I just tested the latest version of ArcGIS for AutoCAD plugin with AutoCad Civil 3d 2015. Secured services from 10.3 ArcGIS Server are not accessible using the plugin.
When adding the ArcGIS Server connection and providing credentials in AutoCAD you get an "Error 405 Method not available" or similar, I can't remember the exact text. I started Fiddler and captured the token request when attempting to sign into Server from Autocad and the plugin is sending a http GET request. This is not compatible with ArcGIS Server 10.3, according to this doc: Acquiring ArcGIS tokens—Documentation | ArcGIS for Server. At the top of that doc, it says "HTTP POST token requests must have username/pw passed in the body of the request, and HTTP GET requests are not supported."
So, it looks like 1 of 3 things has to happen before the latest ArcGIS for AutoCAD plugin will work with Server 10.3 token secured services.
1. the ability to enable http GET requests on Server 10.3. I only found documentation to disable http GET, which doesn't really make sense if it is disabled by default, according to the above doc? Disabling token acquisition through HTTP GET requests—Documentation | ArcGIS for Server. I tried setting "allowHttpGet": "true" in ArcGIS Server admin, but it didn't work.
2. The plugin needs updating so it sends a token request via http POST
3. Write a custom proxy to intercept the plugin's GET request, obtain a token from the server using a POST request, and relaying everything back to the plugin. Likely more trouble then it's worth.
This is the 2nd annoying authentication issue in 10.3 I've found.
ESRI, can you please update us?
thanks.
