Unhandled error when using ServerSideNetworkAdaption.BandwidthProbingAndRemoteVideoQualityAdaption on iOS

[JoeGrn]

What happened and what did you expect to happen?

Recently bumped to version 3.18.2 from 3.13.0 to use setServerSideNetworkAdaption.

When setting a VideoPriorityDownlinkPolicy before joining a chime meeting on an iOS device if setServerSideNetworkAdaption is set to ServerSideNetworkAdaption.BandwidthProbingAndRemoteVideoQualityAdaption intermittently an unhandled error is thrown inside a UTF8 decoding method.

Have you reviewed our existing documentation?

• [X] GitHub issues
• [X] FAQs page
• [X] README page
• [X] Feature-specific guides

Reproduction steps

• Use iOS device & Google Chrome
• Follow join meeting flow set devices etc
• Set a VideoPriorityBasedPolicy
• Call videoPriorityDownlinkPolicy.setServerSideNetworkAdaption( ServerSideNetworkAdaption.BandwidthProbingAndRemoteVideoQualityAdaption, );
• Join the chime meeting
• Intermittent error

Amazon Chime SDK for JavaScript version

3.18.2

What browsers are you seeing the problem on?

Chrome

Browser version

119.0.6045.109

Meeting and Attendee ID Information.

No response

Browser console logs

TypeError: null is not an object (evaluating 'np.length')

[JoeGrn]

When on iOS removing policy.chooseRemoteVideoSources(preferences.build()); fixes the issue.

Combination of iOS devices using tile priority preferences when ServerSideNetworkAdaption is set throwing an intermittent error.

[hensmi-amazon]

I am currently unable to reproduce this.

Does this reproduce on non iOS chrome? Does it reproduce in iOS safari or a desktop browser? What is preferences when you see the failure? Do you have any additional logs or a meeting ID?

[JoeGrn]

I've recently left the company using the chime SDK in the manner. We removed a custom video downlink policy to fix this if I remember correctly it was prioritising the screen share stream under poor network conditions.

Sorry getting more information would now be difficult. Happy to close this.

@BenRamsden for visibility at jugo in case you see this issue again.

[hensmi-amazon]

Gotcha, that's fair. It can be reopened if necessary.