java: Add Syncbase Ping Pong App
This is the first commit for the syncbase ping pong app.
It has some rough edges but has the basic level of functionality.
- Prepares 2 devices to sync with each other
- Runs the test over |numTimes| iterations to compute an average time
to send ping and pong between devices.
- Can use the proxy (optionally)
Iteration time (w/o proxy): 425-490ms
Iteration time (w/ proxy): 996-1098ms
Missing features:
- Ability to stop the test in the middle.
- Ability to restart the test or start a second test.
- Ability to run the test again without deleting the app's data through
the Android settings menu.
Change-Id: Ib1e99af32ba4162bc0613ea0fe609614b2059547
diff --git a/projects/syncpingpong/PingPongApp/.gitignore b/projects/syncpingpong/PingPongApp/.gitignore
new file mode 100644
index 0000000..c6cbe56
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/.gitignore
@@ -0,0 +1,8 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
diff --git a/projects/syncpingpong/PingPongApp/app/.gitignore b/projects/syncpingpong/PingPongApp/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/projects/syncpingpong/PingPongApp/app/build.gradle b/projects/syncpingpong/PingPongApp/app/build.gradle
new file mode 100644
index 0000000..2d97091
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/build.gradle
@@ -0,0 +1,67 @@
+buildscript {
+ repositories {
+ mavenCentral()
+ }
+ dependencies {
+ // We are going to define a custom VDL service. The Vanadium
+ // Gradle plugin makes that easier, so let's use that.
+ classpath 'io.v:gradle-plugin:0.1'
+ // Use the Android SDK manager, which will automatically download
+ // the required Android SDK.
+ classpath 'com.jakewharton.sdkmanager:gradle-plugin:0.12.0'
+ }
+}
+
+// Make our lives easier by automatically downloading the appropriate Android
+// SDK.
+apply plugin: 'android-sdk-manager'
+// It's an Android application.
+apply plugin: 'com.android.application'
+// It's going to use VDL.
+apply plugin: 'io.v.vdl'
+
+repositories {
+ mavenCentral()
+}
+
+android {
+ compileSdkVersion 23
+ buildToolsVersion "23.0.1"
+
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_7
+ targetCompatibility JavaVersion.VERSION_1_7
+ }
+ packagingOptions {
+ exclude 'META-INF/LICENSE.txt'
+ exclude 'META-INF/NOTICE.txt'
+ }
+
+ defaultConfig {
+ applicationId "io.v.pingpongapp"
+ minSdkVersion 22
+ targetSdkVersion 23
+ versionCode 1
+ versionName "1.0"
+ // Enabling multidex support.
+ multiDexEnabled true
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+}
+
+dependencies {
+ compile fileTree(dir: 'libs', include: ['*.jar'])
+ compile 'com.android.support:appcompat-v7:23.0.1'
+ compile 'com.android.support:design:23.0.1'
+ compile 'io.v:vanadium-android:1.11+'
+}
+
+vdl {
+ // This is where the VDL tool will look for VDL definitions.
+ inputPaths += 'src/main/java'
+}
diff --git a/projects/syncpingpong/PingPongApp/app/proguard-rules.pro b/projects/syncpingpong/PingPongApp/app/proguard-rules.pro
new file mode 100644
index 0000000..fd89494
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/proguard-rules.pro
@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /usr/local/google/home/alexfandrianto/Documents/veyron_root/environment/android/android-sdk-linux/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
diff --git a/projects/syncpingpong/PingPongApp/app/src/androidTest/java/io/v/pingpongapp/ApplicationTest.java b/projects/syncpingpong/PingPongApp/app/src/androidTest/java/io/v/pingpongapp/ApplicationTest.java
new file mode 100644
index 0000000..1e2e6e9
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/androidTest/java/io/v/pingpongapp/ApplicationTest.java
@@ -0,0 +1,17 @@
+// Copyright 2016 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package io.v.pingpongapp;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+ public ApplicationTest() {
+ super(Application.class);
+ }
+}
\ No newline at end of file
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/AndroidManifest.xml b/projects/syncpingpong/PingPongApp/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..b94fadc
