Automatically forward port 8082 for Android

Fixes #249

examples/ReactExample/run-android.sh

@@ -8,6 +8,5 @@ PATH="/opt/android-sdk-linux/platform-tools:$PATH"
 npm install realm
 
 adb reverse tcp:8081 tcp:8081
-adb forward tcp:8082 tcp:8082
 
 react-native run-android

examples/ReactNativeBenchmarks/run-android.sh

@@ -8,6 +8,5 @@ PATH="/opt/android-sdk-linux/platform-tools:$PATH"
 npm install realm
 
 adb reverse tcp:8081 tcp:8081
-adb forward tcp:8082 tcp:8082
 
 react-native run-android

react-native/android/publish_android_template

@@ -16,6 +16,24 @@ allprojects {
 
 apply plugin: 'com.android.library'
 
+task forwardDebugPort(type: Exec) {
+    commandLine 'adb', 'forward', 'tcp:8082', 'tcp:8082'
+    ignoreExitValue true
+    doLast {
+        if (execResult.getExitValue() != 0) {
+            logger.error(
+                '===========================================================================\n' +
+                'WARNING: Failed to automatically forward port 8082.\n' +
+                'In order to use Realm in Chrome debugging mode, port 8082 must be forwarded\n' +
+                'from localhost to the device or emulator being used to run the application.\n' +
+                'You may need to add the appropriate flags to the command that failed:\n' +
+                '    adb forward tcp:8082 tcp:8082\n' +
+                '===========================================================================\n'
+            )
+        }
+    }
+}
+
 android {
     compileSdkVersion 23
     buildToolsVersion "23.0.1"
@@ -24,6 +42,10 @@ android {
         minSdkVersion 16
         targetSdkVersion 22
     }
+
+    tasks.withType(JavaCompile) {
+        compileTask -> compileTask.dependsOn forwardDebugPort
+    }
 }
 
 dependencies {

tests/react-test-app/run-android.sh

@@ -11,7 +11,8 @@ cp ../../src/object-store/parser/queryTests.json node_modules/realm-tests/query-
 
 echo "Reversing port for physical device"
 adb reverse tcp:8081 tcp:8081
-adb forward tcp:8082 tcp:8082
+
 react-native run-android
+
 echo "Unlocking device"
 adb shell input keyevent 82