Merge changes from topic "removeNI" am: c2d6240642 am: bd414490cb am: 4bd67ddfa9
Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1536707
MUST ONLY BE SUBMITTED BY AUTOMERGER
Change-Id: I3553ff41d85f44c481ea065e6cbda5d286f9e1fa
diff --git a/core/java/android/net/NetworkIdentity.java b/core/java/android/net/NetworkIdentity.java
index 5d8122b..32b19a4 100644
--- a/core/java/android/net/NetworkIdentity.java
+++ b/core/java/android/net/NetworkIdentity.java
@@ -32,7 +32,7 @@
/**
* Network definition that includes strong identity. Analogous to combining
- * {@link NetworkInfo} and an IMSI.
+ * {@link NetworkCapabilities} and an IMSI.
*
* @hide
*/
@@ -160,7 +160,7 @@
*/
public static NetworkIdentity buildNetworkIdentity(Context context, NetworkState state,
boolean defaultNetwork, @NetworkType int subType) {
- final int type = state.networkInfo.getType();
+ final int legacyType = state.legacyNetworkType;
String subscriberId = null;
String networkId = null;
@@ -171,7 +171,7 @@
subscriberId = state.subscriberId;
- if (type == TYPE_WIFI) {
+ if (legacyType == TYPE_WIFI) {
if (state.networkCapabilities.getSsid() != null) {
networkId = state.networkCapabilities.getSsid();
if (networkId == null) {
@@ -184,7 +184,7 @@
}
}
- return new NetworkIdentity(type, subType, subscriberId, networkId, roaming, metered,
+ return new NetworkIdentity(legacyType, subType, subscriberId, networkId, roaming, metered,
defaultNetwork);
}
diff --git a/core/java/android/net/NetworkState.java b/core/java/android/net/NetworkState.java
index e1ef8b5..e466d2e 100644
--- a/core/java/android/net/NetworkState.java
+++ b/core/java/android/net/NetworkState.java
@@ -17,6 +17,7 @@
package android.net;
import android.annotation.NonNull;
+import android.annotation.Nullable;
import android.compat.annotation.UnsupportedAppUsage;
import android.os.Build;
import android.os.Parcel;
@@ -41,6 +42,7 @@
public final Network network;
public final String subscriberId;
public final String networkId;
+ public final int legacyNetworkType;
private NetworkState() {
networkInfo = null;
@@ -49,17 +51,35 @@
network = null;
subscriberId = null;
networkId = null;
+ legacyNetworkType = 0;
}
+ public NetworkState(int legacyNetworkType, @NonNull LinkProperties linkProperties,
+ @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+ @Nullable String subscriberId, @Nullable String networkId) {
+ this(legacyNetworkType, new NetworkInfo(legacyNetworkType, 0, null, null), linkProperties,
+ networkCapabilities, network, subscriberId, networkId);
+ }
+
+ // Constructor that used internally in ConnectivityService mainline module.
public NetworkState(@NonNull NetworkInfo networkInfo, @NonNull LinkProperties linkProperties,
@NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
String subscriberId, String networkId) {
+ this(networkInfo.getType(), networkInfo, linkProperties,
+ networkCapabilities, network, subscriberId, networkId);
+ }
+
+ public NetworkState(int legacyNetworkType, @NonNull NetworkInfo networkInfo,
+ @NonNull LinkProperties linkProperties,
+ @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+ String subscriberId, String networkId) {
this.networkInfo = networkInfo;
this.linkProperties = linkProperties;
this.networkCapabilities = networkCapabilities;
this.network = network;
this.subscriberId = subscriberId;
this.networkId = networkId;
+ this.legacyNetworkType = legacyNetworkType;
// This object is an atomic view of a network, so the various components
// should always agree on roaming state.
@@ -80,6 +100,7 @@
network = in.readParcelable(null);
subscriberId = in.readString();
networkId = in.readString();
+ legacyNetworkType = in.readInt();
}
@Override
@@ -95,6 +116,7 @@
out.writeParcelable(network, flags);
out.writeString(subscriberId);
out.writeString(networkId);
+ out.writeInt(legacyNetworkType);
}
@UnsupportedAppUsage
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 06f9358..2f88351 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -1894,7 +1894,8 @@
final ArrayList<NetworkState> result = new ArrayList<>();
for (Network network : getAllNetworks()) {
final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
- if (nai != null) {
+ // TODO: Consider include SUSPENDED networks.
