ASWebAuthenticationSession's callbackURLScheme crash

Question

Created Apr ’21

Replies 8

Boosts 0

Views 8.4k

Participants 14

Hi All,

We have started seeing crash with iOS 14.5 for ASWebAuthenticationSession's callbackURLScheme. Is anybody seeing the issue? Is this an intentional change in iOS or a bug?

Code Block AuthenticationSession] The provided scheme is not valid. A scheme should not include special characters such as ":" or "/".
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'The provided scheme is not valid. A scheme should not include special characters such as ":" or "/".'

Regards,
Nimesh

Answered by Systems Engineer in 676913022

ASWebAuthenticationSession does not require any modification in your Info.plist. This exception happens because the value that was passed to callbackURLScheme contained either a ":" or "/" character. In most cases, this means you passed something like myscheme://, which is not valid.

The correct value to pass in this case is just myscheme (no trailing "://").

Boost

Answer 1

v1ad OP

May ’21

Hi, had the same issue.
The solution in my case was to create a new additional scheme only for authentication purpose e.g. "myappauth"
Don't forget to add the scheme to your Info.plist (URL types -> URL Schemes)

Regards,
Vlad

1

Answer 2

JohnEdenred OP

May ’21

We are experiencing the same issue.
Would be grateful to have a feedback from Apple on this issue.

0

Answer 3

njarecha OP

May ’21

The solution in my case was to create a new additional scheme only for authentication purpose e.g. "myappauth"

Yes, that is the solution but in all cases its not possible to re-register scheme as we are accessing lot of customer portals.
Would be grateful if someone from Apple address this.

Regards,
Nimesh

1

Answer 4

apoorvet OP

May ’21

Before adding the uri, try url encoding it :

Code Block callBackURI.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)

This worked for me.

8

Answer 5

n8sters OP

May ’21

The answer above by apoorvet also worked for me. Wooooo!

0

Answer 6

Jeria OP

May ’21

Having the same issue now that I build the app with iOS 14.5.

I will use the work-around mentioned by apoorvet (thanks!), but this is surely a bug right?

0

Answer 7

Systems Engineer OP

Apple

Jun ’21

Recommended

ASWebAuthenticationSession does not require any modification in your Info.plist. This exception happens because the value that was passed to callbackURLScheme contained either a ":" or "/" character. In most cases, this means you passed something like myscheme://, which is not valid.

The correct value to pass in this case is just myscheme (no trailing "://").

6

Answer 8

chaitu.thandu OP

Oct ’21

is this issue fixed by Auth0 in latest SDK? I am also facing the same issue with latest xcode.

0