topic (iOS) ArcGISPortal.CreateAsync() times out in Airplane Mode in .NET Maps SDK Questions

(iOS) ArcGISPortal.CreateAsync() times out in Airplane Mode

EricLiu — Mon, 30 Mar 2026 23:58:28 GMT

Hello, we have a third-party client whose app is loading slowly when their iPad is in airplane mode. Upon inspecting the logs, it seems that in the app, the call to 'ArcGISPortal.CreateAsync()' is timing out repeatedly.

In Screenshot ... 113032, we see the call go from 'ArcGISPortal.CreateAsync()' to a time out in GetResponseAsync.

In our attempt to reproduce the issue (Screenshot ... 113729), we couldn't get the call to 'ArcGISPortal.CreateAsync()' to time out. Instead it always failed with the exception immediately.

My aim is for all request by the ArcGIS runtime to fail immediately if there's no connection, and never time out. If Esri can spot what's causing the time out it would be awesome. Any troubleshooting steps are also appreciated.

Maui 9.0.120. .NET 9. iOS 26.2+. ArcGIS 200.8.1. Happens on iPad A16 and iPad 9th Gen.

EDIT: Got it to repro. Seems like the iOS device needed to be on a VPN (I was using the Proton VPN app) before the app is terminated and airplane mode turned on. Then once you reopen the app and it calls ArcGISPortal.CreateAsync(), the time out occurs.

Re: (iOS) ArcGISPortal.CreateAsync() times out in Airplane Mode

EricLiu — Mon, 30 Mar 2026 21:55:59 GMT

To add, its possible we were calling ArcGISPortal.CreateAsync() in a loop. The GetResponseAsync() makes me think the ArcGISMessageHandler is using HttpWebRequest (instead of HttpClient) underneath the hood.

https://stackoverflow.com/questions/21903837/httpwebresponse-get-stuck-while-running-in-a-loop. I found this discussion about HttpWebRequest getting stuck. Could it be related ?

Re: (iOS) ArcGISPortal.CreateAsync() times out in Airplane Mode

EricLiu — Mon, 30 Mar 2026 23:52:07 GMT

Nvm it wasn't this.