+ if (nai != null && nai.networkInfo.isConnected()) {
// TODO (b/73321673) : NetworkState contains a copy of the
// NetworkCapabilities, which may contain UIDs of apps to which the
// network applies. Should the UIDs be cleared so as not to leak or
diff --git a/services/core/java/com/android/server/net/NetworkPolicyManagerService.java b/services/core/java/com/android/server/net/NetworkPolicyManagerService.java
index b99a552..aa7da54 100644
--- a/services/core/java/com/android/server/net/NetworkPolicyManagerService.java
+++ b/services/core/java/com/android/server/net/NetworkPolicyManagerService.java
@@ -1961,14 +1961,13 @@
if (state.network != null) {
mNetIdToSubId.put(state.network.netId, parseSubId(state));
}
- if (state.networkInfo != null && state.networkInfo.isConnected()) {
- // Policies matched by NPMS only match by subscriber ID or by ssid. Thus subtype
- // in the object created here is never used and its value doesn't matter, so use
- // NETWORK_TYPE_UNKNOWN.
- final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
- true, TelephonyManager.NETWORK_TYPE_UNKNOWN /* subType */);
- identified.put(state, ident);
- }
+
+ // Policies matched by NPMS only match by subscriber ID or by ssid. Thus subtype
+ // in the object created here is never used and its value doesn't matter, so use
+ // NETWORK_TYPE_UNKNOWN.
+ final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
+ true, TelephonyManager.NETWORK_TYPE_UNKNOWN /* subType */);
+ identified.put(state, ident);
}
final ArraySet<String> newMeteredIfaces = new ArraySet<>();
@@ -2043,8 +2042,7 @@
// One final pass to catch any metered ifaces that don't have explicitly
// defined policies; typically Wi-Fi networks.
for (NetworkState state : states) {
- if (state.networkInfo != null && state.networkInfo.isConnected()
- && !state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) {
+ if (!state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) {
matchingIfaces.clear();
collectIfaces(matchingIfaces, state);
for (int j = matchingIfaces.size() - 1; j >= 0; j--) {
diff --git a/services/core/java/com/android/server/net/NetworkStatsService.java b/services/core/java/com/android/server/net/NetworkStatsService.java
index 0ab35a9..9706bce 100644
--- a/services/core/java/com/android/server/net/NetworkStatsService.java
+++ b/services/core/java/com/android/server/net/NetworkStatsService.java
@@ -96,7 +96,6 @@
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkIdentity;
-import android.net.NetworkInfo;
import android.net.NetworkStack;
import android.net.NetworkState;
import android.net.NetworkStats;
@@ -1264,7 +1263,7 @@
/**
* Inspect all current {@link NetworkState} to derive mapping from {@code iface} to {@link
- * NetworkStatsHistory}. When multiple {@link NetworkInfo} are active on a single {@code iface},
+ * NetworkStatsHistory}. When multiple networks are active on a single {@code iface},
* they are combined under a single {@link NetworkIdentitySet}.
*/
@GuardedBy("mStatsLock")
@@ -1294,84 +1293,82 @@
final boolean combineSubtypeEnabled = mSettings.getCombineSubtypeEnabled();
final ArraySet<String> mobileIfaces = new ArraySet<>();
for (NetworkState state : states) {
- if (state.networkInfo.isConnected()) {
- final boolean isMobile = isNetworkTypeMobile(state.networkInfo.getType());
- final boolean isDefault = ArrayUtils.contains(mDefaultNetworks, state.network);
- final int subType = combineSubtypeEnabled ? SUBTYPE_COMBINED
- : getSubTypeForState(state);
- final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
- isDefault, subType);
+ final boolean isMobile = isNetworkTypeMobile(state.legacyNetworkType);
+ final boolean isDefault = ArrayUtils.contains(mDefaultNetworks, state.network);
+ final int subType = combineSubtypeEnabled ? SUBTYPE_COMBINED
+ : getSubTypeForState(state);
+ final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
+ isDefault, subType);
- // Traffic occurring on the base interface is always counted for
- // both total usage and UID details.
- final String baseIface = state.linkProperties.getInterfaceName();
- if (baseIface != null) {
- findOrCreateNetworkIdentitySet(mActiveIfaces, baseIface).add(ident);
- findOrCreateNetworkIdentitySet(mActiveUidIfaces, baseIface).add(ident);
+ // Traffic occurring on the base interface is always counted for
+ // both total usage and UID details.
+ final String baseIface = state.linkProperties.getInterfaceName();
+ if (baseIface != null) {
+ findOrCreateNetworkIdentitySet(mActiveIfaces, baseIface).add(ident);
+ findOrCreateNetworkIdentitySet(mActiveUidIfaces, baseIface).add(ident);
- // Build a separate virtual interface for VT (Video Telephony) data usage.