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/AndroidManifest.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="io.v.pingpongapp">
+
+ <!-- Needed to store blessings and photos. -->
+ <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+
+ <uses-permission android:name="android.permission.GET_ACCOUNTS" />
+ <uses-permission android:name="android.permission.USE_CREDENTIALS" />
+
+ <!-- Read the user's name from contacts so we can display it with the question. -->
+ <uses-permission android:name="android.permission.READ_PROFILE" />
+ <uses-permission android:name="android.permission.READ_CONTACTS" />
+
+ <application
+ android:allowBackup="true"
+ android:icon="@mipmap/ic_launcher"
+ android:label="@string/app_name"
+ android:supportsRtl="true"
+ android:theme="@style/AppTheme">
+ <activity
+ android:name="MainActivity"
+ android:label="@string/app_name"
+ android:theme="@style/AppTheme.NoActionBar">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+
+</manifest>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/java/io/v/pingpongapp/MainActivity.java b/projects/syncpingpong/PingPongApp/app/src/main/java/io/v/pingpongapp/MainActivity.java
new file mode 100644
index 0000000..9d9c742
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/java/io/v/pingpongapp/MainActivity.java
@@ -0,0 +1,368 @@
+// Copyright 2016 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package io.v.pingpongapp;
+
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.util.concurrent.FutureCallback;
+import com.google.common.util.concurrent.Futures;
+
+import java.util.Arrays;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import io.v.android.libs.security.BlessingsManager;
+import io.v.android.v23.V;
+import io.v.impl.google.services.syncbase.SyncbaseServer;
+import io.v.v23.InputChannels;
+import io.v.v23.OptionDefs;
+import io.v.v23.Options;
+import io.v.v23.VIterable;
+import io.v.v23.context.VContext;
+import io.v.v23.rpc.Server;
+import io.v.v23.security.BlessingPattern;
+import io.v.v23.security.Blessings;
+import io.v.v23.security.access.AccessList;
+import io.v.v23.security.access.Constants;
+import io.v.v23.security.access.Permissions;
+import io.v.v23.services.syncbase.nosql.SyncgroupMemberInfo;
+import io.v.v23.services.syncbase.nosql.SyncgroupSpec;
+import io.v.v23.services.syncbase.nosql.TableRow;
+import io.v.v23.syncbase.Syncbase;
+import io.v.v23.syncbase.SyncbaseApp;
+import io.v.v23.syncbase.SyncbaseService;
+import io.v.v23.syncbase.nosql.Database;
+import io.v.v23.syncbase.nosql.Syncgroup;
+import io.v.v23.syncbase.nosql.Table;
+import io.v.v23.syncbase.nosql.WatchChange;
+import io.v.v23.verror.VException;
+import io.v.v23.vom.VomUtil;
+
+import static io.v.v23.VFutures.sync;
+
+public class MainActivity extends AppCompatActivity {
+ // Syncgroup-related names for where the mounttable is and the syncgroup name's suffix.
+ public static final String mtPrefix = "/ns.dev.v.io:8101/tmp/benchmark/pingpong/";
+ public static final String sgSuffix = "/s0/%%sync/sg";
+
+ // Syncbase-related names for the app/db/tb hierarchy and where to write data.
+ public static final String appName = "app";
+ public static final String dbName = "db";
+ public static final String tbName = "table";
+ public static final String syncPrefix = "prefix";
+
+ // Allow each asynchronous operation to take at most this amount of time.
+ private static final long TEST_TIMEOUT = 5;
+ private static final TimeUnit TEST_TIMEUNIT = TimeUnit.SECONDS;
+
+ // Fixed parameters for the app.
+ private static final String TAG = "PingPong"; // Debug tag for Log.d
+ private static final String testID = "AndroidPingPongTest";
+ private static final int numPeers = 2;
+ private static final int numTimes = 100;
+ // Log success/failure once blessings are received.
+ private static final FutureCallback<Blessings> ON_BLESSINGS = new FutureCallback<Blessings>() {
+ @Override
+ public void onSuccess(Blessings b) {
+ Log.d(TAG, "Got blessings!");
+ }
+
+ @Override
+ public void onFailure(Throwable t) {
+ Log.d(TAG, "Failure to get blessings, nothing will work.", t);
+ }
+ };
+ // The V context tracked by the app.
+ VContext baseContext;
+ // Values that can be changed by the app.
