33; // 0xffffffdf
field public static final int FLAG_AUTOMATIC_ON_OFF = 1; // 0x1
field public static final int SUCCESS = 0; // 0x0