Merge "Transition to appropriate state after all left addresses have been cleared." into rvc-dev am: fdbc41a222 am: cb04ddcfdc

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/11902482

Change-Id: I484c9996a4c683db193fba7785f2e62e5192ae64

2 files changed, 23 insertions, 3 deletions

diff --git a/src/android/net/ip/IpClient.java b/src/android/net/ip/IpClient.java
index 28effd3..5d5b025 100644
--- a/src/android/net/ip/IpClient.java
+++ b/src/android/net/ip/IpClient.java
@@ -1772,7 +1772,7 @@ public class IpClient extends StateMachine {
                 case EVENT_NETLINK_LINKPROPERTIES_CHANGED:
                     handleLinkPropertiesUpdate(NO_CALLBACKS);
                     if (readyToProceed()) {
-                        transitionTo(mRunningState);
+                        transitionTo(isUsingPreconnection() ? mPreconnectingState : mRunningState);
                     }
                     break;
 
diff --git a/tests/integration/src/android/net/ip/IpClientIntegrationTest.java b/tests/integration/src/android/net/ip/IpClientIntegrationTest.java
index 8a58fcd..f2cc2c6 100644
--- a/tests/integration/src/android/net/ip/IpClientIntegrationTest.java
+++ b/tests/integration/src/android/net/ip/IpClientIntegrationTest.java
@@ -1658,8 +1658,7 @@ public class IpClientIntegrationTest {
         HandlerUtilsKt.waitForIdle(mIpc.getHandler(), TEST_TIMEOUT_MS);
     }
 
-    @Test
-    public void testIpClientClearingIpAddressState() throws Exception {
+    private void doIPv4OnlyProvisioningAndExitWithLeftAddress() throws Exception {
         final long currentTime = System.currentTimeMillis();
         performDhcpHandshake(true /* isSuccessLease */, TEST_LEASE_DURATION_S,
                 true /* isDhcpLeaseCacheEnabled */, false /* shouldReplyRapidCommitAck */,
@@ -1684,6 +1683,11 @@ public class IpClientIntegrationTest {
         // TODO: once IpClient gets IP addresses directly from netlink instead of from netd, it
         // may be sufficient to call waitForIdle to see if IpClient has seen the address.
         addIpAddressAndWaitForIt(mIfaceName);
+    }
+
+    @Test
+    public void testIpClientClearingIpAddressState() throws Exception {
+        doIPv4OnlyProvisioningAndExitWithLeftAddress();
 
         ProvisioningConfiguration config = new ProvisioningConfiguration.Builder()
                 .withoutIpReachabilityMonitor()
@@ -1703,6 +1707,22 @@ public class IpClientIntegrationTest {
     }
 
     @Test
+    public void testIpClientClearingIpAddressState_enablePreconnection() throws Exception {
+        doIPv4OnlyProvisioningAndExitWithLeftAddress();
+
+        // Enter ClearingIpAddressesState to clear the remaining IPv4 addresses and transition to
+        // PreconnectionState instead of RunningState.
+        startIpClientProvisioning(false /* isDhcpLeaseCacheEnabled */,
+                false /* shouldReplyRapidCommitAck */, true /* isDhcpPreConnectionEnabled */,
+                false /* isDhcpIpConflictDetectEnabled */);
+        assertDiscoverPacketOnPreconnectionStart();
+
+        // Force to enter RunningState.
+        mIpc.notifyPreconnectionComplete(false /* abort */);
+        HandlerUtilsKt.waitForIdle(mIpc.getHandler(), TEST_TIMEOUT_MS);
+    }
+
+    @Test
     public void testDhcpClientPreconnection_success() throws Exception {
         doIpClientProvisioningWithPreconnectionTest(true /* shouldReplyRapidCommitAck */,
                 false /* shouldAbortPreconnection */, false /* shouldFirePreconnectionTimeout */,