UnityWebRequest crashes app

puddle_mike · December 19, 2023, 10:53pm

After trying to remove a library that we believe was doing the web requests, we’re crashing in this mysterious way:

I’m not sure if this is another issue yet, but will try to make a standalone repro tomorrow

v_vuk · December 20, 2023, 1:06am

Hi all – we’ve tracked down the underlying cause of this. We’re going to try to get a fix in to 2022.3.17f1 (fingers crossed – holidays might interfere just due to releaes timing), but in the meantime, we’re also going to try to create a one-off player build that you can install over top of 16f1. Stay tuned.

joe_nk · December 20, 2023, 1:19am

Thanks! If there’s a fix we can apply in an Obj-C file somewhere that would be handy too!

pknndy · December 20, 2023, 1:26am

+1 to the above, and also a one-off 16f1 build would really help us out. Thank you for keeping us updated!

waldgeist · December 20, 2023, 8:24am

Sounds awesome. Thanks for letting us know. Have a nice holiday season!

v_vuk · December 20, 2023, 10:44pm

If there’s a fix we can apply in an Obj-C file somewhere that would be handy too!

Oh hey, good thought – that’s definitely the fastest way to unblock. Unfortunately, it looks like discussions doesn’t let me add zip/mm files, but the good news is you already have the file you need.

In Unity.app, copy Unity.app/Contents/PlaybackEngines/iOSSupport/Trampoline/Classes/Unity/UnityWebRequest.mm to Classes/Unity/UnityWebRequest.mm in any generated Xcode project. (Note you’re copying from iOSSupport.)

You may also be able to copy that file to Unity.app/Contents/PlaybackEngines/VisionOSPlayer/Trampoline/Classes/Unity/UnityWebRequest.mm and have things “just work” for builds afterwards, but I haven’t checked that; might end up with some Unity.app signature issues.

yezNL · December 21, 2023, 12:51pm

Thanks, the latter solution works for me.

puddle_mike · December 21, 2023, 5:42pm

Thanks the second option worked for me too! FYI - the file you want to copy wasn’t actually in the Unity.app bundle for me, but was in parallel folders:

Thanks again for getting out a workaround so quickly

from2001vr · December 23, 2023, 1:15am

I also confirmed that copying
/Applications/Unity/Hub/Editor/2022.3.15f1/PlaybackEngines/iOSSupport/Trampoline/Classes/Unity/UnityWebRequest.mm
to
/Applications/Unity/Hub/Editor/2022.3.15f1/PlaybackEngines/VisionOSPlayer/Trampoline/Classes/Unity/UnityWebRequest.mm
worked for me with the following environment.

Unity 2022.3.15f1
PolySpatial 0.7.1
Xcode 15.2 beta 1
VisionOS 1.0 beta 7

v_vuk · December 26, 2023, 6:11pm

Thanks for confirming! And yep, I forgot that the Hub downloads the build targets into a parallel folder (to avoid the same signing issues I was talking about, heh!). So that’s the correct location.

diegovis · January 8, 2024, 8:49pm

I’m running into this as well. Did the UnityWebRequest workaround below fix this for you?

diegovis · January 8, 2024, 9:21pm

Just tried the solution above, and it DID fix that strange issue from @puddle_mike’s screenshot. Thanks!

ina · January 9, 2024, 1:46pm

is this fixed yet in .16f1

waldgeist · January 9, 2024, 3:15pm

No, you have to apply it yourself.

joe_nk · January 10, 2024, 11:29pm

The same patch has to be applied on Unity 2022.3.17

mark_unity774 · January 22, 2024, 6:12am

I second that. Total blocker for me on 2022.3.16 with latest 0.7.1 packages.
Caused by a null URL passed in.
Not sure what’s even making the call. It’s not in our project code.

waldgeist · January 22, 2024, 8:58am

At least there’s a workaround. Try using text input fields. That’s much worse.

mark_unity774 · January 23, 2024, 1:50am

Thanks so much. That did the job. (At least the hub version supplied by @puddle_mike .)

joe_nk · January 23, 2024, 2:37am

This is fixed as of Unity 2022.3.18f1

wwwwwwl · February 18, 2024, 2:42pm

I got the bug too.

Unity 2022.3.17f1c1
PolySpatial 1.0.3
Xcode 15.2