- // Only do this when IMS is not metered, but VT is metered.
- // If IMS is metered, then the IMS network usage has already included VT usage.
- // VT is considered always metered in framework's layer. If VT is not metered
- // per carrier's policy, modem will report 0 usage for VT calls.
- if (state.networkCapabilities.hasCapability(
- NetworkCapabilities.NET_CAPABILITY_IMS) && !ident.getMetered()) {
+ // Build a separate virtual interface for VT (Video Telephony) data usage.
+ // Only do this when IMS is not metered, but VT is metered.
+ // If IMS is metered, then the IMS network usage has already included VT usage.
+ // VT is considered always metered in framework's layer. If VT is not metered
+ // per carrier's policy, modem will report 0 usage for VT calls.
+ if (state.networkCapabilities.hasCapability(
+ NetworkCapabilities.NET_CAPABILITY_IMS) && !ident.getMetered()) {
- // Copy the identify from IMS one but mark it as metered.
- NetworkIdentity vtIdent = new NetworkIdentity(ident.getType(),
- ident.getSubType(), ident.getSubscriberId(), ident.getNetworkId(),
- ident.getRoaming(), true /* metered */,
- true /* onDefaultNetwork */);
- findOrCreateNetworkIdentitySet(mActiveIfaces, IFACE_VT).add(vtIdent);
- findOrCreateNetworkIdentitySet(mActiveUidIfaces, IFACE_VT).add(vtIdent);
- }
-
- if (isMobile) {
- mobileIfaces.add(baseIface);
- }
+ // Copy the identify from IMS one but mark it as metered.
+ NetworkIdentity vtIdent = new NetworkIdentity(ident.getType(),
+ ident.getSubType(), ident.getSubscriberId(), ident.getNetworkId(),
+ ident.getRoaming(), true /* metered */,
+ true /* onDefaultNetwork */);
+ findOrCreateNetworkIdentitySet(mActiveIfaces, IFACE_VT).add(vtIdent);
+ findOrCreateNetworkIdentitySet(mActiveUidIfaces, IFACE_VT).add(vtIdent);
}
- // Traffic occurring on stacked interfaces is usually clatd.
- //
- // UID stats are always counted on the stacked interface and never on the base
- // interface, because the packets on the base interface do not actually match
- // application sockets (they're not IPv4) and thus the app uid is not known.
- // For receive this is obvious: packets must be translated from IPv6 to IPv4
- // before the application socket can be found.
- // For transmit: either they go through the clat daemon which by virtue of going
- // through userspace strips the original socket association during the IPv4 to
- // IPv6 translation process, or they are offloaded by eBPF, which doesn't:
- // However, on an ebpf device the accounting is done in cgroup ebpf hooks,
- // which don't trigger again post ebpf translation.
- // (as such stats accounted to the clat uid are ignored)
- //
- // Interface stats are more complicated.
- //
- // eBPF offloaded 464xlat'ed packets never hit base interface ip6tables, and thus
- // *all* statistics are collected by iptables on the stacked v4-* interface.
- //
- // Additionally for ingress all packets bound for the clat IPv6 address are dropped
- // in ip6tables raw prerouting and thus even non-offloaded packets are only
- // accounted for on the stacked interface.
- //
- // For egress, packets subject to eBPF offload never appear on the base interface
- // and only appear on the stacked interface. Thus to ensure packets increment
- // interface stats, we must collate data from stacked interfaces. For xt_qtaguid
- // (or non eBPF offloaded) TX they would appear on both, however egress interface
- // accounting is explicitly bypassed for traffic from the clat uid.
- //
- final List<LinkProperties> stackedLinks = state.linkProperties.getStackedLinks();
- for (LinkProperties stackedLink : stackedLinks) {
- final String stackedIface = stackedLink.getInterfaceName();
- if (stackedIface != null) {
- findOrCreateNetworkIdentitySet(mActiveIfaces, stackedIface).add(ident);
- findOrCreateNetworkIdentitySet(mActiveUidIfaces, stackedIface).add(ident);
- if (isMobile) {
- mobileIfaces.add(stackedIface);
- }
+ if (isMobile) {
+ mobileIfaces.add(baseIface);
+ }
+ }
- mStatsFactory.noteStackedIface(stackedIface, baseIface);
+ // Traffic occurring on stacked interfaces is usually clatd.
+ //
+ // UID stats are always counted on the stacked interface and never on the base
+ // interface, because the packets on the base interface do not actually match
+ // application sockets (they're not IPv4) and thus the app uid is not known.
+ // For receive this is obvious: packets must be translated from IPv6 to IPv4
+ // before the application socket can be found.
