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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.net.NetworkInfo.DetailedState;
import android.net.NetworkInfo;
import android.net.LinkProperties;
import android.util.Slog;
/**
* A dummy data state tracker for use when we don't have a real radio
* connection. useful when bringing up a board or when you have network
* access through other means.
*
* {@hide}
*/
public class DummyDataStateTracker implements NetworkStateTracker {
private static final String TAG = "DummyDataStateTracker";
private static final boolean DBG = true;
private static final boolean VDBG = false;
private NetworkInfo mNetworkInfo;
private boolean mTeardownRequested = false;
private Handler mTarget;
private Context mContext;
private LinkProperties mLinkProperties;
private LinkCapabilities mLinkCapabilities;
private boolean mPrivateDnsRouteSet = false;
private boolean mDefaultRouteSet = false;
// DEFAULT and HIPRI are the same connection. If we're one of these we need to check if
// the other is also disconnected before we reset sockets
private boolean mIsDefaultOrHipri = false;
/**
* Create a new DummyDataStateTracker
* @param netType the ConnectivityManager network type
* @param tag the name of this network
*/
public DummyDataStateTracker(int netType, String tag) {
mNetworkInfo = new NetworkInfo(netType);
}
/**
* Begin monitoring data connectivity.
*
* @param context is the current Android context
* @param target is the Handler to which to return the events.
*/
public void startMonitoring(Context context, Handler target) {
mTarget = target;
mContext = context;
}
public boolean isPrivateDnsRouteSet() {
return mPrivateDnsRouteSet;
}
public void privateDnsRouteSet(boolean enabled) {
mPrivateDnsRouteSet = enabled;
}
public NetworkInfo getNetworkInfo() {
return mNetworkInfo;
}
public boolean isDefaultRouteSet() {
return mDefaultRouteSet;
}
public void defaultRouteSet(boolean enabled) {
mDefaultRouteSet = enabled;
}
/**
* This is not implemented.
*/
public void releaseWakeLock() {
}
/**
* Report whether data connectivity is possible.
*/
public boolean isAvailable() {
return true;
}
/**
* Return the system properties name associated with the tcp buffer sizes
* for this network.
*/
public String getTcpBufferSizesPropName() {
return "net.tcp.buffersize.unknown";
}
/**
* Tear down mobile data connectivity, i.e., disable the ability to create
* mobile data connections.
* TODO - make async and return nothing?
*/
public boolean teardown() {
setDetailedState(NetworkInfo.DetailedState.DISCONNECTING, "disabled", null);
setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, "disabled", null);
return true;
}
/**
* Record the detailed state of a network, and if it is a
* change from the previous state, send a notification to
* any listeners.
* @param state the new @{code DetailedState}
* @param reason a {@code String} indicating a reason for the state change,
* if one was supplied. May be {@code null}.
* @param extraInfo optional {@code String} providing extra information about the state change
*/
private void setDetailedState(NetworkInfo.DetailedState state, String reason,
String extraInfo) {
if (DBG) log("setDetailed state, old ="
+ mNetworkInfo.getDetailedState() + " and new state=" + state);
mNetworkInfo.setDetailedState(state, reason, extraInfo);
Message msg = mTarget.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
msg.sendToTarget();
}
public void setTeardownRequested(boolean isRequested) {
mTeardownRequested = isRequested;
}
public boolean isTeardownRequested() {
return mTeardownRequested;
}
/**
* Re-enable mobile data connectivity after a {@link #teardown()}.
* TODO - make async and always get a notification?
*/
public boolean reconnect() {
setDetailedState(NetworkInfo.DetailedState.CONNECTING, "enabled", null);
setDetailedState(NetworkInfo.DetailedState.CONNECTED, "enabled", null);
setTeardownRequested(false);
return true;
}
/**
* Turn on or off the mobile radio. No connectivity will be possible while the
* radio is off. The operation is a no-op if the radio is already in the desired state.
* @param turnOn {@code true} if the radio should be turned on, {@code false} if
*/
public boolean setRadio(boolean turnOn) {
return true;
}
public void setDataEnable(boolean enabled) {
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer("Dummy data state: none, dummy!");
return sb.toString();
}
/**
* @see android.net.NetworkStateTracker#getLinkProperties()
*/
public LinkProperties getLinkProperties() {
return new LinkProperties(mLinkProperties);
}
/**
* @see android.net.NetworkStateTracker#getLinkCapabilities()
*/
public LinkCapabilities getLinkCapabilities() {
return new LinkCapabilities(mLinkCapabilities);
}
public void setDependencyMet(boolean met) {
// not supported on this network
}
static private void log(String s) {
Slog.d(TAG, s);
}
static private void loge(String s) {
Slog.e(TAG, s);
}
}
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