+ private int peerID = 0;
+ private Thread testThread;
+ private boolean usingProxy = false;
+
+ public static Permissions openPermissions() {
+ AccessList acl = new AccessList(
+ ImmutableList.of(new BlessingPattern("...")), ImmutableList.<String>of());
+ return new Permissions(ImmutableMap.of(
+ Constants.RESOLVE.getValue(), acl,
+ Constants.DEBUG.getValue(), acl,
+ Constants.READ.getValue(), acl,
+ Constants.WRITE.getValue(), acl,
+ Constants.ADMIN.getValue(), acl));
+ }
+
+ private String getMountPoint(String testID, int peerID) {
+ return mtPrefix + testID + "/s" + peerID;
+ }
+
+ private String getSyncgroupName(String testID) {
+ return mtPrefix + testID + sgSuffix;
+ }
+
+ // Helper to show default text before the test starts.
+ private void setPreTestText() {
+ String suffix = usingProxy ? " with proxy" : " w/o proxy";
+ String prefix = peerID == 0 ? "Pinger: Hello World!" : "Ponger: Hello World!";
+ updateText(prefix + suffix);
+ }
+
+ // Helper to change the text shown by the debug TextView.
+ private void updateText(String data) {
+ TextView tv = (TextView) findViewById(R.id.debug_text);
+ tv.setText(data);
+ }
+
+ // Callback (from button press). Changes the text color between pinger and ponger.
+ public void pingpongToggle(View view) {
+ if (testThread == null) {
+ Log.d(TAG, "Toggling peer ID!");
+ peerID = 1 - peerID;
+ setPreTestText();
+ TextView tv = (TextView) findViewById(R.id.debug_text);
+ tv.setTextColor(peerID == 0 ? Color.BLACK : Color.BLUE);
+ }
+ }
+
+ // Callback (from button press). If not pressed yet, the proxy will be added to the listen spec.
+ public void useProxy(View view) {
+ // If we don't proxy, we can't communicate across networks.
+ if (!usingProxy) {
+ Log.d(TAG, "Using the proxy!");
+ try {
+ baseContext = V.withListenSpec(baseContext,
+ V.getListenSpec(baseContext).withProxy("proxy"));
+ usingProxy = true;
+ setPreTestText();
+ ((Button) findViewById(R.id.useproxybutton)).setText("Using the Proxy");
+
+ } catch (final VException e) {
+ Log.d(TAG, e.toString());
+ }
+ }
+ }
+
+ // Prepares an asynchronous fetch of blessings using the user account.
+ // On some Android versions, this will open an account picker.
+ private void setUpBlessings() {
+ Log.d(TAG, "Attempting to get blessings.");
+
+ Futures.addCallback(BlessingsManager.getBlessings(baseContext, this, "BlessingsKey", true),
+ ON_BLESSINGS);
+ }
+
+ // Folder where Syncbase will store its data.
+ private String getDataDir() {
+ return getApplicationContext().getApplicationInfo().dataDir + "/" + testID;
+ }
+
+ /**
+ * Callback (from button press). If the test hasn't run yet, starts the test.
+ * The protocol is:
+ * 1. Create app hierarchy.
+ * 2. Create syncgroup if pinger, else as ponger, join the syncgroup.
+ * 3. If pinger, write some data to the store.
+ * 4. Watch from the beginning of time. This watch loop will have the pinger write on odd watch
+ * changes. and the ponger write when it sees even watch changes.
+ * 5. After enough watches have been seen, the watch loop ends, and the statistics are printed.
+ * The start time and end time are set during the watch loop.
+ * We allow 1 round of free sync in order to initialize before the start time is recorded.
+ *
+ * @param view
+ */
+ public void startTestPingPong(final View view) {
+ if (testThread == null) {
+ ((Button) findViewById(R.id.pingpongbutton)).setText("Running Ping Pong!");
+
+ Log.d(TAG, "Starting Syncbase Ping Pong Test!");
+ testThread = new Thread() {
+ long startTime;
+ long endTime;
+
+ // Count starts at -2. (The first ping and first pong are not counted in the test.)
+ int count = -2;
+
+ @Override
+ public void run() {
+ try {
+ testPingPong();
+ } catch (ExecutionException | InterruptedException | TimeoutException |
+ VException e) {
+ Log.d(TAG, e.toString());
+ baseContext.cancel();
+ }
+ }
+
+ public void testPingPong() throws InterruptedException, ExecutionException,
+ TimeoutException, VException {
+
+ Log.d(TAG, "Preparing Syncbase Server");
+ helpUpdateText("Preparing Syncbase Server");
+
+ // Create the syncbase server...
