问题
I'm trying to use my own Python cgi script to store and serve Anchor IDs. Everything worked with the Swagger Sharing Server from the samples repository but somehow when I switch to my Python server I get an Error and the app is stuck looking for the anchor.
What I'm doing is, I assume, exactly the same the Swagger Script does: I send the Anchor ID to the server and return an Anchor number to be able to request the ID later again. As far as I understood the ID needs to be exchanged as a string and that's what I return from my Python server as well (Content-type: text/plain).
However I get following error on my Android when trying to parse the key / look for the Anchor ID once I got it from the server:
Here's the relevant error message from logcat:
04-29 07:33:01.031: I/Unity(28756): (Filename: ./Runtime/Export/Debug.bindings.h Line: 45)
04-29 07:33:02.062: I/Unity(28756): State from DemoStepLookForAnchor to DemoStepLookingForAnchor
04-29 07:33:02.062: I/Unity(28756):
04-29 07:33:02.062: I/Unity(28756): (Filename: ./Runtime/Export/Debug.bindings.h Line: 45)
04-29 07:33:02.141: E/Unity(28756): InvalidOperationException: bad lexical cast: source type value could not be interpreted as target. Request CV: . Response CV: .
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.NativeLibraryHelpers.CheckStatus (System.IntPtr handle, Microsoft.Azure.SpatialAnchors.status value) [0x000cc] in <b52d7a321113460294136f243fd7bd66>:0
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.CloudSpatialAnchorSession.CreateWatcher (Microsoft.Azure.SpatialAnchors.AnchorLocateCriteria criteria) [0x00019] in <b52d7a321113460294136f243fd7bd66>:0
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.Unity.Samples.AzureSpatialAnchorsDemoWrapper.CreateWatcher () [0x00008] in <b52d7a321113460294136f243fd7bd66>:0
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.Unity.Samples.AzureSpatialAnchorsSharedAnchorDemoScript.AdvanceLocateFlowDemo () [0x00090] in <b52d7a321113460294136f243fd7bd66>:0
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.Unity.Samples.AzureSpatialAnchorsSharedAnchorDemoScript.AdvanceDemo () [0x00018] in <b52d7a321113460294136f243fd7bd66>:0
04-29 07:33:02.141: E/Unity(28756): at Microsoft.Azure.SpatialAnchors.Unity.
What could be wrong? Many thanks in advance!
来源：https://stackoverflow.com/questions/55929296/using-a-custom-web-server-for-sharing-anchor-ids-doesnt-work