+ // For transmit: either they go through the clat daemon which by virtue of going
+ // through userspace strips the original socket association during the IPv4 to
+ // IPv6 translation process, or they are offloaded by eBPF, which doesn't:
+ // However, on an ebpf device the accounting is done in cgroup ebpf hooks,
+ // which don't trigger again post ebpf translation.
+ // (as such stats accounted to the clat uid are ignored)
+ //
+ // Interface stats are more complicated.
+ //
+ // eBPF offloaded 464xlat'ed packets never hit base interface ip6tables, and thus
+ // *all* statistics are collected by iptables on the stacked v4-* interface.
+ //
+ // Additionally for ingress all packets bound for the clat IPv6 address are dropped
+ // in ip6tables raw prerouting and thus even non-offloaded packets are only
+ // accounted for on the stacked interface.
+ //
+ // For egress, packets subject to eBPF offload never appear on the base interface
+ // and only appear on the stacked interface. Thus to ensure packets increment
+ // interface stats, we must collate data from stacked interfaces. For xt_qtaguid
+ // (or non eBPF offloaded) TX they would appear on both, however egress interface
+ // accounting is explicitly bypassed for traffic from the clat uid.
+ //
+ final List<LinkProperties> stackedLinks = state.linkProperties.getStackedLinks();
+ for (LinkProperties stackedLink : stackedLinks) {
+ final String stackedIface = stackedLink.getInterfaceName();
+ if (stackedIface != null) {
+ findOrCreateNetworkIdentitySet(mActiveIfaces, stackedIface).add(ident);
+ findOrCreateNetworkIdentitySet(mActiveUidIfaces, stackedIface).add(ident);
+ if (isMobile) {
+ mobileIfaces.add(stackedIface);
}
+
+ mStatsFactory.noteStackedIface(stackedIface, baseIface);
}
}
}
diff --git a/services/tests/servicestests/src/com/android/server/net/NetworkPolicyManagerServiceTest.java b/services/tests/servicestests/src/com/android/server/net/NetworkPolicyManagerServiceTest.java
index 58ba907..3ebe4ef 100644
--- a/services/tests/servicestests/src/com/android/server/net/NetworkPolicyManagerServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/net/NetworkPolicyManagerServiceTest.java
@@ -19,11 +19,13 @@
import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
import static android.Manifest.permission.NETWORK_STACK;
import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
+import static android.net.ConnectivityManager.TYPE_MOBILE;
import static android.net.ConnectivityManager.TYPE_WIFI;
import static android.net.INetd.FIREWALL_CHAIN_RESTRICTED;
import static android.net.INetd.FIREWALL_RULE_ALLOW;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING;
import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
+import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
import static android.net.NetworkPolicy.LIMIT_DISABLED;
import static android.net.NetworkPolicy.SNOOZE_NEVER;
import static android.net.NetworkPolicy.WARNING_DISABLED;
@@ -112,8 +114,6 @@
import android.net.LinkProperties;
import android.net.Network;
import android.net.NetworkCapabilities;
-import android.net.NetworkInfo;
-import android.net.NetworkInfo.DetailedState;
import android.net.NetworkPolicy;
import android.net.NetworkPolicyManager;
import android.net.NetworkState;
@@ -1985,13 +1985,6 @@
return users;
}
- private NetworkInfo buildNetworkInfo() {
- final NetworkInfo ni = new NetworkInfo(ConnectivityManager.TYPE_MOBILE,
- TelephonyManager.NETWORK_TYPE_LTE, null, null);
- ni.setDetailedState(NetworkInfo.DetailedState.CONNECTED, null, null);
- return ni;
- }
-
private LinkProperties buildLinkProperties(String iface) {
final LinkProperties lp = new LinkProperties();
lp.setInterfaceName(iface);
@@ -2045,13 +2038,12 @@
}
private static NetworkState buildWifi() {
- final NetworkInfo info = new NetworkInfo(TYPE_WIFI, 0, null, null);
- info.setDetailedState(DetailedState.CONNECTED, null, null);
final LinkProperties prop = new LinkProperties();
prop.setInterfaceName(TEST_IFACE);
final NetworkCapabilities networkCapabilities = new NetworkCapabilities();
+ networkCapabilities.addTransportType(TRANSPORT_WIFI);
networkCapabilities.setSSID(TEST_SSID);
- return new NetworkState(info, prop, networkCapabilities, null, null, TEST_SSID);
+ return new NetworkState(TYPE_WIFI, prop, networkCapabilities, null, null, TEST_SSID);
}
