Attempting to fix range problems

Author: Eduardo Fernandes

src/android/com/ionicframework/cordova/webview/WebViewLocalServer.java

@@ -218,6 +218,10 @@ private static WebResourceResponse createWebResourceResponse(String mimeType, St
    * @return a response if the request URL had a matching handler, null if no handler was found.
    */
   public WebResourceResponse shouldInterceptRequest(Uri uri, WebResourceRequest request) {
+      if(isLocalProxySource(uri)) {
+        return handleLocalProxyRequest(uri, request);
+      }
+
     PathHandler handler;
     synchronized (uriMatcher) {
       handler = (PathHandler) uriMatcher.match(uri);
@@ -260,26 +264,67 @@ private WebResourceResponse handleLocalProxyRequest(Uri uri, WebResourceRequest
         URL httpsUrl = new URL(fixedUri);
         URLConnection connection = httpsUrl.openConnection();
         HttpURLConnection httpConnection = (HttpURLConnection)connection;
+        InputStream responseStream = connection.getInputStream();
 
-        httpConnection.setRequestMethod(request.getMethod());
-        for (Map.Entry<String, String> entry : request.getRequestHeaders().entrySet()) {
-            httpConnection.setRequestProperty(entry.getKey(), entry.getValue());
-        }
-
-        httpConnection.connect();
-
-        // Pass them trough (Convert String,List<String> to String,String)
         Map<String, String> headers = new HashMap<String, String>();
         for (Map.Entry<String, List<String>> entry : connection.getHeaderFields().entrySet()) {
-            headers.put(entry.getKey(), entry.getValue().get(0));
+            String key = entry.getKey();
+            headers.put(key, entry.getValue().get(0));
         }
 
+        int code = httpConnection.getResponseCode();
+        if(request != null && request.getRequestHeaders().get("Range") != null) {
+            String rangeString = request.getRequestHeaders().get("Range");
+            int contentLength = 0;
+
+            if(responseStream.available() <= 0){
+                contentLength = Integer.parseInt(headers.get("Content-Length"));
+            } else {
+                contentLength = responseStream.available();
+            }
+
+            String[] parts = rangeString.split("=");
+            String[] streamParts = parts[1].split("-");
+            String fromRange = streamParts[0];
+            int range = contentLength - 1;
+
+            headers.put("Accept-Ranges", "bytes");
+            //headers.put("Content-Length", headers.get("Content-Length"));
+            headers.put("Content-Range", "bytes " + fromRange + "-" + range + "/" + contentLength);
+
+            /*
+            int contentLength = Integer.parseInt(contentStr[1]);
+            String[] parts = rangeString.split("=");
+            String[] streamParts = parts[1].split("-");
+            String fromRange = streamParts[0];
+            int range = contentLength - 1;
+
+            headers.put("Accept-Ranges", "bytes");
+            headers.put("Content-Length", contentStr[1]);
+            headers.put("Content-Range", "bytes " + fromRange + "-" + range + "/" + contentLength);*/
+
+            code = 206; // Partial content being served
+            //String[] contentLength = request.getRequestHeaders().get("Content-Length").split(",");
+
+            /*int currentRange = Integer.parseInt(rangeString.split("=")[1].replace("-", ""));
+            int totalRange = Integer.parseInt(contentLength[1].trim());
+
+            httpConnection.setRequestProperty("Range", rangeString);
+            //httpConnection.connect();
+
+            headers.put("Content-Length", contentLength[1].trim());
+            headers.put("Content-Range", "bytes " + currentRange + "-" + (totalRange - 1) + "/" + totalRange);*/
+        }
+
         // Bypass CORS
         headers.put("Access-Control-Allow-Origin", "*");
         headers.put("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS");
         headers.put("Access-Control-Allow-Headers", "agent, user-data, Access-Control-Allow-Headers, Origin, Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers");
-        
-        return new WebResourceResponse(connection.getContentType(), connection.getContentEncoding(), httpConnection.getResponseCode(), httpConnection.getResponseMessage(), headers, connection.getInputStream());
+        headers.put("Content-Type", request.getRequestHeaders().get("Content-Type"));
+
+        return new WebResourceResponse(connection.getContentType(), connection.getContentEncoding(), 
+                code, httpConnection.getResponseMessage(), headers, responseStream);
+
     } catch (Exception e) {
         //an error occurred
         return null;