Setting the Id or adding any attributes to a AudioMessage results in a duplicate key exception.

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#10 opened on Dec 9, 2024 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 55/100

Issue type: Bug
Clarity: Clearly specified
Activity status: Stale
Tech stack: csharp
Domain: audio-video-rtc

Research direction

Start with AudioHostApplicationClient.GetOrCreateString() and the LibVst implementation of AudioHostAppication.TryCreateMessage(). Trace how the messageId and named attributes are stored, then verify that creating an AudioMessage assigns its id and setting attributes no longer raises the duplicate-key exception.

Written by the indexing model from the issue text.

Description

bug PR welcome

Whenever an AudioMessage is created via AudioHostAppication.TryCreateMessage(), a blank message is returned without an id. The messageId parameter passed to TryCreateMessage appears to be unused in the LibVst implementation of AudioHostAppicationClient. Furthermore, setting the message id manually or setting any named attribute results in an ArgumentException specifying "An item with the same key has already been added." It looks like this is happening because inside AudioHostApplicationClient.GetOrCreateString(), a call is made to CollectionMarshal.GetValueRefOrAddDefault(). Later in the function Add() is being called on the dictionary to set the allocated string pointer, but the value gets added as a default by the CollectionMarshal call.

Dominant language: C#
Stars: 152
Forks: 11
PR merge metrics: No merged PRs in 30d

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