private void expectHasInternetPermission(int uid, boolean hasIt) throws Exception {
@@ -2072,7 +2064,7 @@
when(mCarrierConfigManager.getConfigForSubId(eq(TEST_SUB_ID)))
.thenReturn(mCarrierConfig);
when(mConnManager.getAllNetworkState()).thenReturn(new NetworkState[] {
- new NetworkState(buildNetworkInfo(),
+ new NetworkState(TYPE_MOBILE,
buildLinkProperties(TEST_IFACE),
buildNetworkCapabilities(TEST_SUB_ID, roaming),
new Network(TEST_NET_ID), TEST_IMSI, null)
diff --git a/tests/net/java/android/net/NetworkTemplateTest.kt b/tests/net/java/android/net/NetworkTemplateTest.kt
index 91fcbc0..1f8f6f3 100644
--- a/tests/net/java/android/net/NetworkTemplateTest.kt
+++ b/tests/net/java/android/net/NetworkTemplateTest.kt
@@ -35,7 +35,6 @@
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
-import org.mockito.Mockito.doReturn
import org.mockito.Mockito.mock
import org.mockito.MockitoAnnotations
import kotlin.test.assertFalse
@@ -60,16 +59,13 @@
subscriberId: String? = null,
ssid: String? = null
): NetworkState {
- val info = mock(NetworkInfo::class.java)
- doReturn(type).`when`(info).type
- doReturn(NetworkInfo.State.CONNECTED).`when`(info).state
val lp = LinkProperties()
val caps = NetworkCapabilities().apply {
setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED, false)
setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING, true)
setSSID(ssid)
}
- return NetworkState(info, lp, caps, mock(Network::class.java), subscriberId, ssid)
+ return NetworkState(type, lp, caps, mock(Network::class.java), subscriberId, ssid)
}
private fun NetworkTemplate.assertMatches(ident: NetworkIdentity) =
diff --git a/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
index dde78aa..214c82d 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -80,8 +80,6 @@
import android.net.LinkProperties;
import android.net.Network;
import android.net.NetworkCapabilities;
-import android.net.NetworkInfo;
-import android.net.NetworkInfo.DetailedState;
import android.net.NetworkState;
import android.net.NetworkStats;
import android.net.NetworkStatsHistory;
@@ -1456,8 +1454,6 @@
}
private static NetworkState buildWifiState(boolean isMetered, @NonNull String iface) {
- final NetworkInfo info = new NetworkInfo(TYPE_WIFI, 0, null, null);
- info.setDetailedState(DetailedState.CONNECTED, null, null);
final LinkProperties prop = new LinkProperties();
prop.setInterfaceName(iface);
final NetworkCapabilities capabilities = new NetworkCapabilities();
@@ -1465,7 +1461,7 @@
capabilities.setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING, true);
capabilities.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
capabilities.setSSID(TEST_SSID);
- return new NetworkState(info, prop, capabilities, WIFI_NETWORK, null, TEST_SSID);
+ return new NetworkState(TYPE_WIFI, prop, capabilities, WIFI_NETWORK, null, TEST_SSID);
}
private static NetworkState buildMobile3gState(String subscriberId) {
@@ -1473,17 +1469,14 @@
}
private static NetworkState buildMobile3gState(String subscriberId, boolean isRoaming) {
- final NetworkInfo info = new NetworkInfo(
- TYPE_MOBILE, TelephonyManager.NETWORK_TYPE_UMTS, null, null);
- info.setDetailedState(DetailedState.CONNECTED, null, null);
- info.setRoaming(isRoaming);
final LinkProperties prop = new LinkProperties();
prop.setInterfaceName(TEST_IFACE);
final NetworkCapabilities capabilities = new NetworkCapabilities();
capabilities.setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED, false);
capabilities.setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING, !isRoaming);
capabilities.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
- return new NetworkState(info, prop, capabilities, MOBILE_NETWORK, subscriberId, null);
+ return new NetworkState(
+ TYPE_MOBILE, prop, capabilities, MOBILE_NETWORK, subscriberId, null);
}
private NetworkStats buildEmptyStats() {
@@ -1491,11 +1484,9 @@
}
private static NetworkState buildVpnState() {
- final NetworkInfo info = new NetworkInfo(TYPE_VPN, 0, null, null);
- info.setDetailedState(DetailedState.CONNECTED, null, null);
final LinkProperties prop = new LinkProperties();
prop.setInterfaceName(TUN_IFACE);
- return new NetworkState(info, prop, new NetworkCapabilities(), VPN_NETWORK, null, null);
+ return new NetworkState(TYPE_VPN, prop, new NetworkCapabilities(), VPN_NETWORK, null, null);
}
private long getElapsedRealtime() {