sharee.bike-App/SharedBusinessLogic/Repository/Exception/WebExceptionHelper.cs

using System.Net;

namespace ShareeBike.Repository.Exception
{
	public static class WebExceptionHelper
	{
		/// <summary> Gets if a exception is caused by an error connecting to copri (LAN or mobile data off/ not reachable, proxy, ...).</summary>
		/// <param name="exception">Expection to check.</param>
		/// <returns>True if exception if caused by an connection error. </returns>
		public static bool GetIsConnectFailureException(this System.Exception exception)
		{
#if !USCSHARP9
			if (!(exception is WebException webException))
#else
            if (exception is not WebException webException)
#endif
			{
				return false;
			}

			return webException.Status == WebExceptionStatus.ConnectFailure // Happens if WLAN and mobile data is off/ Router denies internet access/ ...
				|| webException.Status == WebExceptionStatus.NameResolutionFailure // Happens sometimes when not WLAN and no mobil connection are available (bad connection in lift).
				|| webException.Status == WebExceptionStatus.ReceiveFailure; // Happened when mobile was connected to WLAN
		}

		/// <summary> Gets if a exception is caused by clicking too fast.</summary>
		/// <param name="exception">Expection to check.</param>
		/// <returns>True if exception if caused by a fast click sequence. </returns>
		public static bool GetIsForbiddenException(this System.Exception exception)
		{
#if !USCSHARP9
			if (!(exception is WebException webException))
#else
            if (exception is not WebException webException)
#endif
			{
				return false;
			}

#if !USCSHARP9
			if (!(webException?.Response is HttpWebResponse response))
#else
            if (webException?.Response is not HttpWebResponse response)
#endif
			{
				return false;
			}

			return webException.Status == WebExceptionStatus.ProtocolError
				&& response.StatusCode == HttpStatusCode.Forbidden;
		}
	}
}