Offline map tiles not loading on LAN with no internet connection

[Dom]

I have a project which is using the ArcGIS Unity SDK version 2.0.0, and I'm loading offline map tiles (tpkx files, generated using the ArcGIS Pro desktop app). It works great when the device either has internet connection, or is not connected to any network.

However, when the device is connected to a LAN that does not have wider internet access, the offline map tiles take a long time (30 seconds, sometimes even several minutes) to load.

Some additional potentially relevant information:

• We are instructing ArcGIS to use the offline map tiles by setting `ArcGISMapComponent.Basemap` on initialization of the application
• We are able to reproduce this both in editor, as well as on Android (Arm64) devices

[MichaelBranscomb]

Hi,

Can you share more info about how you were testing a LAN without wider internet access? (to check we can test the same thing... for example, network traffic monitoring tools can simulate network speeds, but in the past we've also seen these change the behavior of the issue we were trying to test) 

Thanks

[Dom]

Sorry for the late reply, it looks like I don't get email notifications for responses to this.

I tried to setup a minimal repro for you, but (despite not having changed anything) I'm not able to consistently repro the issue. I do see a delay in loading the offline map tiles occasionally (it goes from instant to sometimes taking ~5 seconds). The easiest setup is: put your phone in airplane mode or disable data/wifi, enable hotspot, and then connect the device running the application to the hotspot. So the device will be connected to a network without wider internet access.

Again though, despite previously hitting this issue very consistently, I am no longer able to.