No success here either (SEE UPDATE BELOW). We've updated two iOS apps, gotten Core Spotlight indexing working on the device, but what should be universal links (in Safari or messages) open in Safari and our app is not launched or called.
Two things that seem unclear:
1. What label should be used in the app's com.apple.developer.associated-domain entitlement (as set in Capabilities)? Autofill and the handoff doc use "webcredentials:", but mentions of this on the forum use "applinks:" like the server json file. That doc doesn't say.
2. If the device's on-install reading of the json file is successful, does it print anything in console? I've read that errors are logged to console, but I don't see anything that looks relevant.
UPDATE:
I had success with a fresh start with a new app and site. Now I just have to figure out why our real app and site don't work.
On my test site (which serves http and https from the same folder) I did NOT sign the JSON file ( apple-app-site-association). In my test app (created from scratch with Xcode 7 beta), I added the associated domain entitlements (like applinks:www.aiiee.com) to the app and put the application:continueUserActivity:restorationHandler: method in the app delegate.
@slutsker, your JSON file looks just like mine. The only difference is the path "*" is on a separate line, and the ] after it is on a separate line, more like the example, but I don't think that matters.
I triggered the universal link by adding it to a Contact, so I could just tap it in the Contacts app on the device for testing.
I also tried going to the home page of the site in Mobile Safari, which was interesting: if I go to the site via https (which just opens the page without leaving Safari), tapping any internal link on the page opens my app. But if I go to the site via http, links stay in Safari. In other apps, it doesn't matter if a URL is http or https, both work the same and open my app.
I'm doing the minimum required per the newer doc: https://developer.apple.com/library/prerelease/ios/documentation/General/Conceptual/AppSearch/UniversalLinks.html#//apple_ref/doc/uid/TP40016308-CH12-SW1
The above was with beta 5. I still haven't seen anything relevant in the device console, although I haven't looked very hard.
P.S. Unsurprisingly, the same app did not work in the iOS 9 simulator.