From c672175b7527d64b077f7715b2ff145325524add Mon Sep 17 00:00:00 2001
From: Dirk Groenen <dirk@bitlabs.nl>
Date: Tue, 14 Apr 2020 17:54:38 +0200
Subject: [PATCH] feat(android): proxy service worker requests through local
 server (#452)

---
 README.md                                         |  9 +++++++++
 .../cordova/webview/IonicWebViewEngine.java       | 15 +++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/README.md b/README.md
index 6f387815..b9bf625f 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,15 @@ Default value is `http`
 
 Configures the Scheme the app uses to load the content.
 
+#### ResolveServiceWorkerRequests
+
+```xml
+<preference name="ResolveServiceWorkerRequests" value="true" />
+```
+
+Default value is `false`
+
+Enable to resolve requests made by Service Workers through the local server.
 
 #### MixedContentMode
 
diff --git a/src/android/com/ionicframework/cordova/webview/IonicWebViewEngine.java b/src/android/com/ionicframework/cordova/webview/IonicWebViewEngine.java
index 81d04978..02bdaf8c 100644
--- a/src/android/com/ionicframework/cordova/webview/IonicWebViewEngine.java
+++ b/src/android/com/ionicframework/cordova/webview/IonicWebViewEngine.java
@@ -10,6 +10,8 @@
 import android.os.Build;
 import android.support.annotation.RequiresApi;
 import android.util.Log;
+import android.webkit.ServiceWorkerController;
+import android.webkit.ServiceWorkerClient;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebSettings;
@@ -80,6 +82,19 @@ public void init(CordovaWebView parentWebView, CordovaInterface cordova, final C
     if (!isDeployDisabled() && !isNewBinary() && path != null && !path.isEmpty()) {
       setServerBasePath(path);
     }
+
+    boolean setAsServiceWorkerClient = preferences.getBoolean("ResolveServiceWorkerRequests", false);
+    ServiceWorkerController controller = null;
+
+    if (setAsServiceWorkerClient && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+        controller = ServiceWorkerController.getInstance();
+        controller.setServiceWorkerClient(new ServiceWorkerClient(){
+            @Override
+            public WebResourceResponse shouldInterceptRequest(WebResourceRequest request) {
+                return localServer.shouldInterceptRequest(request.getUrl(), request);
+            }
+        });
+    }
   }
 
   private boolean isNewBinary() {