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onBufferedAmountChange is not firing #214
Description
Describe the bug
onBufferedAmountChange never fires on macOS; other datachannel events work fine.
To Reproduce
Provided example uses Kotlin:
val nativeChannel: RTCDataChannel = pc.createDataChannel(label, RTCDataChannelInit())
nativeChannel.registerObserver(object : RTCDataChannelObserver {
override fun onBufferedAmountChange(previousAmount: Long) {
println("onBufferedAmountChange: $previousAmount")
}
}
val largeData: ByteBuffer = createBytes(100 * 1024)
dataChannel1.send(RTCDataChannelBuffer(data, true))
// Nothing happens; the time limit is 5 seconds.
Expected behavior
The onBufferedAmountChange event should be fired once.
Desktop:
- OS: macOS
- Version: Sequoia
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devopvoid commentedon Oct 19, 2025
Hi @zibet27, thanks for the report. I have to check this on my mac mini and will report back.
zibet27 commentedon Nov 12, 2025
Hi! @devopvoid, did you have a chance to check the issue?
rnett commentedon Dec 10, 2025
@devopvoid I'm getting blocked by this as well, have you had a chance to look into it?
zibet27 commentedon Dec 19, 2025
@devopvoid The issue is actually already fixed by #206. I thought this commit was already published. I created a local Maven publication of the main branch, and it works as expected.
When do you plan to release the next version?
Sorry for the misunderstanding.
ApoloApps commentedon Jan 14, 2026
@devopvoid we too are blocked. A release would be appreciated!!!! :)
rnett commentedon Feb 19, 2026
@devopvoid gentle bump
devopvoid commentedon Sep 13, 2026
Confirmed fixed by #206 (merged 2025-08-29), which added the missing
OnBufferedAmountChangebridge inRTCDataChannelObserver. As @zibet27 found, that landed after v0.14.0 but the fix has been in every release since v0.15.0 (2026-08-16), and we're now on v0.17.0. Sorry for the long wait on a release — closing this out since it's shipped. If anyone's still seeing it not fire on a current release version, please reopen with your exact version.