Try to recover from a streaming failure.

Closes #28.

Change-Id: I09df3e2fbb631ca1215e5d44baa9ada67ede9cee

lib/media/stream.js

@@ -647,7 +647,6 @@ shaka.media.Stream.prototype.onUpdate_ = function() {
     // Dispatch a non-bubbling event.  Let the VideoSource handle it.
     var event = shaka.util.FakeEvent.create({ type: 'ended' });
     this.dispatchEvent(event);
-
     return;
   }
 
@@ -682,6 +681,12 @@ shaka.media.Stream.prototype.onUpdate_ = function() {
         if (error.type != 'aborted') {
           var event = shaka.util.FakeEvent.createErrorEvent(error);
           this.dispatchEvent(event);
+
+          if (error.type == 'net' && error.xhr.status == 0) {
+            // Hope to recover soon...
+            this.updateTimerId_ =
+                window.setTimeout(this.onUpdate_.bind(this), 5000);
+          }
         }
       })
   );