LineageOS/android_packages_modules_Connectivity
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Clear process DNS NetID binding when expiring or releaseing legacy requests.

Browse Source 
When requests made by ConnectivityManager.startUsingNetworkFeature() are
expired or are canceled via ConnectivityManager.stopUsingNetworkFeature(),
we must remember to clear the binding of DNS requests from the calling
process to the Network satisfying the request.

bug:18778725
Change-Id: I800c808ac6486000241b5d263aa79a1192a9fe9e
This commit is contained in:
Paul Jensen
2014-12-17 10:39:34 -05:00
parent 70116ce13c
commit 49f74a382b
1 changed files with 18 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
core/java/android/net/ConnectivityManager.java
View File

@@ -933,10 +933,8 @@ public class ConnectivityManager {
return -1;
}
NetworkCallback networkCallback = removeRequestForFeature(netCap);
if (networkCallback != null) {
if (removeRequestForFeature(netCap)) {
Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature);
unregisterNetworkCallback(networkCallback);
}
return 1;
}
@@ -1103,6 +1101,14 @@ public class ConnectivityManager {
int expireSequenceNumber;
Network currentNetwork;
int delay = -1;
private void clearDnsBinding() {
if (currentNetwork != null) {
currentNetwork = null;
setProcessDefaultNetworkForHostResolution(null);
}
}
NetworkCallback networkCallback = new NetworkCallback() {
@Override
public void onAvailable(Network network) {
@@ -1112,10 +1118,7 @@ public class ConnectivityManager {
}
@Override
public void onLost(Network network) {
if (network.equals(currentNetwork)) {
currentNetwork = null;
setProcessDefaultNetworkForHostResolution(null);
}
if (network.equals(currentNetwork)) clearDnsBinding();
Log.d(TAG, "startUsingNetworkFeature lost Network:" + network);
}
};
@@ -1144,10 +1147,7 @@ public class ConnectivityManager {
LegacyRequest l = sLegacyRequests.get(netCap);
if (l == null) return;
ourSeqNum = l.expireSequenceNumber;
if (l.expireSequenceNumber == sequenceNum) {
unregisterNetworkCallback(l.networkCallback);
sLegacyRequests.remove(netCap);
}
if (l.expireSequenceNumber == sequenceNum) removeRequestForFeature(netCap);
}
Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum);
}
@@ -1178,12 +1178,15 @@ public class ConnectivityManager {
}
}
private NetworkCallback removeRequestForFeature(NetworkCapabilities netCap) {
private boolean removeRequestForFeature(NetworkCapabilities netCap) {
final LegacyRequest l;
synchronized (sLegacyRequests) {
LegacyRequest l = sLegacyRequests.remove(netCap);
if (l == null) return null;
return l.networkCallback;
l = sLegacyRequests.remove(netCap);
}
if (l == null) return false;
unregisterNetworkCallback(l.networkCallback);
l.clearDnsBinding();
return true;
}
/**