@ -34,4 +34,7 @@ We've built a special background service that pairs the ZeroTier protocol with a
- Provides an integrated SOCKS5 server alongside the ZeroTier service to proxy connections from an application to resources on a ZeroTier network. For instance, a developer which has built an iOS app using the NSStreams API could add ZeroTier to their application and simply use the SOCKS5 support build into NSStreams to reach resources on their network. An Android developer could do the same using the SOCKS5 support provided in the `Socket` API.
**Direct Call**
- Directly call the `zt_/zts_` API specified in [SDK.h](src/SDK.h). For this to work, just use one of the provided headers that specify the interface for your system/architecture and then either dynamically-load our library into your app or compile it right in.
- Directly call the `zt_` API specified in [SDK.h](src/SDK.h). For this to work, just use one of the provided headers that specify the interface for your system/architecture and then either dynamically-load our library into your app or compile it right in.
Imagine a flat, encrypted, no-configuration LAN for all of the instances of your Android app.
Imagine a flat, encrypted, no-configuration LAN for all of the instances of your Android app. This short tutorial will show you how to enable ZeroTier functionality for your Android app with little to no code modification. Check out our [ZeroTier SDK](https://www.zerotier.com/blog) page for more info on how the integration works. In this example we aim to set up a minimal [Android Studio](https://developer.android.com/studio/index.html) project which contains all of the components necessary to enable ZeroTier for your app.
This short tutorial will show you how to enable ZeroTier functionality for your Android app with little to no code modification. Check out our [ZeroTier SDK](https://www.zerotier.com/blog) page for more info on how the integration works and [Shim Techniques](https://www.zerotier.com/blog) for a discussion of shims available for your app/technology.
*NOTE: For Android JNI libraries to build you'll need to install [Android Studio](https://developer.android.com/studio/index.html) the [Android NDK](https://developer.android.com/ndk/index.html). Currently only Android NDK r10e is supported and can be found [here for OSX](http://dl.google.com/android/repository/android-ndk-r10e-darwin-x86_64.zip) and [here for Linux](http://dl.google.com/android/repository/android-ndk-r10e-linux-x86_64.zip). You'll need to tell our project where you put it by putting the path in [this file](android/proj/local.properties), you'll need to install the Android Build-Tools (this can typically be done through the editor the first time you start it up), and finally you should probably upgrade your Gradle plugin if it asks you to. If you don't have these things installed and configured we will detect that and just skip those builds automatically.*
In this example we aim to set up a minimal [Android Studio](https://developer.android.com/studio/index.html) project which contains all of the components necessary to enable ZeroTier for your app. If you'd rather skip all of these steps and grab the code, look in the [sdk/android](https://github.com/zerotier/ZeroTierOne/tree/dev/sdk/integrations/android/example_app) folder in the source tree. Otherwise, let's get started!
*NOTE: For Android JNI libraries to build you'll need to install [Android Studio](https://developer.android.com/studio/index.html) the [Android NDK](https://developer.android.com/ndk/index.html). Currently only Android NDK r10e is supported and can be found [here for OSX](http://dl.google.com/android/repository/android-ndk-r10e-darwin-x86_64.zip) and [here for Linux](http://dl.google.com/android/repository/android-ndk-r10e-linux-x86_64.zip). You'll need to tell our project where you put it by putting the path in [this file](Android/proj/local.properties), you'll need to install the Android Build-Tools (this can typically be done through the editor the first time you start it up), and finally you should probably upgrade your Gradle plugin if it asks you to. If you don't have these things installed and configured we will detect that and just skip those builds automatically.*
If you want to skip these steps and just take a look at the project, go [here](example_app).
***
**Step 1: Select build targets**
- Specify the target architectures you want to build in [Application.mk](android/java/jni/Application.mk). By default it will build `arm64-v8a`, `armeabi`, `armeabi-v7a`, `mips`, `mips64`, `x86`, and `x86_64`.
@ -18,7 +17,16 @@ In this example we aim to set up a minimal [Android Studio](https://developer.an
- `make android_jni_lib`
- The resultant `build/android_jni_lib_YOUR_ARCH/libZeroTierOneJNI.so` is what you want to import into your own project to provide the API to your app. Select your architecture and copy the shared library into your project's JNI directory, possibly `/src/main/jniLibs/YOUR_ARCH/`. Selecting only the architectures you need will *significantly* reduce overall build time.
**Step 3: App Code Modifications**
**Step 3: App permissions**
- In order for your application to write the auth keys and network files to the internal storage you'll need to set a few permissions in your `AndroidManifest.xml` file at the same scope level as `<application>`:
- Create new package called `ZeroTierSDK` in your project and add a new file called `ZeroTierSDK.java` containing:
```
@ -32,35 +40,32 @@ public class ZeroTierSDK {
}
```
- And now, start the service in your app with:
- Start the service
```
final SDK zt = new SDK();
final String homeDir = getApplicationContext().getFilesDir() + "/zerotier";
new Thread(new Runnable() {
public void run() {
ZeroTierSDK wrapper = new ZeroTierSDK();
wrapper.startOneService(); // Calls to JNI code
}
public void run() {
// Calls to JNI code
zt.startOneService(homeDir);
}
}).start();
```
**Step 4: App permissions**
- Join network and perform network call
- In order for your application to write the auth keys and network files to the internal storage you'll need to set a few permissions in your `AndroidManifest.xml` file at the same scope level as `<application>`:
- If functional interposition isn't available for the API or library you've chosen to use, ZeroTier offers a SOCKS5 proxy server which can allow connectivity to your virtual network as long as your client API supports the SOCKS5 protocol. This proxy service will run alongside the tap service and can be turned on by compiling with the `-DUSE_SOCKS_PROXY` flag. By default, the proxy service is available at `0.0.0.0:1337`.
Joseph Henry
10 years ago