+ try {
+ baseContext = SyncbaseServer.withNewServer(baseContext,
+ new SyncbaseServer.Params()
+ .withPermissions(openPermissions())
+ .withStorageRootDir(getDataDir())
+ .withName(getMountPoint(testID, peerID)));
+ } catch (SyncbaseServer.StartException e) {
+ Log.d(TAG, e.toString());
+ }
+
+ Server syncbaseServer = io.v.v23.V.getServer(baseContext);
+
+
+ Log.d(TAG, "Preparing Syncbase Client");
+ helpUpdateText("Preparing Syncbase Client");
+
+ Log.d(TAG, Arrays.toString(syncbaseServer.getStatus().getEndpoints()));
+
+ // And the syncbase client, app, db, and table...
+ SyncbaseService service = Syncbase.newService(
+ "/" + syncbaseServer.getStatus().getEndpoints()[0]);
+
+ SyncbaseApp app = service.getApp(appName);
+ final Database db = app.getNoSqlDatabase(dbName, null);
+ final Table tb = db.getTable(tbName);
+ Log.d(TAG, "app exists?");
+ if (!syncWithTimeout(app.exists(baseContext))) {
+ Log.d(TAG, "app create");
+ syncWithTimeout(app.create(baseContext, openPermissions()));
+ }
+ Log.d(TAG, "db exists?");
+ if (!syncWithTimeout(db.exists(baseContext))) {
+ Log.d(TAG, "db create");
+ syncWithTimeout(db.create(baseContext, openPermissions()));
+ }
+ Log.d(TAG, "tb exists?");
+ if (!syncWithTimeout(tb.exists(baseContext))) {
+ Log.d(TAG, "tb create");
+ syncWithTimeout(tb.create(baseContext, openPermissions()));
+ }
+
+ Log.d(TAG, "I am peer " + peerID);
+ helpUpdateText("I am peer " + peerID);
+
+ // If you're peer 0, you should create the syncgroup. Otherwise, join it.
+ String sgName = getSyncgroupName(testID);
+ String mtPointName = mtPrefix + "/" + testID;
+ Syncgroup group = db.getSyncgroup(sgName);
+
+ SyncgroupMemberInfo memberInfo = new SyncgroupMemberInfo();
+ memberInfo.setSyncPriority((byte) 3);
+ if (peerID == 0) {
+ Log.d(TAG, "Creating Syncgroup" + sgName);
+ helpUpdateText("Creating Syncgroup");
+
+ SyncgroupSpec spec = new SyncgroupSpec(
+ testID, openPermissions(),
+ ImmutableList.of(new TableRow(tbName, syncPrefix)),
+ ImmutableList.of(mtPointName), false);
+ syncWithTimeout(group.create(baseContext, spec, memberInfo));
+ } else {
+ Log.d(TAG, "Joining Syncgroup" + sgName);
+ helpUpdateText("Joining Syncgroup");
+ syncWithTimeout(group.join(baseContext, memberInfo));
+ }
+
+ // Now that we've all joined the syncgroup...
+ // We should synchronize our times.
+ Log.d(TAG, "We are now ready to time sync!");
+ helpUpdateText("We are now ready to time sync!");
+
+ // 0 will send to 1, and 1 responds via watch.
+ if (peerID == 0) {
+ writeData(tb);
+ }
+
+ watchForChanges(db, tb);
+
+ Log.d(TAG, "We finished!");
+ helpUpdateText("We finished!");
+ double delta = (endTime - startTime) / (numTimes * 1000000.);
+ Log.d(TAG, "Average Time: " + delta + " ms per ping pong iteration\n");
+ helpUpdateText("Average Time: " + delta + "ms per ping pong iteration!");
+ }
+
+ // Posts an action through the view to be run on the main thread.
+ // This is the only way we're allowed to change the UI from this Thread.
+ private void helpUpdateText(final String t) {
+ view.post(new Runnable() {
+ @Override
+ public void run() {
+ updateText(t);
+ }
+ });
+ }
+
+ private void watchForChanges(Database db, Table tb) {
+ try {
+ VIterable<WatchChange> watchStream = InputChannels.asIterable(
+ db.watch(baseContext, tbName, syncPrefix)
+ );
+
+ Log.d(TAG, "Starting watch");
+ // 0 will send to 1, and vice versa.
