full internal exeption which i got is : A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. i am getting this error in azure notification hub. some time code run smoothly but sometime gives this error for following operation
await hub.CreateOrUpdateInstallationAsync(installation); await hub.PatchInstallationAsync(Id, updates);
here hub=NotificationHubClient.CreateClientFromConnectionString("","")