Universal Link

Question

chrisjones72521 OP

Created 16h

Replies 2

Boosts 0

Participants 2

Hello,

I'm developing a feature for my app, that allows users to challenge their friends. The friend request functionality is built using Universal Links, but I've run into a significant issue.

The Universal Links are correctly deep-linking into the app. However, once the app opens, nothing happens—the friend request acceptance or rejection flow does not occur. This prevents users from completing friend requests and building their friend list.

Here are examples of the Universal Links I'm generating:

https://www.strike-force.app/invite?type=invite&userID=...

https://www.strike-force.app/invite?type=invite&friendRequestID=...

https://www.strike-force.app/profile?userID=...

I've recently updated my cloudflare-worker.js to serve a paths array of ["*"] in the AASA file, so I believe the links themselves should be valid.

Technical Details & Error Logs

In the console, I am consistently seeing the following error message:

Cannot issue sandbox extension for URL:https://www.strike-force.app/invite?token=7EF1E439-090B-4DF2-BE64-9904F50A3F8B

Received port for identifier response: <(null)> with error:Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false} elapsedCPUTimeForFrontBoard couldn't generate a task port

This error appears to be related to entitlements and process state, but I am not sure if it's the root cause of the Universal Link issue or a separate problem. The 'Client not entitled' error on line 3 has had me chasing down entitlements issues. But, I've added the Associated Domains entitlement with the proper applink URLs and verified this in my Developer Portal. I've regenerated my provisioning profile, manually installed it, and selected/de-selected Automatically Manage Signing. As well I've verified my AASA file and it's correctly being served via HTTPS and returning a 200.

curl -i https://strike-force.app/.well-known/apple-app-site-association

curl -i https://www.strike-force.app/.well-known/apple-app-site-association

I am looking for guidance on why the friend request flow is not being triggered after a successful deep-link and how I can fix the related error. Any insights or suggestions would be greatly appreciated.

Boost

Answer 1

DTS Engineer OP

Apple

9h

This is iOS, right?

once the app opens, nothing happens

So, lemme see if I understand this properly:

The user taps on your link.
It opens your app.
Something goes wrong from there.

Is that right?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0

Answer 2

chrisjones72521 OP

5h

Sorry for omitting these details in my original post.

PLATFORM AND VERSION

iOS

Development environment: Xcode Version 16.4 (16F6), macOS 15.5 (24F74)

Run-time configuration: iOS 18.5

CURRENT BEHAVIOR

When I tap "Add Friends" from my iOS app it generates a unique token and to be shares via Universal Link and displays the share sheet for me to select how I want to share this.

https://www.strike-force.app/invite?token=781E1E89-BEAC-4C5C-B3F1-2EC916566D2C

This is in dev when I build from XCode. If I perform this action from TestFlight, the button is unresponsive. I assume it's because of the errors below.

Cannot issue sandbox extension for URL:https://www.strike-force.app/invite?token=781E1E89-BEAC-4C5C-B3F1-2EC916566D2C
App is being debugged, do not track this hang
Hang detected: 0.37s (debugger attached, not reporting)
Received port for identifier response: <(null)> with error:Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false}
elapsedCPUTimeForFrontBoard couldn't generate a task port
Received port for identifier response: <(null)> with error:Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false}
elapsedCPUTimeForFrontBoard couldn't generate a task port
Received port for identifier response: <(null)> with error:Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false}
elapsedCPUTimeForFrontBoard couldn't generate a task port

So, I've been unable to test if the Universal Link strategy works with my testers in Test Flight. If I click the link myself it just opens my app.

I've implemented Friend Requests two ways. One is a direct linking between friends using a unique token. The other is a generic sharing of the user's profile which then results in a friend request from the person who initiates the request to that user.

https://www.strike-force.app/profile?userID=000773.de39195514404b7b9c60b14a7f1f8048.0122

This produces a similar error.

Cannot issue sandbox extension for URL:https://www.strike-force.app/profile?userID=000773.de39195514404b7b9c60b14a7f1f8048.0122
Received port for identifier response: <(null)> with error:Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false}
elapsedCPUTimeForFrontBoard couldn't generate a task port

0