+ for (final WatchChange wc : watchStream) {
+ String key = wc.getRowName();
+ String value = VomUtil.bytesToHexString(wc.getVomValue());
+ Log.d(TAG, "Watch: " + key + " " + value);
+ helpUpdateText("Watch: " + key + " " + value);
+ count++;
+
+ if (count == 0) {
+ startTime = System.nanoTime();
+ }
+ if (count == numTimes * 2) {
+ endTime = System.nanoTime();
+ break;
+ }
+ if ((count + 2) % 2 == peerID) {
+ writeData(tb);
+ }
+ }
+ Log.d(TAG, "Exiting watch");
+ } catch (TimeoutException | VException ve) {
+ Log.e(TAG, ve.toString());
+ }
+ }
+
+ private void writeData(Table tb) throws VException, TimeoutException {
+ String actualKey = syncPrefix + "/" + count;
+ Log.d(TAG, "I write " + count);
+ syncWithTimeout(tb.put(baseContext, actualKey, count, Integer.class));
+ }
+ };
+ testThread.start();
+ }
+ }
+
+ private <T> T syncWithTimeout(Future<T> f) throws TimeoutException, VException {
+ return sync(f, TEST_TIMEOUT, TEST_TIMEUNIT);
+ }
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.content_main);
+
+ // Initialize Vanadium as soon as we can.
+ baseContext = V.init(getApplicationContext(), new Options()
+ .set(OptionDefs.LOG_VLEVEL, 0)
+ .set(OptionDefs.LOG_VMODULE, "vsync*=2"));
+
+ // We also need (trusted) blessings in order to be able to communicate with others.
+ setUpBlessings();
+ }
+}
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/layout/content_main.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/layout/content_main.xml
new file mode 100644
index 0000000..5e5b1b0
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/layout/content_main.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:app="http://schemas.android.com/apk/res-auto"
+ xmlns:tools="http://schemas.android.com/tools"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:paddingBottom="@dimen/activity_vertical_margin"
+ android:paddingLeft="@dimen/activity_horizontal_margin"
+ android:paddingRight="@dimen/activity_horizontal_margin"
+ android:paddingTop="@dimen/activity_vertical_margin"
+ app:layout_behavior="@string/appbar_scrolling_view_behavior"
+ tools:context="io.v.pingpongapp.MainActivity">
+
+ <LinearLayout
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:orientation="vertical">
+ <TextView
+ android:id="@+id/debug_text"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:text="Pinger: Hello World!" />
+
+ <Button
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"
+ android:text="@string/pingpongtoggle"
+ android:onClick="pingpongToggle" />
+
+ <Button
+ android:id="@+id/useproxybutton"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"
+ android:text="@string/useproxybutton"
+ android:onClick="useProxy" />
+
+ <Button
+ android:id="@+id/pingpongbutton"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"
+ android:text="@string/pingpongbegin"
+ android:onClick="startTestPingPong" />
+ </LinearLayout>
+
+
+</RelativeLayout>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/menu/menu_main.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/menu/menu_main.xml
new file mode 100644
index 0000000..a85d27e
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/menu/menu_main.xml
@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:app="http://schemas.android.com/apk/res-auto"
+ xmlns:tools="http://schemas.android.com/tools"
+ tools:context="io.v.pingpongapp.MainActivity">
+ <item
+ android:id="@+id/action_settings"
+ android:orderInCategory="100"
+ android:title="@string/action_settings"
+ app:showAsAction="never" />
+</menu>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-hdpi/ic_launcher.png b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..cde69bc
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-hdpi/ic_launcher.png
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-mdpi/ic_launcher.png b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..c133a0c
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-mdpi/ic_launcher.png
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..bfa42f0
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xhdpi/ic_launcher.png
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..324e72c
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..aee44e1
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values-v21/styles.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values-v21/styles.xml
new file mode 100644
index 0000000..251fb9f
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values-v21/styles.xml
@@ -0,0 +1,9 @@
+<resources>>
+
+ <style name="AppTheme.NoActionBar">
+ <item name="windowActionBar">false</item>
+ <item name="windowNoTitle">true</item>
+ <item name="android:windowDrawsSystemBarBackgrounds">true</item>
+ <item name="android:statusBarColor">@android:color/transparent</item>
+ </style>
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values-w820dp/dimens.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values-w820dp/dimens.xml
new file mode 100644
index 0000000..63fc816
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values-w820dp/dimens.xml
@@ -0,0 +1,6 @@
+<resources>
+ <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+ (such as screen margins) for screens with more than 820dp of available width. This
