I am using pushsharp library on server side to generate push notification to android and iOS devices. Everything was working fine earlier and notifications were received. But suddenly I have started receiving following error:
Unknown Transport Error at PushSharp.Android.GcmPushChannel.processResponseError(GcmAsyncParameters asyncParam) at PushSharp.Android.GcmPushChannel.responseCallback(IAsyncResult result)
Push notifications are not being received on mobile devices now.