XSON fails to apply a JSON Patch when run using a Host rewriting proxy

[warpech]

Starcounter version: <2.4.20564.mapping>.

Issue type

• Bug
• Feature request
• Suggestion
• Question
• Cannot reproduce
• Urgent

Issue description

I am using Ngrok to access my Starcounter app (HeadsOmni) using HTTPS. The app expects the hostname to be backoffice.omni.local, so Ngrok is configured to rewrite the Host header to match.

When I access the app using a URI provided by Ngrok (e.q. https://21d03b75.ngrok.io/BlendingEditor) the app renders the login screen OK. However, trying to use the login screen, an exception occurs.

It might be complex to isolate the problem in the complete HeadsOmni project, so I will try to find a simpler isolation of it in a smaller app.

Exception stack trace

"Starcounter.XSON.JsonPatch.JsonPatchException: Unknown namespace in path. Patch: '{""op"":""replace"",""path"":""/_ver#c$"",""value"":2}'. Property: '_ver#c$'. Viewmodel versions: {client (_ver#c$): 1, clients serverversion: 0, server (_ver#s): 0}.
   at Starcounter.XSON.JsonPatch.JsonProperty.EvalutateCurrent(ViewModelVersion version)
   at Starcounter.XSON.Internal.XSONInternals.RunWithinApplication(String appName, Action action)
   at Starcounter.XSON.JsonPatch.JsonProperty.DoEvaluate(Json root)
   at Starcounter.XSON.JsonPatch.JsonProperty.Evaluate(JsonPointer pointer, Json root)
   at Starcounter.XSON.JsonPatch.DefaultPatchHandler.Handle(Json root, JsonPatchOperation patchOp, JsonPointer pointer, String value)
   at Starcounter.XSON.JsonPatch.JsonPatch.HandleOnePatch(Json root, JsonPatchOperation op, JsonPointer ptr, String value, Int32 patchCount, ChangeLog changeLog, Object sourceJson, Boolean strictRejection, JsonPatchStatus previousStatus)
   at Starcounter.XSON.JsonPatch.JsonPatch.Apply(Json root, JsonTextReader reader, Boolean strictPatchRejection, Object sourceJson, Int32& patchCount)
   at Starcounter.XSON.JsonPatch.JsonPatch.Apply(Json root, String patch, Boolean strictPatchRejection, Int32& patchCount)
   at Starcounter.Internal.PuppetRestHandler.<>c.<RegisterJsonPatchHandlers>b__10_2(Request request, Session session) in C:\	c_work\ScMappingNightlyRel-20564\level1\src\Starcounter.Apps.JsonPatch\BuiltInRestHandlers\PuppetRestHandler.cs:line 205
   at lambda_method(Closure , Request , IntPtr , IntPtr )
   at Starcounter.Rest.UserHandlerInfo.RunUserDelegate(Request req, IntPtr methodSpaceUriSpaceOnStack, IntPtr parametersInfoOnStack) in C:\	c_work\ScMappingNightlyRel-20564\level1\src\Starcounter.Rest\UriHandlersManager.cs:line 231
   at Starcounter.Internal.Web.AppRestServer.RunDelegateAndProcessResponse(IntPtr methodSpaceUriSpaceOnStack, IntPtr parametersInfoOnStack, Request req) in C:\	c_work\ScMappingNightlyRel-20564\level1\src\Starcounter.Apps.JsonPatch\AppRestServer.cs:line 89
   at Starcounter.Internal.AppsBootstrapper.ProcessExternalRequest(Request req) in C:\	c_work\ScMappingNightlyRel-20564\level1\src\Starcounter.Apps.JsonPatch\AppsBootstrapper.cs:line 552
Patch={""op"":""replace"",""path"":""/_ver#c$"",""value"":2}
CurrentProperty=_ver#c$
Severity=1
HResult=-2146233088
"

[warpech]

I am getting different errors, but still errors, when trying to use:

• UniformDocs with Ngrok
• HeadsOmni with Serveo (Ngrok alternative), ssh -R 80:backoffice.omni.local:8080 serveo.net

I will continue this investigation in May

[miyconst]

Archiving.