+ would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+ <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values/colors.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..3ab3e9c
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+ <color name="colorPrimary">#3F51B5</color>
+ <color name="colorPrimaryDark">#303F9F</color>
+ <color name="colorAccent">#FF4081</color>
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values/dimens.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..812cb7b
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values/dimens.xml
@@ -0,0 +1,6 @@
+<resources>
+ <!-- Default screen margins, per the Android Design guidelines. -->
+ <dimen name="activity_horizontal_margin">16dp</dimen>
+ <dimen name="activity_vertical_margin">16dp</dimen>
+ <dimen name="fab_margin">16dp</dimen>
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values/strings.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..bb2a1bf
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values/strings.xml
@@ -0,0 +1,8 @@
+<resources>
+ <string name="app_name">PingPongApp</string>
+ <string name="action_settings">Settings</string>
+ <string name="appbar_scrolling_view_behavior">android.support.design.widget.AppBarLayout$ScrollingViewBehavior</string>
+ <string name="pingpongtoggle">Toggle Ping/Pong</string>
+ <string name="pingpongbegin">Start Ping Pong</string>
+ <string name="useproxybutton">Use Proxy</string>
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/main/res/values/styles.xml b/projects/syncpingpong/PingPongApp/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..545b9c6
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/main/res/values/styles.xml
@@ -0,0 +1,20 @@
+<resources>
+
+ <!-- Base application theme. -->
+ <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+ <!-- Customize your theme here. -->
+ <item name="colorPrimary">@color/colorPrimary</item>
+ <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+ <item name="colorAccent">@color/colorAccent</item>
+ </style>
+
+ <style name="AppTheme.NoActionBar">
+ <item name="windowActionBar">false</item>
+ <item name="windowNoTitle">true</item>
+ </style>
+
+ <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+ <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+
+</resources>
diff --git a/projects/syncpingpong/PingPongApp/app/src/test/java/io/v/pingpongapp/ExampleUnitTest.java b/projects/syncpingpong/PingPongApp/app/src/test/java/io/v/pingpongapp/ExampleUnitTest.java
new file mode 100644
index 0000000..c1f80b7
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/app/src/test/java/io/v/pingpongapp/ExampleUnitTest.java
@@ -0,0 +1,19 @@
+// Copyright 2016 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package io.v.pingpongapp;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * To work on unit tests, switch the Test Artifact in the Build Variants view.
+ */
+public class ExampleUnitTest {
+ @Test
+ public void addition_isCorrect() throws Exception {
+ assertEquals(4, 2 + 2);
+ }
+}
\ No newline at end of file
diff --git a/projects/syncpingpong/PingPongApp/build.gradle b/projects/syncpingpong/PingPongApp/build.gradle
new file mode 100644
index 0000000..a6fcfe1
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/build.gradle
@@ -0,0 +1,19 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+ repositories {
+ jcenter()
+ }
+ dependencies {
+ classpath 'com.android.tools.build:gradle:1.5.0'
+
+ // NOTE: Do not place your application dependencies here; they belong
+ // in the individual module build.gradle files
+ }
+}
+
+allprojects {
+ repositories {
+ jcenter()
+ }
+}
diff --git a/projects/syncpingpong/PingPongApp/gradle.properties b/projects/syncpingpong/PingPongApp/gradle.properties
new file mode 100644
index 0000000..1d3591c
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/gradle.properties
@@ -0,0 +1,18 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+# Default value: -Xmx10248m -XX:MaxPermSize=256m
+# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
\ No newline at end of file
diff --git a/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.jar b/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..05ef575
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.properties b/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..f23df6e
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Oct 21 11:34:03 PDT 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
diff --git a/projects/syncpingpong/PingPongApp/gradlew b/projects/syncpingpong/PingPongApp/gradlew
new file mode 100755
index 0000000..9d82f78
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/gradlew
@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+ echo "$*"
+}
+
+die ( ) {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+ JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/projects/syncpingpong/PingPongApp/gradlew.bat b/projects/syncpingpong/PingPongApp/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/projects/syncpingpong/PingPongApp/settings.gradle b/projects/syncpingpong/PingPongApp/settings.gradle
new file mode 100644
index 0000000..e7b4def
--- /dev/null
+++ b/projects/syncpingpong/PingPongApp/settings.gradle
@@ -0,0 +1 @@
+include ':app'
